CN203574848U - Dynamic noise-reducing system for automobile - Google Patents
Dynamic noise-reducing system for automobile Download PDFInfo
- Publication number
- CN203574848U CN203574848U CN201320454444.3U CN201320454444U CN203574848U CN 203574848 U CN203574848 U CN 203574848U CN 201320454444 U CN201320454444 U CN 201320454444U CN 203574848 U CN203574848 U CN 203574848U
- Authority
- CN
- China
- Prior art keywords
- processing circuit
- audio
- noise reduction
- automobile
- frequency processing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- 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 utility model discloses a dynamic noise-reducing system for an automobile, and the system comprises a DC/DC power module, a noise-reducing terminal, a pick-up audio coupling capacitor, audio processing circuits, vehicle-mounted entertainment-system audio coupling capacitors, and a vehicle-mounted entertainment system. The audio processing circuit is connected with the audio output interface of the vehicle-mounted entertainment system. The vehicle-mounted entertainment-system audio coupling capacitor is connected between the audio processing circuit and the vehicle-mounted entertainment system. The input end of the audio processing circuit is connected with the noise-reducing terminal which consists of a pickup and a loudspeaker. The loudspeaker is connected with the input end of the audio processing circuit. The pickup is connected with the input end of the audio processing circuit through the pick-up audio coupling capacitor. The system provided by the utility model can reduce the noises in the automobile dynamically with no need a lot of acoustic insulating materials.
Description
Technical field
The utility model relates to the treatment system of noise in a kind of Automobile, and relate in particular to automotive interior noise move to processing, and without a kind of automobile DNR dynamic noise reduction system of sound insulator greatly.
Background technology
The harm of noise is many-sided, and it affects people's thinking, and people's normal life and work are caused to very big interference.Meanwhile, noise make people produce agitation, slow in reacting, take sb's mind off sth.The intensity of noise is larger, and frequency is higher, action time is longer, individual is just less to the holding capacity of noise, and noise is just more serious to people's harm.Therefore, car noise can increase driver and occupant's fatigue, and then affects the driving safety of automobile.On the other hand, the noise in automobile also has serious harmful effect to the personnel's that ride digestive system, cardiovascular system, can cause personnel's poor appetite by bus, n and V.Along with the raising that car comfort requires, in Automobile, noise level is to weigh the important indicator of an Automobile Design level and technological level.The noise source of automotive interior has a lot, the noise producing while having car engine work, and the noise producing during blast pipe exhaust, the noise producing in mechanical transmission course, the wind noise that outer gas stream produces, and the resonance noise of two kinds of phenomenon generations etc.So the processing of Vehicle Interior Noise is always a difficult problem for automobile industry.Orthodox car noise reduction is mainly processed from two aspects of approach of noise source and noise transmission, and the method for processing is mainly by buffer unit, to reduce the noise of noise source, and by a large amount of acoustic materials, is stoped and reduced the propagation of noise.These traditional noise-reduction methods have not only increased the weight of automobile greatly, also just mean and increased the consumption of the energy of automobile, and for complicated automobile environment inside car, and the noise that resonance produces seems unable to do what one wishes, and noise reduction is poor.
Chinese patent discloses a kind of automobile engine noise-reduction structure on March 2nd, 2013, this patent comprises cylinder head installation assembly, high pressure oil rail and inlet manifold, special feature is: it is also provided with sound arrester, described sound arrester is cavernous body, it between inlet manifold and cylinder head assembly, be fixed on the Decorative Cover double-screw bolt of inlet manifold, laminating is mated in its bottom surface with inlet manifold.Sound arrester described in the utility model is respectively equipped with the structure of draw-in groove and the oily rail oil inlet pipe of parcel of fixed rail pressure sensor wire harness and heater plug principal wire bundle, and its bottom surface and inlet manifold are fitted completely.It is so a kind of traditional noise-reduction method that the noise-reduction method that this patent relates to is appointed, and belongs to a kind of method that stops noise transmission paths by large sound insulator.This noise-reduction method not only noise reduction is poor, and a large amount of acoustic materials increased the weight of automobile, has increased the energy consumption of automobile.
