After a white noise signal has been taken as the input of a standard sound source, a static acoustic test is conducted for a prototype silencer without air flow and at the normal temperature.
采用白噪声信号作为标准声源的输入信号，在常温无气流条件下对消声器实物模型进行了静态放声试验。
The advantages and shortcomings of the three methods for the prediction of silencer acoustic attenuation performance are discussed.
通过算例分析和总结三种方法预测消声器声学性能的优缺点。
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