The invention discloses a noise signal making method and device for beat vibration problem evaluation, and belongs to the technical field of noise control, and the method comprises the steps: obtaining a white noise signal, and carrying out the amplitude modulation of the white noise signal, thereby obtaining a noise signal consistent with the amplitude of background noise in a vehicle; the other section of white noise signal is obtained, and two narrow-band signals are obtained through two band-pass filters; performing Hilbert transform, normalization processing and amplitude modulation processing on the two narrowband signals to obtain two narrowband signals conforming to in-vehicle beat vibration noise; and performing superposition simulation on the noise signal consistent with the amplitude of the in-vehicle background noise and the two narrowband signals conforming to the in-vehicle beat vibration noise to synthesize an in-vehicle beat vibration problem noise signal, and applying the in-vehicle beat vibration problem noise signal to subjective evaluation to formulate a target. The invention provides a noise signal making method and device for beat vibration problem evaluation. In-vehicle noise signals are generated in a signal processing mode. White noise and two narrowband signals are superposed to synthesize a noise signal, the sound of the noise signal can simulate the sound of a beat vibration problem noise signal, and the amplitude and frequency parameters of the narrowband signals can be adjusted.

    本发明公开了一种用于拍振问题评价的噪声信号制作方法及装置,属于噪声控制技术领域,获取一段白噪声信号并对其进行调幅处理得到与车内背景噪声幅值一致噪声信号;获取另一段白噪声信号并分别通过两个带通滤波器得到两个窄带信号;对两个所述窄带信号分别进行希尔伯特变换、归一化处理和调幅处理得到两个符合车内拍振噪声的窄带信号;将所述与车内背景噪声幅值一致噪声信号和两个符合车内拍振噪声的窄带信号进行叠加模拟合成车内拍振问题噪声信号,将所述车内拍振问题噪声信号用于做主观评价制定目标。本发明提供一种用于拍振问题评价的噪声信号制作方法及装置,通过信号处理的方式生成车内噪声信号。将白噪声与两个窄带信号叠加合成噪声信号,该噪声信号的声音可以模拟拍振问题噪声信号的声音,其中窄带信号的幅值和频率参数均可调节。


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    Title :

    Noise signal making method and device for beat vibration problem evaluation


    Additional title:

    一种用于拍振问题评价的噪声信号制作方法及装置


    Contributors:
    PAN LINLIN (author) / ZHANG ZHI (author) / QIAN ZHAOJUN (author) / LI SHOUKUI (author) / DU XIAOYU (author)

    Publication date :

    2024-11-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / G01H MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES , Messen von mechanischen Schwingungen oder Ultraschall-, Schall- oder Infraschallwellen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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