How can convert .wav file to .mat file ?

Hello, I am trying to covert .w to .mat file and I should to using it in my program Help me plezzzzzzz :(

[sanjana]

% Load the audio file

[input_audio_file, input_audio_path] = uigetfile({'*.wav', 'Audio Files (*.wav)'}, 'Select an Audio File');

if isequal(input_audio_file, 0)

disp('User canceled the file selection.');

return; % Exit if no file is selected

else

% Construct the full file path

full_audio_path = fullfile(input_audio_path, input_audio_file);

[primary, fs] = audioread(full_audio_path); % Read the audio file

disp(['Audio file ', input_audio_file, ' successfully loaded.']);

end

% Assuming 'reference' is another signal you have (you need to define it)

% For demonstration, let's create a dummy reference signal

reference = rand(size(primary)); % Replace this with your actual reference signal

% Parameters

primary_size = size(primary, 1); % Number of samples in primary signal

Epsilon = 0.0001;

AllData = zeros(1, 3);

order = 30; % Filter order

W_1 = zeros(order, 1);

W_2 = zeros(order, 1);

performance_curve1 = zeros(primary_size, 1);

performance_curve2 = zeros(primary_size, 1);

primary_wrt_filter = primary(order + 1:end); % Truncate primary

reference_wrt_filter = zeros((primary_size - order), order);

% Create reference_wrt_filter according to filter

for update = order:primary_size

reference_wrt_filter((update - order + 1), :) = reference(update - (1:order));

end

disp(size(reference_wrt_filter, 1));

% Learning rate

Nu = 0.05;

for iterateReference = 1:size(reference_wrt_filter, 1)

MSE = 0;

X = reference_wrt_filter(iterateReference, :);

% Calculate error for W_1

Error = primary_wrt_filter(iterateReference) - (reference_wrt_filter(iterateReference, :) * W_1);

Nu_by_Epsilon = Nu / (Epsilon + (X * X'));

W_1 = W_1 + (Nu_by_Epsilon * (Error * X)');

errorSquare = (primary_wrt_filter(1:iterateReference) - (reference_wrt_filter(1:iterateReference, :) * W_1)).^2;

MSE = sum(errorSquare) / iterateReference;

performance_curve1(iterateReference) = MSE;

% Calculate error for W_2

if iterateReference >= 46501

Error = primary_wrt_filter(iterateReference) - (reference_wrt_filter(iterateReference, :) * W_2);

W_2 = W_2 + (Nu_by_Epsilon * (Error * X)');

errorSquare1 = (primary_wrt_filter(46501:iterateReference) - (reference_wrt_filter(46501:iterateReference, :) * W_2)).^2;

MSE = sum(errorSquare1) / (iterateReference - 46500);

performance_curve2(iterateReference - 46500) = MSE;

end

end

% Output signals

Out = (primary_wrt_filter(1:46500) - (reference_wrt_filter(1:46500, :) * W_1));

Out1 = (primary_wrt_filter(46501:end) - (reference_wrt_filter(46501:end, :) * W_2));

Out3 = vertcat(Out, Out1);

% Calculate SNR

SNR_parameter = mean(primary_wrt_filter.^2) / mean(Out3.^2);

SNR_After = 10 * log10(SNR_parameter);

% Plotting results

figure;

plot(performance_curve1);

title('Learning Curve For Filter Order = 30 and Iteration < 46.5K');

xlabel('Iteration -->');

ylabel('MSE -->');

legend('Nu = 0.05');

figure;

plot(performance_curve2);

title('Learning Curve For Filter Order = 30 and Iteration > 46.5K');

xlabel('Iteration -->');

ylabel('MSE -->');

legend('Nu = 0.05 ');

figure;

plot(Out3);

title('Error Signal After Applying NLMS For Filter Order = 30');

xlabel('Iteration -->');

ylabel('Error (Desired Output Signal) -->');

legend('Nu = 0.05');

% Optionally play the output sound

soundsc(Out3, fs);

Answer 1

[Wayne King]

Use wavread to read the file into MATLAB. Then, use save to save the file as a .mat file.

See the help for wavread and save

[fatimah]

in the command line of the matlab first i was wrote wavread signal.wav

then the command line give me the value of this wave

then i was wrote save ans next i have ans.mat

put when I load it in the wavemenu make me error message.

[Wayne King]

What error did you get? and how did you save the .wav file, did you save the whole workspace by mistake

Try this:

[sig,fs] = wavread(filename);

save('testsig.mat','sig');

[fatimah]

Thanks

I tray

[sig,fs] = wavread(filename);

save('testsig.mat','sig');

and I get testing.mat

put I need to generated my matlab code from wavemenu -> multiple 1-D ->multivariate Denoising

put I can't do that "I don't have the choice in the file menu"

How I can do that can you help me :\

and thank you for every thing :)

[Wayne King]

but wait, the output from one .wav file should not be a multivariate signal

[fatimah]

my wave file is content mixed signal ..

can you help me to generate my denoising code

[Wayne King]

So it's just a Nx1 vector. Then just use wavelet 1-D. All noisy signals are "content-mixed signals". By the way, on any wavemenu subitem, you can always use Import from Workspace, you don't have to save the data as a .mat file.