ECSP11011358A - Decodificador de audio y método de decodificación usando combinación de reducción de canales de audio (downmixing) eficiente - Google Patents

Decodificador de audio y método de decodificación usando combinación de reducción de canales de audio (downmixing) eficiente

Info

Publication number
ECSP11011358A
ECSP11011358A EC2011011358A ECSP11011358A ECSP11011358A EC SP11011358 A ECSP11011358 A EC SP11011358A EC 2011011358 A EC2011011358 A EC 2011011358A EC SP11011358 A ECSP11011358 A EC SP11011358A EC SP11011358 A ECSP11011358 A EC SP11011358A
Authority
EC
Ecuador
Prior art keywords
information
audio
channel reduction
audio channel
mantissa
Prior art date
Application number
EC2011011358A
Other languages
English (en)
Inventor
Robin Thesing
James M Silva
Robert L Adersen
Original Assignee
Dolby Lab Licensing Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=43877072&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ECSP11011358(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dolby Lab Licensing Corp filed Critical Dolby Lab Licensing Corp
Publication of ECSP11011358A publication Critical patent/ECSP11011358A/es

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech 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
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech 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
    • G10L19/02—Speech 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 using spectral analysis, e.g. transform vocoders or subband vocoders
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech 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
    • G10L19/02—Speech 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 using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech 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
    • G10L19/04—Speech 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 using predictive techniques
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech 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
    • G10L19/04—Speech 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 using predictive techniques
    • G10L19/16—Vocoder architecture
    • G10L19/167—Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech 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
    • G10L19/04—Speech 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 using predictive techniques
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/02—Spatial or constructional arrangements of loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Human Computer Interaction (AREA)
  • Health & Medical Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereophonic System (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

Un método, un aparato, un medio de almacenamiento legible por computadora configurado con instrucciones para llevar a cabo un método, y lógica codificada en uno o más medios tangibles legibles por computadora, para llevar a cabo acciones. El método debe decodificar información de audio que incluye canales N.n en canales de audio decodificados M.m, lo que incluye el desempaque de metadatos y el desempaque y la decodificación de información de exponente de dominio de frecuencia y mantisa; la determinación de coeficientes de transformación a partir de la información desempacada y decodificada de exponente de dominio de frecuencia y mantisa; la transformación inversa de la información de dominio de frecuencia; y en el caso M es más pequeño que N, la combinación de reducción de canales de audio de acuerdo con la información de combinación de reducción de canales de audio, donde la combinación de reducción de canales de audio se lleva a cabo de manera eficiente.
EC2011011358A 2010-02-18 2011-09-29 Decodificador de audio y método de decodificación usando combinación de reducción de canales de audio (downmixing) eficiente ECSP11011358A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US30587110P 2010-02-18 2010-02-18
US35976310P 2010-06-29 2010-06-29

Publications (1)

Publication Number Publication Date
ECSP11011358A true ECSP11011358A (es) 2012-01-31

Family

ID=43877072

Family Applications (1)

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EC2011011358A ECSP11011358A (es) 2010-02-18 2011-09-29 Decodificador de audio y método de decodificación usando combinación de reducción de canales de audio (downmixing) eficiente

Country Status (35)

Country Link
US (3) US8214223B2 (es)
EP (2) EP2698789B1 (es)
JP (2) JP5501449B2 (es)
KR (2) KR101327194B1 (es)
CN (2) CN102428514B (es)
AP (1) AP3147A (es)
AR (2) AR080183A1 (es)
AU (1) AU2011218351B2 (es)
BR (1) BRPI1105248B1 (es)
CA (3) CA2757643C (es)
CO (1) CO6501169A2 (es)
DK (1) DK2360683T3 (es)
EA (1) EA025020B1 (es)
EC (1) ECSP11011358A (es)
ES (1) ES2467290T3 (es)
GE (1) GEP20146086B (es)
GT (1) GT201100246A (es)
HN (1) HN2011002584A (es)
HR (1) HRP20140506T1 (es)
IL (3) IL215254A (es)
MA (1) MA33270B1 (es)
ME (1) ME01880B (es)
MX (1) MX2011010285A (es)
MY (1) MY157229A (es)
NI (1) NI201100175A (es)
NZ (1) NZ595739A (es)
PE (1) PE20121261A1 (es)
PL (1) PL2360683T3 (es)
PT (1) PT2360683E (es)
RS (1) RS53336B (es)
SG (1) SG174552A1 (es)
SI (1) SI2360683T1 (es)
TW (2) TWI557723B (es)
WO (1) WO2011102967A1 (es)
ZA (1) ZA201106950B (es)

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