EP1198972B1 - Electric signal processing for electroacoustic transducer - Google Patents

Electric signal processing for electroacoustic transducer Download PDF

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Publication number
EP1198972B1
EP1198972B1 EP99932953A EP99932953A EP1198972B1 EP 1198972 B1 EP1198972 B1 EP 1198972B1 EP 99932953 A EP99932953 A EP 99932953A EP 99932953 A EP99932953 A EP 99932953A EP 1198972 B1 EP1198972 B1 EP 1198972B1
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Prior art keywords
electric
components
oscillator
signal
original
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Expired - Lifetime
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EP99932953A
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German (de)
French (fr)
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EP1198972A1 (en
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Marc Charbonnaux
Patrice Morchain
Pierre Piccaluga
Claude-Annie Perrichon
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Atao
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    • 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 electrical impulses go at the speed of the electrons while the diaphragm and its motor constitute an electro assembly mechanics of a given weight.
  • the weight of this mobile assembly has a mechanical inertia preventing instant response to electrical stresses on the audio signal, thus creating distortions, even absence of sound, the membrane being unable to respond simultaneously with all the electrical values.
  • JP-A-05 191884 describes a method for improving the sound quality after the signal came out of a low pass filter. Leaving the filter, the signal has lost part high frequency of the original signal. The signal output from the filter is added to higher harmonic component signals to add the component missing high frequency.
  • WO-A-89 02188 describes a system for demodulating a wave modulated in phase, applicable to a MLS (Microwave Landing System) type system. He uses an oscillator supplying a phase modulator. The modulator output signal phase is mixed with the demodulated signal and applied to a loop avoiding use a voltage controlled oscillator.
  • MLS Microwave Landing System
  • the present process makes it possible to modify the electrical pulse original in at least one modulation, pulse, mic electrical phase shifts shifting the instantaneous electrical impulse into delayed electrical micro-pulses. So the driving force of movement start on the membrane is distributed in a very short space in order not to saturate the coil with current, motor of the moving mechanical assembly, which can thus absorb, once the acceleration factor is acquired, the rest of the current of the original impulse.
  • These micro-currents are generated by impedances which crossed by the original electrical signal, generate 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 as an electrical phase shift for the electrical absorption of transducers.
  • the process is therefore the establishment of a self-powered oscillator, activated by the original audio signal passing through the components constituting, to obtain an oscillated signal, of very low amplitude, oscillations of very large frequencies. (Fig1).
  • This new signal (2) keeps the general appearance of the original signal (1) which is modulated by continuously.
  • This process of mounting components in parallel of the same nature but of different values thus allows a modification of audio, digital, power signal electro-acoustic transducers, of at least one transducer acoustic or acoustic enclosure. Indeed, this process is place between an amplifier and an acoustic enclosure or a transducer, on the power line.
  • This process creates micro parasites on the original electrical signal which does not change the general curve of the signal but which gives an apparently parasitic aspect of the original signal.
  • the components of this process can be electrical components in nature passive, active, micro processors, or integrated circuits.
  • This process is represented by (Fig. 1) whose signal curve 11 electrical audio is modified in curve 12 according to the present process which changes the perfectly smooth signal into at least one wavy signal.
  • the present process also has an apparatus consisting (Fig. 2) of several electrical components, in this case resistors wound, mounted in parallel.
  • the first channel (1) is made up by at least one component
  • the second parallel channel (2) is consisting of at least one electrical component, in this case is consisting of two components mounted in series.
  • the third way (3) is also carried out by at least one electrical component, in this case is constituted by 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 enclosure acoustic (5).
  • the supply wire (6) of the + receiving the module interface of the present process is carried out by a person skilled in the art.
  • This device consisting of components of same nature of different values, mounted on any power supply for acoustic enclosure or at least one electro-acoustic transducer.
  • This method is another variant of the method constituted on the track (21) of at least one electrical component, on track (22) of at least minus an electrical component, being in this case two resistors (24.26) different wires, 3.3 Ohms and 8.2 respectively Ohms.
  • the track (23) consists of a self (25) of 18 turns. All the components in parallel are mounted on supplying at least one electroacoustic transducer (28) a television, linked to its audio generator (27).
  • the game of values components is such as the original audio signal, analog or digital is not altered as a whole by an attenuation frequencies but undergoes micro-oscillations appearing to be as 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 electrical signal supply.
  • This module is an interface device between, an audio signal analog or digital, and an electro-acoustic transducer of so that it can more easily absorb the impulses electric to transform into mechanical movement. (Fig.3)
  • the module must never constitute a filter in attenuation frequencies of 6 dB or more.
  • the aim of the present method and apparatus is to improve the conditions of electro-acoustic reproduction comfort and the quality of acoustic reproduction usable in everyone in the audio, audio and audiovisual reproduction.

