How to record audio from 4-ch MIC array device? (PSEye MIC)

I would like to record audio from 4-ch microphone array device named PSEye (PlayStation). I downloaded driver and the system (Windows7 64 bit) successfully finds the device as audio input device. However, on MATLAB, using 'audiorecorder' function, it can record up to only 2 channels. Is there any way to record 4-ch MIC signal?

Answer 1

[Walter Roberson]

See http://www.mathworks.com/matlabcentral/fileexchange/4017-pa-wavplay

[Dong gun Lee]

Thank you for your reply :) I tried that code, but it shows error message as follows. An error occured while using the portaudio stream Error number: -9997 Error message: Invalid device ID. I'm wondering if there is any example file for the pa_wavrecord function

Answer 2

[Dinesh Iyer]

Use the dsp.AudioRecorder systemm object to record more than 2 channels of data.

Dinesh

[Dong gun Lee]

Thanks for your reply :) However, when I set the parameter 'NumChannels' as 4, MATLAB gives error message as follows PortAudio Error: Invalid number of channels and, the error message does not come up when the num of channels is set as 2.

When I record audio with Audacity program, it successfully recognizes 4 channels... I wonder why......

[Walter Roberson]

Which MATLAB release are you using?

[Dong gun Lee]

Do you mean by the version of MATLAB? I'm using 2015b 32-bit on Win7 64-bit.

[Dinesh Iyer]

Please provide code to illustrate your exact steps. Are you using an ASIO driver to communicate with the device? If so, can you set the DSP preferences to select ASIO, the default is DirectSound.

[Dong gun Lee]

Now I'm using as follows

AR = dsp.AudioRecorder(16000,'NumChannels',4,'OutputNumOverrunSamples',true);

AFW = dsp.AudioFileWriter('myspeech4.wav','FileFormat', 'WAV');

disp('Speak into microphone now');

tic;

while toc < 10,

    [audioIn,nOverrun] = step(AR);

    step(AFW,audioIn);
    if nOverrun > 0
      fprintf('Audio recorder queue was overrun by %d samples\n'...
          ,nOverrun);
    end
  end
  release(AR);
  release(AFW);
  disp('Recording complete');

[Dong gun Lee]

and error comes out as follows

PortAudio Error: Invalid number of channels

[Dinesh Iyer]

The line:

    AR = dsp.AudioRecorder(16000,'NumChannels',4,'OutputNumOverrunSamples',true);

assumes that your 4 channel device is the default device on your system? Can you confirm that using the Windows Device Manager?

Are you using ASIO or DirectSound to communicate with the device? Check the DSP System Toolbox preferences.

Answer 3

[Lucas]

I'm with the same problem, using the PS3 Eye on Win7 and Matlab 2018b. Did you find a solution?