CN104149687A - Active noise reduction device suitable for car - Google Patents
Active noise reduction device suitable for car Download PDFInfo
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- CN104149687A CN104149687A CN201410364521.5A CN201410364521A CN104149687A CN 104149687 A CN104149687 A CN 104149687A CN 201410364521 A CN201410364521 A CN 201410364521A CN 104149687 A CN104149687 A CN 104149687A
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Abstract
The invention discloses an active noise reduction device suitable for a car. The active noise reduction device structurally comprises a noise collecting microphone, a noise reduction module, a noise reduction circuit and a noise reduction signal output interface. The noise collecting microphone, the noise reduction module and the noise reduction signal output interface are serially connected into the noise reduction circuit. The noise reduction module comprises a noise reduction chip. The noise reduction signal output interface is connected with a car loudspeaker. Noise signals in the car are collected by the noise collecting microphone, the noise reduction chip analyzes and processes the noise signals and generates noise reduction signals inverted to noise, the noise reduction signals is output to the car loudspeaker through the noise reduction signal output interface and amplified by the loudspeaker, and the amplified noise reduction signals overlap and balance with the noise signals in the car. The active noise reduction device has the advantages that the noise in the car can be effectively lowered by the device, and the device is advanced in technology, ingenious in design, simple to implement, and promising in application prospect.
Description
Technical field
The present invention relates to denoising device, specifically a kind of active noise reducing device that is applicable to automobile.
Background technology
The recoverable amount rapid growth of China's automobile, especially private car user had occupied the overwhelming majority of automobile quantity especially in recent years, and nowadays automobile has become the necessary a kind of vehicle of people's everyday life.But along with the raising of people self health perception, be not only to be also only used as vehicle for the requirement of automobile, people also improve constantly for the requirement of Environmental Health traveling comfort in Automobile.Internal car noise is a key factor that affects health and drive safety as a kind of environmental pollution, and how effectively reducing and reducing noise in car is the target that auto vendor and customer constantly pursue.
Summary of the invention
The present invention, just for these source of pollution of noise in Automobile, in conjunction with up-to-date noise reduction technology, has proposed a kind of simple and easy to do active noise reducing device, can effectively reduce the noise of environment inside car, especially for high vehicle speeds Xia road make an uproar, the noise such as tire is made an uproar.
A kind of active noise reducing device that is applicable to automobile of the present invention, the technical scheme that solves the problems of the technologies described above employing is as follows: the structure of stating the active noise reducing device that is applicable to automobile comprises Noise Acquisition microphone, noise reduction module, Dolby circuit and de-noising signal output interface, wherein, Noise Acquisition microphone, noise reduction module and de-noising signal output interface are connected in Dolby circuit, in described noise reduction module, contain noise reduction chip, de-noising signal output interface connects auto audio equipment; Noise Acquisition microphone is used for gathering internal car noise signal, noise reduction chip carries out analyzing and processing noise signal, and generation and the anti-phase de-noising signal of noise signal, de-noising signal outputs to auto audio equipment through de-noising signal output interface, power amplifier through auto audio equipment amplifies, with the counteracting that superposes of internal car noise signal, reduce or abate the noise.
Preferably, described active noise reducing device also comprises power supply interface, is connected to power end for powering to this active noise reducing device by power supply interface.
Preferably, described power supply interface comprises USB socket, is connected on automobile USB interface to this active noise reducing device power supply by USB socket.
Preferably, the noise reduction chip of described noise reduction module adopts noise reduction SOC chip.
Preferably, described de-noising signal output interface comprises AUX interface, and de-noising signal is input in car audio system de-noising signal is amplified to output through AUX interface.
Preferably, described active noise reducing device adopts backward feedback model, and Noise Acquisition microphone and noise are eliminated under same environment.
