EP1198972A1 - Electric signal processing for electroacoustic transducer - Google Patents

Electric signal processing for electroacoustic transducer

Info

Publication number
EP1198972A1
EP1198972A1 EP99932953A EP99932953A EP1198972A1 EP 1198972 A1 EP1198972 A1 EP 1198972A1 EP 99932953 A EP99932953 A EP 99932953A EP 99932953 A EP99932953 A EP 99932953A EP 1198972 A1 EP1198972 A1 EP 1198972A1
Authority
EP
European Patent Office
Prior art keywords
electrical
original
components
signal
oscillator
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.)
Granted
Application number
EP99932953A
Other languages
German (de)
French (fr)
Other versions
EP1198972B1 (en
Inventor
Marc Charbonnaux
Patrice Morchain
Pierre Piccaluga
Claude-Annie Perrichon
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.)
Atao
Original Assignee
Atao
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 Atao filed Critical Atao
Publication of EP1198972A1 publication Critical patent/EP1198972A1/en
Application granted granted Critical
Publication of EP1198972B1 publication Critical patent/EP1198972B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • 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

Definitions

  • the transformation of the electrical signal is poorly executed by the transducer (s). Indeed, the electrical pulses go at the speed of the electrons while the membrane and its motor constitute an electro-mechanical unit of a given weight.
  • the weight of this mobile assembly has a
  • This process creates micro noise on the original electrical signal which does not change the general curve of the signal but which gives an apparently parasitic appearance of the original signal.
  • the components of this process can be passive, active electrical components, microprocessors, integrated circuits or technology of the future.
  • This process is represented by (Fig.1) whose curve 1 of electrical audio signal is modified in curve 2 according to the present process which modifies the perfectly smooth signal into at least one wavy signal.
  • the present method also has an apparatus made up (Fig. 2) of several electrical components, in this case of coiled resistors, mounted in parallel.
  • the first channel (1) consists of at least one component
  • the second parallel channel (2) consists of at least one electrical component, in this case consists of two components connected in series.
  • the assembly thus constituted is an interface module, excited by the original electrical signal, mounted between the amplifier (4) and the acoustic enclosure (5).
  • the supply wire (6) of the + receiving the interface module of the present process is carried out by a person skilled in the art.
  • This device made up of components of the same nature with different values, is mounted on any electrical supply of an acoustic enclosure or of at least one electro-acoustic transducer.
  • This process is another variant of the process consisting on the track (1) of at least one electrical component, on the track (2) of at least one electrical component, in this case being two resistors (4, 6) different windings, 3.3 Ohms and 8.2 Ohms respectively.
  • Track (3) consists of a self (5) of 18 turns. All of the components in parallel are mounted on the power supply of at least one electroacoustic transducer (8) of a television, linked to its audio generator (7).
  • the play of the values of the components is such that the original audio signal, analog or digital is not altered as a whole by an attenuation of frequencies but undergoes micro-oscillations appearing to be like a small regular interference due to the electrical phase shift caused by the components, which intervene directly by their nature on the current of the supply of the electrical signal.
  • This module is an interface device between, an analog or digital audio signal, and an electroacoustic transducer so that it can more easily absorb the electrical impulses to be transformed into mechanical movement. (F * d- 3)
  • the module must never constitute a filter at attenuation frequencies of 6 dB or more.
  • the aim of the present method and apparatus is to improve the conditions of comfort of electro-acoustic reproduction and the quality of acoustic reproduction which can be used throughout the world of sound reproduction, audio and audiovisual.

Landscapes

  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • General Health & Medical Sciences (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Amplifiers (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Selective Calling Equipment (AREA)
  • Control Of Electric Motors In General (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

It is usual to utilize electric current filters for electroacoustic transducers, the filters are in general frequency mixers. Audio electric signals have a pulse response quality and excellent frequency adjustment. As for electroacoustic transducers, the transformation is not properly carried out for electroacoustic transducers. The electric pulses travel at the speed of the electrons whereas the membrane and its motor have a specific weight. The weight has a mechanical inertia preventing an instantaneous response to the electric effects. A method can modify at least one modulation of the original electric pulse into micro electrical phase shifts. The micro phase shifts are generated by impedance of the components. An apparatus has several components of similar type mounted in parallel, thereby forming a self-powered oscillator, energized by the original electric signal. The apparatus is mounted on the circuit powering the enclosure.

