Method and apparatus to extract important frequency component of audio signal and method and apparatus to encode and/or decode audio signal using the same
US8612215B2 · kind B2 · utility
6Cited by
2References
21Claims
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Key dates
| Filing date | Oct 31, 2007 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Aug 27, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/093
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus to extract an important frequency component of an audio signal and a method and apparatus to encode and/or decode an audio signal by using the same. The method of extracting an important frequency component of an audio signal includes converting an audio signal of a time domain into an audio signal of a frequency domain, selecting a frequency band having a harmonic feature from the converted audio signal of the frequency domain, and extracting an important frequency component from the selected frequency band having the harmonic feature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.