EP0509195B1 - Système de sonorisation d'une voiture - Google Patents

Système de sonorisation d'une voiture Download PDF

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Publication number
EP0509195B1
EP0509195B1 EP92101688A EP92101688A EP0509195B1 EP 0509195 B1 EP0509195 B1 EP 0509195B1 EP 92101688 A EP92101688 A EP 92101688A EP 92101688 A EP92101688 A EP 92101688A EP 0509195 B1 EP0509195 B1 EP 0509195B1
Authority
EP
European Patent Office
Prior art keywords
sound
loudspeakers
area
seats
delay
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
EP92101688A
Other languages
German (de)
English (en)
Other versions
EP0509195A2 (fr
EP0509195A3 (en
Inventor
Hans Dr. Schultes
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.)
Nokia Deutschland GmbH
Original Assignee
Nokia Deutschland 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 Nokia Deutschland GmbH filed Critical Nokia Deutschland GmbH
Publication of EP0509195A2 publication Critical patent/EP0509195A2/fr
Publication of EP0509195A3 publication Critical patent/EP0509195A3/de
Application granted granted Critical
Publication of EP0509195B1 publication Critical patent/EP0509195B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 
    • H04S5/02—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation  of the pseudo four-channel type, e.g. in which rear channel signals are derived from two-channel stereo signals
    • 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

Definitions

  • the invention relates to a sound system for a passenger car according to the preamble of claim 1.
  • a stereophonic reproduction system for passenger compartments of motor vehicles with several loudspeakers is known from the document AT-B-379 275.
  • At least two spaced-apart front loudspeakers are provided for the front seats, one of which serves to reproduce the left signal and the other to reproduce the right signal.
  • a third front speaker is located approximately in the middle of the car, which is fed with a sum signal from the right and left channels.
  • loudspeakers which are fed with an electrical difference signal which is formed from the signals of the right and left channel.
  • the rear speakers are used to improve the spatial sound impression electronic delay units, e.g. B. bucket chain circuits upstream.
  • the delay times are chosen so that the localization of the sound sources in the rear with the difference signals compared to the direct sound from the front speakers is apparently offset by 1.7 m to 7 m in depth.
  • the reproduction of the low frequencies can be emitted either only from the front side loudspeakers, from the front middle loudspeaker or from a further middle rear loudspeaker.
  • the emission of the low frequencies from the two rear speakers for the differential signal is disadvantageous. In this way, this known solution requires a great deal of effort in order to achieve sufficient streophonic sound with a complete signal in all places in the motor vehicle.
  • the invention is therefore based on the object to set up a sound system according to the aforementioned principle so that the seats in the back seat of a car are not excessively loud when the sound of the front seats of the car is set to a comfortable volume for a person sitting there.
  • the invention is based on the finding of the inventor that when the sound signals for sound reproduction in the area of the front seats of the passenger car are delayed by a certain amount of time, which is not yet perceptibly changing, compared to the corresponding sound signals reproduced by the loudspeakers in the area of the rear seats the level of sound radiation from the rear speakers can be reduced significantly, namely by about half. As a result, the listening experience in the rear seats also reaches a comfortable area for the people sitting there, without the hearing experience in the area of the front seats being reduced.
  • These significant advantages achieved with the delay measures according to the invention require only an insignificant additional outlay in the sound system.
  • a delay in the sound signals in the area of the front seats is required for a period of 3 to 15 milliseconds. In this time range of the delay, the greatest reduction in the sound radiation of the rear speakers can be set without reducing the sound reproduction.
  • the outline 1 schematically denotes the outline of a car, which includes the front seats 2 and 3 for the driver of the car and the passenger and a rear seat 4.
  • a sound system 5 is shown schematically with its essential circuit blocks.
  • This sound system contains a sound reproduction device 6 as a sound source, to whose sound signal outputs 7R and 7L sound transmission lines 8 to 11 are connected to two loudspeakers 12 and 13 arranged in the area of the front seats and to two loudspeaker groups 14 and 15 arranged in the area of the rear seat 4.
  • the sound reproduction device 6 can contain a tuner, not shown, which receives programs from a station to which the tuner is tuned and transmits them to the sound transmission lines.
  • a cassette recorder 16 is also connected to the sound reproduction device 6, and the reproduced programs thereof can also be transmitted to the sound transmission lines 8 to 11.
  • the sound transmission lines 9 and 11 to the loudspeakers 12 and 13 in the area of the front seats 2 and 3 each contain a sound amplifier 17 connected upstream of the loudspeaker and a delay arrangement 18 in the course of their line.
  • a sound amplifier 19 is switched on, the gain factor of which is adjustable.
  • the volume of the sound reproduction, in particular at the driver's seat 2 can be adjusted to a volume desired by the driver of the car by means of a volume control 20.
  • the delay time Tv of the delay arrangements 18 is, for example, on an adjusting device 21
  • Time amounts Tv of the audio signal delay can be set from 3 to 8 milliseconds.
  • the delay arrangements 18 are set to such a time amount of the delay of the sound signals for the area of the front seats that the level of the radiation of the sound signals for the area of the rear seat 4 can be set to the lowest possible amount without the sound image of the sound reproduction in the interior of the car is diminished.
  • a level can be set on the sound amplifiers 19 in the sound transmission lines 8 and 10 to the rear loudspeaker groups 14 and 15, which level is, for example, 10 to 15 dB below the output level of the amplifiers 17 in the sound transmission lines 9 and 11 to the loudspeakers 12 and 13 lies in the area of the front seats 2 and 3.
  • the amplification of the sound amplifiers 19 in the transmission channels to the loudspeaker groups 14 and 15 in the area of the rear seat are set in the aforementioned case on the actuating devices 22 such that the level of sound radiation from the loudspeaker groups 14 and 15 in the area of the rear seat is a for the people in the back seat
  • pleasant sound results when the driver of the car in the driver's seat 2 adjusts himself to a comfortable volume of sound reproduction in the car.
  • a car equipped with such a sound system if the sound system is set accordingly, receives a balanced sound reproduction of a sound signal on all seats.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Stereophonic System (AREA)
  • Stereophonic Arrangements (AREA)
  • Circuits Of Receivers In General (AREA)
  • Mobile Radio Communication Systems (AREA)

