I would like to work with percentages while doing some FFT with the web audio API.
To do so I need to know the range of the values the analyser.getByteFrequencyData returns.
I can't find anything about that, maybe someone knows?
Thanks
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xavier.seignard
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1The range is 0-255. For more information see this post http://stackoverflow.com/a/14789992/4303873 – RafaelKr May 03 '15 at 12:43
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thanks @Joriktos, if you post it as an answer, i'll gladly accept it – xavier.seignard May 03 '15 at 12:51
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analyser.getByteFrequencyData returns a normalized array of values between 0 and 255.
The length of the array is half the value of analyzer.fftSize. So if analyzer.fftSize = 1024 analyser.getByteFrequencyData will return an array with 512 values. Also see https://stackoverflow.com/a/14789992/4303873 for more information.
