Apparatus and method for level-dependent companding for wireless audio noise reduction
US6597301B2 · kind B2 · utility
28Cited by
13References
45Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 3, 2001 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Oct 3, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/64
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Apparatus and method that mitigate the noise incurred on a wireless communications path between an encoder and a decoder of a wireless audio noise reduction system that utilizes frequency modulation (FM). The encoder includes a variable compressor that invokes compression whenever the input signal is above a first threshold level. The decoder includes a variable expander that invokes expansion whenever the received signal from the decoder is above a second threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.