EP0504562B1 - Sound reproduction system for sound reproduction with spatial sound effect - Google Patents
Sound reproduction system for sound reproduction with spatial sound effect Download PDFInfo
- Publication number
- EP0504562B1 EP0504562B1 EP92101687A EP92101687A EP0504562B1 EP 0504562 B1 EP0504562 B1 EP 0504562B1 EP 92101687 A EP92101687 A EP 92101687A EP 92101687 A EP92101687 A EP 92101687A EP 0504562 B1 EP0504562 B1 EP 0504562B1
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- European Patent Office
- Prior art keywords
- sound
- sound reproduction
- loudspeakers
- spatial
- delay
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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
- H04R5/00—Stereophonic arrangements
- H04R5/02—Spatial or constructional arrangements of loudspeakers
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- 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
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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
- 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 reproduction arrangement for a sound reproduction with a spatial sound effect according to the preamble of claim 1 and is based on AT-B-379 275.
- the listener is to be given the reproduction of a sound signal with the impression of a certain spatiality of the sound event in a space limited on all sides.
- the listener gets the best hearing impression both in the sound image and in the spatial impression when the sound event emitted by the various loudspeakers arrives simultaneously at the location, the listening location, at which the listener is located.
- sound reproduction arrangements of this type contain devices with which the electrical sound signals transmitted to the loudspeakers are so electrically or acoustically delayed that they arrive as sound signals at the particular listening location at the same time.
- the sound image is more or less distorted at the listening location as a result of interference with disturbing reflections and standing acoustic waves on and between the boundary surfaces of the room.
- more and more demands are being made on the quality of sound reproduction in motor vehicle sound reproduction arrangements.
- a stereophonic reproduction system for passenger compartments of motor vehicles with several loudspeakers and electronic delay units is known. At least two front loudspeakers spaced apart from one another are provided for the front seats, one of which serves to reproduce the left signal and the other to reproduce the right signal. Between the two front speakers, 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. In the rear area of the passenger compartment there are loudspeakers which are fed with a difference signal which is formed from the signals of the right and left channel. To improve the spatial sound impression, the rear speakers for the differential signal electronic delay units, for. B. bucket chain circuits upstream.
- the delay times are selected so that the localization of the sound sources 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 description expressly points out that the reproduction of the low frequencies either only from the front side speakers, from the front center speaker, or from another center rear speaker.
- 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 very large amount of loudspeakers in order to achieve a stereophonic sound system with a complete signal that is balanced in the frequency response in the motor vehicle.
- the invention has for its object to design a sound reproduction arrangement so that the quality of the sound reproduction, in particular the frequency-dependent sound level curve at the listening location, is significantly increased with little complex means.
- the outline 1 in Fig. 1 represents the outline in the diagram of a car, the passenger compartment 2 of which can be sounded through loudspeakers 11, 12, 21 and 22 of a sound reproduction arrangement 3.
- the loudspeakers are connected to the signal output 4 of associated sound signal delay devices 13, 14, 23 and 24 of equalizers 15, 16, 25 and 26.
- the two equalizers are fed by the sound signal outputs 19 and 29 of a sound reproduction device 6.
- the sound reproduction device 6 contains a tuner (not shown in more detail) which transmits programs received from a transmitter as a sound signal via the sound reproduction device and the equalizers 15 and 25 to the loudspeaker channels 17 and 18 and 27 and 28 of the loudspeakers 11, 12, 21 and 22 .
- a cassette recorder 5 is connected to the sound reproduction device 6, the sound events sampled from the tape can be transmitted to the loudspeaker channels instead of the programs received by the tuner.
- the loudspeakers 11 and 21 are arranged in the area of the front seats 7 and 8 of the car and the loudspeakers 12 and 22 are arranged in the area of the rear seat 9 in the passenger compartment 2 of the car.
- the delay time T11, T12, T21 and T22 of the sound signal delay devices 13, 14, 23 and 24 is set for the sound signals generated by the sound reproduction device such that the sound signals S11, S12, S21 and S22 emitted by the associated loudspeakers 11, 12, 21 and 22 Arrive simultaneously at a specific listening location 10, in the exemplary embodiment shown in the region of the head of the driver of the motor vehicle sitting on the left front seat 8 of the motor vehicle.
