MX2009003371A - Sistema y metodo para compensar distorsion no lineal sin memoria de un transductor de audio. - Google Patents

Sistema y metodo para compensar distorsion no lineal sin memoria de un transductor de audio.

Info

Publication number
MX2009003371A
MX2009003371A MX2009003371A MX2009003371A MX2009003371A MX 2009003371 A MX2009003371 A MX 2009003371A MX 2009003371 A MX2009003371 A MX 2009003371A MX 2009003371 A MX2009003371 A MX 2009003371A MX 2009003371 A MX2009003371 A MX 2009003371A
Authority
MX
Mexico
Prior art keywords
scale factor
signal amplitude
velocity
amplitude
transducer
Prior art date
Application number
MX2009003371A
Other languages
English (en)
Inventor
Dmitry V Shmunk
Original Assignee
Dts 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 Dts Inc filed Critical Dts Inc
Publication of MX2009003371A publication Critical patent/MX2009003371A/es

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
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • 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
    • 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
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • H04R3/14—Cross-over networks

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • General Health & Medical Sciences (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Amplifiers (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

Se presenta una solución en tiempo real a bajo costo para compensar distorsión no lineal sin memoria en un transductor de audio. El sistema de audio de reproducción estima la amplitud de señal y la velocidad, consulta un factor de escala de una tabla de consulta (LUT) para el par definido (amplitud, velocidad) (o calcula el factor de escala para una aproximación polinominal para LUT), y aplica el factor de escala a la amplitud de señal. El factor de escala es una estimación de la distorsión no lineal sin memoria del transductor en un punto en su plano de fase dado por (amplitud, velocidad), el cual se encuentra al aplicar una señal de prueba que tiene una amplitud de señal y velocidad conocidas al transductor, medir una amplitud de señal registrada y establecer el factor de escala igual a la relación de la amplitud de señal de prueba con la amplitud de señal registrada. La escala puede utilizarse para pre- o post-compensar la señal de audio dependiendo del transductor de audio.
MX2009003371A 2006-10-18 2007-09-25 Sistema y metodo para compensar distorsion no lineal sin memoria de un transductor de audio. MX2009003371A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/583,190 US8300837B2 (en) 2006-10-18 2006-10-18 System and method for compensating memoryless non-linear distortion of an audio transducer
PCT/US2007/020652 WO2008048413A2 (en) 2006-10-18 2007-09-25 System and method for compensating memoryless non-linear distortion of an audio transducer

Publications (1)

Publication Number Publication Date
MX2009003371A true MX2009003371A (es) 2009-08-31

Family

ID=39314580

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2009003371A MX2009003371A (es) 2006-10-18 2007-09-25 Sistema y metodo para compensar distorsion no lineal sin memoria de un transductor de audio.

Country Status (15)

Country Link
US (1) US8300837B2 (es)
EP (1) EP2092787A4 (es)
JP (1) JP5283004B2 (es)
KR (1) KR101444482B1 (es)
CN (1) CN101529926B (es)
AU (1) AU2007313442B2 (es)
BR (1) BRPI0717789A2 (es)
CA (1) CA2665005A1 (es)
HK (1) HK1133145A1 (es)
IL (1) IL197915A (es)
MX (1) MX2009003371A (es)
NZ (1) NZ575872A (es)
RU (1) RU2440692C2 (es)
TW (1) TWI436583B (es)
WO (1) WO2008048413A2 (es)

