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扬声器的非线性是影响扬声器音质的一个重要因素,因此,历来都受到有关声学工作者的高度重视。到目前为止,已有好几种测试指标和方法,除了谐波畸变和互调失真以外,还有差频失真、二阶堂失真等,对扬声器的非线性失真的研究,一般只限于高次谐波的产生。本文将扬声器作为非线性振动与辐射系统来研究,提出该器件产生分谐波以至达到混浊状态的一些实验结果,并说明这一现象对扬声器音质的影响是不容忽视的。
The nonlinearity of the speaker is an important factor that affects the sound quality of the speaker. Therefore, it has always been highly regarded by the relevant acoustic workers. So far, there have been several test indicators and methods, in addition to harmonic distortion and intermodulation distortion, as well as the difference frequency distortion, second-order distortion and so on, the speaker nonlinear distortion is generally limited to high-order Harmonic generation. In this paper, the speaker as a nonlinear vibration and radiation system to study, put forward the device to produce harmonic subharmonic state and some experimental results, and illustrate the impact of this phenomenon on the speaker sound quality can not be ignored.