- This setting of the delay times T11, T12, T21 and T22 of the sound signal delay devices of the sound display device 3 for positioning the of the Loudspeakers 11, 12, 21 and 22 emitted sound signals S11, S12, S21 and S22 on the specific listening location 10 is the basic setting of the delay times for the specific listening location 10.
- This basic setting is shown in the diagrams a) to d) of FIG. 3 by the bars Marked 31.1 to 31.4.
- Diagram a) shows the delay times for loudspeaker channel 27 in bar form
- diagram b) the delay times for loudspeaker channel 17
- diagram c) the delay times for loudspeaker channel 28
- diagram d) the delay times for loudspeaker channel 18
- Diagram a) of FIG. 2 shows curve 32 of the frequency response of the sound level of a sound event arriving at listening location 10 for the basic setting of sound signal delay devices 13, 14, 23 and 24 shown in FIG. 3 by bars 31.1 to 31.4.
- the reflections and standing waves that arise during sound radiation produce a large number of dips 33 and dips 34 in the frequency response of the level curve, which significantly impair the quality of the sound image of the transmitted sound event at the listening location 10.
- the sound signal delay devices 13, 14, 23 and 24 contain additional setting devices 20, on which the delay time for the positioning of the listening location by a certain distance A11, A12, A21, A22 from the basic setting within the permissible, by the bars 35.1 to 35.4 of the bar graphs in FIG. 3 shown fluctuation ranges can be changed.
- the respective storage A11 to A22 of the delay time of the individual sound signal delay devices can be adjusted from the delay time of the basic setting in such a way that the individual sound signals S11, S12, S21 and S22 emitted by the loudspeakers 11, 12, 21 and 22 are shifted in phase to the listening location 10 in such a way that a smooth curve 36 of the frequency response of the sound level is produced at the listening location 10, as shown in diagram b) of FIG. 2 by the smoothed frequency response curve 36 of the sound level at the listening location 10.
- the delay times of the audio signal delay devices set in this way to smooth the frequency response curve 36 of the sound level at the listening location 10 are shown schematically in the bar diagrams a) to d) of FIG. 3 by the bars 38.1 to 38.4 and the associated shelves A11 to A22 by the bars 37.1 to 37.4 shown.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Stereophonic System (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Headphones And Earphones (AREA)
Abstract
Description
Die Erfindung betrifft eine Tonwiedergabeanordnung für eine Tonwiedergabe mit einem Raumklangeffekt gemäß dem Oberbegriff des Anspruches 1 und geht aus von der AT-B-379 275.The invention relates to a sound reproduction arrangement for a sound reproduction with a spatial sound effect according to the preamble of claim 1 and is based on AT-B-379 275.
Mit einer derartigen Tonwiedergabeanordnung soll dem Hörer in einem allseitig begrenzten Raum die Wiedergabe eines Tonsignales mit dem Eindruck einer gewissen Räumlichkeit des Tonereignisses vermittelt werden. Dazu ist eine räumliche Anordnung der Lautsprecher bezüglich des Hörers erforderlich, durch die eine Schallabstrahlung von mehreren Seiten her auf den Hörer einwirkt. Den besten Höreindruck sowohl im Klangbild als auch im Raumeindruck erhält der Hörer, wenn das von den verschiedenen Lautsprechern abgestrahlte Tonereignis gleichzeitig an dem Ort, dem Hörort, eintrifft, an dem sich der Hörer befindet. Deshalb enthalten derartige Tonwiedergabeanordnungen Einrichtungen, mit denen die zu den Lautsprechern übertragenen elektrischen Tonsignale so elektrisch oder akustisch verzögert werden, daß sie als Schallsignale an dem bestimmten Hörort gleichzeitig ankommen.With such a sound reproduction arrangement, the listener is to be given the reproduction of a sound signal with the impression of a certain spatiality of the sound event in a space limited on all sides. This requires a spatial arrangement of the loudspeakers with respect to the listener, through which sound radiation acts on the listener from several sides. The listener gets the best hearing impression both in the sound image and in the spatial impression when the sound event emitted by the various loudspeakers arrives simultaneously at the location, the listening location, at which the listener is located. For this reason, sound reproduction arrangements of this type contain devices with which the electrical sound signals transmitted to the loudspeakers are so electrically or acoustically delayed that they arrive as sound signals at the particular listening location at the same time.
