Here is my setup:
- I have an IMU sensor connected to my laptop over USB
- I have a 2-channel MEMS microphone connected to another USB port on my laptop. (I am using a MEMS microphone to USB audio interface)
I would like to record data from the IMU and the microphones simultaneously. I am able to properly record data individually from the IMU using serialport() and microphone using audioDeviceReader().
However, when I try to do them both together i.e. by using both the commands inside a while loop as shown below, the recorded data is not clean. For instance, I can hear audio artifacts in the microphone recording.
Essentially, I am asking if there is a way to parallelize this process so that the IMU and mics can be recorded simultaneously. Is there a way to leverage the Parallel Computing Toolbox for this purpose?
Code for what I am trying to do:
% Create serial port object for IMU
srl = serialport("/dev/cu.usbmodemcf3fb1281", 9600);
% Create serial port object for Audio
adr = audioDeviceReader('Device', 'MCHStreamer PDM16', ...
'SampleRate', 16000, ...
'SamplesPerFrame', 32, ...
'NumChannels', 2);
setup(adr);
afw = dsp.AudioFileWriter("audio.wav", 'FileFormat', 'WAV', 'SampleRate', 16000);
%% Log Data
disp('--- Start Logging ---');
tic;
while toc <= logTime
% Audio
audiodata = adr();
afw(audiodata);
% IMU
imudata = readline(srl);
writelines(imudata, "imu.txt", WriteMode="append");
end
disp('--- End Logging ---');
