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

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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?
  3 Comments
Danijel
Danijel on 28 Sep 2017
Needs to record for hours, but no audio is saved, just real time analysis.
Varun Wadia
Varun Wadia on 16 Feb 2019
Did this ever get resolved? I'm having a similar issue - but actually need to save the file

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Answers (1)

Walter Roberson
Walter Roberson on 16 Feb 2019
Yes, audio device reader from Audio System Toolbox is what you should be using for real time processing .

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