CN102024452B - Vehicle provided with audio system for production of engine noise - Google Patents
Vehicle provided with audio system for production of engine noise Download PDFInfo
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- CN102024452B CN102024452B CN2010102828333A CN201010282833A CN102024452B CN 102024452 B CN102024452 B CN 102024452B CN 2010102828333 A CN2010102828333 A CN 2010102828333A CN 201010282833 A CN201010282833 A CN 201010282833A CN 102024452 B CN102024452 B CN 102024452B
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- vehicle
- engine noise
- microphone device
- loudspeaker
- wheel cover
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q5/00—Arrangement or adaptation of acoustic signal devices
- B60Q5/005—Arrangement or adaptation of acoustic signal devices automatically actuated
- B60Q5/008—Arrangement or adaptation of acoustic signal devices automatically actuated for signaling silent vehicles, e.g. for warning that a hybrid or electric vehicle is approaching
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Human Computer Interaction (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Multimedia (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The invention relates to a vehicle provided with an audio system for a production of an engine noise. The audio system comprises an engine noise production unit (2,3), which is formed as a function of operating parameters of the vehicle to produce an engine noise signal, and a loudspeaker unit (5 to 8), which is coupled with the engine noise production unit. The loudspeaker unit (5 to 8) is arranged in a wheel housing (14) of the vehicle (1). Preferably, the vehicle (1) is an electric vehicle.
Description
Technical field
The present invention relates to a kind of vehicle that has for generation of the sound equipment of engine noise, particularly have for producing engine noise in inner space and/or being used for producing at outside vehicle the electric vehicle of the sound equipment of engine noise.
Background technology
Electric vehicle or have the motor vehicle driven by mixed power of at least one Vidacare corp,, than the vehicle with internal combustion engine, have very slight engine noise.The personnel of outside vehicle are passerby or pedestrian thereby may just feel a bit a little later vehicle for example.In addition, the engine noise that has a vehicle of internal combustion engine can make the vehicle driver feel the present speed of vehicle.And the vehicle with Vidacare corp does not provide this indirectly velocity information to the vehicle driver, so the vehicle driver may be difficult to estimate travel speed.
Therefore known in the prior artly be, produce artificially engine noise for electric vehicle, described engine noise is outwards sent by near the loudspeaker the ventilation fence in vehicle front shroud (Fronthaube) below, and propagates into by the car door loudspeaker in the inner space of vehicle.But engine noise is propagated into outside vehicle need very large sound power.And the sound that so produces can't make vehicle driver and pedestrian's satisfaction.
Summary of the invention
Therefore the object of the invention is to, proposes a kind of scheme with low cost, it is for electric vehicle, no matter in the inner space of vehicle,, still at outside vehicle, can produce gratifying engine noise.
, according to the present invention, adopt vehicle according to the invention can realize this purpose.According to a kind of technical scheme of the present invention, a kind of vehicle that has for generation of the sound equipment of engine noise has been proposed, wherein this sound equipment comprises: the engine noise generation device, its operational factor according to vehicle produces the engine noise signal; And microphone device, itself and engine noise generation device are coupled, and according to the engine noise signal, produce engine noise, it is characterized in that, and microphone device is arranged in the wheel cover of vehicle.According to another kind of technical scheme of the present invention, a kind of vehicle that has for generation of the sound equipment of engine noise has been proposed, wherein this sound equipment comprises: the engine noise generation device, its operational factor according to vehicle produces the engine noise signal; And microphone device, itself and engine noise generation device are coupled, and according to the engine noise signal, produce engine noise, it is characterized in that, and microphone device is arranged in the intermediate bracket of vehicle.
According to the present invention, a kind of vehicle that has for generation of the sound equipment of engine noise is proposed.This sound equipment comprises engine noise generation device and microphone device.The engine noise generation device produces the engine noise signal according to the operational factor of vehicle.Described engine noise signal is fed to microphone device, microphone device engine noise sonorific according to this signal.Microphone device is arranged in the wheel cover of vehicle.In the wheel cover that microphone device is arranged on vehicle body, so can produce common engine noise sound spectrogram in simple mode.
