EP0642292B1 - Dispositif pour la reproduction stéréophonique - Google Patents

Dispositif pour la reproduction stéréophonique Download PDF

Info

Publication number
EP0642292B1
EP0642292B1 EP94106301A EP94106301A EP0642292B1 EP 0642292 B1 EP0642292 B1 EP 0642292B1 EP 94106301 A EP94106301 A EP 94106301A EP 94106301 A EP94106301 A EP 94106301A EP 0642292 B1 EP0642292 B1 EP 0642292B1
Authority
EP
European Patent Office
Prior art keywords
delay
loudspeakers
time
sound
sound propagation
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 - Lifetime
Application number
EP94106301A
Other languages
German (de)
English (en)
Other versions
EP0642292A2 (fr
EP0642292A3 (fr
Inventor
Jörg Höllermann
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.)
Blaupunkt Werke GmbH
Original Assignee
Blaupunkt Werke GmbH
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 Blaupunkt Werke GmbH filed Critical Blaupunkt Werke GmbH
Publication of EP0642292A2 publication Critical patent/EP0642292A2/fr
Publication of EP0642292A3 publication Critical patent/EP0642292A3/fr
Application granted granted Critical
Publication of EP0642292B1 publication Critical patent/EP0642292B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • H04S7/301—Automatic calibration of stereophonic sound system, e.g. with test microphone
    • 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
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/02—Spatial or constructional arrangements of loudspeakers
    • 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
    • H04S7/302—Electronic adaptation of stereophonic sound system to listener position or orientation
    • 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
    • H04S7/307—Frequency adjustment, e.g. tone control