Description

TRAITEMENT DE SIGNAL ELECTRIQUE POUR TRANSDUCTEUR ELECTROACOUSTIQUEELECTRIC SIGNAL PROCESSING FOR ELECTROACOUSTIC TRANSDUCER
Il est habituel d'utiliser des filtres de courant électrique pour lesIt is usual to use electric current filters for
5 transducteurs électro acoustiques. Ces filtres sont en général des attenueurs de fréquence dont la pente de correction est de 6 dB, 12 dB, 18 dB. Les consoles de mixage utilisent ces filtres plus ou moins sophistiqués afin de modifier les fréquences de bande passante audio. D'autre part, il est d'usage d'avoir des courbes du signal5 electro-acoustic transducers. These filters are generally frequency attenuators whose correction slope is 6 dB, 12 dB, 18 dB. Mixing consoles use these more or less sophisticated filters to modify the audio bandwidth frequencies. On the other hand, it is customary to have signal curves
10 électrique les plus parfaites possible, c'est à dire d'obtenir des réponses de type de signal carré les plus parfaites possible. Il est constaté par les technologies utilisées actuellement que les signaux électriques audio ont une qualité excellente en réponse impulsionnelle et en régulation de fréquence. En ce qui concerne les10 most perfect electrical possible, that is to say to obtain the most perfect square signal type responses possible. It is noted by the technologies currently used that the electrical audio signals have an excellent quality in impulse response and in frequency regulation. Concerning the
15 transducteurs électro acoustiques, la transformation du signal électrique est mal exécutée par le ou les transducteurs. En effet, les impulsions électriques vont à la vitesse des électrons alors que la membrane et son moteur constituent un ensemble électro mécanique d'un poids donné. Le poids de cet ensemble mobile a une15 electro-acoustic transducers, the transformation of the electrical signal is poorly executed by the transducer (s). Indeed, the electrical pulses go at the speed of the electrons while the membrane and its motor constitute an electro-mechanical unit of a given weight. The weight of this mobile assembly has a
20 inertie mécanique empêchant de répondre instantanément aux sollicitations électriques du signal audio, créant ainsi des distorsions, voire des absences de son, la membrane ne pouvant répondre simultanément à toutes les valeurs électriques. Le présent procédé permet de modifier l'impulsion électrique20 mechanical inertia preventing instant response to the electrical stresses of the audio signal, thus creating distortions or even absence of sound, the membrane being unable to respond simultaneously to all the electrical values. The present process makes it possible to modify the electric pulse
25 d'origine en au moins une modulation, impulsions, de micro déphasages électriques décalant l'impulsion électrique instantanée en des micro-impulsions électriques retardées. Ainsi la force motrice de démarrage du mouvement sur la membrane est répartie dans un espace temps très court afin de ne pas saturer en courant la bobine,25 of origin in at least one modulation, pulses, of electrical micro phase shifts shifting the instantaneous electrical pulse into delayed electrical micro-pulses. Thus the driving force for starting the movement on the diaphragm is distributed in a very short space of time so as not to saturate the coil with current,
30 moteur de l'ensemble mécanique en mouvement, qui peut ainsi absorber, une fois le facteur d'accélération acquis, le reste du courant de l'impulsion d'origine. Ces micro-courants sont générés par les impédances qui traversées par le signal électrique d'origiπe.généreπt des oscillations électriques par leurs" forces contre-électromotrices. Les composants sont montés en parallèle sur au moins deux niveaux. Les composants, montés sur trois niveaux parallèles répondent mieux en qualité de déphasage électrique pour l'absorption électrique des transducteurs . Le procédé est donc la mise en place d'un oscillateur auto alimenté, activé par le signal audio d'origine traversant les composants le constituant, pour obtenir un signal oscillé, de très faible amplitude, d'oscillations de très grandes fréquences.(Fig1).Ce nouveau signal30 motor of the mechanical assembly in motion, which can thus absorb, once the acceleration factor acquired, the rest of the current of the original pulse. These micro-currents are generated by the impedances which pass through the electrical signal of origiπe.généreπt of the electrical oscillations by their " counter-electromotive forces. The components are mounted in parallel on at least two levels. The components, mounted on three parallel levels respond better in terms of electrical phase shift for the electrical absorption of the transducers. The process is therefore the installation of a self-powered oscillator , activated by the original audio signal passing through the constituent components, to obtain an oscillated signal, of very low amplitude, of very high frequency oscillations (Fig1 This new signal
(2) garde l'aspect -général du signal d'origine (1) qui est modulé de façon continue. Ce procédé de montage en parallèle de composants de même nature mais de valeurs différentes permet ainsi une modification du signal audio^ numérique . d'alimentation de transducteurs électro acoustiques, de au moins un transducteur acoustique ou d'une enceinte acoustique. En effet, ce procédé se place entre un ampli et une enceinte acoustique ou un transducteur , sur la ligne d'alimentation.(2) keeps the general appearance of the original signal (1) which is continuously modulated. This method of parallel mounting of components of the same kind but of different values thus allows a modification of the digital audio signal. for supplying electro-acoustic transducers, at least one acoustic transducer or an acoustic enclosure. Indeed, this process is placed between an amplifier and an acoustic enclosure or a transducer, on the supply line.
