Title:
APPARATUS, METHOD AND COMPUTER PROGRAMM FOR AVOIDING CLIPPING ARTEFACTS
Document Type and Number:
WIPO Patent Application WO/2013/087861
Kind Code:
A3
Abstract:
An audio encoding apparatus comprises an encoder for encoding a time segment of an input audio signal to be encoded to obtain a corresponding encoded signal segment. The audio encoding apparatus further comprises a decoder for decoding the encoded signal segment to obtain a re-decoded signal segment. A clipping detector is provided for analyzing the re-decoded signal segment with respect to at least one of an actual signal clipping or an perceptible signal clipping and for generating a corresponding clipping alert. The encoder is further configured to again encode the time segment of the audio signal with at least one modified encoding parameter resulting in a reduced clipping probability in response to the clipping alert.
Inventors:
HEUBERGER ALBERT (DE)
EDLER BERND (DE)
RETTELBACH NIKOLAUS (DE)
GEYERSBERGER STEFAN (DE)
HILPERT JOHANNES (DE)
EDLER BERND (DE)
RETTELBACH NIKOLAUS (DE)
GEYERSBERGER STEFAN (DE)
HILPERT JOHANNES (DE)
Application Number:
PCT/EP2012/075591
Publication Date:
August 29, 2013
Filing Date:
December 14, 2012
Export Citation:
Assignee:
FRAUNHOFER GES FORSCHUNG (DE)
International Classes:
G10L19/032; G10L25/69
Foreign References:
| US20100266142A1 | 2010-10-21 | |||
| EP2161720A1 | 2010-03-10 | |||
| EP2093758A2 | 2009-08-26 | |||
| US20070239295A1 | 2007-10-11 |
Attorney, Agent or Firm:
ZINKLER, Franz et al. (Pullach, DE)
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