Finding speech formants and modulations via energy separation: with application to a vocoder

Authors:
Helen M. Hanson;Petros Maragos;Alexandros Potamianos
Affiliations:
Harvard University, Cambridge, MA;Harvard University, Cambridge, MA;Harvard University, Cambridge, MA
Venue:
ICASSP'93 Proceedings of the 1993 IEEE international conference on Acoustics, speech, and signal processing: speech processing - Volume II
Year:
1993

Citing 1
Cited 0

Speech nonlinearities, modulations, and energy operators

ICASSP '91 Proceedings of the Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference

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Abstract

An experimental system that uses an energy-tracking operator and a related energy separation algorithm to automatically find speech formants and amplitude/frequency modulatiOns in voiced speech segments is presented. Initial estimates of formant center frequencies are provided by either LPG or morphological spectral peak picking. These estimates are improved by a combination of bandpass filtering and iterative application of energy separation. The system is shown to be effective. Its application to an AMFM vocoder is also discussed.