Definitions

  • the invention relates to a device according to the Genus of the main claim.
  • the human ear receives its directional information the evaluation of level and transit time differences between the one received by the right and the left ear acoustic signals. With an ideal listening location in the middle a so-called stereo triangle from the left speaker, then corresponds to the right loudspeaker and listeners Direction information of the stereo recording.
  • the listener is in a place that asymmetrical to a two or more speaker system lies, the sound impression is spatially strong to that next speaker moved.
  • EP 504 562 A1 describes a sound reproduction arrangement for a sound reproduction with a surround sound effect for motor vehicles demonstrated at the audio signal delay devices are provided to a certain in the speaker channels Effect delay time.
  • the delay times of the Sound signal delay devices are set so that in addition a smoothing of the frequency response of the Sound level is reached at the listening location, with the Fluctuation range of the delay is used, which is on Listening location not noticeable.
  • the object of the present invention is in a Establishment according to the genus of the main claim Setting the delay times easier.
  • this task solved in that for playback with the help of each Loudspeaker provided audio signals Pass through delay devices whose Delay time is adjustable that means for measuring the Sound transit times from the individual speakers to the listening location are provided and that the delay times are such are automatically adjustable that the sum of the Sound duration and the respectively set Delay time is the same for all speakers.
  • Establishment also has the advantage that the actual Sound duration is taken into account during manual Measurement for an assumed path of sound between the concerned speaker and the listening location is performed. In the latter, for example, a reflection or Redirection of the sound waves not taken into account.
  • Level differences at the listening location are according to a training the device according to the invention takes into account that further means for measuring the by reproducing a Measurement signal, preferably a noise signal, through the sound level caused by individual loudspeakers at the listening location are provided and that the volume of each Loudspeakers in the sense of level difference compensation can be preset automatically.
  • a Measurement signal preferably a noise signal
  • the set delay times and if applicable, the saved presets of Volume can be stored in a non-volatile memory for several listening locations are. It is preferably provided that a Information about which of the saved Delay times and, if applicable, the saved ones Presets of the volume each time the Device are fed to the delay devices, is also non-volatile storable.
  • a car radio can, for example with the device according to the invention after measuring the Sound transit times for the individual seating positions like this be programmed to play by pressing a button can be optimized for the individual seating positions and that when switching on the device that of a predetermined Delay times assigned to the seat position are set become. This will generally be the seating position of the Driver.
  • Modern receiving devices include often digital signal processing.
  • the delay devices of digital memories are formed, from which the respective audio signals to be delayed compared to registered mail be read out with a time delay.
  • An adaptation of the device according to the invention to the respective arrangement of the speakers and the listening location is in advantageously possible in that for measuring the Sound transit time one speaker at a time Pulse signal is supplied, while a Timer is started, which measures the time until one Measuring microphone the sound level a predetermined threshold exceeds.
  • the Pulse signal via a low-pass filter, preferably third Order with a cut-off frequency of 11 kHz, the loudspeaker is fed.
  • the pulse signal itself is, for example realized by a rectangular pulse of approximately 3 ms duration.
  • Adjustments are made and saved. So is characterized, for example, by further training, that the audio signals further Frequency response equalizer circuits go through that means to measure the frequency response between the speakers and a measuring microphone are provided and that the Frequency response equalizer according to the results of the measurement are adjustable, the respectively set Frequency responses of the individual speakers for different ones Listening locations can be saved.
  • NF 1 represents the NF part for example a car radio with inputs 1, 2, 3 for a receiver, a cassette player and one CD player.
  • Another input 4 which is only for one of the stereo signals, for example the right signal R, is executed, signals from a microphone amplifier 5 fed.
  • an operating mode "Measure” the input switch 6 in the position 4, so that the Signals of the microphone amplifier 5 are forwarded.
  • signals from one of the Inputs 1, 2 or 3 via the input switch 6 one Stereo-analog / digital converter 7 supplied.
  • the Input switch 6 and others described later Changeover switches can be controlled by a control device 8.
  • the outputs of the analog / digital converter 7 are included Inputs of a two-way switch 9 connected to the is also controllable by the control device 8.
  • a two-way switch 9 connected to the is also controllable by the control device 8.
  • digitized audio signals L and R of two each controllable delay devices 10, 11; 12, 13. This can be used as read-write memory (RAM) on a digital Signal processor implemented or external to this be connected.
  • RAM read-write memory
  • the memory access takes place via the internal address and data management of the digital Signal processor.
