M-Audio Delta 44 Manual

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Table of Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

What’s in the Box? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

About the Delta 44 Digital Recording . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Product Features & Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Minimum System Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Break-Out Box Front Panel: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Break-Out Box Back Panel: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

PCI Host Adapter Card: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Quick Guide to Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Hardware Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Delta Driver & Software Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Windows 98 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Windows 95 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Windows NT 4.0 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Windows NT 3.51 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Macintosh Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Verifying Windows Driver Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Verifying Delta Control Panel Software Installation . . . . . . . . . . . . . . . . .10

Delta System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Delta’s Analog Input/Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

The Digital Monitor Mixer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

The Patchbay / Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Using the Delta 44 with your Software Application . . . . . . . . . . . . . . . . . .12

Delta 44 Control Panel Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Monitor Mixer Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Patchbay/Router Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

S/PDIF Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

About Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Save, Delete, Load Buttons; H/W Installed . . . . . . . . . . . . . . . . . . . .22

Delta 44 Recording Tutorials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Typical Setup #1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Typical Setup #2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Troubleshooting Tips for Frequently Asked Questions . . . . . . . . . . . .35

Appendix A - Technical Specs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Appendix B -If You Use An External Mixer... . . . . . . . . . . . . . . . . . . . . . .37

Limited Lifetime Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

Delta 44 Manual

version: D44-110801

Product Features & Specifications

• 4x4 24-bit/96khz full-duplex recording interface.

• PCI host card with external break-out box.

• 4x4 analog I/O accepts balanced or unbalanced connections on 1/4” TRS jacks.

• Analog I/O configurable for +4dBu, Consumer (approximately -4dBV), and

-10dBV signal levels.

• Analog dynamic range exceeding 103dB.

• All data paths support up to 24bit/96kHz performance, no upgrades necessary.

• Comprehensive digital mixing, routing, and monitoring capabilities controlled

by included Delta Control Panel software.

• Windows 95/98 multi-card drivers with ASIO1 and ASIO2 multi-card, GSIF and

EASI drivers included; Windows NT multi-card and Mac OS drivers with ASIO

1&2 also included.

Minimum System Requirements

• Windows 95 or Windows 98.

• Pentium II 266MHz for 96kHz operation. Pentium 200 MMX for 48kHz or less.

• 128 MB of PC100 RAM for 96kHz operation. 64MB SDRAM for 48kHz or less.

• Mac G3 or G3 accelerator with 64 MB of RAM, 128 recommended. Some faster

Power PCs will perform adequately.

• UDMA EIDE or SCSI HDD recommended.

Break-Out Box Front Panel:

1. Analog OUTS 1-4: These jacks output analog audio to a variety of external

sources. Each jack is 1/4” TRS (Tip-Ring-Sleeve) and is compatible with 1/4”

TRS (balanced) or TS (Tip-Sleeve unbalanced) connections.

2. Analog INS 1-4: These jacks input analog audio from a variety of external

sources. Each jack is 1/4” TRS (Tip-Ring-Sleeve) and is compatible with 1/4”

TRS (balanced) or TS (Tip-sleeve unbalanced) connections.

Break-Out Box Back Panel:

3. Host Cable connector: This 15-pin D-sub connector is used to attach the external

break-out box to the PCI host card, using the supplied host cable.

PCI Host Adapter Card:

4. Host Cable connector: This 15-pin D-sub connector attaches to the supplied host

cable to allow communication between the PCI host card and the break-out box.

Quick Guide to Getting Started

Here is a list of the steps required to get your Delta 44 up and running:

1. Physically install the card in your computer and connect it to the Delta 44 break-

out box (see ‘Hardware Installation’).

12 4

5. Windows is now ready to install the driver files from the specified location.

Click ‘Next>’. Windows will start to copy the files and show you a progress

report screen.

6. The Wizard reports that Windows has finished installing the software. Click

‘Finish’. Your Delta 44 is ready for action.

After completion of the driver installation, Windows may require you to restart

Windows. If it does request a restart, remove the Delta disk from the floppy disk

drive and respond by clicking “Yes”. The system will restart and your Delta 44 is

ready for use

Windows 95 Installation

1. After installation of the Delta 44 hardware, boot your system and start Windows.

During the Windows boot procedure, new hardware will be automatically detected.

2. Choose the Install of “driver from disk provided by hardware manufacturer,”

then click OK.

3. An ‘Install From Disk’ dialog will prompt you to copy files from the A:\ drive

Click browse. Insert the Drivers CD into your CD ROM drive. Type in the drive

letter of your CD drive (we will assume here that it is D:\) and the path to the

Delta drivers, which will be D:\DeltaSeries\Delta9X. Click OK.

4. Windows will start to copy files, with a progress indicator on the screen. Once

this process completes itself, your Delta 44 will be ready for action.

After completion of the driver installation, Windows may require you to restart. If it

does request a restart, remove the Delta Disk from the floppy disk drive and respond

by clicking “Yes”. The system will restart and your Delta 44 is ready for use.

Windows NT 4.0 Installation

1. Power up your computer after physically installing the Delta 44 card.

2. Go to Start | Settings | Control Panel and double click on ‘Multimedia.’ Click the

‘Devices’ tab, then click the ‘Add’ button.

3. “Unlisted or Updated Driver” will be highlighted at the top of the list. Click OK.

4.. You will be prompted to insert the driver disk,, with the A: prompt appearing as

the path. Insert the Drivers CD into your CD ROM drive. Type in the drive letter

of your CD drive (we will assume here that it is D:\) and the path to the Delta

drivers, which will be D:\DeltaSeries\Delta_NT. Click OK.

