synchronous audio recording in matlab

To perform synchronous audio recording in MATLAB, you can use the audiorecorder function and the recordblocking function. Here is an example implementation:

main.m
% Set up audio recording
recObj = audiorecorder;
set(recObj, 'SampleRate', 44100);
set(recObj, 'Channels', 1);
set(recObj, 'BitDepth', 16);

% Set up the duration of the recording
recTime = 5; % 5 seconds

% Start recording
record(recObj);

% Wait for the recording to complete
recordblocking(recObj, recTime);

% Access the recorded data
audioData = getaudiodata(recObj);

% Play back the recorded audio
sound(audioData, recObj.SampleRate);
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In this example, we create an audiorecorder object with the desired sample rate, channel count, and bit depth. We then specify the desired recording duration in seconds and begin recording. We use the recordblocking function to pause execution until the recording is complete.

After the recording is complete, we can access the recorded audio data using the getaudiodata function. Finally, we can play back the recorded audio using the sound function.

Note that this implementation assumes synchronous recording with respect to system time. If you need to synchronize recording with other devices or external triggers, you may need to use additional hardware and software to achieve this.