CN111762092B - Acoustic generator for vehicle - Google Patents
Acoustic generator for vehicle Download PDFInfo
- Publication number
- CN111762092B CN111762092B CN201910627054.3A CN201910627054A CN111762092B CN 111762092 B CN111762092 B CN 111762092B CN 201910627054 A CN201910627054 A CN 201910627054A CN 111762092 B CN111762092 B CN 111762092B
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- China
- Prior art keywords
- sound
- cover
- engine
- sound generator
- coil
- 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.)
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- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 230000008602 contraction Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000644 propagated effect Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/037—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for occupant comfort, e.g. for automatic adjustment of appliances according to personal settings, e.g. seats, mirrors, steering wheel
- B60R16/0373—Voice control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1244—Intake silencers ; Sound modulation, transmission or amplification using interference; Masking or reflecting sound
-
- 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
- G10K15/04—Sound-producing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2306/00—Other features of vehicle sub-units
- B60Y2306/11—Noise generation, e.g. drive noise to warn pedestrians that an electric vehicle is approaching
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/003—Mems transducers or their use
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Exhaust Silencers (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The invention relates to a sound generator for a vehicle, comprising: a resonance chamber configured to contract and extend in a longitudinal direction; a diaphragm disposed on a front opening portion of the resonance chamber; a cover disposed on the rear opening portion of the resonance chamber; a connecting tube connected between the cover and the engine intake system; a magnet disposed on an inner surface of the cover; a coil disposed at a front end portion of the resonance chamber; and a sound controller configured to apply a current to the coil.
Description
Technical Field
The present invention relates generally to a sound generator for a vehicle, and more particularly, to an active sound generator for a vehicle that is capable of tuning the frequency of engine sound using a resonator and a diaphragm.
Background
In the past, such techniques have been mainly applied: engine noise that is transmitted into the passenger compartment of the vehicle is reduced for the purpose of quietness of the vehicle drive. However, in recent years, in order to realize that dynamic and dynamic driving sounds are heard in the vehicle interior, various types of technologies for amplifying engine sounds have been implemented.
Sound amplification methods can be divided into three types: diaphragm sounder type, electronic sounder type, and active sounder type.
The diaphragm sounder type is configured to: the diaphragm is mounted on the dash panel (i.e., a partition member that separates the engine compartment from the passenger compartment of the vehicle), and a duct is connected between the engine intake side and the diaphragm so that engine exhaust sound is directly transmitted to the passenger compartment of the vehicle through the diaphragm. The diaphragm sounder type has the advantage of achieving natural sound tones by transmitting engine exhaust sound directly to the passenger compartment of the vehicle; however, it cannot tune the engine exhaust sound to the desired frequency and thus cannot achieve the desired sound.
The electronic sounder type is configured to: when the dash panel is excited using a separate actuator, sound generated by the excitation propagates to the passenger compartment of the vehicle. The electronic sound generator has an advantage of being able to tune the engine exhaust sound to a desired frequency band, but rattle noise occurs and durability of the dash panel is reduced according to direct excitation of the dash panel.
The active sounder type is configured to: sounds such as engine sounds are arbitrarily generated by speakers on the vehicle inside. The active sounder type has the advantage of being able to tune the engine exhaust sound to the desired frequency band. However, since the active sounder type does not have vibration such as in the case of the electronic sounder type, it is difficult for the user to feel the sound and feel a sensation different from natural tone because the sound gives the user a sensation of manual processing instead of natural tone.
Disclosure of Invention
The present invention has been made in view of the above-mentioned problems occurring in the related art, and aims to propose an active acoustic generator for a vehicle that adopts a diaphragm acoustic generator type capable of achieving the most natural tone, and is capable of tuning engine exhaust sound to a desired frequency using a resonator to achieve a desired sound.
In order to achieve the above object, according to one aspect of the present invention, an active sound generator for a vehicle includes: a resonance chamber configured to contract and extend in a longitudinal direction; a diaphragm disposed on a front opening portion of the resonance chamber; a cover disposed on a rear opening portion of the resonance chamber; a connecting tube connected between the cover and an engine air intake system; a magnet disposed on an inner surface of the cover; a coil disposed at a front end portion of the resonance chamber; and a sound controller for applying a current to the coil.
The resonant chamber may comprise a hollow chamber and a bellows. The hollow cavity is arranged on the front coaming; the bellows has a front end portion connected to the hollow chamber and a rear end portion connected to the cover.
