FR3069092A1 - PROCESS FOR IMPROVING THE QUALITY OF STANDARDIZED LISTENING MEANS - Google Patents

PROCESS FOR IMPROVING THE QUALITY OF STANDARDIZED LISTENING MEANS Download PDF

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Publication number
FR3069092A1
FR3069092A1 FR1700751A FR1700751A FR3069092A1 FR 3069092 A1 FR3069092 A1 FR 3069092A1 FR 1700751 A FR1700751 A FR 1700751A FR 1700751 A FR1700751 A FR 1700751A FR 3069092 A1 FR3069092 A1 FR 3069092A1
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signal processing
quality
software
standardized
audio
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FR3069092B1 (en
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Claude Bernard Roch Andre Carpentier
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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/13—Aspects of volume control, not necessarily automatic, in stereophonic sound systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field

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  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

Ce procédé consiste a utiliser comme source de modulation un appareil mobile, à y installer un logiciel de traitement audio et à télécharger le paramétrage de ce logiciel en fonction du moyen d'écoute qui a été établit par un technicien spécialisé.This method consists in using as a modulation source a mobile device, installing audio processing software and downloading the configuration of this software according to the listening means that has been established by a specialized technician.

Description

La présente invention est un procédé très économique et très efficace destiné à améliorer la qualité de la reproduction sonore des moyens d'écoute standardisés.The present invention is a very economical and very efficient method intended to improve the quality of the sound reproduction of standardized listening means.

Nous entendons par moyens d'écoute standardisés des moyens de reproduction sonore existant à de grands nombres d'exemplaires identiques et donc procurant le même rendu.By standardized listening means we mean means of sound reproduction existing in large numbers of identical copies and therefore providing the same rendering.

À notre connaissance, les deux types de moyens d'écoute standardisés les plus répandus sont d'une part l'écoute en automobile et d'autre part l'écoute au casque.To our knowledge, the two most common types of standardized listening means are, on the one hand, listening in an automobile and, on the other hand, listening with headphones.

En effet, lorsqu'on écoute un morceau de musique dans une automobile et que l'on écoute le même morceau dans le même modèle d'automobile équipé de la même installation audio et avec le même réglage, on obtient le même résultat.Indeed, when you listen to a piece of music in an automobile and you listen to the same song in the same model of automobile equipped with the same audio installation and with the same setting, you get the same result.

D'autre part deux casques audio d'un même modèle procurent à l'écoute des résultats identiques.On the other hand two audio headsets of the same model provide identical listening results.

La qualité de restitution des moyens d'écoute utilisant des haut-parleurs est systématiquement dégradée par le local dans lequel ils sont installés ce qui est particulièrement vrai pour les automobiles. D'autre part la qualité de restitution des casques audio d'entrée et de milieu de gamme est perfectible.The quality of restitution of the listening means using loudspeakers is systematically degraded by the room in which they are installed, which is particularly true for automobiles. On the other hand, the quality of reproduction of entry-level and mid-range headphones can be improved.

La qualité de restitution de ces deux moyens peut être très sensiblement améliorée par traitement du signal.The quality of reproduction of these two means can be very significantly improved by signal processing.

Pour une modulation stéréophonique ce traitement consiste en :For a stereophonic modulation this treatment consists of:

une égalisation de niveau de chacun des deux canaux une égalisation de la phase stéréophonique un décalage temporel de l'un des canaux lorsque l'auditeur n'est pas comme en automobile à égale distance des deux haut-parleursa level equalization of each of the two channels an equalization of the stereophonic phase a time shift of one of the channels when the listener is not like in a car at equal distance from the two speakers

Actuellement, lorsqu'on veut appliquer un tel traitement a un moyen de restitution sonore, l'état de l'art consiste à intercaler entre la source modulation et l'amplificateur de puissance un appareil de traitement du signal agencé pour permettre le traitement décrit plus haut.Currently, when it is desired to apply such processing to a sound reproduction means, the state of the art consists in interposing between the modulation source and the power amplifier a signal processing apparatus arranged to allow the processing described more high.

Le problème est que très rares sont les revendeurs capables de régler convenablement les appareils de traitement du signal et que le recours à un technicien spécialisé n'est pas à la portée de la quasi-totalité des utilisateurs.The problem is that very few resellers are able to properly adjust signal processing equipment and that the use of a specialized technician is not within the reach of almost all users.

Il existe des appareils de traitement du signal capables d'effectuer des mesures acoustiques et d'en déduire automatiquement les réglages appropriés, mais ces appareils sont très onéreux et donc réservés aux installations de très haut de gamme.There are signal processing devices capable of performing acoustic measurements and automatically deducing the appropriate settings, but these devices are very expensive and therefore reserved for very high-end installations.

Dans le cas le plus général ]/amélioration obtenue est médiocre.In the most general case] / improvement obtained is poor.

La présente invention est un procédé qui va permettre d'obtenir une amélioration optimale à un prix de revient dérisoire si le moyen d'écoute standardisé existe en un grand nombre d'exemplaires comme par exemple les automobiles et les casques audio.The present invention is a method which will make it possible to obtain an optimal improvement at a ridiculous cost price if the standardized listening means exists in a large number of copies such as for example automobiles and headphones.

Suivant la présente invention l'achat de l'appareil de traitement du signal est remplacé par l'utilisation comme source audio d'une source mobile que possède déjà le plus souvent l'utilisateur, à savoir un téléphone portable, un baladeur ou une tablette et en installant sur cette source un logiciel de traitement du signal agencé pour effectuer le traitement décrit plus haut. Ce logiciel sera installé en aval du logiciel de lecture des fichiers audio.According to the present invention, the purchase of the signal processing apparatus is replaced by the use as audio source of a mobile source which the user most often already owns, namely a mobile telephone, a portable music player or a tablet. and by installing on this source software for processing the signal arranged to carry out the processing described above. This software will be installed downstream of the audio file playback software.

