audiorecorder is "not intended for long recordings". What is?

Hi, I need to do a continious, long audio recording.

I tried audiorecorder object, set up a callback using TimerFcn and TimerPeriod properties to have a periodic frame-by-frame audio data readout. It worked fine, but I soon figured that audiorecorder accumulates audio in an infinite buffer, and soon consumes too much memory. The docs say: " audiorecorder is not intended for long, high-sample-rate recording. audiorecorder uses system memory for storage and does not use disk buffering. When you attempt a large recording, your MATLAB performance sometimes degrades over time."

Is there a way to get around this?

If audiorecorder is "not intended for long recordings", what is?

Should I switch to audioDeviceReader from AudioSystemToolbox?

Or maybe daq from Data Acquisition Toolbox?

[Steven Lord]

How long is long in your application? Are you planning to record for an uninterrupted session lasting minutes, hours, days, weeks, or longer?

[Danijel]

Needs to record for hours, but no audio is saved, just real time analysis.

[Varun Wadia]

Did this ever get resolved? I'm having a similar issue - but actually need to save the file

Answer 1

[Walter Roberson]

Yes, audio device reader from Audio System Toolbox is what you should be using for real time processing .