The beneficial effect that a kind of active noise reducing device that is applicable to automobile of the present invention has: this active noise reducing device is applicable to noise reduction in automobile, adopt active noise reduction technology to utilize USB interface power supply, AUX output interface carries out de-noising signal output, relies on former car sound equipment to realize the effective elimination to noise inside automobile.This device possess skills advanced person, design ingenious, the feature such as be easy to implement, have broad application prospects.
Brief description of the drawings
Accompanying drawing 1 is the functional block diagram of automobile active noise reducing device described in this example;
Accompanying drawing 2 is the use figure of active noise reducing device described in the present embodiment.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, hereinafter in connection with accompanying drawing, a kind of active noise reducing device that is applicable to automobile of the present invention is elaborated.
The active noise reducing device that is applicable to automobile of the present invention, its structure comprises Noise Acquisition microphone, noise reduction module, Dolby circuit and de-noising signal output interface, wherein, Noise Acquisition microphone, noise reduction module and de-noising signal output interface are connected in Dolby circuit, in described noise reduction module, contain noise reduction chip, de-noising signal output interface is connected to the AUX interface of auto audio equipment; Noise Acquisition microphone is used for gathering internal car noise signal, process noise signal by noise reduction chip analysis, and generation and the anti-phase de-noising signal of noise signal, de-noising signal outputs to auto audio equipment through de-noising signal output interface, power amplifier through auto audio equipment amplifies, with the counteracting that superposes of internal car noise signal, reach the object that reduces or abate the noise.
Preferably, described in be applicable to automobile active noise reducing device also comprise power supply interface, be connected to power end for to this active noise reducing device power supply by power supply interface.Further, because this active noise reducing device power consumption is less, described power supply interface adopts USB socket, powers to active noise reducing device by USB socket is connected to automobile USB interface.Obtaining of this active noise reducing device power supply can be through but not limited to automobile USB interface.
Preferably, the de-noising signal output interface of this active noise reducing device adopts but is not limited to AUX interface, and de-noising signal is input in car audio system de-noising signal is amplified to output through AUX interface.
Embodiment:
Below by an embodiment, the advantage to a kind of active noise reducing device that is applicable to automobile of the present invention and design content, be elaborated.
Described in this enforcement, be applicable to the active noise reducing device of automobile, profile, as a USB flash disk size, adopts noise reduction SOC chip in the noise reduction module of this active noise reducing device, denoising device adopts backward feedback model, be that Noise Acquisition microphone and noise are eliminated under same environment, make active noise reduction better effects if; The Noise Acquisition microphone of this active noise reducing device adopts lapel mike, can guarantee the integral miniaturization of this denoising device, meets the trend of modern electronic product, is convenient for carrying.The power supply interface of this active noise reducing device is arranged on end, and adopts USB socket, can directly be plugged on automobile USB interface and power to denoising device, convenient and practical; The de-noising signal output interface of this active noise reducing device adopts AUX interface, integrated with denoising device, by this AUX interface is connected on auto audio equipment de-noising signal is amplified to output, and the actual use of the output of very convenient de-noising signal and denoising device.
Accompanying drawing 1 is the functional block diagram of automobile active noise reducing device described in this example, as shown in Figure 1, noise gathering microphone is connected to noise reduction module, noise reduction module is connected to de-noising signal output interface, de-noising signal output interface is connected on vehicle audio, vehicle-mounted USB interface is connected to noise reduction module by power supply interface simultaneously, gives this denoising device power supply; Gather internal car noise signal by Noise Acquisition microphone, the noise reduction SOC chip of noise reduction module is processed gathered noise signal, adopt active noise reduction related algorithm to analyze the frequency of noise signal, final formation equates with noise signal amplitude, the de-noising signal of single spin-echo, de-noising signal outputs to the AUX interface of auto audio equipment by de-noising signal output interface, amplify through vehicle-mounted power amplifier, with the counteracting that superposes of internal car noise signal, thereby reduce, reduce or eliminate internal car noise.
