Quantizing error reducer for audio signal
US5204677A · kind A · utility
42Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1991 |
| Grant date | Apr 20, 1993 |
| Priority date | — |
| Expiry date | Jul 12, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/665
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
There is provided a quantizing error reducer for an audio signal, which is constructed to feed a quantizing error back to the input side of a quantizer through a noise filter, wherein the coefficient of the noise filter is set on the basis of information relating to the equiloudness curve, thereby making it possible to reduce the noise in the hearing sense.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.