Issues with audiorecorder function in Matlab online R2020a?

Hi. I'm using Matlab online R2020a and I have 2 microphones and 2 speakers connected in my laptop, but when I try to use audiorecorder function I received error message: "no audio input device found on this system". Are there issues with matlab online?

[RACHNA BANERJEE]

I think so . Because I am also facing this issue . .

[akash poman]

same problem

help me

[Walter Roberson]

@akash poman

It cannot be done in MATLAB Online in any current release.

Answer 1

[SC]

Try doing these and check if MATLAB is able to recognize your devices:

https://www.mathworks.com/help/audio/ref/audioplayerrecorder.getaudiodevices.html

https://www.mathworks.com/help/matlab/ref/audiodevinfo.html

if still the problem exists, check this out:

https://stackoverflow.com/questions/21244605/how-to-record-audio-in-matlab-online

[Eddy Armas]

I found that Matlab online not support audio toolbox add-on

Answer 2

[Walter Roberson]

As mentioned by @Eddy Armas

At least up to R2021a, MATLAB Online does not support audio input.

MATLAB Online does support some audio output, but only for the Chrome browser at the present time. Supported functions include sound(), soundsc(), and audioplayer()

https://www.mathworks.com/products/matlab-online/limitations.html

Answer 3

[Ali]

audioFilePath = 'C:\Users\YA_ATTAR_26\Documents\MATLAB\ansari1024.wav';
samplingRates = [44100, 22050, 11025, 8192, 4096, 2048, 1024];
resultsCell = cell(length(samplingRates), 4);

for i = 1:length(samplingRates)
    try
        [audioData, Fs] = audioread(audioFilePath);
        audioResampled = resample(audioData, samplingRates(i), Fs);
        
        disp(['Playing at Sampling Rate: ' num2str(samplingRates(i)) ' samples/sec']);
        
        if 0.5 == (Fs / samplingRates(i)) || (Fs / samplingRates(i)) < 0.5
            aliasing = 'No';
        else
            aliasing = 'Yes';
        end
        
        voiceQuality = input('Please provide your observation on voice quality (e.g., good, fair, poor): ', 's');
        
        fileSizeKB = numel(audioResampled) * 16 / 8 / 1024; % Assuming 16-bit audio
        
        % Store results in the cell array
        resultsCell{i, 1} = samplingRates(i);
        resultsCell{i, 2} = voiceQuality;
        resultsCell{i, 3} = fileSizeKB;
        resultsCell{i, 4} = aliasing;
        
    catch ME
        disp(['Error processing at sampling rate ' num2str(samplingRates(i)) ':']);
        disp(ME.message);
    end
end

% Display results in a table format
resultsTable = cell2table(resultsCell, 'VariableNames', {'SamplingRate', 'VoiceQuality', 'FileSizeKB', 'Aliasing'});
disp(resultsTable);

[Walter Roberson]

audioFilePath = 'C:\Users\YA_ATTAR_26\Documents\MATLAB\ansari1024.wav';

The discussion is about MATLAB Online's handling of audio. MATLAB Online cannot read files from Windows.