Speech modeling with time varying amplitude and phase

Georgios B. Giannakis, Guotong Zhou

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Formant transitions contain important information related to hearing and perception. The concept of moving poles is used in this paper in relation to the time-varying impulse response model of the vocal tract and describes the trajectory of a formant. The model allows for amplitude modulation as well as other nonstationarities present such as formant bandwidth variations. The moving poles are modeled as polynomial functions of time, whose linear (albeit suboptimal) estimates are obtained from the higher-order ambiguity function. An overall optimal but nonlinear least squares scheme is developed to improve upon the linear estimates and both algorithms are tested by simulations.

Original languageEnglish (US)
Title of host publicationProc IEEE SP Int Symp Time Freq Time Scale Anal
Editors Anon
PublisherIEEE
Pages604-607
Number of pages4
StatePublished - Dec 1 1994
EventProceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis - Philadelphia, PA, USA
Duration: Oct 25 1994Oct 28 1994

Other

OtherProceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis
CityPhiladelphia, PA, USA
Period10/25/9410/28/94

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