  • the sequence, switching and level control can by the digital signal processor itself or a external microcontroller.
  • the output signals of the controllable Delay devices are each for the left Front speaker, for the left rear speaker, for the right front speaker and for the right one Rear speakers provided and therefore with LF, LR, RF and RR designated. These signals become inputs of a Quadruple switch 14 fed and in the upper position the fourfold switch to two Stereo digital / analog converters 15, 16 forwarded.
  • the output signals LF ', LR', RF 'and RR' of the Digital / analog converters 15, 16 arrive via controllable Volume control 17, 18, 19, 20 and power amplifier 21, 22, 23, 24 as signals LF ", LR", RF "and RR" to the Speakers 25, 26, 27, 28.
  • a measuring microphone 29 can the different listening locations, in a motor vehicle the different seating positions, and is brought with connected to the input of the microphone amplifier 5.
  • An operating and optionally connected display unit 30 with the in addition to the usual operating functions by a corresponding one Key input measuring the run times and the Sound level can be initiated.
  • the double switch 9 in the lower Position controlled.
  • the individual switches of the four-way switch 14 independently controllable such that one after the other one of the switches to the middle position (connection to Test signal impulse or noise) and the other switches take the lower position, in which the respective Speakers received no signals. That about the Signal chain 29, 5, 4, 6, 7, 9 incoming measurement signal MEAS is then a level meter 31 and then one Threshold discriminator 32 supplied.
  • Whose exit is connected to a time meter 33 which is essentially consists of a counter from the control device started together with a pulse generator 34 and by the output signal of the threshold discriminator 32 is stopped.
  • the output of the pulse generator is through a low pass filter 35 connected to a first input of a changeover switch 36.
  • a Noise generator 37 connected, also from the Control device 8 is controllable.
  • Fig. 2 shows the flow chart of a program for the Control device 8 (Fig. 1) during the operating mode "Measure” and in abbreviated form during the operating mode "Reproduction".
  • the operating mode "Playback” or in Normal operation are the usual functions, such as for example manual control of the volume controls 17 to 20 and the choice between inputs 1, 2 or 3, possible.
  • the control device 8 read out and the actuators 10 to 13 and 17 to 20 are supplied.
  • the double switch 9 and the four-way switch 14 are in the upper Position o.
  • the program part 41 which effects these functions, is run through cyclically, with one before each repetition There is a query as to whether there is an acoustic measurement should. Is this using the operating device 30 has been entered, then after the branch 42 "Measure" operating mode activated. In a program part 43 the volume controls 17 to 20 (Fig. 1) on one defined standard value (medium volume). Furthermore, this part of the program waits for the Operator the measuring microphone 29 (Fig. 1) to the first measuring hearing place.
  • the four-way switch 14 is for the each channel to be measured to the middle position m and moved to the lower position u for the other channels, in which a mute of the connected Loudspeaker.
  • the switch 36 is in the left position 1 posed while the pulse generator 34 and the Runtime meter 33 are started. As soon as the sound level on the measuring microphone exceeds a certain threshold, the runtime meter 33 is stopped at 46 and the measured value stored in the control device 8 (FIG. 1).
  • the program branches depending on whether all four channels have been measured. If this is not yet the case, the program parts 44 to 49 are repeated for the next channel. However, if all four channels have been measured, the measured values T LF , T RF , T LR , T RR (T x ) for the runtimes of the four channels and the measured values L LF , L RF , L LR , L RR (L x ) before.
  • the maximum sound propagation time T max (in processor cycles) was previously determined from the measured sound propagation times.
  • the delay devices 10 to 13 are set to the calculated values and the four values are stored together with an indication of the associated listening location in a non-volatile memory of the control device.
  • a branch 52 takes place depending on whether it is still additional listening locations should be measured. Isn't that the case, at 53 the volume controls are set to the front the activation of the operating mode "measure" existing values plus the offset determined in program part 51 set. At 53 that input 1 is also again 2 or 3 set which was active before the calibration. In addition, the other changeover switches are in accordance with the "Playback" mode switched. The program will then continued at 41. However, there should be additional listening locations be measured, what by an appropriate input after branching 52, the program becomes 43 repeated.
  • FIG. 3 schematically shows a car 60 with a driver 61 and four speakers 25, 26, 27, 28.
  • the distances a, b, c and d are from the driver's head to the individual speakers different sizes. As a result, the aforementioned adverse effects.
  • the facility is supported by the runtime adjustment with the help of controllable delay devices 10 to 13 (Fig. 1) of the effective distance for the psycho-acoustic listening impression made the same size for all speakers.
  • the Speakers 28 farthest from driver 61 its distance d at. Get the other speakers also a distance of d and are apparently in positions 25 ', 26' and 27 ', which lie on a circle around driver 61.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Stereophonic Arrangements (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Claims (10)

