Title:
符号化されたオーディオ信号を復号するためのデコーダおよびオーディオ信号を符号化するためのエンコーダ
Document Type and Number:
Japanese Patent JP6728209
Kind Code:
B2
Abstract:
A schematic block diagram of a decoder 2 for decoding an encoded audio signal 4 is shown. The decoder comprises an adaptive spectrum-time converter 6 and an overlap-add-processor 8. The adaptive spectrum-time converter converts successive blocks of spectral values 4' into successive blocks of time values 10, e.g. via a frequency-to-time transform. Furthermore, the adaptive spectrum-time converter 6 receives a control information 12 and switches, in response to the control information 12, between transform kernels of a first group of transform kernels comprising one or more transform kernels having different symmetries at sides of a kernel, and a second group of transform kernels comprising one or more transform kernels having the same symmetries at sides of a transform kernel. Moreover, the overlap-add-processor 8 overlaps and adds the successive blocks of time values 10 to obtain decoded audio values 14, which may be a decoded audio signal.
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Inventors:
Helmrich Christian
Edler Bernd
Edler Bernd
Application Number:
JP2017548011A
Publication Date:
July 22, 2020
Filing Date:
March 08, 2016
Export Citation:
Assignee:
Fraunhofer-Gesellschaftsza Felderung der Angewanten Vorschung A. Fao
International Classes:
G10L19/022; G10L19/008; G10L19/18
Domestic Patent References:
| JP5506345A | ||||
| JP2013528822A |
Attorney, Agent or Firm:
Masahiro Okada
Ichi Ogiya
Ichi Ogiya