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/diy/ - Do-It-Yourself


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>> No.2470918 [View]
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Would a fourier transform or wavelet transform be better for characterizing the sound of tapping on different surfaces? I'm trying to train a machine learning model to identify different tapping sounds. So far I've used a canned FFT function on raw audio data and have been able to train one to tell a desk tap from a keyboard key press almost every time. Although taps on similar sounding surfaces have proven more difficult. Would wavelets be better? I know that Fourier transforms are best for stationary signals whose frequencies don't change over time. I can't imagine these sounds have unwavering frequencies, but perhaps they are brief enough to where that doesn't matter?

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