Friday, May 21, 2010

Pink noise beat analysis -part2

 

windowing effect in the spectrum

peak detection method

  1. method for AM sin wave
  2. http://www.mathworks.com/products/demos/shipping/dspblks/dspenvdet.html#7
  3. but for a drum beat, it fails, because the carrier wave is not a narrow band signal
  4. need to use the neighborhood method, details here http://billauer.co.il/peakdet.html
  5. noise in the signal can also effect the neighborhood method, so may need to to some threshold.
  6. peak can be sharp or flat, so

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