BR112015019040A2 - sistemas e métodos de realizar filtragem para determinação de ganho - Google Patents

sistemas e métodos de realizar filtragem para determinação de ganho

Info

Publication number
BR112015019040A2
BR112015019040A2 BR112015019040A BR112015019040A BR112015019040A2 BR 112015019040 A2 BR112015019040 A2 BR 112015019040A2 BR 112015019040 A BR112015019040 A BR 112015019040A BR 112015019040 A BR112015019040 A BR 112015019040A BR 112015019040 A2 BR112015019040 A2 BR 112015019040A2
Authority
BR
Brazil
Prior art keywords
band portion
methods
audio signal
high band
filtering
Prior art date
Application number
BR112015019040A
Other languages
English (en)
Other versions
BR112015019040B1 (pt
Inventor
Pierre Villette Stephane
Krishnan Venkatesh
Srinivasa Atti Venkatraman
Rajendran Vivek
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of BR112015019040A2 publication Critical patent/BR112015019040A2/pt
Publication of BR112015019040B1 publication Critical patent/BR112015019040B1/pt

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
    • 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
    • G10L19/03—Spectral prediction for preventing pre-echo; Temporary noise shaping [TNS], e.g. in MPEG2 or MPEG4
    • 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
    • G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered 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
    • G10L19/04—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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • G10L19/07—Line spectrum pair [LSP] 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
    • 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
    • G10L21/0208—Noise filtering
    • 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
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

1/1 resumo sistemas e métodos de realizar filtragem para determinação de ganho um método específico inclui determinar, com base na informação espectral correspondendo a um sinal de áudio que inclui uma porção de banda baixa e uma porção de banda alta, se o sinal de áudio inclui um componente correspondendo a uma condição de geração de artefatos. o método inclui também filtrar a porção de banda alta do sinal de áudio e gerar um sinal codificado. gerar o sinal codificado inclui determinar informação de ganho com base em uma proporção de uma primeira energia correspondendo à saída de banda alta filtrada em relação a uma segunda energia correspondendo à porção de banda baixa para reduzir um efeito audível da condição de geração de artefatos.
BR112015019040-5A 2013-02-08 2013-08-06 Sistemas e métodos de realizar filtragem para determinação de ganho BR112015019040B1 (pt)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US201361762807P 2013-02-08 2013-02-08
US61/762,807 2013-02-08
US13/959,188 2013-08-05
US13/959,188 US9711156B2 (en) 2013-02-08 2013-08-05 Systems and methods of performing filtering for gain determination
PCT/US2013/053806 WO2014123579A1 (en) 2013-02-08 2013-08-06 Systems and methods of performing filtering for gain determination

Publications (2)

Publication Number Publication Date
BR112015019040A2 true BR112015019040A2 (pt) 2017-07-18
BR112015019040B1 BR112015019040B1 (pt) 2021-12-07

Family

ID=51298066

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112015019040-5A BR112015019040B1 (pt) 2013-02-08 2013-08-06 Sistemas e métodos de realizar filtragem para determinação de ganho

Country Status (23)

Country Link
US (1) US9711156B2 (pt)
EP (1) EP2954523B1 (pt)
JP (1) JP6456847B2 (pt)
KR (1) KR101891872B1 (pt)
CN (1) CN104969291B (pt)
AU (1) AU2013377885B2 (pt)
BR (1) BR112015019040B1 (pt)
CA (1) CA2896814C (pt)
DK (1) DK2954523T3 (pt)
ES (1) ES2715847T3 (pt)
HK (1) HK1211377A1 (pt)
HU (1) HUE042387T2 (pt)
IL (1) IL239719A (pt)
MY (1) MY171188A (pt)
PH (1) PH12015501516B1 (pt)
PL (1) PL2954523T3 (pt)
PT (1) PT2954523T (pt)
RU (1) RU2643628C2 (pt)
SG (1) SG11201505067TA (pt)
SI (1) SI2954523T1 (pt)
UA (1) UA116371C2 (pt)
WO (1) WO2014123579A1 (pt)
ZA (1) ZA201506577B (pt)

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US11321047B2 (en) 2020-06-11 2022-05-03 Sorenson Ip Holdings, Llc Volume adjustments

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Also Published As

Publication number Publication date
CA2896814A1 (en) 2014-08-14
RU2643628C2 (ru) 2018-02-02
WO2014123579A1 (en) 2014-08-14
ES2715847T3 (es) 2019-06-06
DK2954523T3 (en) 2019-03-25
CN104969291A (zh) 2015-10-07
JP2016511436A (ja) 2016-04-14
IL239719A0 (en) 2015-08-31
EP2954523A1 (en) 2015-12-16
BR112015019040B1 (pt) 2021-12-07
UA116371C2 (uk) 2018-03-12
KR101891872B1 (ko) 2018-08-24
PH12015501516A1 (en) 2015-09-21
HK1211377A1 (en) 2016-05-20
PL2954523T3 (pl) 2019-05-31
KR20150116881A (ko) 2015-10-16
SG11201505067TA (en) 2015-08-28
RU2015138109A (ru) 2017-03-16
PT2954523T (pt) 2019-03-25
PH12015501516B1 (en) 2015-09-21
AU2013377885B2 (en) 2019-07-18
EP2954523B1 (en) 2018-12-19
CA2896814C (en) 2018-08-14
IL239719A (en) 2016-11-30
MY171188A (en) 2019-09-30
AU2013377885A1 (en) 2015-07-23
CN104969291B (zh) 2018-10-26
US9711156B2 (en) 2017-07-18
US20140229171A1 (en) 2014-08-14
JP6456847B2 (ja) 2019-01-23
ZA201506577B (en) 2018-08-29
SI2954523T1 (sl) 2019-04-30
HUE042387T2 (hu) 2019-06-28

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Legal Events

Date Code Title Description
B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B06U Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 06/08/2013, OBSERVADAS AS CONDICOES LEGAIS.