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  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Otolaryngology (AREA)
  • General Health & Medical Sciences (AREA)
  • 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)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Control Of Electric Motors In General (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

Il est habituel d'utiliser des filtres de courant électrique pour les transducteurs électro acoustiques. Ces filtres sont en général des atténueurs 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 signal électrique les plus parfaites possible, c'est à dire d'obtenir des réponses de type de signal carré les plus parfaites possible.It is usual to use electric current filters for electro-acoustic transducers. These filters are generally frequency attenuators with a correction slope of 6 dB, 12 dB, 18 dB. Mixing consoles use these filters more or less sophisticated to change bandwidth frequencies audio. On the other hand, it is customary to have signal curves as perfect as possible, i.e. to obtain the most perfect square signal type responses 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 les transducteurs électro acoustiques, la transformation du signal électrique est mal éxécutée par le ou les transducteurs.It is noted by the technologies currently used that the electrical audio signals have excellent quality in response pulse and frequency regulation. Concerning the electroacoustic transducers, signal transformation is poorly executed by the transducer (s).

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 une 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.Indeed, the electrical impulses go at the speed of the electrons while the diaphragm and its motor constitute an electro assembly mechanics of a given weight. The weight of this mobile assembly has a mechanical inertia preventing instant response to electrical stresses on the audio signal, thus creating distortions, even absence of sound, the membrane being unable to respond simultaneously with all the electrical values.

JP-A-05 191884 décrit un procédé pour améliorer la qualité du son après que le signal est sorti d'un filtre passe-bas. En sortant du filtre, le signal a perdu une partie de haute fréquence du signal d'origine. Le signal fourni en sortie du filtre est ajouté à des signaux composant des harmoniques plus hautes pour ajouter la composante haute fréquence manquante.JP-A-05 191884 describes a method for improving the sound quality after the signal came out of a low pass filter. Leaving the filter, the signal has lost part high frequency of the original signal. The signal output from the filter is added to higher harmonic component signals to add the component missing high frequency.

WO-A-89 02188 décrit un système de démodulation d'une onde modulée en phase, applicable à un système de type MLS (Microwave Landing System). Il utilise un oscillateur alimentant un modulateur de phase. Le signal de sortie du modulateur de phase est mélangé au signal démodulé et il est appliqué à une boucle en évitant d'utiliser un oscillateur commandé en tension.WO-A-89 02188 describes a system for demodulating a wave modulated in phase, applicable to a MLS (Microwave Landing System) type system. He uses an oscillator supplying a phase modulator. The modulator output signal phase is mixed with the demodulated signal and applied to a loop avoiding use a voltage controlled oscillator.

Le présent procédé permet de modifier l'impulsion électrique 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, 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'origine, générent des oscillations électriques par leurs forces contre-électromotrices. The present process makes it possible to modify the electrical pulse original in at least one modulation, pulse, mic electrical phase shifts shifting the instantaneous electrical impulse into delayed electrical micro-pulses. So the driving force of movement start on the membrane is distributed in a very short space in order not to saturate the coil with current, motor of the moving mechanical assembly, which can thus absorb, once the acceleration factor is acquired, the rest of the current of the original impulse. These micro-currents are generated by impedances which crossed by the original electrical signal, generate electrical oscillations by their counter-electromotive forces.

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.The components are mounted in parallel on at least two levels. The components, mounted on three parallel levels respond better as an electrical phase shift for the electrical absorption of transducers.

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 fréauences.(Fig1).Ce nouveau 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.The process is therefore the establishment of a self-powered oscillator, activated by the original audio signal passing through the components constituting, to obtain an oscillated signal, of very low amplitude, oscillations of very large frequencies. (Fig1). This new signal (2) keeps the general appearance of the original signal (1) which is modulated by continuously. This process of mounting components in parallel of the same nature but of different values thus allows a modification of audio, digital, power signal electro-acoustic transducers, of at least one transducer acoustic or acoustic enclosure. Indeed, this process is place between an amplifier and an acoustic enclosure or a transducer, on the power 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, ou de circuits intégrés.This process creates micro parasites on the original electrical signal which does not change the general curve of the signal but which gives an apparently parasitic aspect of the original signal. The components of this process can be electrical components in nature passive, active, micro processors, or integrated circuits.

Ce procédé est représenté par la (Fig.1) dont la courbe 11 de signal audio électrique est modifiée en courbe 12 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 voie (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.This process is represented by (Fig. 1) whose signal curve 11 electrical audio is modified in curve 12 according to the present process which changes the perfectly smooth signal into at least one wavy signal. The present process also has an apparatus consisting (Fig. 2) of several electrical components, in this case resistors wound, mounted in parallel. The first channel (1) is made up by at least one component, the second parallel channel (2) is consisting of at least one electrical component, in this case is consisting of two components mounted in series. The third way (3) is also carried out by at least one electrical component, in this case is constituted by 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 enclosure acoustic (5). The supply wire (6) of the + receiving the module interface of the present process. This nonlimiting example is carried out by a person skilled in the art. This device consisting of components of same nature of different values, mounted on any power supply for acoustic enclosure or at least one electro-acoustic transducer.

