Patent · US Active

Signal pitch period estimation

US8185384B2 · kind B2 · utility

3Cited by

1References

19Claims

0Family size

Assignee

CAMBRIDGE SILICON RADIO LIMITED · GB

Inventors

Xuejing Sun · Rochester Hills, US
Sameer Gadre · Northville, US

Key dates

Filing date	Apr 21, 2009
Grant date	May 22, 2012
Priority date	—
Expiry date	Mar 1, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG10L19/005
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method and apparatus for estimating the pitch period of a signal. The method includes identifying a first candidate pitch period by performing a search only over a first range of potential pitch periods. The method further includes determining a second candidate pitch period by dividing the first candidate pitch period by an integer, wherein the second candidate pitch period is outside the first range of potential pitch periods. The method further includes selecting as the estimate of the pitch period of the signal the smaller of the candidate pitch periods that is such that portions of the signal separated by that candidate pitch period are well correlated.

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