EP0992976A2 - Vorrichtung zur elektroakustischen Geräuschrückführung - Google Patents
Vorrichtung zur elektroakustischen Geräuschrückführung Download PDFInfo
- Publication number
- EP0992976A2 EP0992976A2 EP99116192A EP99116192A EP0992976A2 EP 0992976 A2 EP0992976 A2 EP 0992976A2 EP 99116192 A EP99116192 A EP 99116192A EP 99116192 A EP99116192 A EP 99116192A EP 0992976 A2 EP0992976 A2 EP 0992976A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- signal processing
- processing unit
- noise
- pressure sensor
- sound pressure
- 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.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K15/00—Acoustics not otherwise provided for
- G10K15/02—Synthesis of acoustic waves
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/106—Boxes, i.e. active box covering a noise source; Enclosures
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/128—Vehicles
- G10K2210/1282—Automobiles
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/301—Computational
- G10K2210/3027—Feedforward
Definitions
- the invention relates to an electroacoustic noise feedback for a Motor vehicle according to the preamble of claim 1.
- the exhaust system and the are a source with strong load dependency Intake tract.
- An increase in the emitted sound from these excitation sources is because of the strict emission and External noise regulations are not effective. Otherwise the introduction these noise components into the interior thanks to high body insulation, those for reducing wind and rolling noise and for suppression disruptive, mechanical engine noise components required is largely prevented.
- a targeted mechanical introduction in the vehicle interior is possible in principle, but has changed the costs and the arrangement in the vehicle were found to be disadvantageous.
- the object of the invention is to provide an acoustic in a simple manner Feedback of the operating state of the engine in the interior of a Vehicle without the outside noise becoming too high or the body insulation would have to be reduced.
- An essential idea of the invention is the sound pressure in the intake or Exhaust tract record. These acoustic sources have a high one Load dependency. The recorded noises are then processed electronically and a loudspeaker system in the interior of the vehicle recorded. Even in a very simple embodiment of the invention can create a lifelike acoustic signal in the vehicle interior be transmitted. A vehicle occupant does not perceive this signal as synthesized or represented artificially.
- the sound pressure in the vicinity of the intake air opening or in the intake silencer or air filter box is preferferably, the sound pressure in the vicinity of the intake air opening or in the intake silencer or air filter box.
- the spectrum can be from a sonorous Brabbel "sound up to one Racing "sound can be varied depending on the requirement.
- the signal processing unit be designed so that in the interior of the motor vehicle recorded sound signal is changed depending on the speed to a desired level curve - for example a very even one Internal noise curve over the speed - to achieve.
- a load-dependent change in the recorded noise is also possible. All that would be required was the accelerator pedal or throttle position signal recorded by the signal processing unit and accordingly be taken into account.
- a particularly advantageous embodiment is characterized in that that a switching unit is provided with which the device can be deactivated or can be activated. You can either use the sound pressure sensor or the signal processing unit or the loudspeaker unit is switched off become. With this measure, the source of noise, such as desired, switched on or off by the vehicle operator.
- the deactivation or the activation can of course also depend on certain Driving operating conditions can be selected. For example, it is possible that the device according to the invention with an automatic transmission Manual switching mode (steptronics) only activated in manual switching mode becomes, so when a vehicle operator a more sporty driving style wishes. In normal automatic mode, the invention could Device must be deactivated, so that there is quieter acoustics. Naturally can the deactivation and activation also with one setting the engine characteristics or any other signals.
- the device according to the invention makes it particularly simple acoustic feedback with pleasant sounding sound components to create.
- the system increases especially in vehicles with high Performance improves driving safety and supports the driver acoustically.
- a device according to the invention only influences the interior noise, there is increased acoustic feedback to the vehicle occupants without that the environment is polluted.
- the invention Device only the already natural engine noise from the Intake or exhaust system imported into the interior of a vehicle, so that a natural, adaptable to the respective vehicle type Sound is achievable.
