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FR3087075B1 - Dispositif de compensation des differences de perception des frequences d'un signal audio en fonction du niveau sonore de restitution du signal - Google Patents

Dispositif de compensation des differences de perception des frequences d'un signal audio en fonction du niveau sonore de restitution du signal Download PDF

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Publication number
FR3087075B1
FR3087075B1 FR1859283A FR1859283A FR3087075B1 FR 3087075 B1 FR3087075 B1 FR 3087075B1 FR 1859283 A FR1859283 A FR 1859283A FR 1859283 A FR1859283 A FR 1859283A FR 3087075 B1 FR3087075 B1 FR 3087075B1
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France
Prior art keywords
audio signal
signal
frequencies
function
restitution
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Active
Application number
FR1859283A
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English (en)
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FR3087075A1 (fr
Inventor
Co Thuy Vu Hoang
Baptiste Vericel
Pierre Beurton
Eduardo Mendes
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Devialet SA
Original Assignee
Devialet SA
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Publication date
Application filed by Devialet SA filed Critical Devialet SA
Priority to FR1859283A priority Critical patent/FR3087075B1/fr
Publication of FR3087075A1 publication Critical patent/FR3087075A1/fr
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Publication of FR3087075B1 publication Critical patent/FR3087075B1/fr
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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
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control
    • H03G5/165—Equalizers; Volume or gain control in limited frequency bands
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
    • H03G9/025—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems
    • 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
    • H04R2430/01—Aspects of volume control, not necessarily automatic, in sound systems

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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)
  • Stereophonic System (AREA)

Abstract

La présente invention concerne un dispositif de compensation comprenant : - une unité de duplication (34) d'un signal audio (Saudio) pour obtenir deux signaux audio identiques, - une première voie (36) de traitement du premier signal audio pour obtenir un signal audio compensé (Scompensé), la première voie (36) comprenant trois filtres (PN1, PN2, PN3) propres chacun à appliquer un gain variable sur une bande prédéterminée de fréquences du premier signal audio, et - une deuxième voie (38) de traitement du deuxième signal audio comprenant : • une unité (42) de détermination de l'amplitude de l'enveloppe sonore du deuxième signal audio, et • une unité (44) de calcul et de modification du gain variable de chaque filtre (PN1, PN2, PN3) en fonction de l'amplitude déterminée et des caractéristiques du filtre.
FR1859283A 2018-10-08 2018-10-08 Dispositif de compensation des differences de perception des frequences d'un signal audio en fonction du niveau sonore de restitution du signal Active FR3087075B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1859283A FR3087075B1 (fr) 2018-10-08 2018-10-08 Dispositif de compensation des differences de perception des frequences d'un signal audio en fonction du niveau sonore de restitution du signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1859283A FR3087075B1 (fr) 2018-10-08 2018-10-08 Dispositif de compensation des differences de perception des frequences d'un signal audio en fonction du niveau sonore de restitution du signal

Publications (2)

Publication Number Publication Date
FR3087075A1 FR3087075A1 (fr) 2020-04-10
FR3087075B1 true FR3087075B1 (fr) 2022-02-25

Family

ID=65244168

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1859283A Active FR3087075B1 (fr) 2018-10-08 2018-10-08 Dispositif de compensation des differences de perception des frequences d'un signal audio en fonction du niveau sonore de restitution du signal

Country Status (1)

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FR (1) FR3087075B1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8194889B2 (en) * 2007-01-03 2012-06-05 Dolby Laboratories Licensing Corporation Hybrid digital/analog loudness-compensating volume control
FR3018025B1 (fr) 2014-02-26 2016-03-18 Devialet Dispositif de commande d'un haut-parleur
US9590580B1 (en) * 2015-09-13 2017-03-07 Guoguang Electric Company Limited Loudness-based audio-signal compensation

Also Published As

Publication number Publication date
FR3087075A1 (fr) 2020-04-10

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