A vehicle road noise control method and device based on time-frequency domain, and storage medium

By using the multi-channel NFxLMS algorithm in the time frequency domain in the vehicle, the problems of poor low-frequency road noise control effect and large computing resources in the vehicle are solved, and the effects of rapid noise reduction and low computing resources are achieved.

CN114519995BActive Publication Date: 2024-12-24COLSONIC SUZHOU ELECTRONICS CO LTD
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Patent Information

Application Number
CN202210139813.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-02-15
Publication Date
2024-12-24
Estimated Expiration
2042-02-15

AI Technical Summary

Technical Problem

The prior art has poor effect in low-frequency road noise control in vehicles, and active noise reduction algorithms such as FxLMS have problems such as slow convergence and large computing resources, especially in multi-channel cases.

Method used

The multi-channel NFxLMS algorithm based on the time frequency domain is used to obtain filter parameters through frequency domain calculation and update them to the time domain to reduce computing resources and improve convergence speed.

Benefits of technology

It realizes rapid noise reduction of low-frequency road noise in the vehicle, reduces noise pollution, and has fewer computing resources, and the noise reduction performance is comparable to that of traditional algorithms.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses a vehicle road noise control method and device based on time-frequency domain, and a storage medium. The vehicle road noise control method: collects a reference signal of the vehicle road noise at each sampling moment, collects the residual noise signal at each sampling moment of the area requiring noise reduction and records it as an error signal, and if the data of the reference signal and the error signal are accumulated to N respectively, then executes the frequency domain calculation step, and updates the filter parameters obtained in the frequency domain to the time domain. The present invention can actively reduce the road noise caused by the friction between the vehicle tires and the road surface, reduce the noise pollution in the vehicle and have a faster convergence speed, while requiring fewer computing resources.
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Citation Information

Patent Citations

  • Estimating secondary path magnitude in active noise control

    CN108352157A

  • Active control method for road noise

    CN113112981A

  • Active noise control method based on frequency domain exponential function connection network

    CN113870823A

  • Active noise control by adaptive noise filtering

    EP3182407A1

  • Subband Algorithm With Threshold For Robust Broadband Active Noise Control System

    US20160163304A1