M-audio Transit

Install the card as explained in the M-audio documentation.

To open the settings for the M-audio sound card, click the  icon found at the bottom right .

In the settings we can set the sound card to handle 24 bits input (not output) and microphone input.

The first thing to do is to set the latency to Very High as shown below

The input has a DC voltage of 1-2 Volts that a standard multimedia microphone is using. To turn on the microphone gain, make sure that one of the +14, +20 or +26 settings are selected as shown below.

If you use this microphone boost/gain and you want to use system correction, it is recommended that you do a new system correction loopback measurement with the same gain. The self-noise on the mic inputs is rather high for high frequencies, it may be 16 dB at 10 kHz and 13 dB at 5 kHz (measured when input is connected to output).

To enable 24 bits input, make sure the setting below is selected.

Then you can open WinMLS, go to Measurement->Sound Card… and select 24 bits input as shown below.

To correctly measure system delay with this sound card, channel two has to be used as loopback.