Open Access

Applications of Surface Correlation to the Estimation of the Harmonic Fundamental of Speech

EURASIP Journal on Advances in Signal Processing20022002:897271

https://doi.org/10.1155/S1110865702000471

Received: 24 July 2001

Published: 14 January 2002

Abstract

We present a method for estimating the fundamental frequency of harmonic signals, and apply this method to human speech. The method is based on cross-spectral methods, which provide accurate resolution of multicomponent FM signals in both time and frequency. The fundamental is re-introduced to the spectrum by a frequency-lag autocorrelation of the spectrum, even if the fundamental is completely missing in the original spectrum. By combining the different perspectives of the Fourier spectral representation and the time-lag autocorrelation function we suppress all components of harmonic signals except for the fundamental.

Keywords

cross-spectrum phase spectrum STFT Fourier transform speech formant recovery equalization

Authors’ Affiliations

(1)
R523, U.S. Department of Defense

Copyright

© Nelson 2002