I hope the following steps can guide you.
- Add an audioRecorder object to your App Designer app. You can do this by adding a button or other UI component that calls a callback function when pressed. In this function, create an audioRecorder object using the audiorecorder function, and set the sample rate and number of channels.
- Add a loop to continuously read and process audio data. In this loop, use the record method of the audioRecorder object to record a fixed length of audio data (e.g., 0.1 seconds). Then, use the getaudiodata (Store recorded audio signal in numeric array - MATLAB getaudiodata (mathworks.com)) method to retrieve the recorded data as a vector of samples. You can then use this data to compute the spectrum or other characteristics of the audio signal.
- Plot the audio data in real-time. You can use the plot function to create a line plot of the audio data, and update this plot each time a new chunk of data is recorded.
