View source: R/spectralDescr.R
harmHeight  R Documentation 
Internal soundgen function
harmHeight( frame, pitch, bin, freqs, harmThres = 3, harmTol = 0.25, harmPerSel = 5 )
frame 
the abs spectrum of a frame, as returned by

pitch 
the final pitch estimate for the current frame 
bin 
spectrogram bin width, Hz 
freqs 
frequency per bin of spectrogram 
harmThres 
minimum height of spectral peak, dB 
harmTol 
maximum tolerated deviation of peak frequency from multiples of f0, proportion of f0 
harmPerSel 
the number of harmonics per sliding selection 
Attempts to estimate how high harmonics reach in the spectrum  that is, at what frequency we can still discern peaks at multiples of f0 or, for lowpitched sounds, regularly spaced peaks separated by ~f0.
Returns the frequency (Hz) up to which we find harmonics
s = soundgen(sylLen = 400, addSilence = 0, pitch = 400, noise = 10, rolloff = 15, jitterDep = .1, shimmerDep = 5, temperature = .001) sp = spectrogram(s, samplingRate = 16000) hh = soundgen:::harmHeight(sp[, 5], pitch = 400, freqs = as.numeric(rownames(sp)) * 1000, bin = 16000 / 2 / nrow(sp))
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