The inner surface of the hollow chamber may have a coil insertion groove into which the coil is inserted.
The diaphragm may be mounted on the front opening portion of the hollow chamber and disposed in an acoustic wave propagation hole provided in the dash panel.
The inner surface of the cover may have a magnet insertion groove into which the magnet is inserted.
The connection pipe may be made of a rubber material and connected between the cover and the engine intake while having a predetermined deformation allowance.
The connection pipe may be made of a metal material, and a front end portion thereof connected to the cap may have a sliding guide member having a length longer than a thickness of the cap.
The inner diameter portion of the cover may be fitted to the sliding guide member of the connection pipe so that the cover may be moved along the length portion of the sliding guide member when the resonance chamber is contracted or expanded.
The sound generator may further include: an engine Electronic Control Unit (ECU) for transmitting an engine RPM (revolutions per minute) signal to the sound controller.
The sound controller may variably control the voltage applied to the coil according to the engine RPM, thereby amplifying the sound pressure of the frequency of the engine sound varied according to the engine RPM.
Through the technical scheme, the invention provides the following effects.
First, the sound generator according to the exemplary embodiment of the present invention can achieve a desired sound by tuning engine exhaust sound to a desired frequency using a resonator or the like, unlike the conventional diaphragm sound generator type.
Second, since the acoustic generator according to the exemplary embodiment of the present invention adopts the diaphragm acoustic generator type, the acoustic generator can tune the engine sound to the sound of the desired frequency band and realize the engine sound as the most natural tone unlike the conventional electronic acoustic generator type and the active acoustic generator type generating the artificially processed sound.
Drawings
The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
Fig. 1 is an exploded perspective view showing a sound generator for a vehicle according to the present invention;
fig. 2 is a perspective view showing an external appearance of a mounted sound generator for a vehicle according to the present invention;
Fig. 3 is a sectional view showing a sound generator for a vehicle according to an exemplary embodiment of the present invention;
fig. 4 is a sectional view showing a sound generator for a vehicle according to another exemplary embodiment of the present invention;
Fig. 5A and 5B are schematic views showing an operation state of a sound generator for a vehicle according to the present invention.
Detailed Description
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is an exploded perspective view showing a sound generator for a vehicle according to the present invention. Fig. 2 is a perspective view showing an external appearance of a mounted sound generator for a vehicle according to the present invention. Fig. 3 is a sectional view showing a sound generator for a vehicle according to an exemplary embodiment of the present invention.
According to the invention, the resonance chamber 10 is provided with a structure that can be contracted and expanded in the longitudinal direction.
The resonance chamber 10 may include a hollow chamber 12 mounted on the dash panel 100 and a bellows 14 fastened to the hollow chamber 12 so as to be stretchable and contractible.
When the bellows 14 is contracted, the overall internal volume of the resonance chamber 10 is reduced, and when the bellows 14 is extended, the overall internal volume of the resonance chamber 10 is increased.
Further, the diaphragm 20 is mounted on the front opening portion of the resonance chamber 10, and the cover 30 with a hole is mounted on the rear opening portion of the resonance chamber 10.
More specifically, the diaphragm 20 can be mounted on the front opening portion of the hollow chamber 12 provided in the resonance chamber 10, and the cover 30 can be mounted on the rear opening portion of the bellows 14 provided in the resonance chamber 10.
Further, when the front end portion of the hollow chamber 12 is mounted on the dash panel 100, the diaphragm 20 mounted on the front opening portion of the hollow chamber 12 is arranged in the acoustic wave propagation hole 102 provided in the dash panel 100.
For reference, the diaphragm 20 is a thin plate that is also applied to a general speaker, and it plays a role of propagating sound waves to the outside while performing a vibration motion according to a difference in sound pressure.
The connecting tube 40 may be connected between the cover 30 and an engine intake system (e.g., an intake pipe).
According to an exemplary embodiment of the present invention, as shown in fig. 3, the connection pipe 40 may be made of a rubber pipe capable of being expanded and contracted, and may be connected between the cover 30 and the engine air intake system while having a predetermined deformation margin.
Accordingly, when the bellows 14 is expanded or contracted, the cover 30 connected between the bellows 14 and the connection pipe 40 can be easily moved in the expansion and contraction directions along with the bellows 14.
