10.67 vibration isolation. Reduction achieved in the ability of a system to vibrate in response to a mechanical oscillation through the use of a resilient coupling. Annotation See...
10.66 shielding. Phenomenon whereby sound reduction is provided by interposing a wall or partition between a sound source and a...
10.65 insertion loss. Of a silencer or other sound-reducing element in a specified frequency band, the decrease in sound pressure level measured at the location of the receiver when a sound insulator is inserted in the transmission path between the sound...
10.64 duct lining. Layer of porous material placed on the inner surface of a duct to attenuate sound that propagates through the duct.
10.63 critical frequency. Of a panel or partition, the lowest frequency at which the coincidence effect occurs. Unit, hertz (Hz). ...
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