A Method for Low-Delay Pitch Tracking and Smoothing

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Abstrakt

In this paper, a new method for pitch tracking is presented. The method is comprised of two steps. In the first step, accurate pitch estimates are obtained on a sample-by-sample basis by updates of the signal statistics with an exponential forgetting factor and subse- quent numerical optimization. In the second step, a Kalman filter is used to smooth the estimates and separate the pitch into a slowly varying component and a rapidly varying component. The former represents the mean pitch while the latter represents vibrato, slides and other fast changes. The method is intended for use in applica- tions that require fast and sample-by-sample estimates, like tuners for musical instruments, transcription tasks requiring details like vi- brato, and real-time tracking of voiced speech.
OriginalsprogEngelsk
TidsskriftI E E E International Conference on Acoustics, Speech and Signal Processing. Proceedings
Vol/bind2012
Sider (fra-til)345-348
Antal sider4
ISSN1520-6149
DOI
StatusUdgivet - 2012
BegivenhedIEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP - Kyoto, Japan
Varighed: 25 mar. 201230 mar. 2012

Konference

KonferenceIEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP
LandJapan
ByKyoto
Periode25/03/201230/03/2012

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