Multiband phase-vocoder for the modification of audio or speech signals
US6868377B1 · kind B1 · utility
51Cited by
19References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 23, 1999 |
| Grant date | Mar 15, 2005 |
| Priority date | — |
| Expiry date | Nov 23, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/0204
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus to inexpensively and efficiently process audio and speech signals. A method for processing a signal having at least one region of interest is provided. The method begins by dividing the signal into a plurality of sub-band signals, wherein a selected sub-band signal includes the region of interest. The selected sub-band is processed by a phase vocoder to produce a vocoder output signal. Next, at least a portion of the subbands are time-aligned with the vocoder output signal. Finally, the aligned sub-band signals and the vocoder output signal are combined to form an output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.