Issues with audiorecorder function in Matlab online R2020a?

Question

Eddy Armas 2020-6-30

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https://ww2.mathworks.cn/matlabcentral/answers/557461-issues-with-audiorecorder-function-in-matlab-online-r2020a

评论： Walter Roberson 2024-1-7

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?

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akash poman 2021-4-15

编辑：Walter Roberson 2021-4-15

same problem

help me

Walter Roberson 2021-4-15

@akash poman

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

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Answer 1

SC 2020-7-1

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https://ww2.mathworks.cn/matlabcentral/answers/557461-issues-with-audiorecorder-function-in-matlab-online-r2020a#answer_459400

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

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Eddy Armas 2020-7-4

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

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Answer 2

Walter Roberson 2021-4-13

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https://ww2.mathworks.cn/matlabcentral/answers/557461-issues-with-audiorecorder-function-in-matlab-online-r2020a#answer_673896

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

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Answer 3

Ali 2024-1-7

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https://ww2.mathworks.cn/matlabcentral/answers/557461-issues-with-audiorecorder-function-in-matlab-online-r2020a#answer_1384766

编辑：Walter Roberson 2024-1-7

在 MATLAB Online 中打开

EE_21019_NAFEES_TAUHEED (1)(1).slx

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);