Dennoch tritt am Hörort mehr oder weniger eine Verfälschung des Klangbildes ein infolge von Interferenzen mit störenden Reflexionen und stehenden akustischen Wellen an und zwischen den Begrenzungsflächen des Raumes. Diese Störungen treten umso störender auf, je kleiner der Raum ist, in dem sich der Hörort befindet. Dies gilt insbesondere für den Fahrgastraum eines PKWs. Immer mehr werden jedoch gerade an die Qualität der Tonwiedergabe in Kraftfahrzeuge installierter Tonwiedergabeanordnungen stets wachsende Anforderungen gestellt.Nevertheless, the sound image is more or less distorted at the listening location as a result of interference with disturbing reflections and standing acoustic waves on and between the boundary surfaces of the room. The smaller the room in which the listening location is located, the more disturbing these disturbances are. This applies in particular to the passenger compartment of a car. However, more and more demands are being made on the quality of sound reproduction in motor vehicle sound reproduction arrangements.
Aus der Druckschrift AT-B-379 275 ist eine stereophone Wiedergabeanlage für Fahrgasträume von Kraftfahrzeugen mit mehreren Lautsprechern und elektronischen Verzögerungseinheiten bekannt. Für die Vordersitze sind mindestens zwei voneinander distanzierte Frontlautsprecher vorgesehen, von welchen der eine Lautsprecher zum Wiedergeben des linken Signals und der andere zum Wiedergeben des rechten Signals dient. Zwischen den beiden Frontlautsprechern ist etwa in der Mitte des Wagens ein dritter Frontlautsprecher angeordnet, der mit einem Summensignal aus dem rechten und linken Kanal gespeist wird. Im Heckbereich des Fahrgastraumes sind Lautsprecher angeordnet, die mit einem Differenzsignal, das aus den Signalen des rechten und linken Kanals gebildet wird, gespeist werden. Zum Verbessern des räumlichen Schalleindrucks werden den Hecklautsprechern für das Differenzsignal elektronische Verzögerungseinheiten, z. B. Eimerkettenschaltungen, vorgeschaltet. Die Verzögerungszeiten sind so gewählt, daß die Lokalisation der Schallquellen mit den Differenzsignalen gegenüber dem Direktschall von den Frontlautsprecher scheinbar um 1,7 m bis 7 m in die Tiefe versetzt wird.
In der Beschreibung wird ausdrücklich darauf hingewiesen, daß die Wiedergabe der tiefen Frequenzen entweder nur von den vorderen seitlichen Lautsprechern, vom vorderen mittleren Lautsprecher oder von einem weiteren mittleren rückwärtigen Lautsprecher abgestrahlt werden kann. Die Abstrahlung der tiefen Frequenzen von den zwei seitlichen Hecklautsprechern für das Differenzsignal sei unvorteilhaft. Auf diese Weise benötigt diese bekannte Lösung einen sehr großen Aufwand an Lautsprechern, um im Kraftfahrzeug eine im Frequenzgang ausgewogene stereophone Beschallung mit einem vollständigen Signal zu erzielen.From the document AT-B-379 275 a stereophonic reproduction system for passenger compartments of motor vehicles with several loudspeakers and electronic delay units is known. At least two front loudspeakers spaced apart from one another are provided for the front seats, one of which serves to reproduce the left signal and the other to reproduce the right signal. Between the two front speakers, 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. In the rear area of the passenger compartment there are loudspeakers which are fed with a difference signal which is formed from the signals of the right and left channel. To improve the spatial sound impression, the rear speakers for the differential signal electronic delay units, for. B. bucket chain circuits upstream. The delay times are selected so that the localization of the sound sources 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 description expressly points out that the reproduction of the low frequencies either only from the front side speakers, from the front center speaker, or from another center rear speaker. 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 very large amount of loudspeakers in order to achieve a stereophonic sound system with a complete signal that is balanced in the frequency response in the motor vehicle.
