unrecognized function or variable 'helperspeechSpectrograms'

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Utsav Pandya 2022-3-9

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https://ww2.mathworks.cn/matlabcentral/answers/1667424-unrecognized-function-or-variable-helperspeechspectrograms

评论： Adam Danz 2022-7-13

I am using the helperspeechSpectrogram function in a Speech Emotion Recognition progam, and I have the toolboxes installed required for this function.

I am using another function, helperReadSPData, from the same toolboxes which works without errors. if anyone could help me out with what is going wrong here, it would be a big help.

segmentDuration=60000*(1/16000);
frameDuration=0.046;
hopDuration=0.023;
numBands=128;
epsil=1e-6;
scadts_Train=transform(adsTrain,@(x)helperReadSPData(x))
XTrain=helperspeechSpectrograms(scadts_Train,segmentDuration,frameDuration,hopDuration,numBands);
scadts_Test=transform(adsTest,@(x)helperReadSPData(x));
XTest=helperspeechSpectrograms(scadts_Test,segmentDuration,frameDuration,hopDuration,numBands);

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Rimsha Muzaffar 2022-7-13

should we take another class to define this function or define them in same

this one na

function x = helperReadSPData(x)

% This function is only for use Wavelet Toolbox examples. It may change or

% be removed in a future release.

N = numel(x);

if N > 8192

x = x(1:8192);

elseif N < 8192

pad = 8192-N;

prepad = floor(pad/2);

postpad = ceil(pad/2);

x = [zeros(prepad,1) ; x ; zeros(postpad,1)];

end

x = x./max(abs(x));

end

I am actually confused where to write this

Adam Danz 2022-7-13

MATLAB has to know that helperReadSPData exists. One way to do that is to put the function in an m-file and store the m-file on your matlab path (perhaps in the same folder you are working in). Another way to do that is to define the function at the end of the m-file you're working in. For more info, see Create Function in Files from the documentation.

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