Patent · US Expired

Reduced complexity voice activity detector

US6876965B2 · kind B2 · utility

4Cited by

7References

14Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Fisseha Mekuria · Lund, SE
Joakim Persson · Lund, SE

Key dates

Filing date	Feb 28, 2001
Grant date	Apr 5, 2005
Priority date	—
Expiry date	Feb 21, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH04B1/46
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

A voice activity detector is disclosed for use with a radio transmitter to continuously sense the presence of speech in an audio signal. Initially, the audio signal is processed to produce a train of signal samples. Signal peaks are identified therefrom, which are used to compute respective values for a succession of quasi-pitch periods associated with the signal sample train. The quasi-pitch period values are then selectively compared with one another, in order to determine the presence or absence of a speech component.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.