A method of estimating the instantaneous frequency of the speech signal in a local maximum

摘要

A method of estimating the instantaneous frequency of the signal at a local maximum (positive local maximum negative local minimum) x [n], characterized in that operate estimate the instantaneous frequency wv point by fitting the signal in a neighborhood of this point function of the form u (t) = Acos (wt ) + Bsin (wt), to which instantaneous frequency at any point is equal to w, and does not depend on the coefficients A, B, and calculates an estimate wmgnovennoy frequency at this point based on the relationship between x [n-1] + x [n + 1] , x [n] and a sampling frequency f, used when recording speech signal.