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AR097473A2 - Método de codificación y codificador para generar datos de salida por ampliación de ancho de banda - Google Patents

Método de codificación y codificador para generar datos de salida por ampliación de ancho de banda

Info

Publication number
AR097473A2
AR097473A2 ARP140103215A ARP140103215A AR097473A2 AR 097473 A2 AR097473 A2 AR 097473A2 AR P140103215 A ARP140103215 A AR P140103215A AR P140103215 A ARP140103215 A AR P140103215A AR 097473 A2 AR097473 A2 AR 097473A2
Authority
AR
Argentina
Prior art keywords
output data
coding
data
frequency band
audio signal
Prior art date
Application number
ARP140103215A
Other languages
English (en)
Original Assignee
Fraunhofer Ges Forschung
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 Forschung filed Critical Fraunhofer Ges Forschung
Publication of AR097473A2 publication Critical patent/AR097473A2/es

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)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Control Of Amplification And Gain Control (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)

Abstract

Un método y un codificador para generar datos de salida del ancho de banda para una señal de audio que comprende un medidor del piso de ruido (110), un caracterizador de energía de la señal (120) y un procesador (130). La señal de audio comprende componentes en una primera banda de frecuencia (105a) y componentes en una segunda banda de frecuencia, los datos de salida del ancho de banda están adaptados para controlar una síntesis de los componentes en la segunda banda de frecuencia. El medidor del piso de ruido (110) mide los datos del piso de ruido data (115) de la segunda banda de frecuencia para una porción de tiempo de la señal de audio. El caracterizador de energía de la señal (120) deriva los datos de distribución de energía (125), los datos de distribución de energía (125) caracterizan una distribución de energía en un espectro de la porción de tiempo de la señal de audio. El procesador (130) combina los datos del piso de ruido y los datos de distribución de energía (125) para obtener los datos de salida del ancho de banda.
ARP140103215A 2008-07-11 2014-08-27 Método de codificación y codificador para generar datos de salida por ampliación de ancho de banda AR097473A2 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7984108P 2008-07-11 2008-07-11

Publications (1)

Publication Number Publication Date
AR097473A2 true AR097473A2 (es) 2016-03-16

Family

ID=40902067

Family Applications (3)

Application Number Title Priority Date Filing Date
ARP090102548A AR072552A1 (es) 2008-07-11 2009-07-07 Un aparato y un metodo para calcular una cantidad de envolventes espectrales
ARP090102546A AR072480A1 (es) 2008-07-11 2009-07-07 Un aparato y un metodo para generar datos de salida por ampliacion de ancho de banda
ARP140103215A AR097473A2 (es) 2008-07-11 2014-08-27 Método de codificación y codificador para generar datos de salida por ampliación de ancho de banda

Family Applications Before (2)

Application Number Title Priority Date Filing Date
ARP090102548A AR072552A1 (es) 2008-07-11 2009-07-07 Un aparato y un metodo para calcular una cantidad de envolventes espectrales
ARP090102546A AR072480A1 (es) 2008-07-11 2009-07-07 Un aparato y un metodo para generar datos de salida por ampliacion de ancho de banda

Country Status (19)

Country Link
US (2) US8296159B2 (es)
EP (2) EP2301027B1 (es)
JP (2) JP5551694B2 (es)
KR (5) KR101278546B1 (es)
CN (2) CN102144259B (es)
AR (3) AR072552A1 (es)
AU (2) AU2009267532B2 (es)
BR (2) BRPI0910523B1 (es)
CA (2) CA2730200C (es)
CO (2) CO6341676A2 (es)
ES (2) ES2398627T3 (es)
IL (2) IL210196A (es)
MX (2) MX2011000367A (es)
MY (2) MY155538A (es)
PL (2) PL2301027T3 (es)
RU (2) RU2487428C2 (es)
TW (2) TWI415114B (es)
WO (2) WO2010003546A2 (es)
ZA (2) ZA201009207B (es)

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