M-Audio DELTA 44 [12/39] Using the delta 44 with your software application

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