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Originally Posted by JohnVroom  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 |
Was not questioning your knowledge, I know it to be vastly superior to mine in the audio and acoustics world.
