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 language | English (US) |
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| Title of host publication | Proc IEEE SP Int Symp Time Freq Time Scale Anal |
| Editors | Anon |
| Publisher | IEEE |
| Pages | 604-607 |
| Number of pages | 4 |
| State | Published - Dec 1 1994 |
| Event | Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis - Philadelphia, PA, USA Duration: Oct 25 1994 → Oct 28 1994 |
Other
| Other | Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis |
|---|---|
| City | Philadelphia, PA, USA |
| Period | 10/25/94 → 10/28/94 |