5. The “M Audio Delta Interface Card” driver will appear in the Add Unlisted or

Updated Driver dialog box. Click OK.

Windows NT will require you to restart your computer for the changes to take effect.

Choose “Restart Now.” Upon restart, your Delta 44 will be ready for use.

Windows NT 3.51 Installation

1. Install the hardware in your system, then power up your system & boot

Windows NT Ver 3.51.

2. Click and open the “Main” group.

3. Click and open the “Control Panel.”

4. Click on the “Drivers” icon.

5. Click on the “Add” button.

6. Select the “Unlisted or Updated Driver” entry and push “OK.”

7. You will be prompted to insert the driver disk,, with the A: prompt appearing as

the path. Insert the Drivers CD into your CD ROM drive. Type in the drive letter

of your CD drive (we will assume here that it is D:\) and the path to the Delta

drivers, which will be D:\DeltaSeries\Delta_NT. Click OK.

8. When the “Add Unlisted or Updated Driver” window pops up, select the “M

Audio Delta Interface Card” entry and click “OK”.

9. In order for the driver installation to be completed you will be required to exit

and restart Windows.

Macintosh Installation

1. Open the System folder on your Macintosh hard drive. In the System folder,

locate the Extensions folder.

2. On your Drivers CD disk, open the Delta Products folder, then the Delta 44

folder. Place the extension file "Delta 44 Driver" in your Extensions folder by

clicking on it and dragging it to the Extensions folder.

3. If you are using a music program that uses ASIO drivers, it will also have an

ASIO folder within the application’s folder. In your Mac Delta Drivers folder

you will find three Delta 44 ASIO drivers. For Cubase versions 4.x, use the

"ASIO2 Delta44" driver. For Metro, or earlier versions of Cubase, use the

"ASIO Delta44v3" driver. For any music program that is not ASIO2 capable,

use the “ASIO Delta 44” driver instead (check your program’s documentation).

Place the file "ASIO Delta" in your program's ASIO folder by clicking on it and

dragging it to the ASIO folder.

4. Drag the "DeltaPanel PPC" file onto your Macintosh hard drive. You can run

the Delta Control Panel from any place that's convenient, though music software

applications that use ASIO will allow you to launch the Delta panel from within

the program. If not, we suggest creating a alias to the control panel by

highlighting it and pressing Command (Apple key)+M. Then, drag the alias to

the desktop.

5. With the Delta 44 PCI card installed, restarting the computer will load the Delta

44 extension. You will be able to visually see the Delta extension icon pass by

as your system loads extension.

6. Go to the Apple menu |Control Panel | Sound. You should see the “built-in”

sound icon, plus the Delta icon if your Delta 44 is properly installed. If your

music program does use ASIO, leave the Sound Manager driver set to "built-in"

for both Sound In and Sound Out. If your program does not use ASIO (check

Verifying Delta Control Panel Software

Installation

In Windows, open the Windows Control Panel (do so via Start | Settings | Control

Panel ). If your Delta 44 hardware and Delta Control Panel software are properly

installed, the Windows Control Panel should display an “M Audio Delta H/W” icon.

By double-clicking on that icon, you may launch the Delta Control Panel software.

Also for convenience, you may create a shortcut on your desktop by dragging a copy

of the “M Audio Delta H/W” icon from the Control Panel to your Windows desktop

using your mouse or trackball. After completing the drag operation, a dialog box

will ask you if you wish to create a shortcut — click on ‘Yes’. Once the shortcut is

installed, all you have to do is double-click on the shortcut icon on your desktop to

launch the Delta Control Panel software.

On the Macintosh, the Delta Control Panel may be placed anywhere on your hard

drive, or any partition of your hard drive that you find convenient. Once the control

panel file has been dragged from the CD onto your hard drive, you may double click

it to launch the Delta Control Panel software. You may create a alias to the control

panel by highlighting it, then holding Apple key+M. This alias can then be placed

on your desktop.

NOTE: When using a music software program that is ASIO

capable, launch the Delta Control Panel software from within that

program. Some of the control panel functions will be controlled

from within that program, such as master clock setting and

sample rate, so it is desireable to launch the music program first,

and then the Delta Control Panel from the the program’s “launch”

or “control panel” button. Without the music program open

however, it is okay to open the Delta panelfrom your desktop or

otherlocation.

Delta System Overview

Delta’s Analog Input/Outputs

The Delta 44 Digital Recording Interface’s analog inputs and outputs are

compatible with a wide variety of audio products. The Delta Control Panel

software allows you to configure the signal levels of each input individually,

and all outputs as a group. Signal level settings of +4/Consumer/-10 are

available. Selecting the ‘+4’ radio button configures the channel(s) for use with

+4dBu signal levels, compatible with most musical instruments and

professional mixers. Selecting the ‘-10’ setting sets up the channel(s) for -

10dBV nominal signal levels, commonly used with consumer equipment such

as CD, MiniDisc, cassette tape and DAT players. The ‘Consumer’ setting is

Synchronization

For proper operation, the entire Delta 44 system is always synchronized to a single

master clock. This master clock is derived from the internal crystal oscillators.

When a WAV file is played through the Delta drivers, the software application

playing the WAV file is responsible for setting the sample rate in the sound card

hardware. The Delta 44 supports these sample rates by using either of its internal

crystal oscillators and dividing the rate of that oscillator by some value to derive the

proper sample rate.

