BRPI1008520A2 - método de extensão de largura de banda e aparelho para um codificador de transformada discreta de cosseno modificada - Google Patents

método de extensão de largura de banda e aparelho para um codificador de transformada discreta de cosseno modificada

Info

Publication number
BRPI1008520A2
BRPI1008520A2 BRPI1008520A BRPI1008520A BRPI1008520A2 BR PI1008520 A2 BRPI1008520 A2 BR PI1008520A2 BR PI1008520 A BRPI1008520 A BR PI1008520A BR PI1008520 A BRPI1008520 A BR PI1008520A BR PI1008520 A2 BRPI1008520 A2 BR PI1008520A2
Authority
BR
Brazil
Prior art keywords
bandwidth extension
extension method
discrete transform
transform encoder
modified cosine
Prior art date
Application number
BRPI1008520A
Other languages
English (en)
Inventor
Mark A Jasiuk
Tenkasi V Ramabadran
Original Assignee
Motorola Mobility Inc
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
Application filed by Motorola Mobility Inc filed Critical Motorola Mobility Inc
Publication of BRPI1008520A2 publication Critical patent/BRPI1008520A2/pt
Publication of BRPI1008520B1 publication Critical patent/BRPI1008520B1/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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
    • 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
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Telephone Function (AREA)
BRPI1008520A 2009-02-04 2010-02-02 método e dispositivo de extensão de largura de banda BRPI1008520B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/365,457 US8463599B2 (en) 2009-02-04 2009-02-04 Bandwidth extension method and apparatus for a modified discrete cosine transform audio coder
PCT/US2010/022879 WO2010091013A1 (en) 2009-02-04 2010-02-02 Bandwidth extension method and apparatus for a modified discrete cosine transform audio coder

Publications (2)

Publication Number Publication Date
BRPI1008520A2 true BRPI1008520A2 (pt) 2016-03-08
BRPI1008520B1 BRPI1008520B1 (pt) 2020-05-05

Family

ID=42101566

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI1008520A BRPI1008520B1 (pt) 2009-02-04 2010-02-02 método e dispositivo de extensão de largura de banda

Country Status (8)

Country Link
US (1) US8463599B2 (pt)
EP (1) EP2394269B1 (pt)
JP (2) JP5597896B2 (pt)
KR (1) KR101341246B1 (pt)
CN (1) CN102308333B (pt)
BR (1) BRPI1008520B1 (pt)
MX (1) MX2011007807A (pt)
WO (1) WO2010091013A1 (pt)

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Also Published As

Publication number Publication date
CN102308333A (zh) 2012-01-04
EP2394269B1 (en) 2017-04-05
BRPI1008520B1 (pt) 2020-05-05
JP2012514763A (ja) 2012-06-28
CN102308333B (zh) 2014-03-19
KR101341246B1 (ko) 2013-12-12
US20100198587A1 (en) 2010-08-05
MX2011007807A (es) 2011-09-21
JP2014016622A (ja) 2014-01-30
WO2010091013A1 (en) 2010-08-12
US8463599B2 (en) 2013-06-11
JP5597896B2 (ja) 2014-10-01
EP2394269A1 (en) 2011-12-14
KR20110111463A (ko) 2011-10-11

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