Energy-based nonuniform time-scale modification of audio signals
US7426470B2 · kind B2 · utility
13Cited by
18References
8Claims
0Family size
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Key dates
| Filing date | Oct 3, 2002 |
| Grant date | Sep 16, 2008 |
| Priority date | — |
| Expiry date | Nov 22, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L21/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for energy based, non-uniform time-scale compression of audio signals includes receiving a frame of data corresponding to an input audio signal and segmenting the data into a plurality of segments. The method further includes estimating a value related to energy of the frame of data, determining a peak energy estimate for the frame, determining an energy threshold based on the peak energy estimate of the frame and comparing the value related to energy of the frame of the data with the energy threshold to control time-scale compression of the audio data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.