- Patent Title: Time domain level adjustment for audio signal decoding or encoding
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Application No.: US14795063Application Date: 2015-07-09
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Publication No.: US09830915B2Publication Date: 2017-11-28
- Inventor: Stephan Schreiner , Arne Borsum , Matthias Neusinger , Manuel Jander , Markus Lohwasser , Bernhard Neugebauer
- Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- Applicant Address: DE
- Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- Current Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
- Current Assignee Address: DE
- Agency: Haynes & Boone, LLP
- Priority: EP13151910 20130118
- Main IPC: G10L19/00
- IPC: G10L19/00 ; G10L21/00 ; G10L19/005 ; G10L19/02 ; G10L21/0224 ; G10L21/0232 ; G10L21/0332 ; G10L21/034

Abstract:
An audio signal decoder for providing a decoded audio signal representation on the basis of an encoded audio signal representation has a decoder preprocessing stage for obtaining a plurality of frequency band signals from the encoded audio signal representation, a clipping estimator, a level shifter, a frequency-to-time-domain converter, and a level shift compensator. The clipping estimator analyzes the encoded audio signal representation and/or side information relative to a gain of the frequency band signals in order to determine a current level shift factor. The level shifter shifts levels of the frequency band signals according to the level shift factor. The frequency-to-time-domain converter converts the level shifted frequency band signals into a time-domain representation. The level shift compensator acts on the time-domain representation for at least partly compensating a corresponding level shift and for obtaining a substantially compensated time-domain representation.
Public/Granted literature
- US20160019898A1 TIME DOMAIN LEVEL ADJUSTMENT FOR AUDIO SIGNAL DECODING OR ENCODING Public/Granted day:2016-01-21
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