Digital audio limiter
US5579404A · kind A · utility
226Cited by
11References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 16, 1993 |
| Grant date | Nov 26, 1996 |
| Priority date | — |
| Expiry date | Feb 16, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H60/71
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A signal processing system comprising components such as split-band perceptual coders can receive a peak amplitude limited input audio signal and can process the signal in such a manner that the processed signal preserves the apparent loudness of the input signal but is no longer peak-amplitude limited. In one embodiment, upsampling is used in estimating the resultant peak amplitude and gain factors established in response to the estimated peak amplitude are applied to one or more frequency subbands of the processed signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.