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This is a stupid question, but I really need to understand this.
android.media.audiofx.Visualizer
getfft(byte[] fft)
That is byte[] fft? Is it the array of frequency that fft I need go get?
It’s a Fast Fourier Transform.
http://en.wikipedia.org/wiki/Fast_Fourier_transform
In that method, you pass in an empty array to fill in. The array should be the size returned by
visualizer.getCaptureSize().