Device ID problems

Hey guys,

So I am doing this experiment where I need to send out audio to 8 different speakers. 1 speaker is constant in all of the trials. In each trial, 2 sounds are sent out simultaneously. The other sound is randomly sent to one of the other 7. I have this script here which was sent to me by a colleague which can play multichannel sounds.

The syntax for the multichannel sound player is this -

pawavplaya(buffer', deviceid, Fs, 0, 0, 0, -1);

In her program, my colleague only uses one device, i.e. deviceid = 0. the 'buffer' which is the sound has a Nx2 matrix which contains the sound. If one column is 0, only one lead plays out the sound in one speaker and so on.

would anyone here know how to get deviceids for all 8 speakers? I tried the default matlab command but it doesn't work on a mac!!

[Daniel Shub]

How many soundcards do you have? How many channels do they have?

Answer 1

[Daniel Shub]

Have you tried the sound part of psychtoolbox: http://psychtoolbox.org/HomePage

[Abhilash]

Yes, but it doesn't really provide support for what I want.

[Daniel Shub]

What part of http://docs.psychtoolbox.org/PsychPortAudio doesn't provide the support for what you want. I am not suggesting it for everything, just as a replacement for pawavplay. It supports 8-channel sound cards and multiple soundcards. It also supports polling to determine device ids.

[Abhilash]

I tried both and both don't seem to work for me. I am going to post a new question which should now clear up what exactly I am looking to do.

Thanks for answering! :)