Using the Delta 44 with your Software Application

Once the Delta 44’s hardware and driver software are properly installed, it is ready

for use with your music application software. Some of these applications may

require you to highlight or enable the Delta 44 drivers within the program, and others

may have a utility that analyzes or profiles the audio cards in your system and

enables the drivers. Your software should have an audio device driver setup page.

WINDOWS MME AUDIO INPUT DEVICES: The Delta 44 analog inputs may be

used simultaneously for a total of 4 input channels. Within your software

application(s), the names of the Delta 44 audio input devices are:

PCM In 1/2 Delta-44

PCM In 3/4 Delta-44

Mon.Mixer Delta-44

The PCM In devices allow recording a stereo stream directly from the specified

analog input pairs. The Mon.Mixer device allows stereo recording from the digital

“monitor” mixer built-into the Delta 44. The audio data recorded from this device

is the mix of input and output streams set up in the Delta Control Panel software (see

“Delta 44 Control Panel Software” section).

Note that the input devices are stereo. Your application software

may break these down further to “left” and “right” mono devices.

Therefore you may see them as “Left PCM In 1/2 Delta-44, Right

PCM In 1/2 Delta-44”, “Left PCM In 3/4Delta-44, Right PCM In 3/4

Delta-44”, or “Left Mon.Mixer Delta-44, Right Mon.Mixer Delta-44,”

from within your recording software.

WINDOWS MME AUDIO OUTPUT DEVICES: The Delta 44 analog outputs may

all be used simultaneously for a total of 4 output channels. Within your software

application(s), the names of the Delta 44 audio output devices are:

WavOut 1/2 Delta-44

WavOut 3/4 Delta-44

Each WavOut device allows playing a stereo audio stream to the analog hardware

outputs, and into the hardware router or mixer. Your application software may break

each of these stereo devices down further to “left” and “right” mono devices. Most

software will handle the outputs as stereo pairs but allow you to pan audio left or

right within the pair. Therefore to send a mono output to OUT1 (for example),

choose WavOut 1/2, then pan that track hard left.

Note that each device name begins with “WavOut.” This is to

remind you that these are software devices, and not always

connected directly to the Delta 44’s output jacks. Instead they are

connected to the Delta 44’s internal patchbay/router and hardware

mixer, and may be sent to one of several destinations. For more

on the patchbay/router, see the Patchbay/Router section of the

Delta Control Panel software discussion.

MACINTOSH SOUND MANAGER INPUTS AND OUTPUTS: The Apple Sound

Manager limits the user to one stereo pair for input and one stereo pair for output.

Within your music software, the device selection when using the Sound Manager

drivers for input and output will be “Sound Manager” both for input source and for

output port.

To select the Sound Manager driver, open the Apple Menu and go to Control Panel

| Sounds. For both “Sound In”and “Sound Out,” click and highlight the Delta icon,

then exit. You may select which Delta hardware stereo input pair and stereo output

pair will be used for the Sound Manager’s Sound In and Sound Out in the Delta

Control Panel “Hardware Settings Page” (see section, “Hardware Settings

Page”under “Delta Control Panel”). Whichever stereo pair you select, the software

input and output device selection within your music program will remain the same.

ASIO DRIVER INPUT DEVICES: When using the ASIO audio drivers with programs

that support ASIO-style audio, the input devices are displayed as mono devices.

Within ASIO software applications, the names of the Delta 44 audio input devices are:

Analog In1 Delta-44

Analog In2 Delta-44

Analog In3 Delta-44

Analog In4 Delta-44

Mon.Mixer L Delta-44

Mon.Mixer R Delta-44

Notice the Monitor Mixer input names include “L” and “R” characters. “L”

indicates the left channel of the stereo stream, while “R” indicates right channel.

ASIO DRIVER OUTPUT DEVICES: The Delta 44’s ASIO output devices appear in

stereo pairs. Because each device is stereo, you may see “left” and “right”

references within your software application. This allows the application to pan

audio left and right under software control. To send a signal to a Delta ASIO output

1 (for example) as a mono output send, one would choose “Analog 1/2 Delta-44” for

that track’s output port, and then pan that output hard left. The ASIO outputs are

named as follows:

Monitor Mixer Page

The Monitor Mixer is the first page that appears when the Delta Control Panel is

opened, and controls the digital mixer built into the Delta 44’s PCI controller chip.

As described in previous sections, the output of this mixer may be assigned to the

OUT1/OUT2 analog outputs. At the same time, the mixer outputs may be recorded

in stereo by software.

The Monitor Mixer Page is essentially a collection of volume level faders, audio level (or

‘peak’) meters, and solo/mute controls. For each mixer output and input channel there is

one of each: a volume fader, a peak meter, a solo control, and a mute control.

LEVEL FADERS: Each volume fader may be controlled by dragging its fader

‘handle’ vertically with the mouse, or by clicking on the ‘handle’ to make it active

and then adjusting it with the up/down cursor keys of your computer keyboard.

Because the mixer has no gain, these faders only attenuate (reduce) the signal levels.

The highest setting is 0dB, or ‘Unity Gain.’ The default fader setting is the quietest

setting, -144dB, which essentially mutes the audio. A pair of level faders may be

“ganged” so that both channels may be adjusted together as a stereo pair.

Also, at the top of each fader and meter is a fader level “fine adjustment” control.

Clicking on the small “up” and “down” arrows will adjust the corresponding fader

setting in 0.5dB increments. Next to each fine adjustment control is a numerical

fader readout that is always current and active.

