BR112017015371A2 - ?dispositivo de controle de um alto-falante? - Google Patents

?dispositivo de controle de um alto-falante?

Info

Publication number
BR112017015371A2
BR112017015371A2 BR112017015371-8A BR112017015371A BR112017015371A2 BR 112017015371 A2 BR112017015371 A2 BR 112017015371A2 BR 112017015371 A BR112017015371 A BR 112017015371A BR 112017015371 A2 BR112017015371 A2 BR 112017015371A2
Authority
BR
Brazil
Prior art keywords
speaker
predicted current
control device
function
audio signal
Prior art date
Application number
BR112017015371-8A
Other languages
English (en)
Other versions
BR112017015371B1 (pt
Inventor
Mendes Eduardo
Lepoutre Frédéric
Emmanuel Calmel Pierre-
Original Assignee
Devialet
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 Devialet filed Critical Devialet
Publication of BR112017015371A2 publication Critical patent/BR112017015371A2/pt
Publication of BR112017015371B1 publication Critical patent/BR112017015371B1/pt

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/004—Control by varying the supply voltage
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/007—Volume compression or expansion in amplifiers of digital or coded signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/06—Frequency selective two-port networks including resistors
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

trata-se de um dispositivo de controle de um alto-falante (14) em um compartimento que inclui: uma entrada para um sinal de áudio a ser reproduzido; uma saída de fornecimento de um sinal de excitação do alto-falante; meios (26, 36, 38, 70, 71, 80, 90) para calcular, a cada instante (t), pelo menos uma corrente prevista (iref(t)) para o sinal de excitação do alto-falante (14) em função do sinal de áudio. o dispositivo inclui um atenuador (71) próprio para limitar a corrente prevista a um valor de corrente limitada inferior a um valor de limite máximo por aplicação, à corrente prevista, de um ganho de atenuação que é função da corrente prevista.
BR112017015371-8A 2015-01-19 2016-01-19 Dispositivo de controle de um alto-falante BR112017015371B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1550413 2015-01-19
FR1550413A FR3031854B1 (fr) 2015-01-19 2015-01-19 Dispositif de commande d'un haut-parleur avec limitation de courant
PCT/EP2016/050995 WO2016116435A1 (fr) 2015-01-19 2016-01-19 Dispositif de commande d'un haut-parleur avec limitation de courant

Publications (2)

Publication Number Publication Date
BR112017015371A2 true BR112017015371A2 (pt) 2018-01-16
BR112017015371B1 BR112017015371B1 (pt) 2022-12-06

Family

ID=53200079

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112017015371-8A BR112017015371B1 (pt) 2015-01-19 2016-01-19 Dispositivo de controle de um alto-falante

Country Status (9)

Country Link
US (1) US10448155B2 (pt)
EP (1) EP3248285B1 (pt)
JP (2) JP2018507608A (pt)
KR (1) KR102484096B1 (pt)
CN (1) CN107431466B (pt)
BR (1) BR112017015371B1 (pt)
CA (1) CA2974131C (pt)
FR (1) FR3031854B1 (pt)
WO (1) WO2016116435A1 (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102476306B1 (ko) * 2018-03-06 2022-12-13 삼성전자주식회사 스피커의 온도를 감지하기 위한 전자 장치 및 그의 동작 방법
CN109218956B (zh) * 2018-09-10 2021-02-26 上海傅硅电子科技有限公司 扬声器外壳表面温度的测量方法、计算机
WO2020137299A1 (ja) * 2018-12-26 2020-07-02 ソニー株式会社 スピーカー装置及び信号処理回路
US10667040B1 (en) 2019-05-03 2020-05-26 Harman International Industries, Incorporated System and method for compensating for non-linear behavior for an acoustic transducer based on magnetic flux
US10602288B1 (en) * 2019-05-03 2020-03-24 Harman International Industries, Incorporated System and method for compensating for non-linear behavior for an acoustic transducer

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4903163A (en) * 1989-05-09 1990-02-20 The United States Of America As Represented By The Secretary Of The Interior Directional harmonic overcurrent relay device
JP2701663B2 (ja) * 1992-07-09 1998-01-21 三菱電機株式会社 リミッタ装置
US6940981B2 (en) * 2003-03-12 2005-09-06 Qsc Audio Products, Inc. Apparatus and method of limiting power applied to a loudspeaker
US8259953B2 (en) * 2008-04-10 2012-09-04 Bang & Olufsen Icepower A/S Thermal protection of electro dynamic transducers used in loudspeaker systems
JP2009253955A (ja) * 2008-04-11 2009-10-29 Pioneer Electronic Corp 音声増幅装置
US8712065B2 (en) * 2008-04-29 2014-04-29 Bang & Olufsen Icepower A/S Transducer displacement protection
JP2011097321A (ja) * 2009-10-29 2011-05-12 Sharp Corp オーディオ装置
EP3076545B1 (en) * 2010-02-10 2020-12-16 Goodix Technology (HK) Company Limited System and method for adapting a loudspeaker signal
US8194869B2 (en) * 2010-03-17 2012-06-05 Harman International Industries, Incorporated Audio power management system
EP2469708B1 (en) * 2010-12-21 2013-11-27 Harman Becker Automotive Systems GmbH Amplifier current consumption control
EP2538555B1 (en) * 2011-06-22 2019-09-11 Nxp B.V. Control of a loudspeaker output
GB2493382A (en) * 2011-08-03 2013-02-06 Blackstar Amplification Ltd A signal processor for providing a transistor amplifier with the frequency response of a valve amplifier and loudspeaker
US9553554B2 (en) * 2012-06-04 2017-01-24 Mitsubishi Electric Corporation Signal processing device
US10219090B2 (en) * 2013-02-27 2019-02-26 Analog Devices Global Method and detector of loudspeaker diaphragm excursion

Also Published As

Publication number Publication date
FR3031854A1 (fr) 2016-07-22
JP7199499B2 (ja) 2023-01-05
CA2974131C (fr) 2023-08-01
JP2022036118A (ja) 2022-03-04
KR102484096B1 (ko) 2023-01-02
CN107431466B (zh) 2022-05-03
EP3248285B1 (fr) 2022-11-30
JP2018507608A (ja) 2018-03-15
KR20170140155A (ko) 2017-12-20
WO2016116435A1 (fr) 2016-07-28
EP3248285A1 (fr) 2017-11-29
US20170366899A1 (en) 2017-12-21
CN107431466A (zh) 2017-12-01
FR3031854B1 (fr) 2017-02-17
CA2974131A1 (fr) 2016-07-28
BR112017015371B1 (pt) 2022-12-06
US10448155B2 (en) 2019-10-15

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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 19/01/2016, OBSERVADAS AS CONDICOES LEGAIS