Attenuation means the decrease or reduction in the intensity or strength of something. It is when something becomes weaker or less powerful as it travels or passes through a medium or substance. Full definition
Designed to reduce noise attenuation by up to 28dB, they are not only great for sleeping, but they will protect your ears in other noisy environments. (geekwrapped.com)
The $ 140 closed - back wired headset uses comfortable memory foam ear pads that ensure excellent passive noise attenuation of external sound. (ecoustics.com)
And like its sedan sibling, it's quieter than the Civic — the Cruze Hatchback has extra sound attenuation in back because hatches let more noise in than sedans with traditional trunks. (automobilemag.com)