PEAK METERS: Each peak meter indicates an audio signal level in “dB relative to

full-scale.” This means that a full-scale signal is referred to as “0 dB” and a signal

that is 12dB ‘quieter’ than full-scale is referred to as “-12dB.” The meters are

vertically color-coded into three sections: green, yellow and red. The green section

represents a safe zone, ranging from approximately -48dB to -12dB. Most audio

signals should appropriately fill this section of the meter. The yellow section ranges

from -12dB to -3dB as the signal approaches a ‘hotter’ level. For best capture

resolution, recording in this area is both safe and advised. The red section of the

meter ranges from -3dB to 0dB. On the input level meters, a 0dB condition indicates

overload and audio clipping may occur. Therefore be careful to adjust the incoming

audio levels so that they do not peak in the red section too long (you might use the

monitoring capability of the Delta 44 to let your ears be the judge). On all output

level meters, 0dB indicates full-scale output. Unlike the inputs, hardware clipping

is impossible on the outputs because of the 36-bit resolution built into the mixer

hardware. However, please note that it is possible to mix multiple tracks within your

software application and cause clipping to occur in the output stream before it

reaches the Delta output hardware or monitor mixer.

MASTER VOLUME: At the left side of the Monitor Mixer page, you will see the

‘Master Volume’ faders and peak meters. These faders have the longest ‘throw’ and

highest meter resolution of any level controls in the mixer page. They control the

overall stereo level of the mixer output. The peak meters indicate the output signal

levels with respect to full-scale and are directly affected by the settings of the master

volume faders.

MIXER INPUTS: The ‘Mixer Inputs’ are inputs to the monitor mixer. These inputs

accept hardware audio streams (directly from the Delta’s analog input ports) and

software audio streams (digital audio generated in software to be output). This

combination of streams makes the monitor mixer extremely flexible. Each mixer

input channel has its own level fader and may be panned anywhere in the left/right

stereo field. Also, each input has its own peak meter. The peak meters indicate the

incoming “pre-fader” levels of the incoming audio and are therefore not affected by

the fader settings. However, the input faders do affect the levels of the signals

exiting the mixer and you will see the effect of the input faders on the output “Master

Volume” peak meters.

The two leftmost peak meters are labeled “WavOut 1/2,” “WavOut 3/4.” These

mixer inputs accept the digital audio streams being sent from your software

application (or Windows) to the driver devices with those same names. Each name

begins with “WavOut” to remind you that these are software streams and may not

necessarily be routed to any physical outputs (see Patchbay/Router Page). To the

right are more channels, labeled “H/W In 1/2,” and “H/W In 3/4.” These mixer

inputs are audio streams from the physical Delta 44 hardware inputs, hence the

“H/W” at the front of each label. On the Mac, these inputs are labeled “SM/ASIO,”

as these software streams will be receiving their digital audio either from the Sound

Manager or the ASIO driver, depending on your selection.

Delta 44 board. To display this page, click the “Patchbay/Router” tab of the Delta

Control Panel.

ON THE MAC: Please substitute the name “SM/ASIO” where referrences are made

to “WavOut.” SM/ASIO are the software outputs on the Mac, while WavOut are the

software outputs on the PC. Substitute “Windows multimedia applet” with “Sound

Manager Applet.”

The leftmost vertical column of Patchbay/Router page, “H/W Out 1/2,” connects this

hardware analog stereo pair to one of four stereo sources:

1. The default setting, “WavOut 1/2”, connects ports OUT1 and OUT2 to your

music software or Windows multimedia applet. In other words, when music

software plays audio to the device named “WavOut 1/2 Delta-44” it will be

routed directly to the “hardware” outputs 1 & 2 of your Delta 44’s break-out box.

2. The second option, “Monitor Mixer,” connects ports OUT1 and OUT2 to the

outputs of the Delta 44 monitor mixer. For more information of the capabilities

of the monitor mixer, please see the section “Monitor Mixer Page.”

3. Selections three and four connect the hardware analog inputs 1&2 or 3&4

(respectively) directly to the Delta 44’s hardware analog outputs 1&2. For

example, if “H/W In 1/2” were selected, any signal present at the IN1 port will

be copied to OUT1, and any signal present at the IN2 port will be copied to

OUT2. When “H/W In 3/4” is selected, the routing behaves similarly.

The next vertical column of the Patchbay/Router page “H/W Out 3/4,” connect this

hardware analog stereo pair to one of three stereo sources.

1. The default setting, “WavOut 3/4”, connects ports OUT3 and OUT4 to your

music software or Windows multimedia applet. In other words, when music

software plays audio to the device named “WavOut 3/4 Delta-44” it will be

routed directly to the “hardware” outputs 3 & 4 of your Delta 44’s break-out box.

2. Options two and three connect the hardware analog inputs 1&2 or 3&4

(respectively) directly to the Delta 44’s hardware analog outputs 3&4. For

example, if “H/W In 1/2” were selected, any signal present at the IN1 port will

be copied to OUT3, and any signal present at the IN2 port will be copied to

OUT4. When “H/W In 3/4” is selected, the routing behaves similarly.

At this point, you may begin to realize the versatility of the Monitor Mixer and the

Patchbay/Router, and the relationship between the two. You may want to re-read this

section and make some practice adjustments within the Delta Control Panel software

to become proficient in routing and mixing. If somewhere in the process you

become confused, you may always restore the default settings to use the card as a

straight 4-in 4-out device — just choose the topmost option in each of the

Patchbay/Router columns.

Hardware Settings Page

The Hardware Settings page of the Delta Control Panel gives you control over

miscellaneous features of the Delta 44. To display this page, click the “Hardware

Settings” tab of the Delta Control Panel.

