FR3096543B1 - Process for protecting a membrane of a loudspeaker - Google Patents

Process for protecting a membrane of a loudspeaker Download PDF

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Publication number
FR3096543B1
FR3096543B1 FR1905443A FR1905443A FR3096543B1 FR 3096543 B1 FR3096543 B1 FR 3096543B1 FR 1905443 A FR1905443 A FR 1905443A FR 1905443 A FR1905443 A FR 1905443A FR 3096543 B1 FR3096543 B1 FR 3096543B1
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FR
France
Prior art keywords
control signal
electrical control
loudspeaker
protecting
membrane
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
FR1905443A
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French (fr)
Other versions
FR3096543A1 (en
Inventor
Laurent Gagliardini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PSA Automobiles SA
Original Assignee
PSA Automobiles SA
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 PSA Automobiles SA filed Critical PSA Automobiles SA
Priority to FR1905443A priority Critical patent/FR3096543B1/en
Publication of FR3096543A1 publication Critical patent/FR3096543A1/en
Application granted granted Critical
Publication of FR3096543B1 publication Critical patent/FR3096543B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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

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

Abstract

Procédé de protection d’une membrane d’un haut-parleur possédant un débattement maximal (Xmax) théorique, comportant les étapes : a) commander un déplacement de la membrane du haut-parleur par un signal électrique de commande (s(t)), non amplifié ; b) estimer le débattement () de la membrane du haut-parleur à partir du signal électrique de commande (s(t)) ; c) appliquer un filtre correcteur (3) au signal électrique de commande (s(t)) lorsque le débattement estimé () est supérieur au débattement maximal (Xmax) théorique, le filtre correcteur (3) étant configuré pour atténuer les basses fréquences du signal électrique de commande (s(t)) ; d) transmettre le signal électrique de commande corrigé () lors de l’étape c) à un amplificateur (A). Figure pour l’Abrégé :  Figure 1Method for protecting a diaphragm of a loudspeaker having a theoretical maximum deflection (Xmax), comprising the steps: a) controlling a displacement of the loudspeaker diaphragm by an electrical control signal (s(t)) , unamplified; b) estimate the deflection () of the loudspeaker membrane from the electrical control signal (s(t)); c) applying a corrector filter (3) to the electrical control signal (s(t)) when the estimated travel () is greater than the theoretical maximum travel (Xmax), the corrector filter (3) being configured to attenuate the low frequencies of the electrical control signal (s(t)); d) transmitting the corrected electrical control signal () in step c) to an amplifier (A). Figure for the Abstract: Figure 1

FR1905443A 2019-05-23 2019-05-23 Process for protecting a membrane of a loudspeaker Expired - Fee Related FR3096543B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1905443A FR3096543B1 (en) 2019-05-23 2019-05-23 Process for protecting a membrane of a loudspeaker

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1905443 2019-05-23
FR1905443A FR3096543B1 (en) 2019-05-23 2019-05-23 Process for protecting a membrane of a loudspeaker

Publications (2)

Publication Number Publication Date
FR3096543A1 FR3096543A1 (en) 2020-11-27
FR3096543B1 true FR3096543B1 (en) 2022-04-29

Family

ID=68072660

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1905443A Expired - Fee Related FR3096543B1 (en) 2019-05-23 2019-05-23 Process for protecting a membrane of a loudspeaker

Country Status (1)

Country Link
FR (1) FR3096543B1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9813812B2 (en) * 2014-12-12 2017-11-07 Analog Devices Global Method of controlling diaphragm excursion of electrodynamic loudspeakers
US10462565B2 (en) * 2017-01-04 2019-10-29 Samsung Electronics Co., Ltd. Displacement limiter for loudspeaker mechanical protection

Also Published As

Publication number Publication date
FR3096543A1 (en) 2020-11-27

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