Technical Booklet G Resistance to the Passage of Sound·Page 119·B2.10
Reverberation time measurement method
Reverberation time should be measured using the ISO 354 method, with source and microphone positions and decay measurement quantities following the guidance in BS EN ISO 140-7.
BS EN ISO 140-4 and BS EN ISO 140-7 refer to the ISO 354 (BS EN 20354) method for measuring reverberation time. However, for the approved procedure, the guidance in BS EN ISO 140-7 relating to the source and microphone positions, and the number of decay measurements required, should be followed.
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