MASTER CLOCK: This section displays the source of the board’s master clock:

Internal Xtal (crystal). Master clock operation is outlined in the Synchronization

section of this manual. Internal Xtal is the default (and only) setting. The status

display will always say “Locked” as the Delta will always be synchronized to its

own internal clock.

CODEC SAMPLE RATE: This section indicates the present board sample rate, as

set by application software. The sample rate displayed here is used to drive the

digital mixer and all converters. The “Rate Locked” checkbox is used to force a

sample rate upon the system. It is disabled by default to allow software access to all

supported sample rates. When checked, it causes the driver to only operate at the

selected sample rate. This means that any application that attempts to open the

Delta 44 driver at a sample rate other than the one selected here will fail to do so and

will post an error message. “Reset Rate When Idle” is selected when you want the

sample rate to return to a particular setting when a software application is not

actively using the board. This is particularly handy for keeping the digital mixer

running at a specific sample rate.

NOTE: Because the digital monitor mixer runs at the sample rate

of the rest of the board, and because sample rate directly affects

frequency response, it may sometimes be desirable to keep the

sample rate at or above 44.1 kHz while using the monitor mixer.

This is accomplished by enabling “Reset Rate When Idle” and

selecting a sample rate of 44.1 kHz or greater.

version. If you have Internet browsing capabilities and are currently connected to

the Internet, clicking on the Midiman copyright will link you to the M Audio /

Midiman web site (PC only).

Save, Delete, Load Buttons; H/W Installed

On the PC, at the rightmost side of the Delta Control Panel are the Save, Load and

Delete buttons as well as an “installed hardware” set of radio buttons. These controls

appear regardless of what Delta Control Panel page is being displayed.

SAVE, DELETE, LOAD: The Delta Control Panel always retains the last settings

entered. However the Save, Delete, and Load functions expand this capability to

store different sets of control panel settings using different configuration file names.

These configurations are then available for recall at a later date and time.

Clicking the ‘Save’ button brings up a dialog box prompting you to name the current

configuration. Once you have done this, click ‘OK’, and your current configuration

has been saved to disk. If you decide that you no longer need a particular

configuration, click the ‘Delete’ button. Highlight the name of the configuration file

that you wish to delete, and click the ‘OK’ button. To recall or reload a saved

configuration, click the ‘Load’ button. Highlight the name of the configuration file

that you wish to recall, and click ‘OK’. Those settings will now appear in the Delta

Control Panel and the driver will automatically update the hardware.

H/W INSTALLED: Up to four Delta cards may be installed in a system at one time

(Note: On the Drivers CD, see the “Multi-card Installation” readme file). This

section displays all installed Delta cards, and allows you to select which particular

card is under the control of the control panel software. To select a card for

configuration, click the radio button to the left of that particular card in the “H/W

Installed” list.

ON THE MAC: To save your Delta control Panel settings, go to the File menu and

select “Save,”or “Save as.” A dialog box will appear, promting you to name the

current configuration. Once you have done so, click the Save button. To save the

current settings as your default, go to the File menu and choose “Save as

Preferences.”

In the upper righthand corner of the control panel is a “H/W Installed” drop-down

list. At the time of this writing, the Delta Mac ASIO drivers will support only a single

Delta device, and of course the Sound Manager will support only one stereo pair

regardless of how many audio cards are installed in your system. The H/W Installed

list will display “Delta 44 as the active device in the control panel.”

Delta 44 Recording Tutorials

In this section we will explore two sample setups for recording and playback using

the Delta 44 Digital Recording Interface. This is by no means an exhaustive tutorial

but its intent is to help you understand most of the Delta 44’s feature set. Before

beginning, you should open your music software and profile the Delta 44, enable its

drivers, or otherwise setup the software for operation with the Delta 44.

NOTE: All of these examples refer to the Windows MME driver

names. If you’re using ASIO or Apple Sound Manager drivers,

you’ll need to substitute the appropriate driver names when

referring to software inputs or outputs. On the Macintosh,

substitute “SM/ASIO” for Delta Control Panel references to

“WavOut.”

Typical Setup #1

Let’s assume for this setup that we’re recording a single guitar and vocal, then

overdubbing another guitar and vocal track while listening to the first tracks. The

following diagram shows a microphone pre-amp and direct box being used (in this

case, the Audio Buddy™ by Midiman), and a stereo sound system. The pre-amp

and direct box are required for the mic and guitar. Many instruments, such as

MIDI modules or keyboards, may be connected directly to the Delta 44’s inputs.

Mic

Guitar

MIDIMAN

Audio Buddy

Delta 44

Sound System

Computer

typical set up #1

NOTE: Because improper connections may potentially make very

loud noises, it’s a good idea to have all monitor levels set low or

muted while hooking up audio equipment — you may even

choose to turn your computer off before making the connections.

1. Plug the guitar into the channel-1 Line input of the pre-amp. Plug the

microphone into the channel-2 Mic input.

2. Plug the outputs 1 & 2 of the pre-amp into the Delta 44’s analog inputs 1 & 2. Both

are balanced outputs and inputs (respectively), so use a high quality TRS cable. Most

balanced lines run at +4dB line level, so let’s set our +4/Consumer/-10 switches to

+4dB on inputs 1 & 2. Open the Delta Control Panel by double clicking the icon in

your Windows Control Panel, and then click on the ‘Hardware Settings’ tab. Locate

the ‘Variable Signal Levels’ section. The +4 setting requires that the +4 radio button

be selected.

