Processing

Please wait...

PATENTSCOPE will be unavailable a few hours for maintenance reason on Saturday 31.10.2020 at 7:00 AM CET
Settings

Settings

Goto Application

1. WO2007148925 - METHOD AND APPARATUS FOR ADAPTIVELY ENCODING AND DECODING HIGH FREQUENCY BAND

Publication Number WO/2007/148925
Publication Date 27.12.2007
International Application No. PCT/KR2007/003007
International Filing Date 21.06.2007
IPC
G10L 19/00 2006.01
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
CPC
G10L 21/038
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
21Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
02Speech enhancement, e.g. noise reduction or echo cancellation
038using band spreading techniques
Applicants
  • SAMSUNG ELECTRONICS CO., LTD. [KR]/[KR] (AllExceptUS)
  • SON, Chang-Yong [KR]/[KR] (UsOnly)
  • OH, Eun-Mi [KR]/[KR] (UsOnly)
  • CHOO, Ki-Hyun [KR]/[KR] (UsOnly)
  • KIM, Jung-Hoe [KR]/[KR] (UsOnly)
Inventors
  • SON, Chang-Yong
  • OH, Eun-Mi
  • CHOO, Ki-Hyun
  • KIM, Jung-Hoe
Agents
  • Y.P.LEE, MOCK & PARTNERS
Priority Data
10-2006-005607021.06.2006KR
10-2007-006068820.06.2007KR
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR ADAPTIVELY ENCODING AND DECODING HIGH FREQUENCY BAND
(FR) PROCÉDÉ ET APPAREIL POUR LE CODAGE ET DÉCODAGE DE MANIÈRE ADAPTATIVE DE BANDES HAUTES FRÉQUENCES
Abstract
(EN)
Provided are a method and apparatus for encoding and decoding an audio signal. According to the present application, a signal of a high frequency band above a preset frequency band is adaptively encoded or decoded in the time domain or in the frequency domain by using a signal of a low frequency band below the preset frequency band. As such, the sound quality of a high frequency signal is not deteriorate even when an audio signal is encoded or decoded by using a small number of bits and thus coding efficiency may be maximized.
(FR)
La présente invention concerne un procédé et un appareil pour le codage et le décodage d'un signal audio. Selon la présente application, un signal d'une bande haute fréquence au-dessus d'une bande de fréquence préréglée est codé ou décodé de manière adaptative dans le domaine de temps ou dans le domaine de fréquence en utilisant un signal de bande basse fréquence en dessous de la bande de fréquence préréglée. En tant que telle, la qualité de son d'un signal haute fréquence n'est pas détériorée même si un signal audio est codé ou décodé en utilisant un petit nombre de bits et ainsi l'efficacité de codage peut être maximisée.
Also published as
Latest bibliographic data on file with the International Bureau