Method and apparatus for audio signal processing
US6476878B1 · kind B1 · utility
17Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1998 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Oct 21, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8106
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The method, apparatus, and system for controlling audio anomalies by using a mute switch 51 to prevent output of an auxiliary audio signal 21 in a television signal 20 with an auxiliary audio signal 21, such as a NICAM audio signal or dual language audio signal, adjacent to a first audio signal 22. The mute switch 51 operation is a function of the type of receiver 19 receiving television signal 20 and a function of verifying the presence of an auxiliary audio signal 21 in television signal 20. The present invention controls audio anomalies such as audio whistle and audio pop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.