Patent · US Active

Systems, methods, and apparatus for speech feature detection

US9165567B2 · kind B2 · utility

22Cited by

14References

50Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventors

Erik Visser · San Diego, US
Ian Ernan Liu · Baldwin Park, US
Jongwon Shin · Gwangju, KR

Key dates

Filing date	Apr 22, 2011
Grant date	Oct 20, 2015
Priority date	—
Expiry date	Mar 27, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG10L25/78
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Implementations and applications are disclosed for detection of a transition in a voice activity state of an audio signal, based on a change in energy that is consistent in time across a range of frequencies of the signal. For example, such detection may be based on a time derivative of energy for each of a number of different frequency components of the signal.

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