BR112022002100A2 - Bancos de filtros não lineares adaptáveis para extensão de faixa de frequência psicoacústica - Google Patents

Bancos de filtros não lineares adaptáveis para extensão de faixa de frequência psicoacústica

Info

Publication number
BR112022002100A2
BR112022002100A2 BR112022002100A BR112022002100A BR112022002100A2 BR 112022002100 A2 BR112022002100 A2 BR 112022002100A2 BR 112022002100 A BR112022002100 A BR 112022002100A BR 112022002100 A BR112022002100 A BR 112022002100A BR 112022002100 A2 BR112022002100 A2 BR 112022002100A2
Authority
BR
Brazil
Prior art keywords
components
quadrature
spectral
circuit
frequency range
Prior art date
Application number
BR112022002100A
Other languages
English (en)
Inventor
Anthony Mariglio Joseph Iii
Original Assignee
Boomcloud 360 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 Boomcloud 360 Inc filed Critical Boomcloud 360 Inc
Publication of BR112022002100A2 publication Critical patent/BR112022002100A2/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/007—Protection circuits for transducers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/16—Sound input; Sound output
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/02—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos
    • G10H1/06—Circuits for establishing the harmonic content of tones, or other arrangements for changing the tone colour
    • G10H1/08—Circuits for establishing the harmonic content of tones, or other arrangements for changing the tone colour by combining tones
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/02—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos
    • G10H1/06—Circuits for establishing the harmonic content of tones, or other arrangements for changing the tone colour
    • G10H1/12—Circuits for establishing the harmonic content of tones, or other arrangements for changing the tone colour by filtering complex waveforms
    • G10H1/125—Circuits for establishing the harmonic content of tones, or other arrangements for changing the tone colour by filtering complex waveforms using a digital filter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2210/00—Aspects or methods of musical processing having intrinsic musical character, i.e. involving musical theory or musical parameters or relying on musical knowledge, as applied in electrophonic musical tools or instruments
    • G10H2210/155—Musical effects
    • G10H2210/321—Missing fundamental, i.e. creating the psychoacoustic impression of a missing fundamental tone through synthesis of higher harmonics, e.g. to play bass notes pitched below the frequency range of reproducing speakers
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2250/00—Aspects of algorithms or signal processing methods without intrinsic musical character, yet specifically adapted for or used in electrophonic musical processing
    • G10H2250/055—Filters for musical processing or musical effects; Filter responses, filter architecture, filter coefficients or control parameters therefor
    • G10H2250/061—Allpass filters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00—Signal processing covered by H04R, not provided for in its groups
    • H04R2430/03—Synergistic effects of band splitting and sub-band processing

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Human Computer Interaction (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

bancos de filtros não lineares adaptáveis para extensão de faixa de frequência psicoacústica. um sistema inclui um circuito que fornece extensão de faixa de frequência psicoacústica para um alto-falante. o circuito gera componentes de quadratura a partir de um canal de áudio e gera componentes de quadratura espectral girados aplicando uma transformação direta que gira um espectro dos componentes de quadratura a partir de uma base padrão para uma base rotativa. na base rotativa, o circuito isola os componentes dos componentes de quadratura espectral girados em frequências alvo e gera componentes de quadratura espectral harmônica coerentes de fase ponderada aplicando uma não linearidade independente de escala aos componentes isolados. o circuito gera um componente espectral harmônico aplicando uma transformação inversa que gira um espectro dos componentes de quadratura espectral harmônica coerente de fase ponderada da base rotativa para a base padrão. o circuito combina o componente espectral harmônico com frequências do canal de áudio fora das frequências alvo para gerar um canal de saída e fornece o canal de saída ao alto-falante.
BR112022002100A 2019-08-08 2020-08-06 Bancos de filtros não lineares adaptáveis para extensão de faixa de frequência psicoacústica BR112022002100A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201962884607P 2019-08-08 2019-08-08
PCT/US2020/045137 WO2021026314A1 (en) 2019-08-08 2020-08-06 Nonlinear adaptive filterbanks for psychoacoustic frequency range extension

Publications (1)

Publication Number Publication Date
BR112022002100A2 true BR112022002100A2 (pt) 2022-04-12

Family

ID=74498116

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112022002100A BR112022002100A2 (pt) 2019-08-08 2020-08-06 Bancos de filtros não lineares adaptáveis para extensão de faixa de frequência psicoacústica

Country Status (8)

Country Link
US (1) US11006216B2 (pt)
EP (1) EP3991169A4 (pt)
JP (1) JP7270836B2 (pt)
KR (1) KR102578008B1 (pt)
CN (1) CN114467313B (pt)
BR (1) BR112022002100A2 (pt)
TW (1) TWI740599B (pt)
WO (1) WO2021026314A1 (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11838732B2 (en) * 2021-07-15 2023-12-05 Boomcloud 360 Inc. Adaptive filterbanks using scale-dependent nonlinearity for psychoacoustic frequency range extension

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EP1206043B1 (en) * 2000-11-08 2009-12-23 Sony Deutschland GmbH Noise reduction in a stereo receiver
WO2010028297A1 (en) * 2008-09-06 2010-03-11 GH Innovation, Inc. Selective bandwidth extension
CN102197662B (zh) * 2009-05-18 2014-04-23 哈曼国际工业有限公司 效率优化的音频系统
TWI484481B (zh) 2009-05-27 2015-05-11 杜比國際公司 從訊號的低頻成份產生該訊號之高頻成份的系統與方法，及其機上盒、電腦程式產品、軟體程式及儲存媒體
US8971551B2 (en) * 2009-09-18 2015-03-03 Dolby International Ab Virtual bass synthesis using harmonic transposition
RU2596033C2 (ru) 2010-03-09 2016-08-27 Фраунхофер-Гезелльшафт цур Фёрдерунг дер ангевандтен Форшунг Е.Ф. Устройство и способ получения улучшенной частотной характеристики и временного фазирования способом расширения полосы аудио сигналов в фазовом вокодере
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EP2685448B1 (en) * 2012-07-12 2018-09-05 Harman Becker Automotive Systems GmbH Engine sound synthesis
JP5894347B2 (ja) * 2012-10-15 2016-03-30 ドルビー・インターナショナル・アーベー 転移器に基づく仮想ベース・システムにおけるレイテンシーを低減するシステムおよび方法
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US9502044B2 (en) * 2013-05-29 2016-11-22 Qualcomm Incorporated Compression of decomposed representations of a sound field
US9830918B2 (en) * 2013-07-05 2017-11-28 Dolby International Ab Enhanced soundfield coding using parametric component generation
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Also Published As

Publication number Publication date
TW202111691A (zh) 2021-03-16
JP7270836B2 (ja) 2023-05-10
EP3991169A4 (en) 2023-07-12
US20210044898A1 (en) 2021-02-11
CN114467313B (zh) 2023-04-14
EP3991169A1 (en) 2022-05-04
WO2021026314A1 (en) 2021-02-11
US11006216B2 (en) 2021-05-11
KR20220044566A (ko) 2022-04-08
KR102578008B1 (ko) 2023-09-12
CN114467313A (zh) 2022-05-10
JP2022543849A (ja) 2022-10-14
TWI740599B (zh) 2021-09-21

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