f0sp

A simple f0 estimation from a log. spectrum.

Usage

f0sp(sp, df, fmin, fmax, nc)

sp

log. spectrum

df

frequency resolution in Hz

fmin

minimum range for component search

fmax

maximum range for component search

nc

number of f0 components

Result

f0 in Hz. Set to 0 if detection fails.

Description

1. find all spectral peaks in the selected frequency range
2. select the nc highest peaks
3. find the smallest frequency difference of the selected peak (use lowest peak frequency as start value)
4. use this difference to compuet harmonic mean of selected peaks

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