Technical Booklet G Resistance to the Passage of Sound·Page 119·B2.7
Multiple simultaneous sound sources measurement procedure
When multiple sound sources operate simultaneously, average sound pressure levels in source and receiving rooms should be measured in one-third octave bands using either fixed microphone positions averaged on an energy basis or a moving microphone.
For multiple sound sources operating simultaneously, the average sound pressure level in the source and receiving rooms is measured in one-third octave bands using either fixed microphone positions (and averaging these values on an energy basis) or a moving microphone.
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