3. Plug the hardware outputs 1 & 2 of the Delta 44 to a sound system or

power amp with speakers. If your sound system is a consumer type, set

the +4/Consumer/-10 switch in the Hardware Settings page to the –10

setting. The –10 setting requires that the -10 radio button be selected,

setting all of the outputs to the –10dBV setting. Now minimize the

Delta Control Panel.

4. Turn on your equipment in this suggested order: pre-amp, computer, then sound system.

We’re now physically set up to monitor, record, and play back audio. The next steps

involve further configuring the Delta Control Panel software and also the music

software into which you will be recording. We’ll start with the Delta Control Panel’s

“Hardware Settings” page, then the “Patchbay/Router” page, and finally the

“Monitor Mixer” page. Since the S/PDIF page does not apply to the Delta 44, we’ll

ignore it in this example.

5. Click on the Delta Control Panel on your Windows taskbar to maximize it. Click

on the ‘Hardware Settings’ tab.

6. Under “CODEC Sample Rate,” verify that the “Rate Locked” checkbox is not

activated. This will allow your application software to set the Delta 44 sample

rate as it pleases.

7. Since this example will include the use of the monitor mixer, we will activate the

“Reset Rate When Idle” feature. This will make sure the monitor mixer is

running at a decent sample rate while the system is idle — this prevents the mixer

sample rate from being set too low and therefore lowering its frequency

response. Select a sample rate in the “CODEC Sample Rate” group to use as this

idle sample rate. Choose a 44,100 Hz or higher setting for best results, and select

the same sample rate you will be using in your application if possible. We’ve

chosen 48,000 Hz for this example.

Now click on the Delta Control Panel’s “Patchbay/Router” tab. In the first column

of the Patchbay/Router page, click the radio button “Monitor Mixer” to connect the

monitor mixer’s stereo output directly to Delta analog outputs OUT1 and OUT2.

Now, everything that we hear at outputs 1 & 2 will reflect our settings in the Monitor

Mixer page.

Select the “Monitor Mixer” tab of the Delta Control Panel. The default Master

Volume fader settings are 0dB and un-muted, and all other faders are set to full

attenuation (-144dB) and muted. We will need to adjust these to our preference. The

screen capture below shows the settings that we wish to achieve.

8. In the Mixer Input column labeled “WavOut 1/2,” click on each fader handle and

drag it up to the 0dB setting. Also, deactivate (uncheck) each WavOut 1/2 mute

box to unmute the channels. This will allow us, once we’ve recorded into a

music software program, to hear those software outputs upon playback.

9. Locate the pair of meters labeled “H/W In 1/2.” Strum the guitar, and you should

see an indication in the left meter of the pair, which represents signal levels from

the Delta analog input 1. Test the mic, and you should see an indication in the

right meter, which represents signal levels from Delta hardware input 2.

10. Adjust the gain on the pre-amp so that you’re seeing a good level on the input

meters, about –6dB to –3dB in the loudest parts (this is playing it a safe because

you don’t want to hit 0dB and clip). Make similar adjustments for the microphone,

using the right fader. These are the levels at which the signals will be recorded.

11. Now let’s set the levels at which you will monitor the mic and guitar while

recording. These are not to be confused with the levels that are recorded by the

software — these levels are merely monitor levels that appear in the mixer

outputs (in this case at Delta 44 analog outs 1 & 2). Click on the left fader handle

of H/W In 1/2, and drag it about halfway up. Strum the guitar. If it’s not loud

enough, bring it up all of the way. If it is still not loud enough, you will have to

raise the listening level of your sound system. Make similar adjustments for the

microphone, using the right fader.

12. Now fine-tune your monitor levels. Sing and play guitar, adjusting your listening

levels using the H/W In 1/2 faders so that you have a comfortable blend of guitar

and mic levels.

Now is the time to launch your music software and set it up to record and playback

audio tracks. We’re going to speak in general terms here, since setup within software

programs will vary somewhat. Minimize your Delta Control Panel so that you can

easily access it from your Windows taskbar. Then open your music software

program.

13. First set up the sample rate in the software application. This operation will

depend on the software. Choose a sample rate that is high enough to capture the

frequency response of the guitar and vocals. A general rule of thumb is to

multiply the highest frequency you would like to capture by two and add maybe

a little on top of that — that gives you a suitable sample rate. Also keep in mind

that if the final results of your work will end up on a CD-ROM burned from your

WAV file, you probably want to use 44.1kHz, the native sample rate of

“redbook” CD audio.

14. In your software application, set the ‘source’ or ‘input port’ to “Left PCM In 1/2

Delta-44” on track one, and “Right PCM In 1/2 Delta-44” on track two. Arm the

tracks for recording. Track one is now set up to record the guitar, and track two

the microphone. If your software requires this, set the software’s clock source to

‘Audio.’

15. Press record on your software’s transport bar. Record a take of your guitar and

vocals. Understand that while recording, you are monitoring the Delta inputs by

way of the Monitor Mixer settings for H/W In 1/2, and according to the selection

of ‘Monitor Mixer’ within the Patchbay/Router page. At the same time, your

software is recording from H/W In 1/2 but at the levels that were set up with the

pre-amp.

16. When you are done playing, stop the recording software and rewind the take.

Before playing back what you’ve recorded, you will need to assign the recorded

tracks to output devices on the Delta 44.

Note: For efficiency’s sake, this step could have taken place

while you were setting up the recording track assignments.

However, since this step only affects playback and does not affect

the recording setup in any way, we’ve placed it here to lessen

confusion.

Assign software track one to output device “WavOut 1/2 Delta-44” and pan the track

(within your software) all the way to the left (hard left). Then assign track two to output

device “WavOut 1/2 Delta-44” and pan the track all the way to the right (hard right).

