Patent · US Active

Apparatus and method for handling transient sound events in audio signals when changing the replay speed or pitch

US9240196B2 · kind B2 · utility

2Cited by

7References

18Claims

0Family size

Assignee

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

Inventors

Sascha Disch · Bad Mergentheim, DE
Frederik Nagel · Nuremberg, DE
Stephan Wilde · Wendelstein, DE

Key dates

Filing date	Sep 6, 2012
Grant date	Jan 19, 2016
Priority date	—
Expiry date	Aug 8, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG10L19/025
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

An apparatus for processing an audio signal has an overlap-add stage for overlapping and adding blocks of a corresponding one of a plurality of subband signals using an overlap-add-advance value being different from a block extraction advance value. The apparatus further has a transient detector for detecting a transient in the audio signal or a subband signal of the plurality of subband signals. The overlap-add stage is configured for reducing an influence of a detected transient or for not using the detected transients when adding. The apparatus further has a transient adder for adding a detected transient to a subband signal generated by the overlap/add stage. A related method for processing an audio signal has, inter alia, either reducing an influence or discarding a detected transient when overlapping and adding.

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