I need to play 3 sound files through 3 spatially located loudspeakers(front, left, right) all at the same time. We have a MOTU sound system connected to the 3 loudspeakers, however, psychportaudio shows 2 available channels instead of 3. Therefore, it does not allow me to make sound_mix = [sound1 sound 2 sound 3] and play through that device.
However, if I make a sound_mix = [sound1 sound 2] → it plays sound1 through the front speaker, sound2 through the left speaker while the right speaker plays BOTH sound1 & sound2.
Does anyone have any suggestion on how I can play 3 different sounds through 3 MOTU channels all at the same time and without mixing them with one another?
We are using Psychtoolbox 3 on Windows 10.