Ctr sound insulation
WebCTR. Composites Technology and Research (American Society for Testing and Materials) CTR. Carinthian Tech Research (Austria) CTR. Center for Transatlantic Relations … WebAirborne sound insulation ratings can range from as low as Rw 10-15 up to values of Rw 75 and greater. Sometimes the Rw value includes an adjustment factor called the Ctr rating. This is used to account for low frequency noise like trucks and stereo subwoofers. Ctr is always a negative number and values typically range from -4 to around -12.
Ctr sound insulation
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WebSound Insulation is the ability of building elements or structures to reduce sound transmission and is measured over a range of frequencies, usually 100 ~ 3150 Hz. On … WebFor lower frequencies, factor Ctr needs to be added. The acoustic behaviour of a building component is hence defined by three numbers: Rw (C, Ctr). A building component with …
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