Title:
ステレオ信号を符号化する符号化装置、符号化方法、復号器、復号化方法および符号化方法又は復号化方法を実行させるためのコンピュータプログラム
Document Type and Number:
Japanese Patent JP4602375
Kind Code:
B2
Abstract:
A synthesizer for generating a decorrelation signal using an input signal is operative on a plurality of subband signals, wherein a subband signal includes a sequence of at least two subband samples, the sequence of the subband samples representing a bandwidth of the subband signal, which is smaller than a bandwidth of the input signal. The synthesizer includes a filter stage (201) for filtering each subband signal using a reverberation filter to obtain a plurality of reverberated subband signals, wherein a plurality of reverberated subband signals together represent the decorrelation signal. This decorrelation signal is used for reconstructing a signal based on a parametrically encoded stereo signal consisting of a mono signal and a coherence measure.
Inventors:
Jonas Eng Degod
Lars Willemose
Lars Willemose
Application Number:
JP2007092012A
Publication Date:
December 22, 2010
Filing Date:
March 30, 2007
Export Citation:
Assignee:
Dolby International AB
International Classes:
G10L19/008; H03H17/02; G10L19/02
Domestic Patent References:
| JP2002244698A | ||||
| JP11032399A | ||||
| JP1024700A |
Foreign References:
| WO1998046045A1 |
Attorney, Agent or Firm:
Torii Hiroshi