Microphone device can comprise sounding body, and the sounding body that preferably plastics, consists of suitably is equipped with at least one loudspeaker in sounding body, makes loudspeaker engine noise can be propagated by the wheel cover shell on wheel cover.Sounding body can be for example hollow body, and its volume for example is about 5 liters.Microphone device preferably includes two loudspeakers that are encased in sounding body.In order to protect loudspeaker, microphone device can have a roll guard before each loudspeaker, and this roll guard hides loudspeaker towards wheel cover.Because the wheel cover shell is made by plastics, metal or their combination usually, so by the combination of sounding body and wheel cover shell, can obtain a kind of specially suitable sound spectrogram., in order to make loudspeaker obtain moisture protection, microphone device can be arranged on the top of the wheel cover shell on wheel cover.
, according to a kind of embodiment, be equipped with an aforesaid microphone device in each wheel cover of vehicle.So just can guarantee to produce equably noise at vehicle periphery, can make thus the pedestrian feel reliably vehicle.For example can be alternatively only in the wheel cover of front-wheel or only respectively be provided with an aforesaid microphone device in the wheel cover of trailing wheel.
The engine noise generation device for example can comprise stereo set, MP3 player or the computing machine of vehicle, stores one or more corresponding noises on it, and can play.
According to the present invention, engine noise means the noise corresponding with internal combustion engine noise, but also can be the sound, tune etc., and it may not reflect the engine noise of internal combustion engine as engine noise.But engine noise is preferably corresponding to internal combustion engine noise.
According to a kind of embodiment, the engine noise generation device sends the engine noise signal with different sound intensity levels.The engine noise generation device for example can reduce along with the raising of car speed the sound intensity level of the engine noise signal of electricity.When speed was higher, vehicle was usually located on highway or local road, can not run into or seldom run into the pedestrian here.Can reduce engine noise accordingly when speed is higher.
According to the present invention, a kind of vehicle that has for generation of the sound equipment of engine noise has also been proposed, as previously mentioned, this sound equipment comprises engine noise generation device and microphone device.Microphone device is arranged in the intermediate bracket of vehicle.In order to obtain suitable sound spectrogram and the suitable sound intensity, microphone device can have sounding body, and at least one loudspeaker suitably is housed in this sounding body, thereby it is propagated engine noise towards the inner space of vehicle.Microphone device for example can comprise two loudspeakers, and wherein the first loudspeaker is mainly propagated engine noise towards the driver side of vehicle, and the second loudspeaker is mainly propagated engine noise towards copilot's side of vehicle.So just can make equably driver and copilot hear sound.Be arranged on due to microphone device in the intermediate bracket of vehicle, so resulting sound spectrogram is similar to known internal combustion engine sound spectrogram.
According to a kind of embodiment, the engine noise generation device can improve along with the raising of car speed the sound intensity level of engine noise signal.Adopt this mode can be along with the raising of car speed to produce loud engine noise in inner space, make thus the vehicle driver feel speed on sound.
According to a kind of embodiment, the vehicle operating parameters that affects the noise signal that the engine noise generation device produces comprises the position of car speed or vehicle throttle pedal.Produce the engine noise signal according to the speed of vehicle and/or the throttle control position of vehicle, and then produce the engine noise send, adopt this mode to produce and sound spectrogram that reflection and car speed and engine output are complementary.Particularly can make thus the vehicle driver feel the output power of car speed and vehicle motor.
According to a kind of embodiment, vehicle can have microphone device at least one, in a plurality of or all vehicle wheel cover, and has microphone device in the vehicle intermediate bracket.
Description of drawings
Below the contrast accompanying drawing is by preferred embodiment introducing the present invention.
