How to acquire external sensor data via USB with MATLAB Mobile

I would like to record data from an external microphone which is connected to the USB port of an Android smartphone.

At the same time, GPS data should be recorded.

MATLAB Mobile offers easy access to the internal sensors of the Android smartphon but I cannot find an option to access external sensors / the USB interface.

Are there solutions?

Answer 1

[Suraj]

Hey Robin,

From my usage of MATLAB Mobile, I can see that it recognizes individual internal microphones on the device, as well as external peripherals. I was able to record audio from my bluetooth headset using "mobiledev" function.

I followed the below example,

https://www.mathworks.com/help/matlabmobile/ug/acquire-audio-data-from-a-mobile-device-microphone.html

You can select the microphone of your choice from the MATLAB Mobile app by navigating to Sensors > Sampling Parameters > Microphone, and selecting from the list of available microphones. You can even do this programmatically by running,

m.SelectedMicrophone = m.AvailableMicrophones{1}  % Change the index according to the list of available mics

If other apps on your Android device can recognize your USB mic, then so should MATLAB.

I hope this helps!