Ce procédé crée des micro parasites sur le signal électrique d'origine qui ne change en rien la courbe générale du signal mais qui donne un aspect apparemment parasité du signal d'origine. Les composants de ce procédé peuvent être de nature de composants électriques passifs, actifs , de micro processeurs, de circuits intégrés ou de technologie d' avenir.This process creates micro noise on the original electrical signal which does not change the general curve of the signal but which gives an apparently parasitic appearance of the original signal. The components of this process can be passive, active electrical components, microprocessors, integrated circuits or technology of the future.
Ce procédé est représenté par la (Fig.1) dont la courbe 1 de signal audio électrique est modifiée en courbe 2 suivant le présent procédé qui modifie le signal parfaitement lisse en au moins un signal ondulé. Le présent procédé a également un appareil constitué (Fig.2) de plusieurs composants électriques, dans ce cas de résistances bobinées, montées en parrallèle. La première voie (1) est constituée par au moins un composant , la deuxième voie (2) parallèle est constituée par au moins un composant électrique , dans ce cas est constituée par deux composants montés en série. La troisième voieThis process is represented by (Fig.1) whose curve 1 of electrical audio signal is modified in curve 2 according to the present process which modifies the perfectly smooth signal into at least one wavy signal. The present method also has an apparatus made up (Fig. 2) of several electrical components, in this case of coiled resistors, mounted in parallel. The first channel (1) consists of at least one component, the second parallel channel (2) consists of at least one electrical component, in this case consists of two components connected in series. The third way
(3) est réalisée également par au moins un composant électrique, dans ce cas est constituée par deux composants en série. L'ensemble ainsi constitué est un module d'interface, excité par le signal électrique d'origine, monté entre l'ampli (4) et l'enceinte acoustique (5). Le fil d'alimentation (6) du + recevant le module d'interface du présent procédé. Cet exemple, non limitatif est réalisé par un homme de l'art. Cet appareil constitué de composants de même nature de valeurs différentes, est monté sur n'importe quelle alimentation électrique d'enceinte acoustique ou de au moins un transducteur élecro-acoustique.(3) is also carried out by at least one electrical component, in this case consists of two components in series. The assembly thus constituted is an interface module, excited by the original electrical signal, mounted between the amplifier (4) and the acoustic enclosure (5). The supply wire (6) of the + receiving the interface module of the present process. This nonlimiting example is carried out by a person skilled in the art. This device made up of components of the same nature with different values, is mounted on any electrical supply of an acoustic enclosure or of at least one electro-acoustic transducer.
Ce procédé (fig 3) est une autre variante du procédé constitué sur la voie (1) d'au moins un composant électrique, sur la voie (2) d'au moins un composant électrique, étant dans ce cas deux résistances (4,6) bobinées différentes, respectivement de 3,3 Ohms et de 8,2 Ohms. La voie (3) est constituée d'une self (5) de 18 spires. L'ensemble des composants en parallèle est monté sur l'alimentation de au moins un transducteur électroacoustique (8) d'une télévision, lié à son générateur (7) audio. Le jeu des valeurs des composants est tel que le signal audio d'origine, analogique ou numérique n'est pas altéré dans son ensemble par une atténuation de fréquences mais subit des micro-oscillations paraissant être comme un petit parasitage régulier dû au déphasage électrique provoqué par les composants, qui interviennent directement par leur nature sur le courant de l'alimentation du signal électrique . Ce module est un appareil d'interface entre, un signal audio analogique ou numérique, et un tranducteur électro acoustique de façon à ce qu'il puisse absorber plus aisément les impulsions électriques à transformer en mouvement mécanique. ( F* j- 3)This process (fig 3) is another variant of the process consisting on the track (1) of at least one electrical component, on the track (2) of at least one electrical component, in this case being two resistors (4, 6) different windings, 3.3 Ohms and 8.2 Ohms respectively. Track (3) consists of a self (5) of 18 turns. All of the components in parallel are mounted on the power supply of at least one electroacoustic transducer (8) of a television, linked to its audio generator (7). The play of the values of the components is such that the original audio signal, analog or digital is not altered as a whole by an attenuation of frequencies but undergoes micro-oscillations appearing to be like a small regular interference due to the electrical phase shift caused by the components, which intervene directly by their nature on the current of the supply of the electrical signal. This module is an interface device between, an analog or digital audio signal, and an electroacoustic transducer so that it can more easily absorb the electrical impulses to be transformed into mechanical movement. (F * d- 3)
Il est à noter que le module ne doit jamais constituer un filtre en fréquences d'atténuation de 6 dB ou plus.It should be noted that the module must never constitute a filter at attenuation frequencies of 6 dB or more.
Le présent procédé et appareil ont pour but d'améliorer les conditions de confort de la reproduction électro acoustique et la qualité de reproduction acoustique utilisable dans tout le monde de la reproduction sonore, de l'audio et de l'audiovisuel. The aim of the present method and apparatus is to improve the conditions of comfort of electro-acoustic reproduction and the quality of acoustic reproduction which can be used throughout the world of sound reproduction, audio and audiovisual.

