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Automobile audio noise management system

An audio noise and management system technology, which is applied in the directions of sound-producing equipment, active noise control, instruments, etc., can solve the problems of poor noise reduction effect, complex wiring harness layout of the whole vehicle, and reducing the running smoothness of the digital signal processing module of the host computer. Simple, improve running fluency, and easy to debug

Inactive Publication Date: 2018-09-28
SHANDONG GETTOP ACOUSTIC
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AI Technical Summary

Problems solved by technology

This method will have higher requirements on the computing power of the host digital signal processing module, which will reduce the running smoothness of the host digital signal processing module in other multimedia services, and the decentralized signal communication will make the wiring harness layout of the vehicle very complicated.
[0006] 3) The existing vehicle-mounted active noise cancellation system only detects the noise in the cockpit, adopts the feedback active noise cancellation technology, and does not perform feed-forward acquisition and preprocessing of the main noise sources—engine noise, road noise, and chassis vibration , the noise reduction effect is poor

Method used

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  • Automobile audio noise management system

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Embodiment Construction

[0028] Examples, as attached figure 1 As shown, a car audio noise management system includes a host 1 and a centralized on-board ANC system, wherein the host 1 serves as the control and computing core to control the interactive work of various audio and functional nodes to complete the informatization and intelligence of the entire vehicle needs.

[0029] As a node in the entire car audio and noise management system, the vehicle-mounted ANC system participates in the interaction between the nodes of the vehicle. It converts the collected detection information through AD conversion, DSP processing, and then plays it through the speaker to complete ANC noise removal.

[0030] The vehicle-mounted ANC system includes three parts: a sensor module, an ANC main control board module 4 , and a speaker 10 . The ANC main control board module 4 includes an analog-to-digital converter, an audio communication interface 3 , a DSP module 7 that can be used for noise digital signal processing...

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Abstract

The invention relates to an automobile audio noise management system, which comprises a mainframe and a vehicular ANC and entertainment system. The mainframe serving as a control and operation core controls interaction operation of audio and functional nodes to meet integral informatization and intelligentization requirements. The vehicular ANC system which serves as a node in the whole automobileaudio noise management system participates in interaction among nodes of a whole automobile and is used for subjecting collected detection information to AD conversion, DSP processing and loudspeakerplaying to complete ANC noise elimination. By replacement of a mainframe DSP module with DSP modules in independent nodes for noise reduction treatment, active noise elimination operation efficiencyis improved, and influences of ANC on operating smoothness of mainframe multimedia service are reduced. By an acceleration sensor for feedforward acquisition and pretreatment of road conditions and the like, comprehensive active noise elimination is realized.

Description

technical field [0001] The invention relates to a car audio noise management system, which belongs to the technical field of car audio detection. Background technique [0002] Improving the car driving experience not only focuses on the handling and operation of the vehicle, but also includes improving the comfort of the vehicle's interior environment. Vehicle-mounted noise management systems that implement various audio digital signal processing techniques to enhance, suppress and / or eliminate noise in the vehicle's interior cabin. Automotive noise management systems may include one or more sensors (e.g., microphones, accelerometers, etc.) installed at various locations in the vehicle to monitor and detect noise sources such as engine noise, wind noise, vehicle vibration, road noise, tire cavity noise or other vibration-based noises caused by moving vehicle components. [0003] Existing car audio noise management systems have the following disadvantages: [0004] 1) In t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/178
CPCG10K11/17821G10K11/17837G10K11/1787G10K2210/1282G10K2210/12822G10K2210/3045
Inventor 谢冠宏杨志勇曹方豹
Owner SHANDONG GETTOP ACOUSTIC
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