How can I record using audiorecorder function on MATLAB more than 2 channels?

Hi I need to record output from three channels using audiorecorder functions. Currently I can record upto two channels and I am using the code recOBJ = audiorecorder(fs,nBits,2,-1);But the program fails if i change "2" to 3 or more numbers.Need help in this regard

Answer 1

[Walter Roberson]

This is not possible using audiorecorder.

https://www.mathworks.com/help/audio/gs/real-time-audio-in-matlab.html

Question: are you doing sound location? If you are then it is important to synchronize the channels. Some people invoke multiple audiorecorder to try to handle multiple channels, but that does not have synchronization accuracy.

[TRISHITA BANERJEE]

This is not correct for my work

[Walter Roberson]

What is not correct for your work? Do you mean that you are not doing sound location?

If you do not need careful channel synchronization, then sometimes it is satisfactory to combine samples from different devices, possibly even devices with different kinds of interfaces. But it is usually better to have all of the channels on the same device and use the calls provided by the Audio System Toolbox (at least until you start to fill up the bandwidth of the interface.)