Need continuous sound played from buffer A then B. I fill B while A is playing, then visa versa.

Hello,

I would like to use MATLAB for a real-time sound output problem. If I could set up a sound to play from buffer A then buffer B continuously, I could work on the contents of the buffer that isn't "live" while the other is playing.

I would like to use MATLAB because I need FFT and other things that MATLAB handles well as part of my calculations for filling the buffer that isn't live.

I haven't had much success with audioplayer because of the rather large (audio-wise) and variable delays between starting different player objects.

Any suggestions how to approach playing sound continuously from two buffers?

Thank you, DS

Answer 1

[jibrahim]

Hi David,

For real-time sound applications, you should use audioDeviceWriter:

https://www.mathworks.com/help/audio/ref/audiodevicewriter-system-object.html

See the doc page above for a simple example.

To handle buffers at real-time, consider using dsp.AsyncBuffer:

https://www.mathworks.com/help/dsp/ref/dsp.asyncbuffer-system-object.html

[David W Purcell]

Thank you! I will check it out (and will likely have some questions, but thanks!).

Best wishes, DS