Now, when you start playback, track one (guitar) will be sent to the Delta software

(WavOut) output 1, and track two (mic) to the Delta software (WavOut) output 2.

These two software outputs are inputs to the monitor mixer, therefore the recorded

guitar and mic channels will be sent to the monitor mixer, levels will be modified by

the mixer and the output of the mixer will be heard at analog outputs 1 & 2.

17. Start playback from your software’s transport bar. Open the Delta Control Panel and

go to the Monitor Mixer page. Observe the meters at “WavOut 1/2” – these are the

playback levels of your guitar and mic. Adjust the faders and mute controls so that

you may hear the guitar and mic at the appropriate levels and mix. These are the levels

at which you may monitor the pre-recorded tracks while you overdub (record other

tracks while listening to the first) additional parts.

Let’s assume that you like this take, and wish to overdub an additional guitar and a

harmony vocal. We can still use hardware inputs 1 & 2 of the Delta. We’re set up

to do so and there’s no reason to change these inputs. Let’s set ourselves up to

overdub these next two tracks. We will record the next two tracks of material to

tracks 3 & 4 of the software:

18. Back in your music program, set the ‘source’ or ‘input port’ to “Left PCM In 1/2

Delta-44” on track three, and “Right PCM In 1/2 Delta-44” on track four. Arm

the tracks for recording. Track three is now set up to record the guitar, and track

four the microphone. Usually at this point you would want to return to the Delta

Control Panel monitor mixer to set up levels. However, because you will be

recording the same instruments that you did on the first two tracks, you probably

won’t need to adjust input or monitoring levels.

19. Press record on your software’s transport bar. Record a take of your new guitar

and vocal tracks. Because you have set up the first two tracks to play back

through the monitor mixer, you should hear those original tracks along with the

ones that you are now recording.

20. When you are done playing, stop the recording software and rewind the take.

Before playing back what you’ve recorded, you will need to assign the newly

recorded tracks to output devices on the Delta 44. In your software, set the

output ports of tracks three and four to “WavOut 3/4 Delta-44.” Pan track three

all of the way to the left (hard left), and pan track four all of the way to the right

(hard right). Now track three (guitar) will be sent to the Delta software output 3,

and track four (mic) to Delta software output 4.

21. Press play on your software’s transport bar. Understand now that the four

recorded tracks from the software are being sent to WavOut 1, WavOut 2,

WavOut 3, and WavOut 4 simultaneously. Therefore they are all being input to

the monitor mixer and their playback levels can be controlled at the

corresponding channels of the monitor mixer. Open the Monitor Mixer page of

the Delta Control Panel and adjust the levels of the four channels according to

your taste. You may also experiment with the Mute and Solo controls while

listening to the playback. Note also that the mixer continues to monitor the

guitar and mic at analog inputs 1 & 2!

At this point, you should be able to see how this multi-tracking session is

developing. As we add more tracks within our music software, we set them to the

next pair of Delta software outputs, and bring up the faders of those software inputs

in the monitor mixer. We continually monitor from the Delta hardware outs 1 & 2,

via the ‘Mon.Mixer’ setting as the monitor ‘source’ in the Patchbay/Router page, and

adjusting our mix of the software outputs (and the way we monitor our guitar and

vocal at the inputs) via the Monitor Mixer settings.

1. Plug the microphones into the mic inputs 1 & 2 of the pre-amps. Plug the guitars

into the high impedance inputs 3 & 4 of the pre-amps.

2. Plug the outputs of the pre-amps 1-4 into the hardware inputs 1-4 of the Delta 44.

Usually pre-amp outputs are balanced, so if they are, use TRS cables and set the

Delta +4/Consumer/-10 input switches to the +4dB setting in the Hardware

Settings page of the Delta Control Panel.

3. Plug the hardware outputs 1-4 of the Delta 44 into your mixer’s inputs 1-4 (using

1-4 is recommended for convenience, but not necessary). Some mixers run at

-10 line level, and some at +4. Many mixers may be set either way and actually

have their own +4/-10 switch(es). Let’s assume that our mixer runs at +4, so set

the Delta +4/Consumer/-10 output switch to +4 in the control panel. At this point

we’ll assume that all mixer faders are down.

We’re now physically set up to monitor, record, and playback audio with the

Delta 44 and related components. The next steps involve the settings in the Delta

Control Panel. We’ll use the same settings as Typical Setup #1 for the Delta Control

Panel’s ‘Hardware Settings’ page, i.e. “Reset Rate When Idle” and 48kHz idle

sampling rate. The settings that we’ll focus on will involve the ‘Patchbay/Router’

page. We won’t be using the Delta 44’s Monitor Mixer, so we’ll ignore the ‘Monitor

Mixer’ page.

4. Open the Delta Control Panel software and click on the Patchbay/Router tab.

5. For the first stereo pair, H/W Out 1/2, click the radio button in that column for

“H/W In 1/2.” For the second stereo pair, H/W Out 3/4, click the radio button

in that column to “H/W In 3/4.” Using these settings for the Patchbay/Router

page connects each hardware input directly to a hardware output. These

settings will allow us to monitor the inputs to the Delta 44 (vocals and guitar)

while we are recording.

another available PCI slot, and turn your computer back on. More often than

not, this will change the IRQ assignment of the Delta 44 when you re-enter

Windows. After returning to Windows, follow the steps outlined in the

“Verifying Windows Driver Installation” section of this manual. It might take

more than one PCI slot relocation to find an open IRQ.

