Invention Grant
- Patent Title: Pitch extraction with inhibition of harmonics and sub-harmonics of the fundamental frequency
- Patent Title (中): 音调提取具有抑制谐波和次谐波的基频
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Application No.: US12037892Application Date: 2008-02-26
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Publication No.: US08050910B2Publication Date: 2011-11-01
- Inventor: Frank Joublin , Martin Heckmann
- Applicant: Frank Joublin , Martin Heckmann
- Applicant Address: DE Offenbach/Main
- Assignee: Honda Research Institute Europe GmbH
- Current Assignee: Honda Research Institute Europe GmbH
- Current Assignee Address: DE Offenbach/Main
- Agency: Fenwick & West LLP
- Priority: EP07104807 20070323
- Main IPC: G10L11/04
- IPC: G10L11/04
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.
Public/Granted literature
- US20080234959A1 Pitch Extraction with Inhibition of Harmonics and Sub-harmonics of the Fundamental Frequency Public/Granted day:2008-09-25
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