On the other hand, when the connection pipe 40 is made of a metal pipe, the connection pipe 40 cannot be stretched in the longitudinal direction unlike when a rubber pipe is used, and thus the cap 30 cannot be moved together in the stretching and shrinking directions when the bellows 14 is stretched and shrunk. Accordingly, expansion and contraction movements of the bellows 14 are not possible.
According to another exemplary embodiment of the present invention, as shown in fig. 4, when the connection pipe 40 is made of a metal pipe, a front end portion of the connection pipe 40 connected to the cap 30 includes a sliding guide part 42, and the sliding guide part 42 has a length longer than the thickness of the cap 30.
Here, the inner diameter portion of the cap 30 is fitted on the sliding guide member 42 of the connection pipe 40, so that when the bellows 14 of the resonance chamber 10 is expanded and contracted, the cap 30 is moved along the length portion of the sliding guide member 42, whereby the expansion and contraction movement of the bellows 14 is possible.
Typically, the resonator comprises a volume body having a specific volume, such as a plastic bottle, and a neck portion provided in an opening of the volume body. The resonator is mainly used to reduce the sound of a specific frequency band by utilizing the resonance effect of the sound, and the resonator frequency band is determined by the volume of the volume body and the diameter and length of the neck.
For reference, a higher level of sound pressure (dB) of a specific frequency is generated in the resonator, and when the diaphragm is mounted on one surface of the resonator, a sound amplification effect such as sound waves of a corresponding frequency band being strongly propagated to the outside through the diaphragm can be obtained.
Accordingly, the resonance chamber 10 formed by the hollow chamber 12 and the bellows 14 functions as a resonator, and the diaphragm 20 mounted on the front end portion of the hollow chamber 12 performs a function of a sound amplifier that causes sound waves of a specific frequency band to propagate to the outside.
Accordingly, as engine sound transmitted through the connection pipe 40 acts on the diaphragm 20 through the bellows 14 and the hollow chamber 12 performing a resonator action, the engine sound may be transmitted to the passenger compartment of the vehicle through the diaphragm 20.
The inner surface of the hollow chamber 12, in which the resonance chamber 10 is provided, includes a coil insertion groove 13 into which the coil 50 is inserted.
The coil 50 wound at least several or several tens of times in a circular shape may be inserted into the coil insertion groove 13.
A sound controller 60 for applying current and voltage is connected to the coil 50 to energize it.
An engine electronic control unit 80 (electronic control unit, ECU) for transmitting an engine RPM (revolutions per minute ) signal may be connected to the acoustic controller 60, which enables the acoustic controller 60 to receive the engine RPM signal of the engine ECU80 and also to variably control a voltage applied to the coil 50 according to the engine RPM, so that a sound pressure of an engine frequency varying according to the engine RPM may be amplified.
Further, the inner surface of the cover 30 is provided with a magnet insertion groove 32 into which the magnet 70 is inserted, and the permanent magnet 70 formed in a ring shape is inserted into the magnet insertion groove 32.
Depending on the direction of the current applied to the coil 50, the magnet 70 generates a repulsive force to move away from the coil 50 or an attractive force to attach to the coil 50.
According to the present invention having the above-described structure, the operation flow of the sound generator for a vehicle will be described as follows.
Fig. 5A and 5B are schematic views showing an operation state of a sound generator for a vehicle according to the present invention.
When the engine ECU80 transmits the engine RPM signal to the sound controller 60, the sound controller 60 changes the voltage applied to the coil 50 according to the engine RPM in consideration of the fact that the frequency of the C2 component of the engine varies according to the engine RPM.
TABLE 1
| Engine RPM | 1000 | 2000 | 3000 | 4000 | 5000 |
| C2 frequency (Hz) | 33 | 66 | 100 | 133 | 166 |
For reference, the engine C2 component frequency (C2 frequency) is: the vibration component when the fundamental vibration frequency of the engine is increased to twice the number of crankshaft revolutions is symbolized as C2. For any n-cylinder engine, the C2 frequency may be expressed as a vibration component having a frequency of n/2 of the number of crankshaft revolutions.
For example, in the case where the engine RPM is 2700 revolutions per minute, when the C2 frequency is 90Hz lower than the reference value, the sound controller 60 causes the current to be applied to the coil 50 to be applied in the first direction as shown in fig. 5A. Thus, a magnetic field is generated in the coil 50 and the front and rear ends of the coil 50 have N and S poles, respectively. Thus, with the arrangement of the S and N poles, the coil generates a repulsive force that pushes the magnet 70.
