In-vehicle noise reduction method and device based on pedestrian warning tone and vehicle

A technology of prompting sound and pedestrians, which is applied in the information field, can solve problems such as poor noise reduction effect, and achieve the effect of improving the sound quality and effect in the car
CN114743532APending Publication Date: 2022-07-12GUANGZHOU AUTOMOBILE GROUP CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGZHOU AUTOMOBILE GROUP CO LTD
Publication Date
2022-07-12

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Abstract

The invention discloses an in-vehicle noise reduction method based on pedestrian warning tones, and the method comprises the steps: obtaining an out-of-vehicle warning tone signal and a corresponding original warning tone signal, the out-of-vehicle warning tone signal being a signal collected by an out-of-vehicle microphone after the original warning tone signal is emitted by a warning tone loudspeaker; according to the original prompt tone signal, extracting a target noise signal from the prompt tone signal outside the vehicle; according to the target noise signal, a control signal of a loudspeaker in the vehicle is obtained through a self-adaptive control algorithm; and the control signal is sent to the in-vehicle loudspeaker, so that the in-vehicle loudspeaker makes a sound to offset the target noise signal. According to the invention, the noise component in the out-of-vehicle prompt tone signal transmitted to the interior of the vehicle is effectively filtered out, the effect of noise reduction in the vehicle is improved, and the quality of sound in the vehicle is improved.
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Description

technical field

[0001] The present invention relates to the field of information technology, and in particular, to an in-vehicle noise reduction method, device and vehicle based on pedestrian prompt sounds. Background technique

[0002] According to the regulations related to pedestrian alert sound, existing electric vehicles or vehicles equipped with an external alert sound system must provide pedestrian alert sounds that meet the minimum sound level requirements. However, the low-frequency part of the pedestrian warning sound is easily transmitted to the interior of the vehicle, thereby affecting the interior sound quality.

[0003] In order to reduce the noise inside the vehicle, the fuel vehicle usually uses the CAN signal as the reference signal for noise reduction in the vehicle. The frequency components related to the vehicle speed in the prompt sound are reduced, but the frequency components not related to the vehicle speed cannot be reduced, and the prompt sound ca...

Claims

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