Method and apparatus for tracking pitch in audio analysis
US6917912B2 · kind B2 · utility
16Cited by
14References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2001 |
| Grant date | Jul 12, 2005 |
| Priority date | — |
| Expiry date | Mar 2, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/90
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computationally efficient and robust pitch detection and tracking system and related methods are presented. According to certain exemplary implementations a method is presented comprising identifying an initial set of pitch period candidates using a first estimation algorithm, filtering the initial set of candidates and passing the filtered candidates through a second, more accurate pitch estimation algorithm to generate a final set of pitch period candidates from which the most likely pitch value is selected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.