Title:
The audio decoder which has the bandwidth enhancement module provided with the energy adjustment module
Document Type and Number:
Japanese Patent JP6228298
Kind Code:
B2
Abstract:
An audio decoder configured to produce an audio signal from a bitstream containing audio frames includes: a core band decoding module configured to derive a directly decoded core band audio signal from the bitstream; a bandwidth extension module configured to derive a parametrically decoded bandwidth extension audio signal from the core band audio signal and from the bitstream, wherein the bandwidth extension audio signal is based on a frequency domain signal having at least one frequency band; and a combiner configured to combine the core band audio signal and the bandwidth extension audio signal so as to produce the audio signal; wherein the bandwidth extension module includes an energy adjusting module being configured in such way that in a current audio frame in which an audio frame loss occurs, an adjusted signal energy for the current audio frame for the at least one frequency band is set.
Inventors:
Jeremy Reconte
Fabian Bower
Ralph Sperschneider
Artur Trithard
Fabian Bower
Ralph Sperschneider
Artur Trithard
Application Number:
JP2016520479A
Publication Date:
November 08, 2017
Filing Date:
June 18, 2014
Export Citation:
Assignee:
Fraunhofer-Gesellschaft Tool Felderung del Angewanten Forsung Eingetler Genel Fehlein
International Classes:
G10L19/005; G10L21/0388
Foreign References:
| WO2007000988A1 | ||||
| WO2010127617A1 |
Attorney, Agent or Firm:
Daisuke Noguchi
Shigeo Noguchi
Shigeo Noguchi