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1. WO2018136166 - CODING OF MULTIPLE AUDIO SIGNALS

Publication Number WO/2018/136166
Publication Date 26.07.2018
International Application No. PCT/US2017/065542
International Filing Date 11.12.2017
IPC
G10L 19/008 2013.01
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
008Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
CPC
G10L 19/008
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signals 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
008Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
H04R 5/02
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
5Stereophonic arrangements
02Spatial or constructional arrangements of loudspeakers
H04S 2400/15
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
SSTEREOPHONIC SYSTEMS 
2400Details of stereophonic systems covered by H04S but not provided for in its groups
15Aspects of sound capture and related signal processing for recording or reproduction
H04S 2420/03
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
SSTEREOPHONIC SYSTEMS 
2420Techniques used stereophonic systems covered by H04S but not provided for in its groups
03Application of parametric coding in stereophonic audio systems
H04S 3/008
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
SSTEREOPHONIC SYSTEMS 
3Systems employing more than two channels, e.g. quadraphonic
008in which the audio signals are in digital form, i.e. employing more than two discrete digital channels
Applicants
  • QUALCOMM INCORPORATED [US]/[US]
Inventors
  • ATTI, Venkatraman
  • CHEBIYYAM, Venkata Subrahmanyam Chandra Sekhar
Agents
  • TOLER, Jeffrey G.
Priority Data
15/836,60408.12.2017US
62/448,28719.01.2017US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CODING OF MULTIPLE AUDIO SIGNALS
(FR) CODAGE DE SIGNAUX AUDIO MULTIPLES
Abstract
(EN)
A residual scaling unit is configured to determine a scaling factor for a residual channel based on an inter-channel mismatch value. The inter-channel mismatch value is indicative of a temporal alignment between a reference channel and a target channel. The residual scaling unit is further configured to scale (e.g., attenuate) the residual channel by the scaling factor to generate a scaled residual channel. A residual channel encoder is configured to encode the scaled residual channel as part of a bitstream.
(FR)
L'invention porte sur une unité de mise à l'échelle résiduelle configurée pour déterminer un facteur de mise à l'échelle pour un canal résiduel sur la base d'une valeur de non-correspondance inter-canaux. La valeur de non-correspondance inter-canaux est indicative d'un alignement temporel entre un canal de référence et un canal cible. L'unité de mise à l'échelle résiduelle est en outre configurée pour mettre à l'échelle (par exemple : atténuer) le canal résiduel par le facteur de mise à l'échelle pour générer un canal résiduel mis à l'échelle. Un codeur de canal résiduel est configuré pour coder le canal résiduel mis à l'échelle comme faisant partie d'un flux binaire.
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