Title:
【発明の名称】可聴信号のコーディングおよびデコーディング方法
Document Type and Number:
Japanese Patent JP3171598
Kind Code:
B2
Abstract:
A method of encoding time-discrete audio signals comprises the steps of weighting the time-discrete audio signal by means of window functions overlapping each other so as to form blocks, the window functions producing blocks of a first length for signals varying weakly with time and blocks of a second length for signals varying strongly with time. A start window sequence is selected for the transition from windowing with blocks of the first length to windowing with blocks of the second length, whereas a stop window sequence is selected for the opposite transition. The start window sequence is selected from at least two different start window sequences having different lengths, whereas the stop window sequence is selected from at least two different stop window sequences having different lengths. A method of decoding blocks of encoded audio signals selects a suitable inverse transformation as well as a suitable synthesis window as a reaction to side information associated with each block.
Inventors:
Martin, Dietz
Gover, Uve
Kunz, olifer
Brandenburg, Carl Heinz
Boshi, Marina
Davidson, Grant
Charles Robinson
Gover, Uve
Kunz, olifer
Brandenburg, Carl Heinz
Boshi, Marina
Davidson, Grant
Charles Robinson
Application Number:
JP52877397A
Publication Date:
May 28, 2001
Filing Date:
November 21, 1996
Export Citation:
Assignee:
Frauoffel-Geselschaft Cru Felderung del Angewandten Forschung A.V.
Dolby Laboratories Inc.
Dolby Laboratories Inc.
International Classes:
G10L19/02; H04B1/66; (IPC1-7): G10L19/00
Domestic Patent References:
| JP6268608A | ||||
| JP895599A | ||||
| JP675590A | ||||
| JP56129000A |
Attorney, Agent or Firm:
Ichiro Sugawara
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