Processing

Please wait...

Settings

Settings

Goto Application

1. WO2020069120 - DISTORTION REDUCING MULTI-BAND COMPRESSOR WITH DYNAMIC THRESHOLDS BASED ON SCENE SWITCH ANALYZER GUIDED DISTORTION AUDIBILITY MODEL

Publication Number WO/2020/069120
Publication Date 02.04.2020
International Application No. PCT/US2019/053142
International Filing Date 26.09.2019
IPC
G10L 21/0364 2013.01
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
0316by changing the amplitude
0364for improving intelligibility
G10L 25/18 2013.01
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
25Speech or voice analysis techniques not restricted to a single one of groups G10L15/-G10L21/129
03characterised by the type of extracted parameters
18the extracted parameters being spectral information of each sub-band
H03G 7/00 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
GCONTROL OF AMPLIFICATION
7Volume compression or expansion in amplifiers
H03G 9/02 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
GCONTROL OF AMPLIFICATION
9Combinations of two or more types of control, e.g. gain control and tone control
02in untuned amplifiers
CPC
G10L 21/0364
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
0316by changing the amplitude
0364for improving intelligibility
G10L 25/18
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
25Speech or voice analysis techniques not restricted to a single one of groups G10L15/00-G10L21/00
03characterised by the type of extracted parameters
18the extracted parameters being spectral information of each sub-band
H03G 7/00
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
GCONTROL OF AMPLIFICATION
7Volume compression or expansion in amplifiers
H03G 9/02
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
GCONTROL OF AMPLIFICATION
9Combinations of two or more types of control, e.g. gain control and tone control
02in untuned amplifiers
Applicants
  • DOLBY LABORATORIES LICENSING CORPORATION [US]/[US]
Inventors
  • MA, Yuanxing
Agents
  • MA, Xin
  • BROWN, Tyrome Y.
  • ANDERSEN, Robert L.
  • BOSE, Subroto
  • KONSTANTINIDES, Konstantinos
  • MACK, Kevin J.
  • TANASE, Iuliana
  • YON, Sanghyok
  • ZHANG, Yiming
  • DOLBY INTERNATIONAL AB
Priority Data
19155298.304.02.2019EP
62/798,14929.01.2019US
PCT/CN2018/10828728.09.2018CN
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DISTORTION REDUCING MULTI-BAND COMPRESSOR WITH DYNAMIC THRESHOLDS BASED ON SCENE SWITCH ANALYZER GUIDED DISTORTION AUDIBILITY MODEL
(FR) COMPRESSEUR MULTIBANDE RÉDUISANT LA DISTORSION AVEC SEUILS DYNAMIQUES BASÉS SUR UN MODÈLE D'AUDIBILITÉ DE DISTORSION GUIDÉE PAR ANALYSEUR DE CHANGEMENT DE SCÈNE
Abstract
(EN)
The present application relates to a method, system, and computer program product of dynamically adjusting thresholds of a compressor responsive to an input audio signal. A scene switch analyzer receives an input audio signal having a plurality of frequency band components. The scene switch analyzer determines whether a scene switch has occurred in the input audio signal. The frequency band components of the input audio signal are processed. In response to determine that scene switch has not occurred, a distortion audibility system applies slow smoothing to compressor thresholds of the frequency band components. In response to determine that scene switch has occurred, the distortion audibility system applies fast smoothing or no smoothing to the compressor thresholds of the frequency band components.
(FR)
La présente invention concerne un procédé, un système et un produit de programme informatique de réglage dynamique de seuils d'un compresseur en réponse à un signal audio d'entrée. Un analyseur de changement de scène reçoit un signal audio d'entrée ayant une pluralité de composantes de bande de fréquence. L'analyseur de changement de scène détermine si un changement de scène s'est produit dans le signal audio d'entrée. Les composantes de bande de fréquence du signal audio d'entrée sont traitées. En réponse à la détermination du fait qu'un changement de scène n'a pas eu lieu, un système d'audibilité de distorsion applique un lissage lent à des seuils de compresseur des composantes de bande de fréquence. En réponse à la détermination du fait qu'un changement de scène s'est produit, le système d'audibilité de distorsion applique un lissage rapide ou aucun lissage aux seuils de compresseur des composantes de bande de fréquence.
Also published as
EP2019783935
Latest bibliographic data on file with the International Bureau