BRPI0910517A2 - um aparelho e um método para calcular um número de envelopes espectrais - Google Patents

um aparelho e um método para calcular um número de envelopes espectrais

Info

Publication number
BRPI0910517A2
BRPI0910517A2 BRPI0910517A BRPI0910517A BRPI0910517A2 BR PI0910517 A2 BRPI0910517 A2 BR PI0910517A2 BR PI0910517 A BRPI0910517 A BR PI0910517A BR PI0910517 A BRPI0910517 A BR PI0910517A BR PI0910517 A2 BRPI0910517 A2 BR PI0910517A2
Authority
BR
Brazil
Prior art keywords
calculating
spectral envelopes
envelopes
spectral
Prior art date
Application number
BRPI0910517A
Other languages
English (en)
Inventor
Bernhard Grill
Frederik Nagel
Harald Popp
Manuel Jander
Marc Gayer
Markus Lohwasser
Markus Multrus
Max Neuendorf
Nikolaus Rettelbach
Ulrich Kraemer
Virgilio Bacigalupo
Original Assignee
Fraunhofer Ges Zur Förderung Der Angewandten Forschug E V
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 Fraunhofer Ges Zur Förderung Der Angewandten Forschug E V filed Critical Fraunhofer Ges Zur Förderung Der Angewandten Forschug E V
Publication of BRPI0910517A2 publication Critical patent/BRPI0910517A2/pt
Publication of BRPI0910517B1 publication Critical patent/BRPI0910517B1/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
    • 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
    • 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
    • G10L19/0204—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 using subband decomposition
    • G10L19/0208—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
    • G10L19/025—Detection of transients or attacks for time/frequency resolution switching
    • 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
    • G10L19/20—Vocoders using multiple modes using sound class specific coding, hybrid encoders or object based coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
BRPI0910517-4A 2008-07-11 2009-06-23 Um aparelho e um método para calcular um número de envelopes espectrais a serem obtidos por um codificador de replicação de banda espectral (sbr) BRPI0910517B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US7984108P 2008-07-11 2008-07-11
US61/079,841 2008-07-11
PCT/EP2009/004523 WO2010003546A2 (en) 2008-07-11 2009-06-23 An apparatus and a method for calculating a number of spectral envelopes

Publications (2)

Publication Number Publication Date
BRPI0910517A2 true BRPI0910517A2 (pt) 2016-07-26
BRPI0910517B1 BRPI0910517B1 (pt) 2022-08-23

Family

ID=40902067

Family Applications (2)

Application Number Title Priority Date Filing Date
BRPI0910523-9A BRPI0910523B1 (pt) 2008-07-11 2009-06-23 Aparelho e método para gerar dados de saída de extensão de largura de banda
BRPI0910517-4A BRPI0910517B1 (pt) 2008-07-11 2009-06-23 Um aparelho e um método para calcular um número de envelopes espectrais a serem obtidos por um codificador de replicação de banda espectral (sbr)

Family Applications Before (1)

Application Number Title Priority Date Filing Date
BRPI0910523-9A BRPI0910523B1 (pt) 2008-07-11 2009-06-23 Aparelho e método para gerar dados de saída de extensão de largura de banda

Country Status (19)

Country Link
US (2) US8612214B2 (pt)
EP (2) EP2301028B1 (pt)
JP (2) JP5551694B2 (pt)
KR (5) KR101395252B1 (pt)
CN (2) CN102144259B (pt)
AR (3) AR072480A1 (pt)
AU (2) AU2009267530A1 (pt)
BR (2) BRPI0910523B1 (pt)
CA (2) CA2730200C (pt)
CO (2) CO6341676A2 (pt)
ES (2) ES2398627T3 (pt)
IL (2) IL210196A (pt)
MX (2) MX2011000367A (pt)
MY (2) MY153594A (pt)
PL (2) PL2301027T3 (pt)
RU (2) RU2487428C2 (pt)
TW (2) TWI415114B (pt)
WO (2) WO2010003544A1 (pt)
ZA (2) ZA201009207B (pt)

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