As the cover 30 with the magnet 70 inserted moves rearward, the bellows 14 connected to the cover 30 stretches, and the volume inside the resonance chamber 10 increases. Accordingly, engine sound passing through the connection pipe 40 and entering the resonance chamber 10 can be amplified.
Thus, as the volume inside the resonating chamber 10 increases, low frequency engine sound (e.g., 90Hz at an engine RPM of 2700 revolutions per minute, C2 frequency) passing through the connecting tube 40 and into the resonating chamber 10 is tuned to increase in the resonating chamber 10 and acts on the diaphragm 20. Thus, tuned engine sound may be transmitted through the diaphragm 20 to the passenger compartment of the vehicle.
On the other hand, in the case where the engine RPM is 6030 revolutions per minute, when the C2 frequency is 201Hz higher than the reference value, the sound controller 60 causes the current to be applied to the coil 50 to be applied in the second direction as shown in fig. 5B. Thus, a magnetic field is generated in the coil 50 and the front and rear ends of the coil 50 have S and N poles, respectively. Thus, the coil 50 generates an attractive force for pulling the magnet 70 having the S pole and the N pole.
Further, as the cover 30, into which the magnet 70 is inserted, moves forward and the bellows 14 connected to the cover 30 is contracted, the volume inside the resonance chamber 10 is reduced by a predetermined degree.
Accordingly, since the engine sound transmitted through the connection pipe 40 and into the resonance chamber 10 is at a high frequency (for example, C2 frequency is 201Hz, engine RPM is 6030) equal to or higher than a predetermined level, even when the volume inside the resonance chamber 10 is reduced by a predetermined degree, since the engine sound is tuned to be amplified in the resonance chamber 10 and acts on the diaphragm 20, the tuned engine sound can be propagated to the passenger compartment of the vehicle through the diaphragm 20.
Thus, by tuning the frequency of the engine sound to a desired level and propagating it to the passenger compartment of the vehicle, the engine sound can be realized as the most natural tone and propagated to the passenger compartment of the vehicle.
Claims (9)
1. A sound generator for a vehicle, comprising:
A resonance chamber configured to contract and extend in a longitudinal direction;
A diaphragm disposed on a front opening portion of the resonance chamber;
A cover disposed on a rear opening portion of the resonance chamber;
a connecting tube connected between the cover and an engine air intake system;
A magnet disposed on an inner surface of the cover;
A coil disposed at a front end portion of the resonance chamber; and
A sound controller configured to apply a current to the coil,
The inner surface of the cover is provided with a magnet embedded groove, and the magnet is inserted into the magnet embedded groove.
2. The sound generator for a vehicle of claim 1, wherein the resonance chamber comprises:
A hollow chamber disposed on the dash panel; and
A bellows having a front end portion connected to the hollow chamber and a rear end portion connected to the cover.
3. The sound generator for a vehicle according to claim 2, wherein an inner surface of the hollow chamber has a coil insertion groove into which the coil is inserted.
4. The sound generator for a vehicle according to claim 2, wherein the diaphragm is disposed on a front opening portion of the hollow chamber, and is disposed in an acoustic wave propagation hole provided in a dash panel.
5. The sound generator for a vehicle according to claim 1, wherein the connection pipe is made of a rubber material having a predetermined deformation margin, and is connected between the cover and the engine intake.
6. The sound generator for a vehicle according to claim 1, wherein the connection pipe is made of a metal material,
The front end portion of the connection pipe connected to the cap has a sliding guide member having a length greater than the thickness of the cap.
7. The sound generator for a vehicle according to claim 6, wherein an inner diameter portion of the cover is fitted to a sliding guide member of the connection pipe so that the cover moves in a length direction of the sliding guide member when the resonance chamber is contracted or expanded.
8. The sound generator for a vehicle according to claim 1, further comprising:
an engine electronic control unit configured to transmit an engine rpm signal to the sound controller.