- a motor vehicle is shown schematically in plan view, which shows an engine with an intake tract 18.
- Intake tract 18 is a sound pressure sensor 12 in the form of a microphone shown, which picks up the natural engine noise in the intake area and delivers it to a signal processing unit 14 via a line.
- the signal processing unit 14 processes the signals from the sound pressure sensor 12 and outputs it to a loudspeaker unit 16, which is the one of the Signal device unit 14 converts generated signals into acoustic signals. Separate speakers or also the speakers can be used as speakers Speakers of a vehicle audio system are used.
- signal processing unit 14 filters and amplifies the signals emitted by the sound pressure sensor 12.
- FIG. 2 An example of a signal processing unit is shown in the form of a schematic Circuit diagram shown in Fig. 2.
- the signal from Sound pressure sensor 12 first passed through a high-pass filter 20 low-frequency sound components that lead to large membrane movements would eliminate.
- the signal output by the high-pass filter 20 becomes split into two branches. In a branch, the signal is replaced by a Low-pass filter 22 and then essentially to a potentiometer 26th headed, which depending on his attitude a more or less weakened Passes signal to an adder (+).
- the signal in the other branch runs to a further potentiometer 24 essentially unfiltered and therefore has broadband shares. After this Potentiometer 24 it is also fed to the adder (+). In the adder the two signals carried in the different branches are weighted added together and passed through a further low-pass filter 28, in which they are capped. After all, that's how it will be processed signals amplified in an amplifier 30 and sent to the speakers 16 delivered the vehicle. These convert the electrical generated in this way Signal into an acoustic signal, which is essentially a filtered, natural image of the noise recorded in the intake tract represents. By changing the weighting factors through adjustment the potentiometer 24 and 26 between broadband and low-pass portion can be simply adjust the sound impression. The adjustment is done with the present one Embodiment manually.
- the adjustment of the weight factors also due to the throttle valve position, the speed signal or the speed.
- the signal processing unit 14 connected to a CAN bus and still have an additional control unit that controls the Potentiometers 24 and 26 depending on the selected parameters takes over.
- the embodiment shown is also only a simple version a noise feedback device that in the intake or exhaust system recorded natural engine noise leads into the interior.
Landscapes
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
Description
- Fig. 1
- eine schematische graphische Darstellung der erfindungsgemäßen Vorrichtung in einem Kraftfahrzeug angeordnet und
- Fig. 2
- eine schematische Schaltskizze eines Ausführungsbeispiels der erfindungsgemäßen Vorrichtung.
Claims (9)
- Vorrichtung zur elektroakustischen Geräuschrückführung für ein Kraftfahrzeug (10) mit einem Schalldrucksensor (12), einer Signalverarbeitungseinheit (14), welche mit dem Schalldrucksensor (12) verbunden ist und Signale vom diesem erhält und verarbeitet, und einer Lautsprechereinheit (16) mit zumindest einem Lautsprecher, welche mit der Signalverarbeitungseinheit (14) verbunden ist, wobei der Schalldrucksensor (12) im Ansaug- (18) oder Abgastrakt des Kraftfahrzeuges (10) angeordnet ist.
- Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß als Lautsprechereinheit (10) eine Audioanlage des Kraftfahrzeuges (10) dient. - Vorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die Signalverarbeitungseinheit (14) zumindest eine Filtereinrichtung (20, 22, 28) zur Veränderung der Klangcharakteristik des vom Schalldrucksensor (12) aufgenommenen Geräusches enthält. - Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Signalverarbeitungseinheit (14) derart ausgebildet ist, um das Geräusch, insbesondere dessen Lautstärke oder dessen Frequenzgangcharakteristik, drehzahlabhängig zu verändern. - Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Signalverarbeitungseinheit (14) derart ausgebildet ist, um das Geräusch, insbesondere dessen Lautstärke oder dessen Frequenzgangcharakteristik, lastabhängig zu verändern. - Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Signalverarbeitungseinheit (14) derart ausgebildet ist, um das Geräusch, insbesondere dessen Lautstärke oder dessen Frequenzgangcharakteristik, geschwindigkeitsabhängig zu verändern. - Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß die Signalverarbeitungseinheit (14) derart ausgebildet ist, um das Geräusch, insbesondere dessen Lautstärke oder dessen Frequenzgangcharakteristik, in Abhängigkeit von der eingestellten Getriebeübersetzungsstufe oder einem Kick-Down-Betrieb zu verändern. - Vorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
daß eine Schalteinheit vorgesehen ist, mit welcher der Schalldrucksensor (12), die Signalverarbeitungseinheit (14) oder die Lautsprechereinheit (16) deaktivierbar oder aktivierbar ist. - Vorrichtung nach Anspruch 8,
dadurch gekennzeichnet,
daß die Schalteinheit auf bestimmte Fahrbetriebsbedingungen anspricht.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19845736 | 1998-10-05 | ||
DE19845736A DE19845736A1 (de) | 1998-10-05 | 1998-10-05 | Vorrichtung zur elektroakustischen Geräuschrückführung |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0992976A2 true EP0992976A2 (de) | 2000-04-12 |
EP0992976A3 EP0992976A3 (de) | 2002-12-04 |
EP0992976B1 EP0992976B1 (de) | 2005-11-23 |
Family
ID=7883402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99116192A Expired - Lifetime EP0992976B1 (de) | 1998-10-05 | 1999-08-24 | Kraftfahrzeug mit einer Vorrichtung zur elektroakustischen Geräuschrückführung |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0992976B1 (de) |
DE (2) | DE19845736A1 (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1193683A2 (de) * | 2000-09-20 | 2002-04-03 | Siemens Automotive Inc. | Steuerungmodus für aktive Geräuschdämpfung |
WO2003028007A1 (en) * | 2001-09-25 | 2003-04-03 | Siemens Vdo Automotive Inc. | Modular active noise cancellation air filter speaker and microphone assembly |
EP1524649A1 (de) * | 2003-10-15 | 2005-04-20 | Ford Global Technologies, LLC, A subsidary of Ford Motor Company | Verfahren und Vorrichtung zum Erzeugen von Motorgeräuschen eines Kraftfahrzeugs |
DE102007021880A1 (de) * | 2007-05-10 | 2008-11-13 | Ford Global Technologies, LLC, Dearborn | Verfahren zur Optimierung des Geräuschempfindens in der Fahrgastzelle eines Kraftfahrzeuges |
US8320581B2 (en) | 2010-03-03 | 2012-11-27 | Bose Corporation | Vehicle engine sound enhancement |
US9299337B2 (en) | 2011-01-11 | 2016-03-29 | Bose Corporation | Vehicle engine sound enhancement |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19945259C1 (de) | 1999-09-21 | 2001-01-11 | Bayerische Motoren Werke Ag | Vorrichtung zur elektroakustischen Geräuscherzeugung bei einem Kraftfahrzeug |
DE10140407A1 (de) * | 2001-08-17 | 2003-03-06 | Werner Baur | Vorrichtung zum Beeinflussen der Klangkulisse in einem Kraftfahrzeug |