Claims (2)

  1. Dispositif de sonorisation (5) pour un véhicule de tourisme, comportant :
    - des haut-parleurs (12, 13) disposés au voisinage des places avant (2, 3) du véhicule de tourisme,
    - des haut-parleurs (14, 15) disposés au voisinage des places arrière (4) du véhicule de tourisme et
    - comme source sonore, un appareil (6) de restitution sonore qui alimente les haut-parleurs (12, 13, 14, 15) en signaux sonores et aux deux sorties (7R, 7L) de signaux sonores duquel sont reliées des lignes de transmission sonore (8, 11) vers les haut-parleurs (12, 13, 14, 15) disposés au voisinage des places avant et des places arrière,
    dispositif dans le cas duquel des signaux sonores, soit de la sortie de droite, soit de la sortie de gauche (7R, 7L) de signaux sonores sont envoyés, à une partie des haut-parleurs, directement et, à l'autre partie, par l'intermédiaire de dispositifs (18) de retardement des signaux, caractérisé par le fait que sur les lignes (9, 11) de transmission des signaux sonores vers les haut-parleurs (12, 13) disposés au voisinage des places avant (2, 3) est respectivement mis en circuit un des dispositifs (18) de retardement des signaux, qui retarde les signaux sonores prévus pour restitution au voisinage des places avant (2, 3) du véhicule de tourisme d'une temporisation (Tv) de 3 à 15 ms par rapport aux signaux sonores correspondants, directement reproduits par les haut-parleurs (14, 15) au voisinage des places arrière (4).
  2. Dispositif de sonorisation selon la revendication 1, caractérisé par le fait que le dispositif (18) de retardement des signaux peut être réglé et/ou mis hors circuit.
EP92101688A 1991-02-20 1992-02-01 Système de sonorisation d'une voiture Expired - Lifetime EP0509195B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4105303 1991-02-20
DE4105303A DE4105303A1 (de) 1991-02-20 1991-02-20 Beschallungsanordnung eines pkw

Publications (3)

Publication Number Publication Date
EP0509195A2 EP0509195A2 (fr) 1992-10-21
EP0509195A3 EP0509195A3 (en) 1993-02-03
EP0509195B1 true EP0509195B1 (fr) 1994-12-21

Family

ID=6425496

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92101688A Expired - Lifetime EP0509195B1 (fr) 1991-02-20 1992-02-01 Système de sonorisation d'une voiture

Country Status (3)

Country Link
EP (1) EP0509195B1 (fr)
AT (1) ATE116090T1 (fr)
DE (2) DE4105303A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4447269C1 (de) * 1994-12-30 1996-02-01 Stefan Dipl Ing Richt Verfahren und Anordnung zur Aufteilung eines Frequenzgemisches auf mehrere Teilfrequenzbereiche, insbesondere für Mehrweglautsprecher mit verbessertem Phasenverhalten
JP6984559B2 (ja) * 2018-08-02 2021-12-22 日本電信電話株式会社 集音拡声装置、その方法、およびプログラム

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH620036A5 (en) * 1978-01-26 1980-10-31 Bbc Brown Boveri & Cie Liquid-crystal display device and use of the device as an oscillograph
DE2937011A1 (de) * 1979-09-13 1981-04-02 Blaupunkt-Werke Gmbh, 3200 Hildesheim Schaltungsanordnung fuer eine gruppe von lautsprecher-einheiten
DD145985A1 (de) * 1979-10-05 1981-01-14 Frank Steffen Anordnung zur oertlich veraenderli hen signalverteilung ueber eine grosslautsprecheranlage
AT379275B (de) * 1982-04-20 1985-12-10 Neutrik Ag Stereophone wiedergabeanlage in fahrgastraeumen von kraftfahrzeugen
JPS61210800A (ja) * 1985-03-14 1986-09-18 Nissan Motor Co Ltd 音響再生装置
US4764960A (en) * 1986-07-18 1988-08-16 Nippon Telegraph And Telephone Corporation Stereo reproduction system

Also Published As

Publication number Publication date
DE4105303A1 (de) 1992-08-27
DE59201002D1 (de) 1995-02-02
EP0509195A2 (fr) 1992-10-21
EP0509195A3 (en) 1993-02-03
ATE116090T1 (de) 1995-01-15

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