Error converting Logical to Char (Horzcat Error)

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angry paul
angry paul 2021-4-20
评论： Sharena Natasha Nor Hisham 2022-1-21
afe = audioFeatureExtractor( ...
'SampleRate',fs, ...
'FFTLength',512, ...
'Window',hann(frameSamples,'periodic'), ...
'OverlapLength',frameSamples - hopSamples, ...
'barkSpectrum',true);
numBands = 50;
setExtractorParams(afe,'barkSpectrum','NumBands',numBands,'WindowNormalization',false);
In this line of code, I am receiving an error of converting logical to char (Horzcat error). How to solve this issue?
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Rik
Rik 2021-4-20
Ran in:
fs = 16e3; % Known sample rate of the data set.
segmentDuration = 1;
frameDuration = 0.025;
hopDuration = 0.010;
segmentSamples = round(segmentDuration*fs);
frameSamples = round(frameDuration*fs);
hopSamples = round(hopDuration*fs);
overlapSamples = frameSamples - hopSamples;
FFTLength = 512;
numBands = 50;
afe = audioFeatureExtractor( ...
'SampleRate',fs, ...
'FFTLength',FFTLength, ...
'Window',hann(frameSamples,'periodic'), ...
'OverlapLength',overlapSamples, ...
'barkSpectrum',true);
setExtractorParams(afe,'barkSpectrum','NumBands',numBands,'WindowNormalization',false);
disp('completed without error')
completed without error
Which release are you using?

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回答（1 个）

Walter Roberson
Walter Roberson 2021-4-20
编辑：Walter Roberson 2021-4-20
It is a bug in some versions of Audio System Toolbox. In later versions the line
if isscalar([varargin{:}])
has been replaced with
numin = numel(varargin);
if numin==1 && isscalar([varargin{:}])
I will post exact line numbers once I finish installing the old version to check against.
The problem was fixed by no later than R2020b
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Walter Roberson
Walter Roberson 2022-1-20
R2020b was the first release to support WindowNormalization.
In R2020a and before, there is a 'Normalization' parameter that can be set to 'area' or 'bandwidth', but this is not the same thing.
In R2020b, 'Normalization' was renamed to 'FeatureBankNormalization', and 'WindowNormalization' was added.
I do not seem to find any information as to what WIndowNormalization actually does.

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