Pitch extraction with inhibition of harmonics and...

Details Pitch extraction with inhibition of harmonics and... Pitch extraction with inhibition of harmonics and...

2008-02-26

2011-11-01

Harper, Vincent P (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S205000, C704S217000

Reexamination Certificate

active

08050910

ABSTRACT:
The fundamental frequency of a harmonic signal is estimated by forming a fundamental frequency hypothesis (f0′). A comb filter is provided based on the fundamental frequency hypothesis. The harmonic signal is filtered using the comb filter. The fundamental frequency hypothesis is tested for each tooth in the comb filter. A signal indicating an estimated fundamental frequency of the provided harmonic signal may be outputted based on the testing.

REFERENCES:
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patent: 1 686 561 (2006-02-01), None
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Marek Szczerba et al.,Pitch Detection Enhancement Employing Music Prediction, Journal of Intelligent Information Systems, 2005, pp. 223-251.

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