Radio receiver with audio selectivity
US4434508A · kind A · utility
12Cited by
8References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 3, 1981 |
| Grant date | Feb 28, 1984 |
| Priority date | — |
| Expiry date | Nov 3, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/1027
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system is disclosed in which signals are presented to a listener with a spatial impression in which the signal which is desired appears to be coming from a source in front of the listener while other signals appear to be coming from audio sources to the right and left of the listener. The same is achieved through a combination of a heterodyne type detector and a combination of high pass and low pass filters receiving the output of the detector. The outputs of the high and low pass filters are separately amplified and each sent to one ear of the listener.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.