Audio Queues for multi channel real time audio processing on Mac

2
votes

I have a 4 mic array connected to an iMac via an external audio interface (RME Fireface). I need to record from all 4 simultaneously, get individual signals, perform some operations, and play an output sound, all in real time.

First of all, the audio inputs in Mac system preferences does not show 4 separate devices but just one RME FireFace. How then, can i find the port addresses for each mic?

Secondly, the main question - Can i use Audio Queues for this purpose? The Audio queues documentation has no clear information on multi channel audio input and signal processing.

1
macosreal-timeaudio-recordingaudioqueueservices
You will probably just be capturing one stream of 4 channel audio - the samples for each of the 4 mics will be interleaved. – Paul R

1 Answers

0
votes

Audio Queues does not support input from 4 channels simultaneously, based on [this thread].(http://www.mailinglistarchive.com/html/[email protected]/2011-01/msg00174.html).

You probably have to go with CoreAudio, which is a lower level API but claims "scalable multichannel input and output" which is exactly what you want.