ChinaAutoRegs｜GB/T 4760-1995英文版/English/翻译/声学 消声器测量方法
Acoustics – Measurement Procedure for Silencers

1. SCOPE

This Standard stipulates the measurement procedures and requirements for silencers. This includes the laboratory measurement method and the operational measurement method.
These are mainly carried out to measure the silencer’s insertion loss, but the following may also be measured:

– Noise flow noise power rate;

– Silencer pressure loss and impedance parameters.
This Standard applies to impedance-based piping silencers.
2. NORMATIVE REFERENCES

GB 3102 Acoustics measurement units

GB 3238 Acoustics measurement grades and reference quantity

GB 3240 Commonly used wavelengths in acoustic measurement

GB 3241 1/1 and 1/3 frequency multiplication wave filters used for sound and vibration analysis

GB 3785 Electrical and sound characteristics and measurement methods of sound level meters

GB 3947 Acoustics terminology

GBJ 76 Reverberation echo timing measurement scope

GB 6881 Acoustics − Sound source grade measurement − Echo chamber precision and working methods

GB 6882 Acoustics − Sound source grade measurement − Sound-proof chamber and semi-sound-proof chamber precision method

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