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JP2010147943A (ja) * 2008-12-19 2010-07-01 Sony Corp 情報処理装置、及び信号伝送方法
ES2385393B1 (es) * 2010-11-02 2013-07-12 Universitat Politècnica De Catalunya Equipo de diagnóstico de altavoces y procedimiento de utilización de éste mediante el uso de transformada wavelet.
US9088841B2 (en) * 2011-01-04 2015-07-21 Stmicroelectronics S.R.L. Signal processor and method for compensating loudspeaker aging phenomena
US8369486B1 (en) * 2011-01-28 2013-02-05 Adtran, Inc. Systems and methods for testing telephony equipment
WO2012161632A1 (en) * 2011-05-20 2012-11-29 Telefonaktiebolaget L M Ericsson (Publ) Dynamic cancellation of passive intermodulation interference
CN102866296A (zh) 2011-07-08 2013-01-09 杜比实验室特许公司 估计非线性失真的方法和系统、调节参数的方法和系统
TWI489882B (zh) * 2011-09-30 2015-06-21 Inventec Corp 可攜式電子裝置之聲音插座測試方法
RU2542637C1 (ru) * 2013-07-24 2015-02-20 Владимир Георгиевич Потёмкин Способ формирования сигнала для управления электроакустическим излучателем
US9565497B2 (en) 2013-08-01 2017-02-07 Caavo Inc. Enhancing audio using a mobile device
US9973633B2 (en) * 2014-11-17 2018-05-15 At&T Intellectual Property I, L.P. Pre-distortion system for cancellation of nonlinear distortion in mobile devices
US10547942B2 (en) 2015-12-28 2020-01-28 Samsung Electronics Co., Ltd. Control of electrodynamic speaker driver using a low-order non-linear model
CN106028235A (zh) * 2016-06-22 2016-10-12 厦门傅里叶电子有限公司 微型扬声器振膜不对称的补偿方法
CN106297772B (zh) * 2016-08-24 2019-06-25 武汉大学 基于扬声器引入的语音信号失真特性的回放攻击检测方法
GB201712391D0 (en) * 2017-08-01 2017-09-13 Turner Michael James Controller for an electromechanical transducer
US10701485B2 (en) * 2018-03-08 2020-06-30 Samsung Electronics Co., Ltd. Energy limiter for loudspeaker protection
US10542361B1 (en) 2018-08-07 2020-01-21 Samsung Electronics Co., Ltd. Nonlinear control of loudspeaker systems with current source amplifier
US11012773B2 (en) 2018-09-04 2021-05-18 Samsung Electronics Co., Ltd. Waveguide for smooth off-axis frequency response
US10797666B2 (en) 2018-09-06 2020-10-06 Samsung Electronics Co., Ltd. Port velocity limiter for vented box loudspeakers
US10887368B2 (en) * 2019-02-25 2021-01-05 International Business Machines Corporation Monitoring quality of a conference call for muted participants thereto
US11356773B2 (en) 2020-10-30 2022-06-07 Samsung Electronics, Co., Ltd. Nonlinear control of a loudspeaker with a neural network
US11622194B2 (en) * 2020-12-29 2023-04-04 Nuvoton Technology Corporation Deep learning speaker compensation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6395800A (ja) * 1986-10-09 1988-04-26 Hiroshi Nakamura オ−デイオスピ−カ−駆動方法
DE4111884A1 (de) 1991-04-09 1992-10-15 Klippel Wolfgang Schaltungsanordnung zur korrektur des linearen und nichtlinearen uebertragungsverhaltens elektroakustischer wandler
US5542001A (en) * 1994-12-06 1996-07-30 Reiffin; Martin Smart amplifier for loudspeaker motional feedback derived from linearization of a nonlinear motion responsive signal
JP3368836B2 (ja) * 1998-07-31 2003-01-20 オンキヨー株式会社 音響信号処理回路および方法
US6311154B1 (en) * 1998-12-30 2001-10-30 Nokia Mobile Phones Limited Adaptive windows for analysis-by-synthesis CELP-type speech coding
KR20050089187A (ko) * 2004-03-04 2005-09-08 엘지전자 주식회사 오디오 기기에서의 스피커 특성 보상장치 및 방법

Also Published As

Publication number Publication date
CN101529926A (zh) 2009-09-09
KR20090085602A (ko) 2009-08-07
RU2009118397A (ru) 2010-11-27
TWI436583B (zh) 2014-05-01
BRPI0717789A2 (pt) 2013-10-29
JP2010507329A (ja) 2010-03-04
WO2008048413A2 (en) 2008-04-24
AU2007313442B2 (en) 2012-04-19
WO2008048413A3 (en) 2008-12-11
CA2665005A1 (en) 2008-04-24
RU2440692C2 (ru) 2012-01-20
IL197915A (en) 2013-08-29
IL197915A0 (en) 2009-12-24
EP2092787A2 (en) 2009-08-26
CN101529926B (zh) 2012-12-26
US8300837B2 (en) 2012-10-30
AU2007313442A1 (en) 2008-04-24
JP5283004B2 (ja) 2013-09-04
HK1133145A1 (en) 2010-03-12
EP2092787A4 (en) 2011-01-26
US20080101619A1 (en) 2008-05-01
NZ575872A (en) 2012-07-27
TW200826480A (en) 2008-06-16
KR101444482B1 (ko) 2014-09-24

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