Utility model content
The utility model is in order to overcome the deficiencies in the prior art part, and a kind of automobile DNR dynamic noise reduction system is provided, and it, can be dynamically to carrying out noise reduction without large sound insulator in Automobile.
To achieve these goals, the utility model is by the following technical solutions:
A kind of automobile DNR dynamic noise reduction system, comprise DC/DC power module, noise reduction terminal, pick-up audio coupling electric capacity, audio frequency processing circuit, vehicle entertainment system audio coupling electric capacity and vehicle entertainment system, described audio frequency processing circuit is connected with vehicle entertainment system audio output interface, described vehicle entertainment system audio coupling electric capacity is connected between audio frequency processing circuit and vehicle entertainment system, the input of described audio frequency processing circuit is connected with noise reduction terminal, described noise reduction terminal consists of pick-up and loud speaker, described loud speaker is connected with the input of audio frequency processing circuit, described pick-up is connected with the input of described audio frequency processing circuit by pick-up audio coupling electric capacity.A kind of automobile DNR dynamic noise reduction system that the utility model proposes, audio frequency processing circuit be connected with audio output interface vehicle entertainment system, so that automobile mounted entertainment systems flows to audio frequency processing circuit by the audio frequency of its normal play, after audio frequency processing circuit, be unlikely to the audio frequency of automobile mounted entertainment systems normal play to eliminate as noise by noise reduction terminal, its audio signal around of the dynamic Real-time Collection of pick-up, and by pick-up audio coupling electric capacity, send the audio signal collecting to audio frequency processing circuit, audio frequency processing circuit receives the audio signal of pick-up, it also receives the audio signal that vehicle entertainment system is sent here by vehicle entertainment system audio coupling electric capacity simultaneously.
As preferably, the input of described audio frequency processing circuit is connected with two noise reduction terminals.In this preferred version, the input of audio frequency processing circuit is connected with two noise reduction terminals, it can process two noise reduction terminals simultaneously in real time, reach the environment of noise reduction terminal surrounding is carried out to noise reduction, but do not limit an audio frequency processing circuit, connect a noise reduction terminal or multiple noise reduction terminal, this depends primarily on the data operation speed of audio frequency processing circuit.
As preferably, described noise reduction terminal is located in car engine room and in four car doors.
As preferably, between described pick-up and loud speaker, be provided with space, interval.In this preferred version, certain distance is set between pick-up and loud speaker, so better noise reduction.
As preferably, described audio frequency processing circuit number and vehicle entertainment system audio coupling electric capacity number have two at least.
As preferably, described audio frequency processing circuit number and vehicle entertainment system audio coupling electric capacity number are respectively three.
Compared with prior art, the utlity model has following beneficial effect: by noise in Automobile is dynamically gathered, on one's own initiative noise in Automobile is eliminated, without large sound insulator, greatly reduce the weight of automobile, reduced the energy consumption of automobile.Meanwhile, the utility model makes noise reduction intellectuality in Automobile, and the advantage of noise reduction is very obvious, and in Automobile, noise is eliminated more thorough.
Accompanying drawing explanation
Fig. 1 is a kind of functional-block diagram of the present utility model.
In figure, 1-noise reduction terminal, 2-pick-up, 3-loud speaker, 4-pick-up audio coupling electric capacity, 5-audio frequency processing circuit, 6-vehicle entertainment system audio coupling electric capacity, 7-vehicle entertainment system.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model will be further described.