The schematically illustrated vehicle for generation of the sound equipment of engine noise of having according to one embodiment of the present invention of Fig. 1;
Fig. 2 is the schematic cut-open view according to the front wheel housing of the vehicle of one embodiment of the present invention.
Embodiment
Fig. 1 is the schematic vertical view of vehicle 1.The travel direction of advancing of vehicle 1 illustrates with arrow 19, and namely in Fig. 1, the front end of vehicle 1 is positioned at right side, and rear vehicle end is positioned at left side.Vehicle 1 comprises left rear wheel 10, off hind wheel 11, the near front wheel 12 and off-front wheel 13.Each wheel 10-13 is equipped with corresponding wheel cover, and described wheel cover will contrast Fig. 2 and describe in detail.Be provided with microphone device in each wheel cover, namely be provided with microphone device 5 in the wheel cover of wheel 10, be provided with microphone device 6 in the wheel cover of wheel 11, be provided with microphone device 7 in the wheel cover of wheel 12, be provided with microphone device 8 in the wheel cover of wheel 13.Each microphone device 5-8 includes a sounding body
16 and two loudspeakers 17.Two loudspeakers 17 suitably are fixed on sounding body 16, make their clog the opening that is arranged on sounding body 16.Sounding body 16 for example can be made of plastics.
Vehicle 1 comprises another microphone device 9 in the inner space that is arranged on vehicle 1.Microphone device 9 is arranged in the intermediate bracket of vehicle 1, and comprises a sounding body 16 and two loudspeakers 17.These two loudspeakers 17 are suitably installed, and make the loudspeaker 17 can be towards the driver side signal of sounding, and another loudspeaker 17 can be towards copilot's side signal of sounding.
Vehicle 1 also comprises three engine noise generation device 2-4.Engine noise generation device 2 and trailing wheel 10,11 microphone device 5,6 are coupled, and engine noise generation device 3 and front- wheel 12,13 microphone device 7 and 8 are coupled, and engine noise generation device 4 is coupled with the microphone device 9 in inner space.Engine noise generation device 2-4 can have the storer of numeral, and for example hard disk or flash memory, digitally store engine noise on it.Engine noise generation device 2-4 all has: the CAN bus interface that is used for making the CAN bus 20 of engine noise generation device 2-4 and vehicle to be coupled; The RS232 interface that the interface 21 of numeral is for example connected; With other joint 22 power connection for example.CAN bus 20 is provided with terminal impedance 23 on each engine noise generation device 2-4.By interface 21 and other joint 22 of CAN bus 20, numeral, engine noise generation device 2-4 detects the running parameter of vehicle 1, for example the throttle control position of the present speed of vehicle 1 or vehicle 1.According to the running parameter of these vehicles that record 1, engine noise generation device 2-4 produces the engine noise signal, and these engine noise signals are passed to loudspeaker 17 by corresponding circuit, and is output as the engine noise of sound there.
According to the running parameter of measured vehicle 1, engine noise generation device 2-4 for example can regulate the tonequality of engine noise and the sound intensity of engine noise.For example, when speed is low, outwards towards the sound intensity of microphone device 5-8 can, greater than the sound intensity when speed is higher,, because vehicle is usually located on highway or local road when speed is higher, can not run into or seldom run into the pedestrian here.On the contrary, the internal noise that is sent by microphone device 9 can be conditioned loudlyer when speed is higher, in order to loud engine noise is passed to driver and passenger in inner space, as be this kind situation when vehicle has internal combustion engine.Engine noise generation device 2 and 3 also can be combined into a common engine noise generation device mutually, and it jointly is controlled at four microphone device 5-8 in the wheel cover of wheel 10-13.
The wiring situation of loudspeaker shown in Fig. 1 17 in microphone device 5-8, in this wiring situation, two loudspeakers 17 of microphone device 5-8 all are connected in series, and every two this loudspeaker series circuits all are connected in parallel.For example when each loudspeaker 17 has the impedance of 4 ohm, from engine noise generation device 2,3 angle, this circuit also produces the impedance of 4 ohm.Thereby both can the Application standard loudspeaker, also can the Application standard final stage.