Ce procédé (fig 3) est une autre variante du procédé constitué sur la voie (21) d'au moins un composant électrique, sur la voie (22) d'au moins un composant électrique, étant dans ce cas deux résistances (24,26) bobinées différentes, respectivement de 3,3 Ohms et de 8,2 Ohms. La voie (23) est constituée d'une self (25) de 18 spires. L'ensemble des composants en parallèle est monté sur l'alimentation de au moins un transducteur électroacoustique (28) d'une télévision, lié à son générateur (27) 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.This method (fig 3) is another variant of the method constituted on the track (21) of at least one electrical component, on track (22) of at least minus an electrical component, being in this case two resistors (24.26) different wires, 3.3 Ohms and 8.2 respectively Ohms. The track (23) consists of a self (25) of 18 turns. All the components in parallel are mounted on supplying at least one electroacoustic transducer (28) a television, linked to its audio generator (27). The game of values components is such as the original audio signal, analog or digital is not altered as a whole by an attenuation frequencies but undergoes micro-oscillations appearing to be as 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 electrical signal supply.

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. (Fig.3)This module is an interface device between, an audio signal analog or digital, and an electro-acoustic transducer of so that it can more easily absorb the impulses electric to transform into mechanical movement. (Fig.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 in 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 electro-acoustic reproduction comfort and the quality of acoustic reproduction usable in everyone in the audio, audio and audiovisual reproduction.

Claims (11)

  1. Method in the sound reproduction field comprising the step of placing an oscillator on the analog or digital electric audio signal feed (6) to at least one electro-acoustic transducer (5, 28), said oscillator modifying the original electric signal (11) to at least one very low amplitude and high frequency oscillating electric signal (12) while not modifying the general aspect of the original signal, said oscillator being self-powered by the original signal which upon passing through the oscillator, modifies the original electric pulse into at least one electric micro-phase-shifted pulse.
  2. The method of claim 1, wherein the oscillator comprises at least one electric component (24, 25, 26) per channel on at least two channels (1, 2, 3; 21, 22, 23) in parallel.
  3. Method according to claim 2, wherein said electric components (24, 25, 26) have different values.
  4. Method according to claim 2, wherein said electric components (24, 25, 26) comprise passive components.
  5. Method according to claim 2 or 3, wherein said electric components (24, 25, 26) comprise active components.
  6. Method according to claim 2 or 3 wherein said electric components (24, 25, 26) comprise microprocessors.
  7. Apparatus for the reproduction of sound in digital or analog, comprising an oscillator with at least one electric component (24, 25, 26) per channel on at least two channels (1, 2, 3; 21, 22, 23) in parallel, said oscillator being mounted on any electric feed to at least one electro-acoustic transducer (28), or acoustic speaker (5), said oscillator creating at least one electric micro-phase shift modulation of the original electric pulse (11).
  8. Apparatus according to claim 7, wherein said electric components (24, 25, 26) have different values.
  9. Apparatus according to claim 7 or 8 wherein said electric components (24, 25, 26) comprise active components.
  10. Apparatus according to claim 7 or 8 wherein said electric components (24, 25, 26) comprise passive components.
  11. Apparatus according to claim 7 or 8 wherein said electric components (24, 25, 26) comprise microprocessors.
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 EP1198972A1 (en) 2002-04-24
EP1198972B1 true EP1198972B1 (en) 2004-09-29

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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)

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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) NO20020315D0 (en)
WO (1) WO2001008446A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
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

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US5388159A (en) * 1991-12-20 1995-02-07 Clarion Co., Ltd. Equalizing circuit for reproduced signals
DE4238808C2 (en) * 1992-11-17 1996-12-19 Siemens Ag Flyback converter switched-mode power supply with sinusoidal current consumption

Also Published As

Publication number Publication date
DE69920775D1 (en) 2004-11-04
EP1198972A1 (en) 2002-04-24
FR2781637A1 (en) 2000-01-28
BR9917413A (en) 2002-04-09
CN1371588A (en) 2002-09-25
JP2003527773A (en) 2003-09-16
AU4915899A (en) 2001-02-13
WO2001008446A1 (en) 2001-02-01
DE69920775T2 (en) 2005-10-13
NO20020315L (en) 2002-01-21
CA2379888A1 (en) 2001-02-01
US7024007B1 (en) 2006-04-04
DK1198972T3 (en) 2004-12-27
NO20020315D0 (en) 2002-01-21
IL147735A0 (en) 2002-08-14
ES2228073T3 (en) 2005-04-01
FR2781637B1 (en) 2002-10-31
AU778948B2 (en) 2004-12-23
CA2379888C (en) 2009-10-06
ATE278309T1 (en) 2004-10-15

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