Method and system for suppressing receiver audio regeneration
US7280958B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2005 |
| Grant date | Oct 9, 2007 |
| Priority date | — |
| Expiry date | Apr 8, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L21/013
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention concerns a method (500) and system (100) for suppressing receiver audio regeneration. The method (500) includes the steps of receiving a communication signal (502), at a Radio Frequency (RF) unit (102), demodulating the communication signal to an audio signal (504), monitoring a volume level of the audio signal (506), and shifting the pitch of the audio signal when the volume level reaches a predetermined threshold (508), and playing the pitch-shifted audio signal out of a speaker to produce a pitch-shifted acoustic signal (510). The method can shift the pitch of the audio signal to produce a pitch-shifted acoustic signal with signal properties suppressing regeneration of the acoustic signal onto the audio signal at the RF unit. The amount of pitch-shifting can be a function of the volume level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.