 Quote: |
Originally Posted by MTT  Why be so critical of terms?....technically, you can't measure damping on one hand or the "other"
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dead·en·ing Audio Help /ˈdɛdnɪŋ/ Pronunciation Key - Show Spelled Pronunciation[ded-n-ing] Pronunciation Key - Show IPA Pronunciation
–noun
1. a device or material employed to deaden or render dull.
2. a device or material preventing the transmission of sound.
3. a woodland in which the trees are killed by girdling prior to being cleared.
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damp·ing /ˈdæmpɪŋ/ Pronunciation Key - Show Spelled Pronunciation[dam-ping] Pronunciation Key - Show IPA Pronunciation
–noun Physics.
1. a decreasing of the amplitude of an electrical or mechanical wave.
2. an energy-absorbing mechanism or resistance circuit causing this decrease.
3. a reduction in the amplitude of an oscillation or vibration as a result of energy being dissipated as heat.
Both are actual terms, the O/P asked specifically about "deadener" |
Well though I do not recognise the dictionary, your post makes my point! damping is one thing (damping) and deadening is another (according to the dictionary referenced it is transmission loss). STC is not damping, that is, ASTM 90 is not ASTM 756
The term is misused and not really understood since every item discussed is a damping material (ASTM 756) and not a very good TL product (the mass load provides the transmittion loss for ASTM 90)
And you are correct the hand is not the correct measuring device
