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MX2011007563A - Transposicion armonica mejorada de producto cruzado. - Google Patents

Transposicion armonica mejorada de producto cruzado.

Info

Publication number
MX2011007563A
MX2011007563A MX2011007563A MX2011007563A MX2011007563A MX 2011007563 A MX2011007563 A MX 2011007563A MX 2011007563 A MX2011007563 A MX 2011007563A MX 2011007563 A MX2011007563 A MX 2011007563A MX 2011007563 A MX2011007563 A MX 2011007563A
Authority
MX
Mexico
Prior art keywords
signal
frequency component
synthesis
harmonic transposition
high frequency
Prior art date
Application number
MX2011007563A
Other languages
English (en)
Inventor
Lars Villemoes
Per Hedelin
Original Assignee
Dolby Int Ab
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 Dolby Int Ab filed Critical Dolby Int Ab
Publication of MX2011007563A publication Critical patent/MX2011007563A/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
    • 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
    • G10L19/26—Pre-filtering or post-filtering
    • G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding
    • 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
    • G10L21/0388—Details of processing therefor
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereophonic System (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Fats And Perfumes (AREA)
  • Auxiliary Devices For Music (AREA)

Abstract

La presente invención es concerniente con sistemas de codificación de audio que hacen uso de un método de transposición armónica para reconstrucción de alta frecuencia (HFR). Se describe un sistema y método para generar un componente de alta frecuencia de una señal a partir de un componente de baja frecuencia de la señal. El sistema comprende un banco de filtros de análisis que proveen una pluralidad de señales de sub-banda de análisis del componente de baja frecuencia de la señal. También comprende una unidad de procesamiento no lineal para generar una señal de sub-banda de síntesis con una frecuencia de síntesis al modificar la fase de una primera y una segunda de la pluralidad de señales de sub-banda de análisis y al combinar las señales de sub-banda de análisis modificadas en fase. Finalmente comprende un banco de filtros de síntesis para generar el componente de alta frecuencia de la señal a partir de la señal de sub-banda de síntesis.
MX2011007563A 2009-01-16 2010-01-15 Transposicion armonica mejorada de producto cruzado. MX2011007563A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14522309P 2009-01-16 2009-01-16
PCT/EP2010/050483 WO2010081892A2 (en) 2009-01-16 2010-01-15 Cross product enhanced harmonic transposition

Publications (1)

Publication Number Publication Date
MX2011007563A true MX2011007563A (es) 2011-09-06

Family

ID=42077387

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2011007563A MX2011007563A (es) 2009-01-16 2010-01-15 Transposicion armonica mejorada de producto cruzado.

Country Status (21)

Country Link
US (10) US8818541B2 (es)
EP (11) EP3992966B1 (es)
JP (2) JP5237465B2 (es)
KR (2) KR101256808B1 (es)
CN (2) CN102282612B (es)
AU (1) AU2010205583B2 (es)
BR (3) BR122019023684B1 (es)
CA (8) CA3244147A1 (es)
CL (1) CL2011001717A1 (es)
ES (10) ES3023486T3 (es)
HU (3) HUE072314T2 (es)
MX (1) MX2011007563A (es)
MY (7) MY208222A (es)
PL (9) PL4517749T3 (es)
RU (5) RU2495505C2 (es)
SG (1) SG172976A1 (es)
TR (1) TR201910073T4 (es)
TW (2) TWI523005B (es)
UA (1) UA99878C2 (es)
WO (1) WO2010081892A2 (es)
ZA (1) ZA201105923B (es)

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