[webkit-dev] FFT normalization in RealtimeAnalyser

[Info]

This seems to be a bug... that has been fixed in Chromium: see  
chromium\src\third_party\WebKit\Source\modules\webaudio


Zitat von Info <info at wothke.ch>:

> In order to understand the idiotic differences between the data  
> ranges of the AnalyzerNode's getFloatFrequencyData() and  
> getByteFrequencyData() APIs I finally found myself analyzing the  
> WebKit sources:  
> https://github.com/WebKit/webkit/blob/master/Source/WebCore/Modules/webaudio/RealtimeAnalyser.cpp
>
> What surprises me there is the:
>     const double magnitudeScale = 1.0 / DefaultFFTSize;
> which is used to normalize the FFT results (see  
> RealtimeAnalyser::doFFTAnalysis()).
>
> Should the correct scaling factor not rather be: 2/actualFftSize?
>
>
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