BR9914889B1 - dispositivo e mÉtodo de ponderaÇço de percepÇço para codificaÇço eficiente de sinais em banda larga - Google Patents

dispositivo e mÉtodo de ponderaÇço de percepÇço para codificaÇço eficiente de sinais em banda larga

Info

Publication number
BR9914889B1
BR9914889B1 BRPI9914889-7B1A BR9914889A BR9914889B1 BR 9914889 B1 BR9914889 B1 BR 9914889B1 BR 9914889 A BR9914889 A BR 9914889A BR 9914889 B1 BR9914889 B1 BR 9914889B1
Authority
BR
Brazil
Prior art keywords
pitch
efficient coding
weighting device
broadband signals
signal
Prior art date
Application number
BRPI9914889-7B1A
Other languages
English (en)
Other versions
BR9914889A (pt
Inventor
Bruno Bessette
Redwan Salami
Roch Lefebvre
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=4162966&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR9914889(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed filed Critical
Publication of BR9914889A publication Critical patent/BR9914889A/pt
Publication of BR9914889B1 publication Critical patent/BR9914889B1/pt

Links

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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/90—Pitch determination of speech signals
    • 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
    • G10L19/26—Pre-filtering or post-filtering
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0011—Long term prediction filters, i.e. pitch estimation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Error Detection And Correction (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Dc Digital Transmission (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Networks Using Active Elements (AREA)
  • Television Systems (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Optical Communication System (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Image Processing (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Package Frames And Binding Bands (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Inorganic Insulating Materials (AREA)
  • Parts Printed On Printed Circuit Boards (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
BRPI9914889-7B1A 1998-10-27 1999-10-27 dispositivo e mÉtodo de ponderaÇço de percepÇço para codificaÇço eficiente de sinais em banda larga BR9914889B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002252170A CA2252170A1 (en) 1998-10-27 1998-10-27 A method and device for high quality coding of wideband speech and audio signals
PCT/CA1999/001010 WO2000025304A1 (en) 1998-10-27 1999-10-27 Perceptual weighting device and method for efficient coding of wideband signals

Publications (2)

Publication Number Publication Date
BR9914889A BR9914889A (pt) 2001-07-17
BR9914889B1 true BR9914889B1 (pt) 2013-07-30

Family

ID=4162966

Family Applications (2)

Application Number Title Priority Date Filing Date
BRPI9914889-7B1A BR9914889B1 (pt) 1998-10-27 1999-10-27 dispositivo e mÉtodo de ponderaÇço de percepÇço para codificaÇço eficiente de sinais em banda larga
BRPI9914890-0B1A BR9914890B1 (pt) 1998-10-27 1999-10-27 mÉtodo e dispositivo para busca adaptativa de pitch de largura de banda na codificaÇço de sinais de banda larga

Family Applications After (1)

Application Number Title Priority Date Filing Date
BRPI9914890-0B1A BR9914890B1 (pt) 1998-10-27 1999-10-27 mÉtodo e dispositivo para busca adaptativa de pitch de largura de banda na codificaÇço de sinais de banda larga

Country Status (20)

Country Link
US (8) US6795805B1 (pt)
EP (4) EP1125276B1 (pt)
JP (4) JP3490685B2 (pt)
KR (3) KR100417634B1 (pt)
CN (4) CN1127055C (pt)
AT (4) ATE246389T1 (pt)
AU (4) AU763471B2 (pt)
BR (2) BR9914889B1 (pt)
CA (5) CA2252170A1 (pt)
DE (4) DE69910058T2 (pt)
DK (4) DK1125276T3 (pt)
ES (4) ES2205891T3 (pt)
HK (1) HK1043234B (pt)
MX (2) MXPA01004181A (pt)
NO (4) NO318627B1 (pt)
NZ (1) NZ511163A (pt)
PT (4) PT1125285E (pt)
RU (2) RU2217718C2 (pt)
WO (4) WO2000025304A1 (pt)
ZA (2) ZA200103366B (pt)

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