9. The sound generator for a vehicle according to claim 8, wherein the sound controller variably controls the voltage applied to the coil according to the engine rpm, thereby amplifying the sound pressure of the frequency of the engine sound that varies according to the engine rpm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020190038009A KR102633965B1 (en) | 2019-04-01 | 2019-04-01 | Sound generator for vehicle |
| KR10-2019-0038009 | 2019-04-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111762092A CN111762092A (en) | 2020-10-13 |
| CN111762092B true CN111762092B (en) | 2024-07-19 |
Family
ID=72718364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910627054.3A Active CN111762092B (en) | 2019-04-01 | 2019-07-11 | Acoustic generator for vehicle |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR102633965B1 (en) |
| CN (1) | CN111762092B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980016717A (en) * | 1996-08-29 | 1998-06-05 | 박병재 | Adjustable resonator |
| KR20050054522A (en) * | 2003-12-05 | 2005-06-10 | 현대자동차주식회사 | Fluid-velocity sensing type side-branch resonator structure for automobile |
| KR20110062404A (en) * | 2009-12-03 | 2011-06-10 | 현대자동차주식회사 | Intake sound generator |
| KR20130050533A (en) * | 2011-11-08 | 2013-05-16 | 현대자동차주식회사 | Vehicular sound generator |
| CN109552163A (en) * | 2017-09-25 | 2019-04-02 | 现代自动车株式会社 | The sound generator system of vehicle |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6487300B1 (en) * | 1999-12-17 | 2002-11-26 | Samsung Electro-Mechanics Co., Ltd. | Vibration speaker |
| KR100370640B1 (en) * | 2000-11-20 | 2003-02-05 | 삼성전기주식회사 | Vibration speaker |
| JP3558986B2 (en) * | 2001-02-01 | 2004-08-25 | Ｎｅｃトーキン岩手株式会社 | Electromagnetic sounding body |
| JP5258907B2 (en) * | 2008-03-05 | 2013-08-07 | ゲネレク オーワイ | Nested compound loudspeaker drive unit |
| JP2014015186A (en) * | 2012-07-11 | 2014-01-30 | Denso Corp | Vehicle presence notification device |
| DE102013104810A1 (en) * | 2013-05-08 | 2014-11-13 | Eberspächer Exhaust Technology GmbH & Co. KG | VEHICLE GENERATOR FOR AN ANTI-VALL SYSTEM FOR INFLUENCING EXHAUST VACUUM AND / OR INTAKE NOISE OF A MOTOR VEHICLE |
| US10414337B2 (en) * | 2013-11-19 | 2019-09-17 | Harman International Industries, Inc. | Apparatus for providing environmental noise compensation for a synthesized vehicle sound |
| KR20150142298A (en) * | 2014-06-11 | 2015-12-22 | 현대자동차주식회사 | Vehicle, control method of vehicle and vehicle driving sound control apparatus |
| ITUB20159781A1 (en) * | 2015-01-13 | 2017-06-30 | Ask Ind Spa | ENGINE SOUND ENHANCEMENT SYSTEM IN A VEHICLE. |
| US9860667B2 (en) * | 2015-09-11 | 2018-01-02 | GM Global Technology Operations LLC | Vehicle sound enhancement |
| DE102016100542A1 (en) * | 2016-01-14 | 2017-07-20 | Faurecia Emissions Control Technologies, Germany Gmbh | Method for generating a drive signal for a loudspeaker arranged in a motor vehicle and exhaust system for an engine and sound system for a passenger compartment |
| CN108650599A (en) * | 2018-04-28 | 2018-10-12 | 维沃移动通信有限公司 | A kind of motor and mobile terminal |
-
2019
- 2019-04-01 KR KR1020190038009A patent/KR102633965B1/en active IP Right Grant
- 2019-07-11 CN CN201910627054.3A patent/CN111762092B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980016717A (en) * | 1996-08-29 | 1998-06-05 | 박병재 | Adjustable resonator |
| KR20050054522A (en) * | 2003-12-05 | 2005-06-10 | 현대자동차주식회사 | Fluid-velocity sensing type side-branch resonator structure for automobile |
| KR20110062404A (en) * | 2009-12-03 | 2011-06-10 | 현대자동차주식회사 | Intake sound generator |
| KR20130050533A (en) * | 2011-11-08 | 2013-05-16 | 현대자동차주식회사 | Vehicular sound generator |
| CN109552163A (en) * | 2017-09-25 | 2019-04-02 | 现代自动车株式会社 | The sound generator system of vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| KR102633965B1 (en) | 2024-02-05 |
| CN111762092A (en) | 2020-10-13 |
| KR20200116343A (en) | 2020-10-12 |
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