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  • noun

Synonyms for Tl

a soft grey malleable metallic element that resembles tin but discolors on exposure to air

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The experimental measurement of the sound transmission loss of a specimen, conducted in a pair of reverberation chambers separated by a window in which the test article can be installed, according to the ASTM E-90 standard [10], is based on:
It is well known, in fact, that in this range the sound transmission loss of a homogeneous partition is ruled by the mass law: the panel stiffness and damping have no effect and TL is only because of the mass per unit surface.
Damping treatments effectively improve the panel sound transmission loss of the panels in low frequency and the coincidence frequency regions; and have an added mass effect (6 dB by doubling the mass) in other frequency regions.
In addition to The Mass Law, another phenomenon termed the "coincidence dip" exists in sound transmission loss measurements.
A dense concrete material provides values of the sound transmission loss higher than other sound proofing materials of the same weight.
They're inside the Sound Transmission Loss Suite in the recently opened Noise and Vibration Application Research Center, a 65,000-f[t.
Sound Transmission Loss (TL) in decibels (dB) is an indication of how much noise a window will block out Acoustic performance is different as the frequent changes Lower frequencies (125 Hz, 250 Hz) are indicative of, vehicular traffic noise sources, while higher frequencies (500 Hz to 4000 Hz) are more indicative of pedestrian and other noise sources.