If relocating your card to another PCI slot does not cure the Delta 44’s conflict(s),

then you must do some further investigation to determine the exact nature of the

conflict(s). Again, go to the Windows Device Manager, highlight the Delta 44 or

other devices with conflicts and click the “Properties” button at the bottom of the

Device Manager window. This will open the properties page for that device. Select

the “Resources tab” in order to view the resource assignments, plus possible

conflicts. You may learn more about a conflict by highlighting each item one-by-

one (done by clicking on them, or scrolling through the list using your keyboard

cursor keys) and examining the “Conflicting resource list:” at the bottom of the box.

Sometimes it is possible that a resource problem is not showing up in the conflicting

resource list or as a yellow exclamation point in the Device Manager. If you have

any doubt about the configuration of your device (or just want to double-check), you

can view all of the devices and their assigned resources by highlighting “Computer”

at the top of the Device Manager list and clicking the Properties button. This will

allow you to view a list of assigned IRQ numbers on the left, and the associated

devices on the right. If a number does not show up in this list, it means that it is

available for use. Look also for IRQs that are shared by more than one device.

While the Delta 44 may share an IRQ with some devices, not all devices are capable

of sharing IRQs. An entry that reads “IRQ Holder for PCI Steering” along with an

installed PCI device (such as the Delta 44) is normal. If you see another device

showing up on the same IRQ as the Delta 44 (such as a video card, SCSI adapter, or

USB Host Controller), then it is possible that this is the source of the conflict.

Typically, if you move one of the conflicting cards to another PCI slot, an IRQ

conflict will disappear.

Address conflicts are rare amongst PCI devices, but if there is no obvious IRQ

conflict, why not check for I/O Address conflicts while in the Device Manager? You

may view the list of assigned I/O addresses by selecting the “Input/output (I/O)”

radio button below the “Interrupt Request (IRQ)” radio button at the top of the

Device Manager page. I/O addresses are displayed as 16-bit hexadecimal numbers,

therefore one might note that an address of 300h (the default address of the Winman

4X4/s, for instance), will read “0300” in this list.

If scanning all the resource lists in the Device Manager does not provide an answer

or clue to the resource conflict, you might want to exit Windows and do a final

inspection of your computer’s BIOS setup. Some newer BIOS’s (see your computer

manual) allow the reservation of an IRQ for each PCI slot on the motherboard. This

may be very handy in resolving IRQ assignments for PCI devices.

Also, sometimes a BIOS is configured to direct a particular IRQ to an ISA legacy

device (non-PnP ISA card), and needs to be told to look for a PCI/ISA PnP device

(some systems default to this, especially with IRQs 3 and 4). Consult your computer

or motherboard manual for advice on how to do this.

Finally, with some systems you will reach the dead-end realization that you have no

available IRQ’s — every one of them is assigned to some device in the system. This

most typically occurs with pre-packaged computers made by the big-name O.E.M.

computer companies. These computers have so many features packed into them that

every IRQ is consumed. In this type of situation, some kind of reconfiguring or

reprioritizing your system is in order. Optionally, Windows may allow you to create

a second “hardware configuration” which disables some of the installed devices and

makes their resources available for general use. See your Windows documentation

for information on this subject.

Troubleshooting Tips for Frequently Asked

Questions

Problem: No Sound.

Possible Cause 1: The Delta 44 hardware or software device drivers are not

properly installed. See the installation sections of this manual for further information.

Possible Cause 2: There is a resource conflict between the Delta 44 and

another device in your computer. Check the Delta 44 configuration (Address, IRQ)

against those of the other installed devices. If necessary, change the settings for the

one or more of the devices.

Possible Cause 3: Your application software has not been properly

configured to use the Delta 44 as its audio output device.

Possible Cause 4: Misrouted outputs in the Delta Control Panel. Check the Delta

Control Panel’s Patchbay/Router page to verify output routing assignments. Also, make sure

that if the output is routed from the digital mixer, that the mixer’s faders, solo and mute controls

are set up properly.

Possible Cause 5: Improper connections of the audio accessories. Verify that the

Delta 44 analog audio outputs are properly connected to a mix deck or external mixer/amplifier.

Problem: No visual activity on Audio Input volume (VU) meters of user software.

Possible Cause 1: The Delta 44 input devices are not properly selected in

the user’s application software.

Possible Cause 2: If the software is recording from the Delta 44’s

monitor mixer device, be sure that the mixer’s faders, solo and mute

controls are set up properly.

Possible Cause 3: Improper connections to audio accessories.

Problem: Repetitious Sound.

Possible Cause: An IRQ resource conflict. Often this will result in a

small segment of sound (0.5 to 1 second) repeating itself over and over,

sometimes completely locking up the computer. See the general

troubleshooting suggestions at the beginning of this section.

Problem: I’m getting some pops and clicks in my audio recording.

Possible Cause 1: Input levels are too “hot,” causing clipping or input

distortion. Make sure you have the proper signal levels set in the Delta

Control Panel software. “+4” can handle much hotter signals than

“Consumer” or “-10.” If you find that you are still clipping at the +4

setting, you will need to turn down the audio at the source.

Possible Cause 2: Your application software may not have the proper

audio buffer sizes set. Each software application handles this differently,

but typically there is somewhere in the software’s setup to set the size of

the playback and recording buffers used by the application. Some

applications also require you to run a card calibration (sometimes called

“profiling”) the first time you use the software with a new audio card.

Produkt Specifikationer

Mærke:	M-Audio
Kategori:	Ikke kategoriseret
Model:	Delta 44

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