Bei der bekannten Lösung ist somit von Nachteil, daß die Wiedergabe wichtiger Schallkomponenten über eine Vielzahl von örtlich im Fahrgastraum verteilten Lautsprechern erfolgt, die verschiedene Signalbereiche abstrahlen. Eine derartige Aufteilung der Schallquellen erfordert einen hohen zusätzlichen Filteraufwand, um zu verhindern, daß im Fahrgastraum Signalauslöschungen durch Interferenzen auftreten.In the known solution, it is therefore disadvantageous that important sound components are reproduced via a large number of loudspeakers which are distributed locally in the passenger compartment and emit different signal areas. Such a division of the sound sources requires a high level of additional filtering in order to prevent signal cancellations from interference occurring in the passenger compartment.
Ausgehend vom dargestellten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine Tonwiedergabeanordnung so auszugestalten, daß die Qualität der Tonwiedergabe, insbesondere der frequenzabhängige Schallpegelverlauf am Hörort, mit wenig aufwendigen Mitteln wesentlich erhöht wird.Starting from the prior art shown, the invention has for its object to design a sound reproduction arrangement so that the quality of the sound reproduction, in particular the frequency-dependent sound level curve at the listening location, is significantly increased with little complex means.
Diese Aufgabe wird nach der Erfindung durch die im Kennzeichen des Anspruches 1 angegebenen Merkmale gelöst.This object is achieved according to the invention by the features specified in the characterizing part of claim 1.
Es ist das Verdienst des Erfinders, erkannt zu haben, daß einerseits zur Einstellung der Verzögerungszeiten für die Definition eines bestimmten Hörortes innerhalb eines allseitig begrenzten Raumes keine hohen Anforderungen an die Genauigkeit dieser die Grundeinstellung bildenden Verzögerungszeiten für die Tonsignale erforderlich ist und daß andererseits bestimmte Ablagen von dieser Grundeinstellung, die nicht über die zulässige Toleranzbreite der Grundeinstellung hinausgehen, in ihrem Zusammenwirken dazu führen, den frequenzabhängigen Schallpegelverlauf am Hörort des von den Lautsprechern der Anordnung abgestrahlten Schallfeldes von interferenzabhängigen Aus- oder Einbrüchen weitgehend zu befreien und einen hinreichend glatten Kurvenverlauf zu erzielen. Für die Einstellung derartiger Ablagen der Verzögerungszeit von einer Grundeinstellung ist es in den meisten Fällen lediglich erforderlich, vorhandene einstellbare Tonsignalverzögerungseinrichtungen zusätzlich derart auszugestalten, daß sie in einem engen Zeitverzögerungsbereich von etwa +/- 1,5 ms feiner oder in kleinern Stufen einstellbar sind. Hierbei ist es gleichgültig, ob die Tonsignalverzögerungseinrichtungen Bestandteile eines Equalizers sind oder getrennt in den Lautsprecherkanälen angeordnet sind. Die Maßnahmen nach der Erfindung führen auch dazu, daß die Anzahl der Bänder der Equalizer wesentlich herabgesetzt werden kann, ohne daß dadurch die Qualität des Equalizers wesentlich gemindert wird.It is to the credit of the inventor that he recognized that, on the one hand, the setting of the delay times for the definition of a specific listening location within a space that is limited on all sides does not have any high requirements the accuracy of these delay times forming the basic setting is required for the audio signals and that, on the other hand, certain deposits of this basic setting which do not go beyond the permissible tolerance range of the basic setting, in their interaction, lead to the frequency-dependent sound level curve at the listening location of the sound field emitted by the loudspeakers of the arrangement to be largely freed from interference-dependent breakouts or dips and to achieve a sufficiently smooth curve. In most cases, it is only necessary to set existing stores of the delay time from a basic setting additionally adjustable tone signal delay devices in such a way that they can be adjusted more finely or in smaller steps in a narrow time delay range of approximately +/- 1.5 ms. It does not matter whether the sound signal delay devices are part of an equalizer or are arranged separately in the loudspeaker channels. The measures according to the invention also result in the number of bands of the equalizer being able to be significantly reduced without the quality of the equalizer being significantly reduced thereby.
