Patent · US Active

Apparatus and method for performing a correlation between a test sound signal replayable at variable speed and a reference sound signal

US8326112B2 · kind B2 · utility

1Cited by

6References

8Claims

0Family size

Assignee

Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

Thomas Sporer · Ergolding, DE
Michael Beckinger · Erfurt, DE

Key dates

Filing date	Jun 9, 2006
Grant date	Dec 4, 2012
Priority date	—
Expiry date	Jan 22, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG11B27/10
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An apparatus for performing a correlation between a test sound signal replayable at variable speed and a reference sound signal, which is a digitally stored version of the test sound signal, has a determinator for determining a measure for the replay speed of a test sound signal; a variator for varying a test sound signal sampling rate, to generate a modified test sound signal depending on the measure for the replay speed, or for varying a reference sound signal sampling rate, to generate a modified reference sound signal depending on the measure for the replay speed, the variator being formed to vary the test or reference sampling rate so that a deviation between a test or modified test sound signal replay speed and a reference or modified reference sound signal replay speed is reduced; and a comparator for comparing the test or modified test sound signal and the reference or modified reference sound signal to obtain a correlation result.

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