A kind of automobile DNR dynamic noise reduction system as shown in Figure 1, comprise DC/DC power module, noise reduction terminal 1, pick-up audio coupling electric capacity 4, audio frequency processing circuit 5, vehicle entertainment system audio coupling electric capacity 6 and vehicle entertainment system 7, described audio frequency processing circuit 5 is connected with vehicle entertainment system 7 audio output interfaces, described vehicle entertainment system audio coupling electric capacity 6 is connected between audio frequency processing circuit 5 and vehicle entertainment system 7, the input of described audio frequency processing circuit 5 is connected with noise reduction terminal 1, described noise reduction terminal 1 consists of pick-up 2 and loud speaker 3, described loud speaker 3 is connected with the input of audio frequency processing circuit 5, described pick-up 2 is connected with the input of described audio frequency processing circuit 5 by pick-up audio coupling electric capacity 4.Described audio frequency processing circuit 5 numbers and vehicle entertainment system audio coupling electric capacity 6 numbers have two at least.
Preferably, the input of described audio frequency processing circuit 5 is connected with two noise reduction terminals 1; Preferably, described noise reduction terminal 1 is located in car engine room and in four car doors; Preferably, between described pick-up 2 and loud speaker 3, be provided with space, interval; Preferably, described audio frequency processing circuit 5 numbers and vehicle entertainment system audio coupling electric capacity 6 numbers are respectively three.
A kind of automobile DNR dynamic noise reduction system that the utility model proposes, its operation principle is: pick-up 2 is its audio signal around of Real-time Collection dynamically, and the audio signal collecting is delivered to audio frequency processing circuit 5 by pick-up audio coupling electric capacity 4.Audio frequency processing circuit 5 not only receives the audio signal of pick-up 2, monitors the audio signal that automobile mounted entertainment systems 7 is sent here by vehicle entertainment system audio coupling electric capacity 6 simultaneously.Because pick-up 2 is when gathering audio signal, not only collect its noise around, and likely collect the normal audio signal that automobile mounted entertainment systems 7 is play, audio frequency processing circuit 5 carries out preliminary treatment by the audio signal that pick-up 2 is sent here under these circumstances, that is: the audio signal that the audio signal of sending here from pick-up 2, filtering vehicle entertainment system 7 is sent here, obtain a new audio signal, be expressed as S
1, this audio signal S
1it is exactly the real noise signal that pick-up 2 collects.Meanwhile, audio frequency processing circuit 5 is to noise signal S
1carry out anti-phase processing, and obtain one and noise signal S
1amplitude size is identical, the audio signal S of single spin-echo
2, and by S
2delivering to loud speaker 22 plays.Due to signal S
1with signal S
2amplitude size is identical, single spin-echo, signal S
1with signal S
2after meeting, just can cancel out each other, with this noise reduction terminal 1, its surrounding environment be carried out to DNR dynamic noise reduction, thoroughly eliminate noise in its car around.Special instruction: process the signal S obtaining through audio frequency processing circuit 5
1with signal S
2should be corresponding to the pick-up 2 in same noise reduction terminal 1 and loud speaker 3; Pick-up 2 in each noise reduction terminal 1 and loud speaker 3 should be at a distance of certain distances, so that noise reduction better; Due to noise reduction terminal 1 be distributed in car engine room and four car doors of automobile in, by the setting to pick-up 2 audio frequency receiving sensitivities, the utility model does not affect the talk problem of driving staff in automobile when operation.
Claims (6)
1. an automobile DNR dynamic noise reduction system, it is characterized in that: comprise DC/DC power module, noise reduction terminal (1), pick-up audio coupling electric capacity (4), audio frequency processing circuit (5), vehicle entertainment system audio coupling electric capacity (6) and vehicle entertainment system (7), described audio frequency processing circuit (5) is connected with vehicle entertainment system (7) audio output interface, described vehicle entertainment system audio coupling electric capacity (6) is connected between audio frequency processing circuit (5) and vehicle entertainment system (7), the input of described audio frequency processing circuit (5) is connected with noise reduction terminal (1), described noise reduction terminal (1) consists of pick-up (2) and loud speaker (3), described loud speaker (3) is connected with the input of audio frequency processing circuit (5), described pick-up (2) is connected with the input of described audio frequency processing circuit (5) by pick-up audio coupling electric capacity (4).