Die Unteransprüche kennzeichnen vorteilhafte Ausgestaltungen der Erfindung.The subclaims characterize advantageous embodiments of the invention.
Die Erfindung wird nachfolgend anhand eines vorteilhaften Ausführungsbeispieles näher erläutert. Die zugehörigen Zeichnungen zeigen
- Fig. 1
- eine schematische Darstellung eines PKWs mit einer Tonwiedergabeanordnung für eine Tonwiedergabe mit einem Raumklangeffekt;
- Fig. 2
- zwei Diagramme (a)) und (b)) über den frequenzabhängigen Schallpegelverlauf am Hörort einer Tonsignalwiedergabe ohne a) und mit b) durch Einstellung einer Verzögerungsablage geglättetem Pegelverlauf;
- Fig. 3
- Diagramme a) bis d) mit den Verzögerungszeiten der den zugehörigen Lautsprechern zugeleiteten Tonsignale.
- Fig. 1
- a schematic representation of a car with a sound reproduction arrangement for a sound reproduction with a surround effect;
- Fig. 2
- two diagrams (a)) and (b)) about the frequency-dependent sound level curve at the listening location of a sound signal reproduction without a) and with b) a smoothed level curve by setting a delay storage;
- Fig. 3
- Diagrams a) to d) with the delay times of the audio signals fed to the associated loudspeakers.
Die Umrißlinie 1 in Fig. 1 stellt im Schema die Umrißlinie eines PKWs dar, dessen Fahrgastraum 2 durch Lautsprecher 11, 12, 21 und 22 einer Tonwiedergabeanordnung 3 beschallt werden kann. Die Lautsprecher sind an den Signalausgang 4 ihnen zugehöriger Tonsignalverzögerungseinrichtungen 13, 14, 23 und 24 zugehöriger Equalizer 15, 16, 25 und 26 angeschlossen. Die beiden Equalizer werden von den Tonsignalausgängen 19 und 29 eines Tonwiedergabegerätes 6 gespeist. Das Tonwiedergabegerät 6 enthält im dargestellten Ausführungsbeispiel einen nicht näher dargestellten Tuner, der von einem Sender empfangene Sendungen als Tonsignal über das Tonwiedergabegerät und die Equalizer 15 und 25 auf die Lautsprecherkanäle 17 und 18 sowie 27 und 28 der Lautsprecher 11, 12, 21 und 22 überträgt. Als weitere Tonquelle ist an das Tonwiedergabegerät 6 ein Kassettenrecorder 5 angeschlossen, dessen vom Band abgetastete Tonereignisse anstelle der vom Tuner empfangenen Sendungen auf die Lautsprecherkanäle übertragen werden können.The outline 1 in Fig. 1 represents the outline in the diagram of a car, the passenger compartment 2 of which can be sounded through
Die Lautsprecher 11 und 21 sind im Bereich der Vordersitze 7 und 8 des PKWs und die Lautsprecher 12 und 22 sind im Bereich des Rücksitzes 9 im Fahrgastraum 2 des PKWs angeordnet. Die Verzögerungszeit T11, T12, T21 und T22 der Tonsignalverzögerungseinrichtungen 13, 14, 23 und 24 ist für die vom Tonwiedergabegerät erzeugten Tonsignale so eingestellt, daß die von den zugehörigen Lautsprechern 11, 12, 21 und 22 abgestrahlten Schallsignale S11, S12, S21 und S22 gleichzeitig an einem bestimmten Hörort 10 eintreffen, im dargestellten Ausführungsbeispiel im Bereich des Kopfes des auf dem linken Vordersitz 8 des Kraftfahrzeuges sitzenden Fahrers des Kraftfahrzeuges. Diese Einstellung der Verzögerungszeiten T11, T12, T21 und T22 der Tonsignalverzögerungseinrichtungen der Tonwiedergabeanordnung 3 zur Positionierung der von den Lautsprechern 11, 12, 21 und 22 abgestrahlten Schallsignale S11, S12, S21 und S22 auf den bestimmten Hörort 10 ist die Grundeinstellung der Verzögerungszeiten für den bestimmten Hörort 10. Diese Grundeinstellung ist in den Diagrammen a) bis d) der Figur 3 durch die Balken 31.1 bis 31.4 gekennzeichnet. Das Diagramm a) stellt in Balkenform die Verzögerungszeiten für den Lautsprecherkanal 27, das Diagramm b) die Verzögerungszeiten für den Lautsprecherkanal 