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UA99878C2 - Гармоническое преобразование, усовершенствованное перекрестным произведением - Google Patents

Гармоническое преобразование, усовершенствованное перекрестным произведением

Info

Publication number
UA99878C2
UA99878C2 UAA201109990A UAA201109990A UA99878C2 UA 99878 C2 UA99878 C2 UA 99878C2 UA A201109990 A UAA201109990 A UA A201109990A UA A201109990 A UAA201109990 A UA A201109990A UA 99878 C2 UA99878 C2 UA 99878C2
Authority
UA
Ukraine
Prior art keywords
signal
frequency component
synthesis
harmonic transposition
high frequency
Prior art date
Application number
UAA201109990A
Other languages
English (en)
Ukrainian (uk)
Inventor
Ларс Виллемоэс
Пер ХЕДЕЛИН
Original Assignee
Долби Интернешнл Аб
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 Долби Интернешнл Аб filed Critical Долби Интернешнл Аб
Publication of UA99878C2 publication Critical patent/UA99878C2/ru

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)
  • Carbon And Carbon Compounds (AREA)
  • Fats And Perfumes (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Auxiliary Devices For Music (AREA)

Abstract

Это изобретение относится к системам звукового кодирования, в которых используют способ гармонического преобразования для высокочастотной реконструкции (HFR). Описанная система и способ генерирования высокочастотной составляющей сигнала из низкочастотной составляющей сигнала. Система включает блок анализирующих фильтров, образующий набор сигналов анализируемых поддиапазонов низкочастотной составляющей сигнала. Она также включает блок нелинейной обработки, предназначенный для генерирования сигнала поддиапазона, который синтезируется, с частотой, которая синтезируется, путем модификации фазы первого и второго сигналов анализируемых поддиапазонов из набора сигналов анализируемых поддиапазонов и комбинирования сигналов ана�
UAA201109990A 2009-01-16 2010-01-15 Гармоническое преобразование, усовершенствованное перекрестным произведением UA99878C2 (ru)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14522309P 2009-01-16 2009-01-16

Publications (1)

Publication Number Publication Date
UA99878C2 true UA99878C2 (ru) 2012-10-10

Family

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Family Applications (1)

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UAA201109990A UA99878C2 (ru) 2009-01-16 2010-01-15 Гармоническое преобразование, усовершенствованное перекрестным произведением

Country Status (21)

Country Link
US (10) US8818541B2 (ru)
EP (11) EP4517749B1 (ru)
JP (2) JP5237465B2 (ru)
KR (2) KR101256808B1 (ru)
CN (2) CN102282612B (ru)
AU (1) AU2010205583B2 (ru)
BR (3) BR122019023684B1 (ru)
CA (8) CA3084938C (ru)
CL (1) CL2011001717A1 (ru)
ES (10) ES3023486T3 (ru)
HU (3) HUE072698T2 (ru)
MX (1) MX2011007563A (ru)
MY (7) MY205240A (ru)
PL (9) PL3598445T3 (ru)
RU (5) RU2495505C2 (ru)
SG (1) SG172976A1 (ru)
TR (1) TR201910073T4 (ru)
TW (2) TWI523005B (ru)
UA (1) UA99878C2 (ru)
WO (1) WO2010081892A2 (ru)
ZA (1) ZA201105923B (ru)

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