  1. Installation de reproduction stéréophonique dans une enceinte fermée, notamment dans un véhicule automobile, comportant plusieurs haut-parleurs et au moins un emplacement d'écoute qui peut être éloigné différemment des haut-parleurs, la reproduction à l'aide des différents haut-parleurs (25, 26, 27, 28) se faisant avec des signaux audio passant dans des installations de temporisation (10, 11, 12, 13) dont les durées de temporisation sont réglables,
    caractérisée en ce que
    des moyens (5, 29, 31, 32, 33, 34, 35) sont prévus pour mesurer les temps de parcours des sons entre les différents haut-parleurs (25, 26, 27, 28) et l'emplacement d'écoute, et
    on règle automatiquement les temps de parcours pour que la somme des temps de parcours du son et de la durée de temporisation chaque fois réglée, soit la même pour tous les haut-parleurs (25, 26, 27, 28).
  2. Installation selon la revendication 1,
    caractérisée en ce que
    les moyens (5, 29, 31, 37) sont prévus pour mesurer le niveau du son produit à l'emplacement de l'écoute par la reproduction d'un signal de mesure, notamment d'un signal de bruit, par les différents haut-parleurs (25, 26, 27, 28), et
    le volume sonore des différents haut-parleurs (25, 26, 27, 28) est préréglable automatiquement dans le sens d'une compensation de la différence des niveaux.
  3. Installation selon l'une quelconque des revendications 1 ou 2,
    caractérisée en ce que
    les durées de temporisation réglées, et le cas échéant des préréglages du volume sonore pour plusieurs emplacements d'écoute, sont mis en mémoire dans une mémoire non volatile.
  4. Installation selon la revendication 3,
    caractérisée en ce qu'
    une information relative aux durées de temporisation mémorisées, et le cas échéant aux préréglages mémorisés des volumes sonores, est appliquée, lors du branchement de l'installation, aux différentes installations de temporisation (10, 11, 12) qui le cas échéant ne peuvent être mémorisées de manière non volatile.
  5. Installation selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    les installations de temporisation (10, 11, 12, 13) sont formées par des mémoires numériques à partir desquelles on extrait les signaux audio à retarder éventuellement par des disques pour avoir une temporisation.
  6. Installation selon la revendication 5,
    caractérisée en ce que
    les mémoires numériques sont les parties d'une installation de traitement numérique du signal audio,
    l'installation convient pour qu'après la mesure des temps de parcours du son (Tx) pour tous les haut-parleurs, on puisse en sélectionner le temps de parcours du son, maximum, (Tmax),
    on calcule les différents temps de parcours selon la formule Tax = (Tmax-Tx) • k dans laquelle Ta représente la durée de temporisation à régler dans les cycles de détection de l'installation de traitement numérique de signaux audio, x représente le haut-parleur correspondant et k le rapport entre la durée du cycle de processeur dans lequel on a mesuré les temps de parcours du son Tx et Tmax, et désignant la durée du cycle de détection.
  7. Installation selon l'une quelconque des revendications précédentes,
    caractérisée en ce qu'
    elle permet de mesurer le temps de parcours du son, chaque fois de manière successive, sur un haut-parleur, avec un signal impulsionnel (fourni), tandis qu'en même temps on démarre un dispositif de mesure de temps (33) qui mesure le temps jusqu'à ce qu'au niveau d'un micro de mesure (29), le niveau du son dépasse un seuil prédéterminé.
  8. Installation selon la revendication 7,
    caractérisée en ce que
    le signal impulsionnel est constitué par une impulsion rectangulaire ayant une longueur au moins égale à 3 ms.
  9. Installation selon l'une quelconque des revendications 7 ou 8,
    caractérisée en ce qu'
    elle convient pour appliquer le signal impulsionnel par un filtre passe-bas (35), de préférence du troisième ordre, avec une fréquence limite de 11 kHz, et pour fournir le signal aux haut-parleurs (25, 26, 27, 28).
  10. Installation selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    les signaux audio parcourent en outre des circuits de correction de la courbe de réponse en fréquence, des moyens de mesure de la courbe de fréquence étant prévus entre les haut-parleurs et un micro de mesure, et
    le circuit de correction de la courbe de fréquence se règle suivant le résultat de la mesure, et les courbes de fréquence respectivement réglées pour les différents haut-parleurs, peuvent être enregistrées dans différentes mémoires.
EP94106301A 1993-08-13 1994-04-22 Dispositif pour la reproduction stéréophonique Expired - Lifetime EP0642292B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4327200A DE4327200A1 (de) 1993-08-13 1993-08-13 Einrichtung zur stereophonen Wiedergabe
DE4327200 1993-08-13

