New method for extracting speech formants using LPC phase spectrum

A new method for formant extraction using the LPC phase spectrum is proposed, which is especially effective in finding merged peaks. The bandwidth of a formant is easily calculated from the magnitude of the third derivative of the LPC phase spectrum.

[1]  B. Atal,et al.  Speech analysis and synthesis by linear prediction of the speech wave. , 1971, The Journal of the Acoustical Society of America.