DE10144266C1 (de) * | 2001-09-08 | 2003-04-03 | Bosch Gmbh Robert | Vorrichtung zur Seitenaufprallerkennung in einem Fahrzeug |
DE102008033414B4 (de) | 2008-07-16 | 2022-05-19 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Erzeugung von definierten Geräuschen im Fahrgastinnenraum eines Kraftfahrzeuges und Kraftfahrzeug |
DE102011102709B4 (de) | 2011-05-20 | 2020-08-06 | RocketAudio Traffic GmbH | Einrichtung zur simulierenden Erzeugung von Betriebsgeräuschen eines Fahrzeuges, insbesondere eines Kraftfahrzeuges |
DE102015214134A1 (de) | 2015-07-27 | 2017-02-02 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren und Regelungsvorrichtung zur aktiven Schallunterdrückung in einem Kraftfahrzeug |
DE102015219144A1 (de) * | 2015-10-02 | 2017-04-06 | Robert Bosch Gmbh | Verfahren zum Betreiben einer aktiven Gasleitungsanlage |
DE102016201984A1 (de) * | 2016-02-10 | 2017-08-10 | Bayerische Motoren Werke Aktiengesellschaft | Wiedergabeeinrichtung für ein Kraftfahrzeug sowie Verfahren zum Betreiben einer solchen Wiedergabeeinrichtung |
US10140970B1 (en) * | 2017-07-31 | 2018-11-27 | GM Global Technology Operations LLC | Engine sound production systems and methods |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5237617A (en) * | 1991-10-17 | 1993-08-17 | Walter Miller | Sound effects generating system for automobiles |
DE4442233A1 (de) * | 1993-11-26 | 1995-06-01 | Nippon Denso Co | Geräuschsteuerungssystem |
DE19643030A1 (de) * | 1996-10-18 | 1998-04-23 | Bayerische Motoren Werke Ag | Geräuscherzeugungssystem für ein Kraftfahrzeug |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08246969A (ja) * | 1995-03-15 | 1996-09-24 | Unisia Jecs Corp | 自動車用アクティブ騒音制御装置 |
-
1998
- 1998-10-05 DE DE19845736A patent/DE19845736A1/de not_active Withdrawn
-
1999
- 1999-08-24 DE DE59912822T patent/DE59912822D1/de not_active Expired - Lifetime
- 1999-08-24 EP EP99116192A patent/EP0992976B1/de not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5237617A (en) * | 1991-10-17 | 1993-08-17 | Walter Miller | Sound effects generating system for automobiles |
DE4442233A1 (de) * | 1993-11-26 | 1995-06-01 | Nippon Denso Co | Geräuschsteuerungssystem |
DE19643030A1 (de) * | 1996-10-18 | 1998-04-23 | Bayerische Motoren Werke Ag | Geräuscherzeugungssystem für ein Kraftfahrzeug |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1193683A2 (de) * | 2000-09-20 | 2002-04-03 | Siemens Automotive Inc. | Steuerungmodus für aktive Geräuschdämpfung |
EP1193683A3 (de) * | 2000-09-20 | 2003-10-01 | Siemens Automotive Inc. | Steuerungmodus für aktive Geräuschdämpfung |
WO2003028007A1 (en) * | 2001-09-25 | 2003-04-03 | Siemens Vdo Automotive Inc. | Modular active noise cancellation air filter speaker and microphone assembly |
US7016506B2 (en) | 2001-09-25 | 2006-03-21 | Siemens Vdo Automotive Inc. | Modular active noise air filter speaker and microphone assembly |
EP1524649A1 (de) * | 2003-10-15 | 2005-04-20 | Ford Global Technologies, LLC, A subsidary of Ford Motor Company | Verfahren und Vorrichtung zum Erzeugen von Motorgeräuschen eines Kraftfahrzeugs |
DE102007021880A1 (de) * | 2007-05-10 | 2008-11-13 | Ford Global Technologies, LLC, Dearborn | Verfahren zur Optimierung des Geräuschempfindens in der Fahrgastzelle eines Kraftfahrzeuges |
US8320581B2 (en) | 2010-03-03 | 2012-11-27 | Bose Corporation | Vehicle engine sound enhancement |
US9299337B2 (en) | 2011-01-11 | 2016-03-29 | Bose Corporation | Vehicle engine sound enhancement |
Also Published As
Publication number | Publication date |
---|---|
EP0992976B1 (de) | 2005-11-23 |
DE19845736A1 (de) | 2000-04-06 |
EP0992976A3 (de) | 2002-12-04 |
DE59912822D1 (de) | 2005-12-29 |
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