17, das Diagramm c) die Verzögerungszeiten für den Lautsprecherkanal 28 und das Diagramm d) die Verzögerungszeiten des Lautsprecherkanales 18 schematisch dar. An die Genauigkeit der Verzögerungszeiten der in Figur 3 durch die Balken 31.1 bis 31.4 dargestellten Verzögerungszeiten der Grundeinstellung bestehen, wie festgestellt wurde, keine hohen Anforderungen. In die Balkendiagramme a) bis d) der Figur 3 ist durch einen Balken 35.1 bis 35.4 der Bereich angegeben, innerhalb dem die Verzögerungszeit der Grundeinstellung verändert werden kann, ohne daß der Raumeindruck des von den Lautsprechern 11 bis 22 an den Hörort 10 übertragenen Schallereignisses hörbar gemindert wird.The
Im Diagramm a) der Figur 2 ist die Kurve 32 des Frequenzganges des Schallpegels eines am Hörort 10 eintreffenden Schallereignisses für die in Figur 3 durch die Balken 31.1 bis 31.4 dargestellte Grundeinstellung der Tonsignalverzögerungseinrichtungen 13, 14, 23 und 24 dargestellt. Die bei der Schallabstrahlung entstehenden Reflexionen und stehenden Wellen erzeugen am Frequenzgang der Pegelkurve 32 Einbrüche 33 und Ausbrüche 34 in größerer Zahl, die die Qualität des Klangbildes des übertragenen Tonereignisses am Hörort 10 wesentlich beeinträchtigen. Die Tonsignalverzögerungseinrichtungen 13, 14, 23 und 24 enthalten zusätzliche Einstellvorrichtungen 20, an denen die Verzögerungszeit für die Positionierung des Hörortes um eine bestimmte Ablage A11, A12, A21, A22 von der Grundeinstellung innerhalb der zulässigen, durch die Balken 35.1 bis 35.4 der Balkendiagramme der Figur 3 dargestellten Schwankungsbereiche verändert werden kann. Mittels dieser Verstellvorrichtungen kann nach einem bestimmten Verfahren die jeweilige Ablage A11 bis A22 der Verzögerungszeit der einzelnen Tonsignalverzögerungseinrichtungen von der Verzögerungszeit der Grundeinstellung derart eingestellt werden, daß die einzelnen von den Lautsprechern 11, 12, 21 und 22 abgestrahlten Schallsignale S11, S12, S21 und S22 zum Hörort 10 so in der Phase verschoben sind, daß am Hörort 10 eine glatte Kurve 36 des Frequenzganges des Schallpegels entsteht, wie im Diagramm b) der Figur 2 durch die geglättete Frequenzgangkurve 36 des Schallpegels am Hörort 10 gezeigt wird. Die auf diese Weise zur Glättung der Frequenzgangkurve 36 des Schallpegels am Hörort 10 eingestellten Verzögerungszeiten der Tonsignalverzögerungseinrichtungen sind in den Balkendiagrammen a) bis d) der Figur 3 durch die Balken 38.1 bis 38.4 und die zugehörigen Ablagen A11 bis A22 durch die Balken 37.1 bis 37.4 schematisch dargestellt.Diagram a) of FIG. 2 shows
Claims (3)
- Sound reproduction arrangement for sound reproduction with a spatial effect, at least at a specified listening site in a space (2) limited on all sides,- with several loudspeaker channels (17, 18, 27, 28) and loudspeakers (11, 12, 21, 22), that are placed in an arrangement for producing the spatial effect,- and with audio signal delay devices which are arranged in the loudspeaker channels to adjust the sound reproduction at the listening site,characterised in that
the audio signal delay devices (13, 14, 23, 24) are in each case equipped with an additional adjusting device (20) for adjusting the delay time (T11, T12, T21, T22) by a deviation (All, A12, A21, A22) from the basic setting (31.1 to 31.4), that is necessary to set the sound reproduction at the listening site, in order to compensate for deviations in level (33, 34) caused by interference. - Sound reproduction arrangement according to Claim 1, characterised in that the space limited on all sides is the passenger compartment (2) of a passenger vehicle (1).
