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发明授权
CN101545805B 一种POP噪声测试系统及测试方法 失效 - 权利终止

一种POP噪声测试系统及测试方法
摘要：
本发明公开一种POP噪声测试系统，包括电压测试仪，还包括计权滤波器，所述计权滤波器的输出端连接所述电压测试仪的输入端；所述计权滤波器包括调节匹配单元和滤波单元，所述调节匹配单元的输入端接收POP噪声电压，对该POP噪声电压调节增益，匹配阻抗，再输出到所述滤波单元；所述滤波单元提取设定频率的POP噪声电压输出到所述电压测试仪。所述设定频率为1KHz-6KHz。本发明对扬声器产生的POP噪声电压经计权滤波器处理后，在测量其均方根电压，经该加权滤波器处理后得到的RMS电压与人耳听到的POP噪声大小成正比，RMS电压大小可直接反映该POP噪声对使用者的影响程度。
摘要（英）：

The invention discloses a POP noise test system comprising a voltage tester and a weighted filter, wherein the output end of the weighted filter is connected with the input end of the voltage tester, and the weighted filter comprises a regulating matching unit and a filtering unit; the input end of the regulating matching unit receives POP noise voltage and regulates gains and matches impedance for the POP noise voltage and then outputs the POP noise voltage to the filtering unit, the filtering unit extracts the POP noise voltage with set frequency and then outputs the POP noise voltage to the voltage tester, and the set frequency is 1KHz-6KHz. After the POP noise voltage generated by a speaker is processed by the weighted filter, the POP noise test system tests the mean square root voltage of the speaker, the level of RMS voltage obtained after the POP noise voltage is processed by the weighted filter is in direct proportion to the level of POP noise heard by human ears, and the level of the RMS voltage can directly reflect the influence degree of the POP noise on users.

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