M-AUDIO 1010LT - Manual (Page 35)

MULTITRACK DRIVER DEVICES: The Delta 1010LT drivers intelligently synchronize
the beginning of recording and playback across all audio devices on the board. When using
application software that is capable of using multiple channels simultaneously, select "Single
and In-Sync" to ensure that all audio channels will begin playback and/or recording at the
same time. Otherwise select "Independent" to allow the audio channels to play independently
– this setting may be desirable if more than one application needs to access the Delta 1010LT
simultaneously.
DMA BUFFER SIZES: This section specifies the amount of system memory dedicated to
digital audio buffering. Setting a buffer size that is too small may result in clicks or pops
in the audio stream as some data may be lost. Larger buffers cause slightly more latency
but prevent the pops and clicks that might occur with smaller buffer sizes – the default
settings are recommended but you may desire to tweak these default settings to suit your
tastes. This buffer size must be set in the Delta Control Panel before you launch your
music software. When using ASIO with the Delta 1010LT, set the buffer size in the control
panel, then exit the control panel. After doing so, launch your music software.
SOUND MANAGER: The Hardware Settings Page in the Delta Control Panel also contains
software switches that allow you to select which Delta input and output stereo pair will be
used by the Sound Manager, if and when you choose the Delta as the Sound Manager input
and output device. If you go to the Apple menu | Control Panel |Sounds and highlight the
Delta icon for Sound In and Sound Out, then your Apple system sounds will be routed to the
Delta hardware output that you have selected here, and Alert Sounds, if you choose to
record, will receive their input from the Delta hardware input that you select here.
You will want to choose the Delta for input and output in the Sounds control panel if your
music program does not use ASIO and the Delta ASIO drivers. If you are using the ASIO
drivers (see Mac Software Installation), you may want to leave the Sounds control panel
selection to “built-in.” With the Sounds control panel set to built-in, these Sound Manager
settings in the Delta Control Panel will have no effect, and your system sounds will come
from your internal sound card.
The Sound Manager driver limits you to using only one of the Delta 1010LT stereo input
pairs for audio input and only one of the stereo output pairs for output. These do not need
to be matched pairs- you can use inputs 1&2 for Sound In and S/PDIF for Sound Out, for
example, or any combination that you choose. The following screen shot shows the
Hardware Settings page on the Mac with the Sound Manager I/O set to “Analog 1&2” for
Input and “Analog 1&2” for Output. Once you have made a selection, go to the File menu
and “Save as Preferences.”
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