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In-vehicle sound quality testing device and method

A test device and sound quality technology, applied in the direction of measuring device, vehicle test, machine/structural component test, etc., can solve the problem that it cannot reflect the state received by the driver of the real vehicle, the difference between human ears is large, and the glass lifting process cannot be simulated sound quality issues

Active Publication Date: 2021-01-22
奇瑞新能源汽车股份有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

The difference between ordinary microphones and human ears is huge, it can only collect the volume and cannot reflect the subjective feeling of the occupants on the sound quality in the car
At present, there is no perfect test method for the sound quality of the window working process, nor can it be tested in a real car, which cannot reflect the state received by the driver of the real car, and cannot simulate the impact of the sound quality of the glass lifting process when the pure electric vehicle is running at low speed , to find the most suitable sound quality acceptable to the driver

Method used

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  • In-vehicle sound quality testing device and method

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Embodiment Construction

[0008] An in-vehicle sound quality testing device includes an artificial head 10 that simulates the position of the ears of occupants in the car and collects in-vehicle sound quality parameters.

[0009] In the above scheme, the artificial head 10 is a device that simulates the outline of a human body to simulate a real sound field, and the two ears of the artificial head 10 have cochlea and pinna similar to the human ear to simulate a real human ear. The artificial head 10 is generally used in the acoustic laboratory. The artificial head 10 collects parameters such as loudness, sharpness, roughness, shaking, frequency, etc. in the car, and some of these quantities are combined to form comprehensive indicators such as comfort and irritability. The sound quality evaluation standard is compared to complete the sound quality test.

[0010] It also includes a vehicle window lifting speed acquisition device 20 arranged at the vehicle window, and a wind speed acquisition device 30 ...

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Abstract

The invention provides an in-vehicle sound quality testing device and method. The in-vehicle sound quality testing device comprises an artificial head which simulates the human ear position of a passenger in a vehicle and collects in-vehicle sound quality parameters. According to the scheme, the cochlea and auricle of a real sound field and similar to human ears are simulated through the human body contour of the artificial head, and the collected parameters are closer to the real auditory sense of the human ears.

Description

technical field [0001] The invention is designed in the field of vehicle noise testing, specifically a device and method for testing the sound quality in a vehicle. Background technique [0002] The main task of noise control technology is to reduce the sound radiation of the sound source. The test of automobile noise is mainly to test the volume or sound pressure level. With the development of vehicle NVH technology, the radiated noise of most sound sources has been reduced. It will not cause physical damage to people's hearing, especially the pure electric vehicle lacks the noise made by the engine. At this time, the traditional evaluation criteria of sound pressure level and one-third octave band can no longer reflect people's subjective judgment of noise. Often there are sounds with the same sound pressure level, but the subjective feeling is completely different, and some Although the sound pressure level is high, it makes people feel more pleasant. Under such circumst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00G01M17/007
CPCG01H17/00G01M17/007Y02T90/00
Inventor 谭雨点汪志祥刘沛程豪刘健飞汤庆涛许泽镇何森
Owner 奇瑞新能源汽车股份有限公司