Une variante consiste à développer un logiciel de lecture audio augmenté de moyens de traitement du signal. Quelle que soit l'option choisie le coût du développement de ce logiciel sera amorti sur l'ensemble des moyens standardisés qui en seront équipés c'est à dire que rapporté à un moyen son coût sera négligeable.A variant consists in developing audio playback software augmented with signal processing means. Whichever option is chosen, the cost of developing this software will be amortized over all of the standardized means which will be equipped with it, that is to say that compared to a means, its cost will be negligible.

Suivant la présente invention le réglage optimal est obtenu en confiant cette tâche à un technicien spécialisé son coût sera de plusieurs centaines d'euros mais comme ce coût sera amorti sur plusieurs milliers de moyens d'un même modèle, son prix de revient unitaire sera négligeable.According to the present invention the optimal setting is obtained by entrusting this task to a specialized technician its cost will be several hundred euros but as this cost will be amortized over several thousand means of the same model, its unit cost will be negligible .

Tous les appareils mobiles peuvent être connectés soit directement soit indirectement au travers d'un ordinateur au réseau Internet.All mobile devices can be connected either directly or indirectly through a computer to the Internet.

Cette possibilité de connexion permettra de télécharger les moyens de réglage des moyens de reproduction sonore standardisés ayant fait l'objet d'une étude par un technicien.This connection possibility will make it possible to download the means for adjusting the standardized sound reproduction means which have been the subject of a study by a technician.

Plusieurs options sont possibles, en fonction de la politique de commercialisation choisie. L'option qui prendra le moins de place en mémoire et permettra à un utilisateur qui à plusieurs voitures et/ou plusieurs casques de se servir de plusieurs logiciel réglages consistera à télécharger paramétrable et d'autre part un d'une part un ou plusieurs paramétrages correspondant à un ou plusieurs moyens de reproduction sonores standardisés.Several options are possible, depending on the marketing policy chosen. The option which will take up the least space in memory and will allow a user who has several cars and / or several helmets to use several adjustment software will consist in configurable downloading and on the other hand one or more settings corresponding to one or more standardized sound reproduction means.

Claims (3)

Revendicationsclaims 1- Procédé d'amélioration par traitement du signal de la qualité de restitution sonore des moyens d'écoute standardisés, caractérisé par le fait que les traitements du signal à appliquer à savoir l'égalisation de niveau, l'égalisation de phase et le décalage temporel d'un des canaux sont définis pour chaque moyen par un spécialiste et exécuté par un logiciel de traitement du signal installé sur un appareil mobile servant de source audio, en aval du logiciel de lecture audio.1- Improvement process by signal processing of the quality of sound reproduction of standardized listening means, characterized by the fact that the signal processing to be applied, namely level equalization, phase equalization and offset time of one of the channels are defined for each means by a specialist and executed by signal processing software installed on a mobile device serving as an audio source, downstream of the audio playback software. 2 - Procédé d'amélioration par traitement du signal de la qualité de restitution sonore des moyens d'écoute standardisés conforme à la revendication 1 et caractérisés par le fait que le logiciel de traitement du signal est complété par un moyen de lecture de fichiers audio pour ne faire qu'un seul logiciel.2 - Method for improving the sound reproduction quality of the standardized listening means by signal processing according to claim 1 and characterized by the fact that the signal processing software is supplemented by a means for reading audio files for do only one software. 3 - Appareil mobile tel que téléphone, baladeur ou tablette, caractérisé par le fait qu'il est équipé d'un moyen de traitement du signal audio selon le procédé de la revendication 1 ou celui de la revendication 2.3 - Mobile device such as telephone, portable player or tablet, characterized in that it is equipped with an audio signal processing means according to the method of claim 1 or that of claim 2.
FR1700751A 2017-07-13 2017-07-13 PROCESS FOR IMPROVING THE QUALITY OF STANDARDIZED LISTENING MEANS Active FR3069092B1 (en)

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FR1700751 2017-07-13

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1558056A1 (en) * 2004-01-13 2005-07-27 Cabasse SA Acoustic system for motor vehicles and corresponding device
WO2016071586A1 (en) * 2014-11-07 2016-05-12 Claude Carpentier Novel method of improving the restitution of stereophonic modulations in automobiles

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1558056A1 (en) * 2004-01-13 2005-07-27 Cabasse SA Acoustic system for motor vehicles and corresponding device
WO2016071586A1 (en) * 2014-11-07 2016-05-12 Claude Carpentier Novel method of improving the restitution of stereophonic modulations in automobiles

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
BOSE R ET AL: "Morphing Smartphones into Automotive Application Platforms", COMPUTER, IEEE COMPUTER SOCIETY, USA, vol. 44, no. 5, 1 May 2011 (2011-05-01), pages 53 - 61, XP011477975, ISSN: 0018-9162, DOI: 10.1109/MC.2011.126 *
F.J.ARCHIBALD: "Audio System for Portable Market", AES CONVENTION 2006, 6906, 5 October 2006 (2006-10-05) - 8 October 2006 (2006-10-08), San Francisco, XP040373235 *
PIAZZA FRANCESCO ET AL: "The hArtes CarLab: Hardware Implementation and Algorithm Development", CONFERENCE: 36TH INTERNATIONAL CONFERENCE: AUTOMOTIVE AUDIO; JUNE 2009, AES, 60 EAST 42ND STREET, ROOM 2520 NEW YORK 10165-2520, USA, 1 June 2009 (2009-06-01), XP040509291 *

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