macOS Catalina Microphone Will Not Record

recording = audiorecorder;
disp('Initiate Recording')      % clues user that the recording  has started
recordblocking(recording, 1.5); % records a sound for 1.5 sec, default sampling frequency is 8000 Hz
disp('End')                     % clue user that the recording has ended
play(recording)                 % plays the recorded sounds
recordingD = getaudiodata(recording); % stores data in a double format array

I am attempting to use the above code to record audio from Matlab, but the recordingD array is always 0 no matter what. I have tried using my MacBook Pro's built in microphone and two external microphones to no avail. Please help!

[Walter Roberson]

In system preferences you need to give matlab access to the microphone. However I saw a posting recently that said that is not working for some people.

[neruk41]

Matlab doesn't even show as an option in my system preferences for access to microphone.

[Walter Roberson]

https://support.apple.com/en-ca/guide/mac-help/mchla1b1e1fe/mac

Possibly you will need to Unlock and then + to add a new app. I do not have Catalina so I do not have that preference myself.

[Nikith Erukulla]

I figured it out, thanks for the help!

[Devon A. Minor]

What did you do to solve the problem? I am currently having the same issue now.

[Nikith Erukulla]

Run matlab from the terminal

[Victor Fisica Molpeceres]

I run matlab from the terminal, but i cant solve this problem.

Command used: open /Applications/MATLAB_R2019b.app

Is that right? May I use any option?

Thanks!

[Walter Roberson]

Experiment with

/Applications/MATLAB_R2019b.app/bin/matlab

[Walter Roberson]

open /Applications/MATLAB_R2019b.app

appears to work as well to start MATLAB. I do not know if it would be started with the access you need, though; I would be more confident of that with running the /bin version.

Answer 1

[Walter Roberson]

In system preferences you need to give matlab access to the microphone.

https://support.apple.com/en-ca/guide/mac-help/mchla1b1e1fe/mac

Possibly you will need to Unlock and then + to add a new app. I do not have Catalina so I do not have that preference myself.

However I saw a posting recently that said that is not working for some people. If I recall correctly the person was working with High Sierra, and indicated that as being the first MacOS with that system preference.