Microphone device 5-9 all has sounding body 16, and the volume of this sounding body for example is about 5 liters.Such volume is enough to effectively produce sounding on the one hand in microphone device 5-9, and is compact on the other hand, thereby microphone device 5-9 can be arranged in the wheel cover of wheel 10-13 and be arranged in intermediate bracket.
Fig. 2 is the detailed section view of the wheel cover 14 of the near front wheel 12.Wheel cover 14 be positioned at vehicle 1 left side front mudguard 24 below.Lamp unit 25 is installed built-inly in mudguard 24.Wheel 12 be positioned at mudguard 24 below, and surrounded by the zone relative with mudguard 24 of wheel cover shell 15 in the zone of wheel cover 14.Microphone device 7 is positioned at the top of wheel cover shell 15, and this wheel cover shell for example can be made by the combination of plastics, metal or plastics and metal.Microphone device 7 is included in the sounding body 16 shown in cut-open view.Sounding body 16 has two openings 26, and loudspeaker 17 is inserted in these openings., in order to hide loudspeaker 17, before these loudspeakers 17, a roll guard 18 was being arranged all before each loudspeaker 17 on the direction of wheel cover shell 15.For the purpose of understanding, the wiring situation of also not shown loudspeaker 17 and engine noise generation device 3 in Fig. 2.
Because loudspeaker 17 is arranged on sounding body 16, and this sounding body 16 is positioned on the vehicle body of vehicle 1, and sound propagates towards wheel cover shell 15, so can produce especially simply suitable sound spectrogram.
Adopt the set-up mode of this sounding body 16 for two loudspeakers 17 are respectively arranged, the sound spectrogram that produces can allow the passenger of vehicle 1 and the personnel of vehicle 1 outside feel comfortable.
Although engine noise produces in engine noise generation device 2-4 in above stated specification, but engine noise also can by the stereo set of vehicle for example MP 3 players or computing machine produce, and directly or by corresponding amplifier final stage flow to microphone device 5-9.Although used ten loudspeakers in above stated specification, in order to producing engine noise outside vehicle and in the inner space at vehicle, but also can use the loudspeaker of any amount, for example use respectively a loudspeaker in each wheel cover, and use a loudspeaker in the inner space of vehicle.Be used for not only can being used for having as described above the vehicle of Vidacare corp at vehicle interior and/or outside the present invention who produces engine noise, and can be advantageously used in the vehicle with arbitrary other drive unit, so that at vehicle interior with outside produce or affect engine noise.
Reference numerals list
1 vehicle
2-4 engine noise generation device
The 5-9 microphone device
The 10-13 wheel
14 wheel covers
15 wheel cover shells
16 sounding bodies
17 loudspeakers
18 roll guards
19 travel directions of advancing
20 CAN buses
The interface of 21 numerals
22 other joints
23 terminal impedances
24 mudguards
25 lamp unit
26 openings
Claims (21)
1. vehicle that has for generation of the sound equipment of engine noise, wherein this sound equipment comprises:
-engine noise generation device (2,3), its operational factor according to vehicle (1) produces the engine noise signal; With
-microphone device (5-8), itself and engine noise generation device (2,3) are coupled, and according to the engine noise signal, produce engine noise,
It is characterized in that, microphone device (5-8) is arranged in the wheel cover (14) of vehicle (1).
2. vehicle as claimed in claim 1, is characterized in that, is equipped with microphone device (5-8) in each wheel cover (14) of vehicle (1).
3. vehicle as claimed in claim 1 or 2, is characterized in that, microphone device (5-8) is arranged on the top of the wheel cover shell (15) on wheel cover (14).
