get rms of audio in matlab

To calculate the RMS of an audio signal in MATLAB, you can use the rms function which takes the audio signal as its input and outputs its RMS value.

Here's a simple example:

main.m
% Load the audio file
[y, Fs] = audioread('myfile.wav');

% Calculate the RMS of the audio signal
rms_val = rms(y);

% Print the result
disp(['RMS value: ' num2str(rms_val)]);
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In this example, audioread function is used to load the audio file into the variable y and the sampling frequency into Fs. The rms function is then used to calculate the RMS value of the audio signal stored in y, which is assigned to the variable rms_val. Finally, the RMS value is displayed using the disp function.

Note that the rms function calculates the RMS value of the entire audio signal. If you want to calculate the RMS value over a shorter duration of the audio signal, you can select a segment of the audio signal using array indexing before passing it to the rms function.