Microphone giving only zero-samples for 2019b on macOS 10.14 Mojave

What I did:

recObj = audiorecorder;
recordblocking(recObj, 5);
y = getaudiodata(recObj);

While talking out loud.

Expected for y to contain audio data.

Observed that y contains only 0-samples:

unique(y) 
ans =
     0    

Apple have introduced microphone (and webcam) privacy in macOS 10.14. It seems that applications have to "opt-in" in order for the user to get a pop-up asking for permission to use these devices. Is it possible that Mathworks forgot to do this?

https://developer.apple.com/documentation/avfoundation/cameras_and_media_capture/requesting_authorization_for_media_capture_on_macos

Opening '/Applications/MATLAB_R2019b.app/Contents/Info.plist', I see no references to '«Information Property List -> Privacy - Microphone Usage Description»'. Given that, I see no possibility that microphone can be usable on macOS 10.14 for MATLAB 2019b?

[Knut]

Work-around:

1) Start MATLAB from terminal:

cd Applications/MATLAB_2019b.app/bin
./matlab

2) Attempt to access the microphone using the script above.

3) Get a popup asking if terminal should have access to the microphone

4) Answer "yes"

5) Observe that MATLAB now gets non-0 microphone samples

[Atli Örn Friðmarsson]

In step nr. 2) - How do you access the microphone?

[trinh do]

cd Applications/MATLAB_2019b.app/bin
./matlab

After running ./matlab by terminal, you must run some code using microphone like:

recObj = audiorecorder;
recordblocking(recObj, 5);
y = getaudiodata(recObj);

You will get access the microphone request.

Thanks @Knut, It worked.