Publications (3)

Publication Number Publication Date
EP0642292A2 EP0642292A2 (fr) 1995-03-08
EP0642292A3 EP0642292A3 (fr) 1995-10-25
EP0642292B1 true EP0642292B1 (fr) 2001-07-18

Family

ID=6495097

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94106301A Expired - Lifetime EP0642292B1 (fr) 1993-08-13 1994-04-22 Dispositif pour la reproduction stéréophonique

Country Status (5)

Country Link
EP (1) EP0642292B1 (fr)
JP (1) JP3677059B2 (fr)
DE (2) DE4327200A1 (fr)
ES (1) ES2160603T3 (fr)
PT (1) PT642292E (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19580412C1 (de) * 1994-04-30 1998-10-22 Deutsch Zentr Luft & Raumfahrt Verfahren und Vorrichtung zur Kompensation akustischer Verfälschungen infolge der Raumakustik bei der Tonwiedergabe durch elektro-akustische Wiedergabegeräte
JP2000341800A (ja) * 1999-05-27 2000-12-08 Fujitsu Ten Ltd 車室内音響システム
JP2002330500A (ja) * 2001-04-27 2002-11-15 Pioneer Electronic Corp 自動音場補正装置及びそのためのコンピュータプログラム
JP2004212876A (ja) * 2003-01-08 2004-07-29 Pioneer Electronic Corp オーディオ装置
JP4283645B2 (ja) 2003-11-19 2009-06-24 パイオニア株式会社 信号遅延時間測定装置及びそのためのコンピュータプログラム
DE10354492A1 (de) * 2003-11-21 2005-06-09 Volkswagen Ag Einstelleinrichtung für eine Lautsprecheranlage in einem Fahrzeug sowie entsprechendes Einstellverfahren
JP2005341384A (ja) 2004-05-28 2005-12-08 Sony Corp 音場補正装置、音場補正方法
JP4347153B2 (ja) * 2004-07-16 2009-10-21 三菱電機株式会社 音響特性調整装置
DE102005008369A1 (de) * 2005-02-23 2006-09-07 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zum Simulieren eines Wellenfeldsynthese-Systems
JP4507951B2 (ja) * 2005-03-31 2010-07-21 ヤマハ株式会社 オーディオ装置
JP4928967B2 (ja) * 2007-02-02 2012-05-09 パイオニア株式会社 音響装置、その方法、そのプログラム及びその記録媒体
JP4518142B2 (ja) * 2007-12-25 2010-08-04 ソニー株式会社 音場補正装置、音場補正方法
WO2009107202A1 (fr) * 2008-02-26 2009-09-03 パイオニア株式会社 Dispositif et procédé de traitement de signal acoustique
JPWO2009107227A1 (ja) * 2008-02-29 2011-06-30 パイオニア株式会社 音響信号処理装置及び音響信号処理方法
PL2308244T3 (pl) * 2008-07-28 2012-10-31 Gibson Innovations Belgium Nv System akustyczny i sposób jego działania
JP5304923B1 (ja) * 2012-05-10 2013-10-02 オンキヨー株式会社 音声処理装置
DE102017209654A1 (de) * 2017-06-08 2018-12-13 Continental Automotive Gmbh Schallausgabevorrichtung, Kraftfahrzeug und Verfahren zum Betreiben einer Schallausgabevorrichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5645360B2 (fr) * 1973-12-27 1981-10-26
DE3415646A1 (de) * 1984-04-27 1985-10-31 Standard Elektrik Lorenz Ag Fernbedienbare anordnung zur einstellung der balance im tonuebertragungsteil einer anordnung zur wiedergabe eines stereophonen tonereignisses
US5109415A (en) * 1988-08-30 1992-04-28 Nec Corporation Audio signal processing system performing balance control in both amplitude and phase of audio signal
JP2708105B2 (ja) * 1989-04-26 1998-02-04 富士通テン 株式会社 車載用音響再生装置
DE4125893A1 (de) * 1990-08-03 1992-03-12 Koenig Florian Aufbereitung der wiedergabeakustik in kraftfahrzeuginnenraeumen
DE4105304A1 (de) 1991-02-20 1992-08-27 Nokia Unterhaltungselektronik Tonwiedergabeanordnung fuer eine tonwiedergabe mit eim raumklangeffekt
KR930011742B1 (ko) * 1991-07-23 1993-12-18 삼성전자 주식회사 청취공간 상태에 따른 재생 음성신호의 주파수 특성 보정장치
DE4302725A1 (en) * 1993-02-01 1993-06-24 Michael Wannke Balance regulation circuit for multichannel audio amplifier - adjusts ratio between loudspeaker volumes in dependence on relative position of listener to each loudspeaker

