Method and apparatus for transient detection and non-distortion time scaling
US6766300B1 · kind B1 · utility
40Cited by
5References
14Claims
0Family size
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Inventor
Key dates
| Filing date | Aug 20, 1999 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Aug 20, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2210/385
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A method and apparatus for transient detection and time-scaling an audio signal detects transients and scales only intervals located between transients to avoid artifacts. In one embodiment, the transient detection process compares frequency characteristic energy between succeeding windows of the audio signal and calculates values of an energy curve where the energy increases. Transients are detected at maxima of the energy curve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.