MX2009004477A - Aparato y metodo para generar valores de sub-banda de audio y aparato y metodo para generar muestras de audio con dominio de tiempo. - Google Patents

Aparato y metodo para generar valores de sub-banda de audio y aparato y metodo para generar muestras de audio con dominio de tiempo.

Info

Publication number
MX2009004477A
MX2009004477A MX2009004477A MX2009004477A MX2009004477A MX 2009004477 A MX2009004477 A MX 2009004477A MX 2009004477 A MX2009004477 A MX 2009004477A MX 2009004477 A MX2009004477 A MX 2009004477A MX 2009004477 A MX2009004477 A MX 2009004477A
Authority
MX
Mexico
Prior art keywords
generating
samples
time
group
domain
Prior art date
Application number
MX2009004477A
Other languages
English (en)
Inventor
Markus Schnell
Manfred Lutzky
Markus Lohwasser
Markus Schmidt
Marc Gayer
Michael Mellar
Bernd Edler
Markus Multrus
Gerald Schuller
Ralf Geiger
Bernhard Grill
Original Assignee
Ten Forschung Ev Fraunhofer
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 Ten Forschung Ev Fraunhofer filed Critical Ten Forschung Ev Fraunhofer
Publication of MX2009004477A publication Critical patent/MX2009004477A/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
    • G10L19/02—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
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/45—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of analysis window
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0248—Filters characterised by a particular frequency response or filtering method
    • H03H17/0264—Filter sets with mutual related characteristics
    • H03H17/0266—Filter banks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Liquid Crystal Substances (AREA)
  • Tires In General (AREA)
  • External Artificial Organs (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Materials For Photolithography (AREA)
  • Peptides Or Proteins (AREA)

Abstract

Una realización de un aparato (100) para generar valores de sub-banda de audio en canales de sub-banda de audio comprende un generador de ventanas (windower) de análisis (110) para poner en ventana un marco (120) de muestras de entrada de audio del dominio de tiempo que se encuentran en una secuencia de tiempo que se extiende desde una muestra inicial hasta una muestra posterior usando una función de ventana de análisis (190) que comprende una secuencia de coeficientes de ventana para obtener muestras ordenadas en ventanas. La función de la ventana de análisis (190) comprende un primer grupo (200) de coeficientes de ventana y un segundo grupo (210) de coeficientes de ventana. El primer grupo (200) de coeficientes de ventana se usa para visualizar en ventanas muestras posteriores de dominio de tiempo y el segundo grupo (210) de coeficientes de ventana se usa para visualizar en ventanas muestras iniciales de dominio de tiempo. El aparato (100) además comprende una calculadora (170) para calcular los valores de sub-banda de audio usando las muestras ordenadas en ventanas.
MX2009004477A 2006-10-25 2007-10-23 Aparato y metodo para generar valores de sub-banda de audio y aparato y metodo para generar muestras de audio con dominio de tiempo. MX2009004477A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US86295406P 2006-10-25 2006-10-25
PCT/EP2007/009199 WO2008049589A1 (en) 2006-10-25 2007-10-23 Apparatus and method for generating audio subband values and apparatus and method for generating time-domain audio samples

Publications (1)

Publication Number Publication Date
MX2009004477A true MX2009004477A (es) 2009-05-13

Family

ID=39048961

Family Applications (2)

Application Number Title Priority Date Filing Date
MX2008011898A MX2008011898A (es) 2006-10-25 2007-10-23 Aparato y metodo para generar valores de sub-banda de audio y aparato y metodo para generar muestras de audio en dominio de tiempo.
MX2009004477A MX2009004477A (es) 2006-10-25 2007-10-23 Aparato y metodo para generar valores de sub-banda de audio y aparato y metodo para generar muestras de audio con dominio de tiempo.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
MX2008011898A MX2008011898A (es) 2006-10-25 2007-10-23 Aparato y metodo para generar valores de sub-banda de audio y aparato y metodo para generar muestras de audio en dominio de tiempo.

Country Status (26)

Country Link
US (3) US8452605B2 (es)
EP (10) EP4300825A3 (es)
JP (2) JP5083779B2 (es)
KR (2) KR100957711B1 (es)
CN (2) CN101606194B (es)
AR (2) AR063394A1 (es)
AT (1) ATE435480T1 (es)
AU (2) AU2007308415B2 (es)
BR (2) BRPI0709310B1 (es)
CA (2) CA2667505C (es)
DE (1) DE602007001460D1 (es)
DK (2) DK3848928T3 (es)
ES (6) ES2631906T3 (es)
FI (1) FI3848928T3 (es)
HK (2) HK1119824A1 (es)
HU (1) HUE064482T2 (es)
IL (2) IL193786A (es)
MX (2) MX2008011898A (es)
MY (2) MY142520A (es)
NO (3) NO341567B1 (es)
PL (6) PL3288027T3 (es)
PT (5) PT1994530E (es)
RU (2) RU2411645C2 (es)
TW (2) TWI355649B (es)
WO (2) WO2008049590A1 (es)
ZA (2) ZA200810308B (es)

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