plot average noise level of multiple audio files in matlab

main.m
% set file names
file_names = {'file1.wav', 'file2.wav', 'file3.wav'};

% initialize variables
snrs = zeros(1, numel(file_names));

% loop through files
for i = 1:numel(file_names)
    % read audio file
    [audio, Fs] = audioread(file_names{i});

    % compute noise level
    [~, snr_db] = snr(audio, Fs);

    % store noise level
    snrs(i) = snr_db;
end

% plot average noise level
plot(mean(snrs));
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