2. a kind of automobile DNR dynamic noise reduction system according to claim 1, is characterized in that: the input of described audio frequency processing circuit (5) is connected with two noise reduction terminals (1).
3. a kind of automobile DNR dynamic noise reduction system according to claim 1 and 2, is characterized in that: described noise reduction terminal (1) is located in car engine room and in four car doors.
4. a kind of automobile DNR dynamic noise reduction system according to claim 1, is characterized in that: between described pick-up (2) and loud speaker (3), be provided with space, interval.
5. a kind of automobile DNR dynamic noise reduction system according to claim 1, is characterized in that: described audio frequency processing circuit (5) number and vehicle entertainment system audio coupling electric capacity (6) number have two at least.
6. a kind of automobile DNR dynamic noise reduction system according to claim 1 or 5, is characterized in that: described audio frequency processing circuit (5) number and vehicle entertainment system audio coupling electric capacity (6) are several is respectively three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320454444.3U CN203574848U (en) | 2013-07-29 | 2013-07-29 | Dynamic noise-reducing system for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320454444.3U CN203574848U (en) | 2013-07-29 | 2013-07-29 | Dynamic noise-reducing system for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203574848U true CN203574848U (en) | 2014-04-30 |
Family
ID=50542555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320454444.3U Expired - Fee Related CN203574848U (en) | 2013-07-29 | 2013-07-29 | Dynamic noise-reducing system for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203574848U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109429144A (en) * | 2017-08-31 | 2019-03-05 | 通用汽车环球科技运作有限责任公司 | System and method for eliminating the bad wind noise in compartment |
-
2013
- 2013-07-29 CN CN201320454444.3U patent/CN203574848U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109429144A (en) * | 2017-08-31 | 2019-03-05 | 通用汽车环球科技运作有限责任公司 | System and method for eliminating the bad wind noise in compartment |
| CN109429144B (en) * | 2017-08-31 | 2021-01-15 | 通用汽车环球科技运作有限责任公司 | System and method for eliminating undesirable wind noise in a vehicle cabin |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201177964Y (en) | In-vehicle active sound eliminating system | |
| CN104716772B (en) | Electric or hybrid automobile motor active noise reducing device | |
| CN108156555A (en) | A kind of train active noise reduction system and method | |
| CN206179506U (en) | Device is subductd to unmanned aerial vehicle noise | |
| CN207692040U (en) | A kind of electric vehicle active noise control system | |
| CN205895381U (en) | Tail pipe and vehicle | |
| CN108597490A (en) | A kind of car audio clunk management system | |
| CN104149687A (en) | Active noise reduction device suitable for car | |
| CN211543441U (en) | Active noise reduction system with low-delay interface | |
| CN203574848U (en) | Dynamic noise-reducing system for automobile | |
| CN203962104U (en) | A kind of outlet pipe baffler | |
| CN210958793U (en) | Vehicle-mounted array microphone | |
| CN204113385U (en) | The active active sound eliminating system of a kind of engine exhaust | |
| CN205194324U (en) | Large -scale generating set's active noise reduction silence device | |
| CN211335863U (en) | Vehicle-mounted audio transmission device and automobile | |
| CN204832953U (en) | Device of making an uproar falls in on -vehicle initiative of plug -and -play formula | |
| CN113724682A (en) | Automobile noise reduction structure and noise reduction method | |
| CN203271865U (en) | Efficient exhaust silencer | |
| CN105645359A (en) | Oxygenerator with noise reduction function and noise reduction method | |
| CN206625922U (en) | A kind of gas handling system of active noise reduction | |
| CN205871866U (en) | A audio playback system and electric automobile for electric automobile | |
| CN200978698Y (en) | Silencer assembly | |
| CN209704791U (en) | New energy vehicle electric vacuum pump active noise reducing device | |
| CN115206279A (en) | Vehicle noise reduction processing system and method and vehicle | |
| CN202611953U (en) | Novel air filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 Termination date: 20170729 |