Accompanying drawing 2 is the use figure of active noise reducing device described in the present embodiment, as shown in Figure 2, the described active noise reducing device that is applicable to automobile, one end connects automobile USB interface by power supply interface USB socket, other end de-noising signal output interface is connected on the AUX interface of vehicle audio by AUX line, and by horn trumpet, de-noising signal is amplified to output.
Above-mentioned detailed description of the invention is only concrete case of the present invention; scope of patent protection of the present invention includes but not limited to above-mentioned detailed description of the invention; suitable variation or replacement that person of an ordinary skill in the technical field any claims according to the invention and any does it, all should fall into scope of patent protection of the present invention.
Claims (6)
1. one kind is applicable to the active noise reducing device of automobile, it is characterized in that, its structure comprises Noise Acquisition microphone, noise reduction module, Dolby circuit and de-noising signal output interface, wherein, Noise Acquisition microphone, noise reduction module and de-noising signal output interface are connected in Dolby circuit, in described noise reduction module, contain noise reduction chip, de-noising signal output interface connects auto audio equipment; Noise Acquisition microphone is used for gathering internal car noise signal, noise reduction chip carries out analyzing and processing noise signal, and generation equates with noise signal amplitude, the de-noising signal of single spin-echo, de-noising signal outputs to auto audio equipment through de-noising signal output interface, power amplifier through auto audio equipment amplifies, with the counteracting that superposes of internal car noise signal.
2. a kind of active noise reducing device that is applicable to automobile according to claim 1, is characterized in that, described active noise reducing device also comprises power supply interface, is connected to power end for powering to this active noise reducing device by power supply interface.
3. a kind of active noise reducing device that is applicable to automobile according to claim 2, is characterized in that, described power supply interface comprises USB socket, is connected on automobile USB interface to this active noise reducing device power supply by USB socket.
4. a kind of active noise reducing device that is applicable to automobile according to claim 1, is characterized in that, the noise reduction chip of described noise reduction module adopts noise reduction SOC chip.
5. a kind of active noise reducing device that is applicable to automobile according to claim 1, is characterized in that, described de-noising signal output interface comprises AUX interface, and de-noising signal is input in car audio system de-noising signal is amplified to output through AUX interface.
6. a kind of active noise reducing device that is applicable to automobile according to claim 1, is characterized in that, described active noise reducing device adopts backward feedback model, and Noise Acquisition microphone and noise are eliminated under same environment.
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CN201410364521.5A CN104149687A (en) | 2014-07-29 | 2014-07-29 | Active noise reduction device suitable for car |
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104856718A (en) * | 2015-04-29 | 2015-08-26 | 成都陌云科技有限公司 | Active noise-reduction wearable device |
CN104890601A (en) * | 2015-05-22 | 2015-09-09 | 奇瑞汽车股份有限公司 | Active noise reducing device for automobile |
CN104908688A (en) * | 2015-05-20 | 2015-09-16 | 浙江吉利汽车研究院有限公司 | Method and device for active noise reduction of vehicle |
CN105128764A (en) * | 2015-10-20 | 2015-12-09 | 莆田市云驰新能源汽车研究院有限公司 | Automobile audio control method and system |
