Histogram-based processing of audio signals
US5579389A · kind A · utility
7Cited by
31References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1994 |
| Grant date | Nov 26, 1996 |
| Priority date | — |
| Expiry date | Dec 20, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13389
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A local histogram is generated with a controller based on local audio signals generated with a local microphone. A level of transmit attenuation and a level of receive attenuation are generated with the controller based on the local histogram. The local audio signals are attenuated with a transmit attenuator at the level of transmit attenuation for transmission to a remote node. Remote audio signals received from the remote node are attenuated with a receive attenuator at the level of receive attenuation for playback at a local speaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.