关于隔音舱的声学性能测试与分析

Acoustic performance testing and analysis of sound isolation chamber

目前针对市场中隔音舱(又称静音舱)性能好坏没有统一的评判方式及校准方法,给消费者带来较大困扰。该文采用混响室声压隔声值法、室内混响时间测量法、语言传输指数STIPA法等方法,通过对三款隔音舱的测试,提出对隔音舱进行隔声性能、混响时间与语言清晰度(文中以语言传输指数评估)三项指标的测试分析,得知三款隔音舱适用于不同场景的使用需求,从而证明提出方法的科学性和可行性,由此得到了一套较为合理的测试方法。

The absence of standardized evaluation criteria and calibration methods for assessing the efficacy of sound isolation chamber,also known as an anechoic or quiet chamber,in the market presents a significant challenge for consumers.This article conducts reverberation chamber sound pressure insulation value method,the reverberation time in rooms measurement method,language transfer index STIPA method to test on three soundproof cabins,and obtains a set of relatively reasonable testing method by analyzing three indicators:sound insulation performance,reverberation time,and speech clarity(evaluated in the article as Speech Transmission Index).It is found that the three soundproof cabins are suitable for different usage needs in different scenarios,thus proving the scientific and feasible nature of the proposed method.