Claims

REVENDICATIONS
1- Procédé dans le domaine de la reproduction du son constitué d'un oscillateur placé sur l'alimentation de signal électrique, analogique ou numérique, de au moins un transducteur électro acoustique, oscillateur qui modifie le signal électrique d'origine en au moins un signal électrique oscillant de très faible amplitude et de grandes fréquences ne modifiant pas l'aspect général du signal d'origine, oscillateur auto alimenté par le signal d'origine, qui traversant l'oscillateur modifie l'impulsion électrique d'origine en au moins une impulsion de micro-déphasage électrique.1- Method in the field of sound reproduction consisting of an oscillator placed on the electrical signal supply, analog or digital, of at least one electro-acoustic transducer, oscillator which modifies the original electrical signal by at least one oscillating electrical signal of very low amplitude and large frequencies which does not modify the general appearance of the original signal, self-powered oscillator powered by the original signal, which passing through the oscillator modifies the original electrical pulse by at least an electrical micro-phase shift pulse.
2- Appareil pour la reproduction du son en numérique ou en analogique, constitué d'au moins un composant électrique par voie sur au moins deux voies en parallèle, constitué de composants passifs de même nature montés sur n'importe quelle alimentation électrique de au moins un transducteur électro acoustique, ou enceinte acoustique, constituant ainsi un oscillateur créant au moins une modulation de micro-déphasage électrique de l'impulsion électrique d'origine .2- Apparatus for sound reproduction in digital or analog, consisting of at least one electrical component per channel on at least two parallel channels, consisting of passive components of the same kind mounted on any electrical supply of at least an electro-acoustic transducer, or acoustic enclosure, thus constituting an oscillator creating at least one modulation of electrical micro-phase shift of the original electrical pulse.
3- Appareil selon la revendication 2 caractérisé par des composants électriques de valeurs différentes.3- Apparatus according to claim 2 characterized by electrical components of different values.
4- Appareil selon les revendications 2 et 3 caractérisé par des réalisations en composants actifs4- Apparatus according to claims 2 and 3 characterized by embodiments in active components
5- Appareil selon les revendications 2 et 3 caractérisé par des réalisations en micros-processeurs.5- Apparatus according to claims 2 and 3 characterized by embodiments in microprocessors.
6- Appareil selon les revendications 2 et 3 caractérisé par des composanrts de technologie d'avenir.6- Apparatus according to claims 2 and 3 characterized by components of future technology.
EP99932953A 1998-07-21 1999-07-22 Electric signal processing for electroacoustic transducer Expired - Lifetime EP1198972B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9809441A FR2781637B1 (en) 1998-07-21 1998-07-21 ELECTRIC SIGNAL PROCESSING FOR ELECTROACOUSTIC TRANSDUCER
PCT/FR1999/001808 WO2001008446A1 (en) 1998-07-21 1999-07-22 Electric signal processing for electroacoustic transducer

