BR112017001631A2 - aparelho e método para processamento de um sinal de áudio utilizando um pós-filtro harmônico - Google Patents

aparelho e método para processamento de um sinal de áudio utilizando um pós-filtro harmônico

Info

Publication number
BR112017001631A2
BR112017001631A2 BR112017001631A BR112017001631A BR112017001631A2 BR 112017001631 A2 BR112017001631 A2 BR 112017001631A2 BR 112017001631 A BR112017001631 A BR 112017001631A BR 112017001631 A BR112017001631 A BR 112017001631A BR 112017001631 A2 BR112017001631 A2 BR 112017001631A2
Authority
BR
Brazil
Prior art keywords
audio signal
post filter
processing
information
domain
Prior art date
Application number
BR112017001631A
Other languages
English (en)
Other versions
BR112017001631B1 (pt
Inventor
Martin Dietz
Sascha Disch
Christian Helmrich
Manuel Jander
Goran Markovic
Matthias Neusinger
Emmanuel Ravelli
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 BR112017001631A2 publication Critical patent/BR112017001631A2/pt
Publication of BR112017001631B1 publication Critical patent/BR112017001631B1/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
    • G10L19/04—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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L21/00—Vacuum gauges
    • G01L21/02—Vacuum gauges having a compression chamber in which gas, whose pressure is to be measured, is compressed
    • 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
    • G10L19/02—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
    • 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

Landscapes

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

Abstract

um aparelho para processamento de um sinal de áudio, tendo associado a ele uma informação de defasagem de tom e uma informação de ganho, compreende um conversor de domínio (100) para conversão de uma primeira representação de domínio do sinal de áudio em uma segunda representação de domínio do sinal de áudio e um pós-filtro harmônico (104) para filtragem da segunda representação de domínio do sinal de áudio, caracterizado pelo pós-filtro se basear em uma função de transferência, compreendendo um numerador e um denominador, em que o numerador compreende um valor de ganho indicado pela informação de ganho e em que o denominador compreende uma parte do número inteiro de um defasagem de tom indicado pela informação de defasagem de tom e um filtro de derivações múltiplas, dependendo de uma parte fracionária do defasagem de tom.
BR112017001631-1A 2014-07-28 2015-07-24 Aparelho e método para processamento de um sinal de áudio utilizando um pós-filtro harmônico BR112017001631B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP14178820.8A EP2980799A1 (en) 2014-07-28 2014-07-28 Apparatus and method for processing an audio signal using a harmonic post-filter
EP14178820.8 2014-07-28
PCT/EP2015/066998 WO2016016121A1 (en) 2014-07-28 2015-07-24 Apparatus and method for processing an audio signal using a harmonic post-filter

Publications (2)

Publication Number Publication Date
BR112017001631A2 true BR112017001631A2 (pt) 2017-11-21
BR112017001631B1 BR112017001631B1 (pt) 2023-07-11

Family

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Also Published As

Publication number Publication date
JP2023072014A (ja) 2023-05-23
ES2676584T3 (es) 2018-07-23
CN106663444A (zh) 2017-05-10
MX2017001242A (es) 2017-07-07
JP6877488B2 (ja) 2021-05-26
JP2019194716A (ja) 2019-11-07
CN112420061A (zh) 2021-02-26
MY179023A (en) 2020-10-26
EP2980799A1 (en) 2016-02-03
PT3175454T (pt) 2018-10-08
KR20170035987A (ko) 2017-03-31
EP3175454B1 (en) 2018-06-20
TW201618086A (zh) 2016-05-16
US10242688B2 (en) 2019-03-26
JP2021064009A (ja) 2021-04-22
JP6546264B2 (ja) 2019-07-17
MX360555B (es) 2018-11-07
EP3175454A1 (en) 2017-06-07
US20190198034A1 (en) 2019-06-27
WO2016016121A1 (en) 2016-02-04
AR101340A1 (es) 2016-12-14
US20230282223A1 (en) 2023-09-07
US11694704B2 (en) 2023-07-04
CA2955255C (en) 2019-04-30
TWI590238B (zh) 2017-07-01
US11037580B2 (en) 2021-06-15
SG11201700696UA (en) 2017-02-27
US20170140769A1 (en) 2017-05-18
KR101959211B1 (ko) 2019-03-18
JP7340553B2 (ja) 2023-09-07
AU2015295603B2 (en) 2018-02-08
RU2665259C1 (ru) 2018-08-28
PL3175454T3 (pl) 2018-11-30
US20210125624A1 (en) 2021-04-29
AU2015295603A1 (en) 2017-03-16
CA2955255A1 (en) 2016-02-04
CN106663444B (zh) 2020-12-01
JP2017522604A (ja) 2017-08-10

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Legal Events

Date Code Title Description
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 24/07/2015, OBSERVADAS AS CONDICOES LEGAIS