Also Published As

Publication number Publication date
DE4327200A1 (de) 1995-02-23
ES2160603T3 (es) 2001-11-16
EP0642292A2 (fr) 1995-03-08
DE59409802D1 (de) 2001-08-23
JPH0787598A (ja) 1995-03-31
JP3677059B2 (ja) 2005-07-27
PT642292E (pt) 2002-01-30
EP0642292A3 (fr) 1995-10-25

Similar Documents

Publication Publication Date Title
EP0642292B1 (fr) Dispositif pour la reproduction stéréophonique
EP1013141B1 (fr) Procede et dispositif pour restituer un signal acoustique stereophonique
DE4134130C2 (de) Vorrichtung zum Aufweiten und Ausbalancieren von Schallfeldern
DE60036832T2 (de) Tonwiedergabevorrichtung für ein Fahrzeug
DE60127200T2 (de) Automatisches Schallfeld-Korrektursystem
DE4328620C1 (de) Verfahren zur Simulation eines Raum- und/oder Klangeindrucks
DE10144623A1 (de) Audiowiedergabegerät für Kraftfahrzeug
KR20080095805A (ko) 사운드 동조 방법
DE4013398A1 (de) Mobile schallwiedergabevorrichtung
DE60125258T2 (de) Schallfeld-korrekturverfahren in einem Audiosystem
DE3619031A1 (de) Mehrkanal-wiedergabesystem
DE102006036319A1 (de) Vorrichtung und Verfahren zum Messen des Schallfelds
EP0753936B1 (fr) Circuit de transmission de signaux audio
DE60125259T2 (de) Schallfeld-korrekturverfahren in einem Audiosystem
DE1148269B (de) Schaltungsanordnung zur Schallaufnahme und/oder Schallwiedergabe mit zwei Wiedergabekanaelen und Verfahren zur stereophonischen Schallaufzeichnung
DE102009022685A1 (de) Audiosystem und Verfahren zur Beschallung von Insassen eines Fahrzeugs
DE19580412C1 (de) Verfahren und Vorrichtung zur Kompensation akustischer Verfälschungen infolge der Raumakustik bei der Tonwiedergabe durch elektro-akustische Wiedergabegeräte
DE2716564B2 (de) Anordnung zum Steuern des Lautstärkepegels und/oder der Entzerrung einer Tonwiedergabeeinrichtung in einem Rundfunkoder Fernsehempfänger
EP2416593A1 (fr) Procédé de communication à l'intérieur d'une pièce
EP1238567B1 (fr) Procede destine a fixer la position hi-fi d'un systeme audio
EP0972340B1 (fr) Procede de commande automatique du volume dans une installation de reproduction de signaux audio, et systeme requis a cet effet
DE10044366A1 (de) Audiosystem mit Sitzbesetzungssensoren
DE102012014310A1 (de) Verfahren und Vorrichtung zur Einstellung der Lautheit eines Audiosignals
DE3338413A1 (de) Schaltungsanordnung zum selbsttaetigen anpassen der lautstaerke eines lautsprechers an einen am lautsprecherort herrschenden stoergeraeuschpegel
DE19536671C1 (de) Anordnung zur Wiedergabe mehrerer akustischer Signalquellen in einem abgeschlossenem Raum

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE ES FR GB IT PT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE ES FR GB IT PT

17P Request for examination filed

Effective date: 19960425

17Q First examination report despatched

Effective date: 19990506

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT PT

REF Corresponds to:

Ref document number: 59409802

Country of ref document: DE

Date of ref document: 20010823

ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN P. & C. S.N.C.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20010925

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2160603

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20011018

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Opponent name: KONINKLIJKE PHILIPS ELECTRONICS N.V.

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20100324

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20100408

Year of fee payment: 17

Ref country code: ES

Payment date: 20100423

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20110427

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20110427

Year of fee payment: 18

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20111024

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20110422

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111024

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110422

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20120604

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110423

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20121228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120430

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120422

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20130627

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59409802

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20140423