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    • 9. 发明申请
    • AUDIO SIGNAL FOR A SYNTHETIC NOISE OF A MOTOR VEHICLE, AND METHOD FOR GENERATING SAME
    • 用于机动车合成噪声的音频信号及其生产方法
    • WO2014127773A3
    • 2014-10-16
    • PCT/DE2014200017
    • 2014-01-21
    • SCHAEFFLER TECHNOLOGIES GMBH
    • MÜLLER FELIX
    • G10H1/12B60Q5/00G10K15/02
    • B60Q5/008G10H1/12G10H2250/211G10H2250/295G10H2250/381G10K15/02H04R1/22H04R2499/13
    • The invention relates to a method for generating an audio signal (02) for a synthetic noise of a motor vehicle. The invention further relates to said audio signal (02) for the synthetic noise of a motor vehicle. In a step of the method according to the invention, a signal (01) is provided which represents a noise. Furthermore, a fundamental frequency is determined which represents an operating rotational speed of the motor vehicle. In another step, multiple filters are applied to the signal (01) of the noise. Each of the filters has a central frequency which is linked to the determined fundamental frequency by a factor of order. At least a plurality of the factors of order are whole numbers such that said filters filter harmonics of the fundamental frequency. The factors of order and amplitude curves of the filters are selected in a manner corresponding to a sound characteristic of the motor vehicle noise to be synthesized. The noise signal (02) which is evaluated by the filters constitutes the audio signal (02) for the synthetic noise of the motor vehicle dependent on the operating rotational speed of the motor vehicle.
    • 本发明涉及一种用于产生机动车辆的合成噪声的音频信号(02)的方法。 此外,本发明涉及用于机动车辆的合成噪声的所述音频信号(02)。 在根据本发明的方法的一个步骤中,提供代表噪声的信号(01)。 此外,设定表示机动车辆的运行速度的基本频率。 在进一步的步骤中,将几个滤波器应用于噪声的信号(01)。 每个滤波器都有一个中心频率,它通过一个指令系数与指定的基频链接。 至少有几个排序因子是整数,因此这些滤波器可以滤除基频的谐波。 根据机动车要合成的声音的声音特性来选择滤波器的阶次因子和幅度分布。 由滤波器评估的噪声的信号(02)表示机动车辆的合成噪声的音频信号(02),其作为机动车辆的运行速度的函数。