Publications (2)

Publication Number Publication Date
EP1198972A1 true EP1198972A1 (en) 2002-04-24
EP1198972B1 EP1198972B1 (en) 2004-09-29

Family

ID=26234457

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99932953A Expired - Lifetime EP1198972B1 (en) 1998-07-21 1999-07-22 Electric signal processing for electroacoustic transducer

Country Status (15)

Country Link
US (1) US7024007B1 (en)
EP (1) EP1198972B1 (en)
JP (1) JP2003527773A (en)
CN (1) CN1371588A (en)
AT (1) ATE278309T1 (en)
AU (1) AU778948B2 (en)
BR (1) BR9917413A (en)
CA (1) CA2379888C (en)
DE (1) DE69920775T2 (en)
DK (1) DK1198972T3 (en)
ES (1) ES2228073T3 (en)
FR (1) FR2781637B1 (en)
IL (1) IL147735A0 (en)
NO (1) NO20020315L (en)
WO (1) WO2001008446A1 (en)

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
WO2010103194A2 (en) * 2009-03-12 2010-09-16 Buendia Jose Mechanical movements adjusted by electromagnetic probe
CN102662319B (en) * 2012-03-05 2014-07-30 北京联合大学 A simulator for generating great inertia and delay controlled object signals
US11348568B2 (en) * 2020-08-28 2022-05-31 AMP Devices, LLC Reactive silent speaker device for simulating harmonic nonlinearities of a loudspeaker

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GB1541004A (en) * 1975-11-07 1979-02-21 Nat Res Dev Hearing aid
US4243840A (en) * 1978-12-22 1981-01-06 Teledyne Industries, Inc. Loudspeaker system
DE2952113C2 (en) * 1979-12-22 1983-05-19 Matth. Hohner Ag, 7218 Trossingen String chorus circuit
US4428270A (en) * 1981-11-16 1984-01-31 The Wurlitzer Company Electronic vibrato or celeste
US4602337A (en) * 1983-02-24 1986-07-22 Cox James R Analog signal translating system with automatic frequency selective signal gain adjustment
NL8402074A (en) * 1984-06-29 1986-01-16 Juhama S A Stereo amplifier system with independently controlled channels - enables frequency characteristics of true stereo signals to be dynamically altered or stereo effect created from mono input
FR2620282B1 (en) * 1987-09-04 1991-09-20 Thomson Csf PHASE DEMODULATION DEVICE AND ITS APPLICATION TO AN MLS TYPE LANDING SYSTEM
JPH05191885A (en) * 1992-01-10 1993-07-30 Clarion Co Ltd Acoustic signal equalizer circuit
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Also Published As

Publication number Publication date
CN1371588A (en) 2002-09-25
AU778948B2 (en) 2004-12-23
FR2781637B1 (en) 2002-10-31
FR2781637A1 (en) 2000-01-28
EP1198972B1 (en) 2004-09-29
WO2001008446A1 (en) 2001-02-01
US7024007B1 (en) 2006-04-04
DK1198972T3 (en) 2004-12-27
NO20020315D0 (en) 2002-01-21
CA2379888A1 (en) 2001-02-01
DE69920775T2 (en) 2005-10-13
JP2003527773A (en) 2003-09-16
IL147735A0 (en) 2002-08-14
AU4915899A (en) 2001-02-13
CA2379888C (en) 2009-10-06
ATE278309T1 (en) 2004-10-15
NO20020315L (en) 2002-01-21
BR9917413A (en) 2002-04-09
DE69920775D1 (en) 2004-11-04
ES2228073T3 (en) 2005-04-01

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