You can utilize the "ALSA Audio Capture" block from the "Simulink Support Package for Raspberry Pi Hardware" to read audio data from a microphone connected to the Raspberry Pi. This block captures audio data and outputs it as an N-by-C matrix, where Nrepresents the samples per audio channel, and C indicates the number of channels supported by the audio device. For more details on the "ALSA Audio Capture" block, please refer to this documentation page: https://www.mathworks.com/help/simulink/supportpkg/raspberrypi_ref/alsaaudiocapture.html.
Additionally, you can consult the following tutorial, which explains how to capture and process audio data using a Raspberry Pi: https://www.mathworks.com/help/simulink/supportpkg/raspberrypi_ref/get-started-with-audio-signal-processing-using-raspberry-pi.html.
I hope this answers your question.
