MX387453B - Reducción de solapamiento en dominio de tiempo para bancos de filtros no uniformes que usan análisis espectral seguido por síntesis parcial. - Google Patents

Reducción de solapamiento en dominio de tiempo para bancos de filtros no uniformes que usan análisis espectral seguido por síntesis parcial.

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Publication number
MX387453B
MX387453B MX2019001023A MX2019001023A MX387453B MX 387453 B MX387453 B MX 387453B MX 2019001023 A MX2019001023 A MX 2019001023A MX 2019001023 A MX2019001023 A MX 2019001023A MX 387453 B MX387453 B MX 387453B
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MX
Mexico
Prior art keywords
audio signal
samples
basis
block
subband
Prior art date
Application number
MX2019001023A
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English (en)
Other versions
MX2019001023A (es
Inventor
Bernd Edler
Nils Werner
Original Assignee
Fraunhofer Ges Forschung
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Publication date
Application filed by Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Publication of MX2019001023A publication Critical patent/MX2019001023A/es
Publication of MX387453B publication Critical patent/MX387453B/es

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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
    • G06F17/147—Discrete orthonormal transforms, e.g. discrete cosine transform, discrete sine transform, and variations therefrom, e.g. modified discrete cosine transform, integer transforms approximating the discrete cosine transform
    • 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
    • G10L19/0212—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 orthogonal transformation
    • 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
    • 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
    • G10L19/167—Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mathematical Analysis (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Data Mining & Analysis (AREA)
  • Theoretical Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Algebra (AREA)
  • Databases & Information Systems (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Discrete Mathematics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Las modalidades proporcionan un procesador de audio para procesar una señal de audio para obtener una representación de subbanda de la señal de audio. El procesador de audio comprende una etapa de transformada críticamente muestreada traslapada en cascada y una etapa de reducción de solapamiento en dominio de tiempo. La etapa de transformada críticamente muestreada traslapada en cascada se configura para realizar una transformada críticamente muestreada traslapada en cascada en al menos dos bloques parcialmente traslapados de muestras de la señal de audio, para obtener un conjunto de muestras de subbanda con base en un primer bloque de muestras de la señal de audio, y para obtener un conjunto correspondiente de muestras de subbanda con base en un segundo bloque de muestras de la señal de audio. La etapa de reducción de solapamiento en dominio de tiempo se configura para realizar una combinación ponderada de dos conjuntos correspondientes de muestras de subbanda, uno obtenido con base en primer bloque de muestras de la señal de audio y uno obtenido con base en el segundo bloque de muestras de la señal de audio, para obtener una representación de subbanda de solapamiento reducido de la señal de audio.
MX2019001023A 2016-07-29 2017-07-26 Reducción de solapamiento en dominio de tiempo para bancos de filtros no uniformes que usan análisis espectral seguido por síntesis parcial. MX387453B (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16181883.6A EP3276620A1 (en) 2016-07-29 2016-07-29 Time domain aliasing reduction for non-uniform filterbanks which use spectral analysis followed by partial synthesis
PCT/EP2017/068932 WO2018019909A1 (en) 2016-07-29 2017-07-26 Time domain aliasing reduction for non-uniform filterbanks which use spectral analysis followed by partial synthesis

Publications (2)

Publication Number Publication Date
MX2019001023A MX2019001023A (es) 2019-06-10
MX387453B true MX387453B (es) 2025-03-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
MX2019001023A MX387453B (es) 2016-07-29 2017-07-26 Reducción de solapamiento en dominio de tiempo para bancos de filtros no uniformes que usan análisis espectral seguido por síntesis parcial.

Country Status (10)

Country Link
US (1) US10978082B2 (es)
EP (3) EP3276620A1 (es)
JP (1) JP6768141B2 (es)
KR (1) KR102218371B1 (es)
CN (1) CN109863555B (es)
CA (2) CA3139439C (es)
ES (2) ES2990986T3 (es)
MX (1) MX387453B (es)
RU (1) RU2719285C1 (es)
WO (1) WO2018019909A1 (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3644313A1 (en) 2018-10-26 2020-04-29 Fraunhofer Gesellschaft zur Förderung der Angewand Perceptual audio coding with adaptive non-uniform time/frequency tiling using subband merging and time domain aliasing reduction
CN110535472B (zh) * 2019-07-17 2023-05-02 南开大学深圳研究院 高速逐次逼近式模数转换器及控制方法
EP3786948A1 (en) * 2019-08-28 2021-03-03 Fraunhofer Gesellschaft zur Förderung der Angewand Time-varying time-frequency tilings using non-uniform orthogonal filterbanks based on mdct analysis/synthesis and tdar
CN112767329B (zh) * 2021-01-08 2021-09-10 北京安德医智科技有限公司 图像处理方法及装置、电子设备
CN118101091B (zh) * 2024-04-28 2024-08-02 杭州捷孚电子技术有限公司 自适应信号处理方法及系统

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Also Published As

Publication number Publication date
US20190172471A1 (en) 2019-06-06
WO2018019909A1 (en) 2018-02-01
EP3491643B1 (en) 2020-06-03
EP3491643A1 (en) 2019-06-05
KR102218371B1 (ko) 2021-02-22
ES2990986T3 (es) 2024-12-02
BR112019001741A2 (pt) 2019-05-07
CA3139439A1 (en) 2018-02-01
ES2807564T3 (es) 2021-02-23
CA3031553A1 (en) 2018-02-01
RU2719285C1 (ru) 2020-04-17
MX2019001023A (es) 2019-06-10
CA3031553C (en) 2022-01-04
KR20190034314A (ko) 2019-04-01
JP2019526074A (ja) 2019-09-12
JP6768141B2 (ja) 2020-10-14
EP3664090A1 (en) 2020-06-10
CN109863555A (zh) 2019-06-07
US10978082B2 (en) 2021-04-13
EP3664090C0 (en) 2024-08-28
CN109863555B (zh) 2023-09-08
CA3139439C (en) 2024-03-19
EP3664090B1 (en) 2024-08-28
EP3276620A1 (en) 2018-01-31

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