CN105263088A (en) * | 2015-10-21 | 2016-01-20 | 莆田市云驰新能源汽车研究院有限公司 | Automobile noise reduction method and system |
CN105516858A (en) * | 2015-11-23 | 2016-04-20 | 上海汽车集团股份有限公司 | Method and device for adjusting sound in automobile and automobile |
CN105667431A (en) * | 2015-12-31 | 2016-06-15 | 莆田市云驰新能源汽车研究院有限公司 | Automobile noise reduction method and system |
CN105667432A (en) * | 2015-12-31 | 2016-06-15 | 莆田市云驰新能源汽车研究院有限公司 | Automobile active noise reduction method and system |
CN108538280A (en) * | 2018-02-09 | 2018-09-14 | 艾普科模具材料(上海)有限公司 | A kind of automobile active noise reduction system, method and mobile terminal |
CN111251990A (en) * | 2018-12-03 | 2020-06-09 | 广州汽车集团股份有限公司 | Control method and system for external warning sound of electric vehicle |
CN113525271A (en) * | 2020-04-15 | 2021-10-22 | 上海擎感智能科技有限公司 | Vehicle noise reduction method, vehicle machine and computer storage medium |
CN115942068A (en) * | 2023-02-27 | 2023-04-07 | 蔚来汽车科技(安徽)有限公司 | Method and apparatus for generating virtual reality material |
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CN102837654A (en) * | 2012-05-25 | 2012-12-26 | 苏州卡泰克电子科技有限公司 | Interior noise electronic active inhibition system |
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CN1313212A (en) * | 2000-03-10 | 2001-09-19 | 许光智 | Noise control system for vehicles |
FR2892554A3 (en) * | 2005-10-21 | 2007-04-27 | Renault Sas | Acoustic signal e.g. audible alarm signal, emitting device for motor vehicle cab interior, has main duct divided into secondary air flow circulation ducts via which signal is guided in selective manner by air flow control |
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Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104856718B (en) * | 2015-04-29 | 2017-09-15 | 成都陌云科技有限公司 | A kind of active noise reduction wearable device |
CN104856718A (en) * | 2015-04-29 | 2015-08-26 | 成都陌云科技有限公司 | Active noise-reduction wearable device |
CN104908688A (en) * | 2015-05-20 | 2015-09-16 | 浙江吉利汽车研究院有限公司 | Method and device for active noise reduction of vehicle |
CN104890601A (en) * | 2015-05-22 | 2015-09-09 | 奇瑞汽车股份有限公司 | Active noise reducing device for automobile |
CN105128764A (en) * | 2015-10-20 | 2015-12-09 | 莆田市云驰新能源汽车研究院有限公司 | Automobile audio control method and system |
CN105263088A (en) * | 2015-10-21 | 2016-01-20 | 莆田市云驰新能源汽车研究院有限公司 | Automobile noise reduction method and system |
CN105516858A (en) * | 2015-11-23 | 2016-04-20 | 上海汽车集团股份有限公司 | Method and device for adjusting sound in automobile and automobile |
CN105516858B (en) * | 2015-11-23 | 2018-09-21 | 上海汽车集团股份有限公司 | Interior sound adjusting method, device and a kind of automobile |
CN105667431A (en) * | 2015-12-31 | 2016-06-15 | 莆田市云驰新能源汽车研究院有限公司 | Automobile noise reduction method and system |
CN105667432A (en) * | 2015-12-31 | 2016-06-15 | 莆田市云驰新能源汽车研究院有限公司 | Automobile active noise reduction method and system |
CN105667432B (en) * | 2015-12-31 | 2018-08-21 | 清华大学 | A kind of automobile active denoising method and system |
CN105667431B (en) * | 2015-12-31 | 2018-08-21 | 福建省汽车工业集团云度新能源汽车股份有限公司 | A kind of noise reduction method and system |
CN108538280A (en) * | 2018-02-09 | 2018-09-14 | 艾普科模具材料(上海)有限公司 | A kind of automobile active noise reduction system, method and mobile terminal |
CN108538280B (en) * | 2018-02-09 | 2020-05-19 | 艾普科模具材料(上海)有限公司 | Automobile active noise reduction system and method and mobile terminal |
CN111251990A (en) * | 2018-12-03 | 2020-06-09 | 广州汽车集团股份有限公司 | Control method and system for external warning sound of electric vehicle |
CN113525271A (en) * | 2020-04-15 | 2021-10-22 | 上海擎感智能科技有限公司 | Vehicle noise reduction method, vehicle machine and computer storage medium |
CN115942068A (en) * | 2023-02-27 | 2023-04-07 | 蔚来汽车科技(安徽)有限公司 | Method and apparatus for generating virtual reality material |
CN115942068B (en) * | 2023-02-27 | 2023-11-07 | 蔚来汽车科技(安徽)有限公司 | Method and device for generating virtual reality material |
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