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2014/10/15 ¤U¤È 10:15:58
iphone Programming Glossary: windowsizeFFT on iPhone to ignore background noise and find lower pitches http://stackoverflow.com/questions/7181630/fft-on-iphone-to-ignore-background-noise-and-find-lower-pitches framework. UPDATE The accelerate framework actually has some windowing functions. I setup a basic window like this windowSize maxFrames transferBuffer float malloc sizeof float windowSize window float malloc sizeof float windowSize memset window.. windowing functions. I setup a basic window like this windowSize maxFrames transferBuffer float malloc sizeof float windowSize window float malloc sizeof float windowSize memset window 0 sizeof float windowSize vDSP_hann_window window windowSize vDSP_HANN_NORM.. like this windowSize maxFrames transferBuffer float malloc sizeof float windowSize window float malloc sizeof float windowSize memset window 0 sizeof float windowSize vDSP_hann_window window windowSize vDSP_HANN_NORM which I then apply by inserting..
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