This Matlab function implements the SIFT algorithm for pitch extraction function [p] = sift (x, samp_rate) where p is a vector which holds the pitch frequency values in Hz at every 10 msec. -This Matlab function implements the SIFT algorithm for pitc

this function returns the SIFT descr iptors DESCR of the SIFT frames P defined on the octave G of the Gaussian scale space.