- Sound reproduction arrangement according to Claim 1 or Claim 2, characterised in that the audio signal delay devices (13, 14, 23, 24) are equalizers (15, 16, 25, 26) with an adjusting device (20) for setting the delay time for smoothing the frequency response (36) of the sound level at the listening site (10).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE4105304 | 1991-02-20 | ||
DE4105304A DE4105304A1 (en) | 1991-02-20 | 1991-02-20 | SOUND PLAYING ARRANGEMENT FOR A SOUND PLAYBACK WITH A ROOM SOUND EFFECT |
Publications (2)
Publication Number | Publication Date |
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EP0504562A1 EP0504562A1 (en) | 1992-09-23 |
EP0504562B1 true EP0504562B1 (en) | 1995-05-10 |
Family
ID=6425497
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP92101687A Expired - Lifetime EP0504562B1 (en) | 1991-02-20 | 1992-02-01 | Sound reproduction system for sound reproduction with spatial sound effect |
Country Status (3)
Country | Link |
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EP (1) | EP0504562B1 (en) |
AT (1) | ATE122526T1 (en) |
DE (2) | DE4105304A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109724811A (en) * | 2018-12-21 | 2019-05-07 | 江苏大学 | A kind of structure transmission path detection system of passenger compartment sound quality |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69415726T2 (en) * | 1993-05-31 | 1999-06-02 | Sony Corp., Tokio/Tokyo | Recording / reproducing apparatus for a disc-shaped recording medium |
DE4327200A1 (en) | 1993-08-13 | 1995-02-23 | Blaupunkt Werke Gmbh | Stereophonic playback device |
DE19580412C1 (en) * | 1994-04-30 | 1998-10-22 | Deutsch Zentr Luft & Raumfahrt | Compensating for mutual interference between loudspeakers and acoustic distortion of room |
DE102017213241A1 (en) * | 2017-08-01 | 2019-02-07 | Bayerische Motoren Werke Aktiengesellschaft | Method, device, mobile user device, computer program for controlling an audio system of a vehicle |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5811159B2 (en) * | 1979-05-18 | 1983-03-01 | 松下電器産業株式会社 | In-vehicle sound reproduction device |
AT379275B (en) * | 1982-04-20 | 1985-12-10 | Neutrik Ag | STEREOPHONE PLAYBACK IN VEHICLE ROOMS OF MOTOR VEHICLES |
EP0160431B1 (en) * | 1984-04-09 | 1990-09-19 | Pioneer Electronic Corporation | Sound field correction system |
JPS60254995A (en) * | 1984-05-31 | 1985-12-16 | Pioneer Electronic Corp | On-vehicle sound field correction system |
JPS61210800A (en) * | 1985-03-14 | 1986-09-18 | Nissan Motor Co Ltd | Sound reproducing device |
US4764960A (en) * | 1986-07-18 | 1988-08-16 | Nippon Telegraph And Telephone Corporation | Stereo reproduction system |
JP2708105B2 (en) * | 1989-04-26 | 1998-02-04 | 富士通テン 株式会社 | In-vehicle sound reproduction device |
-
1991
- 1991-02-20 DE DE4105304A patent/DE4105304A1/en not_active Withdrawn
-
1992
- 1992-02-01 DE DE59202110T patent/DE59202110D1/en not_active Expired - Lifetime
- 1992-02-01 AT AT92101687T patent/ATE122526T1/en not_active IP Right Cessation
- 1992-02-01 EP EP92101687A patent/EP0504562B1/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109724811A (en) * | 2018-12-21 | 2019-05-07 | 江苏大学 | A kind of structure transmission path detection system of passenger compartment sound quality |
Also Published As
Publication number | Publication date |
---|---|
DE59202110D1 (en) | 1995-06-14 |
ATE122526T1 (en) | 1995-05-15 |
DE4105304A1 (en) | 1992-08-27 |
EP0504562A1 (en) | 1992-09-23 |
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