4. vehicle as claimed in claim 1, it is characterized in that, microphone device (5-8) comprises sounding body (16), at least one loudspeaker (17) suitably is installed in sounding body, makes described at least one loudspeaker (17) propagation of the wheel cover shell (15) on wheel cover (14) with engine noise.
5. vehicle as claimed in claim 4, is characterized in that, microphone device (5-8) comprises two loudspeakers (17) that are encased in sounding body (16).
6. vehicle as described in claim 4 or 5, is characterized in that, microphone device (5-8) comprises roll guard (18), and this roll guard hides described at least one loudspeaker (17) towards wheel cover (14).
7. vehicle as claimed in claim 1, is characterized in that, engine noise generation device (2,3), through design, makes the sound intensity level of engine noise signal reduce along with the raising of the speed of vehicle (1).
8. vehicle as claimed in claim 1, is characterized in that, the operational factor of vehicle comprises the speed of vehicle (1).
9. vehicle as claimed in claim 1, is characterized in that, the operational factor of vehicle comprises the throttle control position of vehicle (1).
10. vehicle as claimed in claim 1, is characterized in that, engine noise generation device (2-4), through design, makes the sound intensity level of engine noise signal regulate according to the operational factor of vehicle (1).
11. vehicle as claimed in claim 1, is characterized in that, vehicle (1) comprises the vehicle of the driving engine with at least one electricity.
12. vehicle as claimed in claim 1, it is characterized in that, vehicle (1) has at least two microphone device (5-9), at least one microphone device (5-8) in wherein said at least two microphone device is arranged in the wheel cover (14) of vehicle (1), and another microphone device at least (9) in described at least two microphone device is arranged in the intermediate bracket of vehicle (1).
13. a vehicle that has for generation of the sound equipment of engine noise, wherein this sound equipment comprises:
-engine noise generation device (4), its operational factor according to vehicle (1) produces the engine noise signal; With
-microphone device (9), itself and engine noise generation device (4) are coupled, and according to the engine noise signal, produce engine noise,
It is characterized in that, microphone device (9) is arranged in the intermediate bracket of vehicle.
14. vehicle as claimed in claim 13, it is characterized in that, microphone device (9) comprises sounding body (16), at least one loudspeaker (17) suitably is installed in sounding body, makes described at least one loudspeaker (16) that engine noise is propagated towards the inner space of vehicle (1).
15. vehicle as described in claim 13 or 14, it is characterized in that, microphone device (9) comprises the first loudspeaker (17) and the second loudspeaker (17), these loudspeakers are through suitably arranging, make the first loudspeaker (17) that engine noise is mainly propagated towards the driver of vehicle (1), the second loudspeaker (17) is mainly propagated engine noise towards the copilot of vehicle (1).
16. vehicle as claimed in claim 13, is characterized in that, engine noise generation device (4), through design, makes the sound intensity level of the engine noise signal of electricity improve along with the raising of the speed of vehicle (1).
17. vehicle as claimed in claim 13, is characterized in that, the operational factor of vehicle comprises the speed of vehicle (1).
18. vehicle as claimed in claim 13, is characterized in that, the operational factor of vehicle comprises the throttle control position of vehicle (1).
19. vehicle as claimed in claim 13, is characterized in that, engine noise generation device (2-4), through design, makes the sound intensity level of engine noise signal regulate according to the operational factor of vehicle (1).
20. vehicle as claimed in claim 13, is characterized in that, vehicle (1) comprises the vehicle of the driving engine with at least one electricity.
21. vehicle as claimed in claim 13, it is characterized in that, vehicle (1) has at least two microphone device (5-9), at least one microphone device (5-8) in wherein said at least two microphone device is arranged in the wheel cover (14) of vehicle (1), and another microphone device at least (9) in described at least two microphone device is arranged in the intermediate bracket of vehicle (1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009040898.3 | 2009-09-11 | ||
| DE200910040898 DE102009040898A1 (en) | 2009-09-11 | 2009-09-11 | Vehicle, particularly electric vehicle or hybrid vehicle, comprises audio system for production of engine noise, where audio system comprises engine noise production unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102024452A CN102024452A (en) | 2011-04-20 |
| CN102024452B true CN102024452B (en) | 2013-11-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102828333A Active CN102024452B (en) | 2009-09-11 | 2010-09-10 | Vehicle provided with audio system for production of engine noise |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102024452B (en) |
| DE (1) | DE102009040898A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2505432A1 (en) * | 2011-03-31 | 2012-10-03 | Alcatel Lucent | Altert system for wheeled vehicles |
| DE102011111422A1 (en) * | 2011-08-23 | 2013-02-28 | Audi Ag | Multifunction belt for a motor vehicle |
| DE102011084168B4 (en) | 2011-10-07 | 2020-07-09 | Röchling Automotive AG & Co. KG | Flexible shaft loudspeaker, motor vehicle with flexible shaft loudspeaker, and use of a flexible shaft loudspeaker |
| CN102651215B (en) * | 2012-04-27 | 2014-03-12 | 浙江吉利汽车研究院有限公司杭州分公司 | Noise producing device of automobile engine and control method thereof |
| DE102012020780B4 (en) * | 2012-10-23 | 2022-02-17 | Audi Ag | motor vehicle |
| GB2513611B (en) * | 2013-05-01 | 2015-10-14 | Jaguar Land Rover Ltd | Control system, vehicle and method |
| EP3915836A1 (en) | 2013-05-01 | 2021-12-01 | Jaguar Land Rover Limited | Control system, vehicle and method |
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| US7231052B2 (en) * | 2002-07-18 | 2007-06-12 | Honda Giken Kogyo Kabushiki Kaisha | Vibration-isolating and sound isolating system for vehicle |
| CN101366072A (en) * | 2005-11-01 | 2009-02-11 | 丰田自动车株式会社 | Engine sound control apparatus and control method |
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| DE7322694U (en) * | 1974-03-07 | Hueck & Co Kg | Rotating beacon for vehicles with right of way with acoustic devices built into the base | |
| DE2635655A1 (en) * | 1976-08-07 | 1978-02-09 | Rudi Kroner | Sound volume regulator for car radio - uses exposed wire wind speed detector to control radio volume to compensate increased noise at higher speeds |
| US4819269A (en) * | 1987-07-21 | 1989-04-04 | Hughes Aircraft Company | Extended imaging split mode loudspeaker system |
| GB2219873A (en) * | 1988-06-16 | 1989-12-20 | Senoc Corp | Controller for a radio-controlled car provided with a speed display device |
| GB8908980D0 (en) * | 1989-04-20 | 1989-06-07 | Lotus Group Plc | Treatment of noise in vehicles |
| US5828759A (en) * | 1995-11-30 | 1998-10-27 | Siemens Electric Limited | System and method for reducing engine noise |
| DE19701801C2 (en) * | 1996-12-20 | 1998-10-29 | Aarcon Prauss Arminius Gmbh | Device for imitating engine and vehicle noise |
| JP4140607B2 (en) * | 2004-03-10 | 2008-08-27 | ヤマハ株式会社 | Engine sound processing device |
| JP5189307B2 (en) * | 2007-03-30 | 2013-04-24 | 本田技研工業株式会社 | Active noise control device |
| JP4344763B2 (en) * | 2007-09-03 | 2009-10-14 | 本田技研工業株式会社 | Active vibration and noise control device for vehicle |
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2009
- 2009-09-11 DE DE200910040898 patent/DE102009040898A1/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7231052B2 (en) * | 2002-07-18 | 2007-06-12 | Honda Giken Kogyo Kabushiki Kaisha | Vibration-isolating and sound isolating system for vehicle |
| CN101366072A (en) * | 2005-11-01 | 2009-02-11 | 丰田自动车株式会社 | Engine sound control apparatus and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102024452A (en) | 2011-04-20 |
| DE102009040898A1 (en) | 2011-03-17 |
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