Does wall size (sq foot/metres) influence STC/TL ??

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DeadPoet
Posts: 21
Joined: Mon Mar 17, 2003 4:52 am
Location: Belgium
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Does wall size (sq foot/metres) influence STC/TL ??

Post by DeadPoet »

Hi,

I don't know in which forum this question belongs and/or someone alread posed it sometime, but does the STC/TL of a wall change with the size of its surface ?

Just wondering ... :?:


Herwig
lovecow
Posts: 250
Joined: Tue Dec 02, 2003 8:32 am
Location: Kansas, USA

Post by lovecow »

Herwig,

The short answer is "Yes."

The reasons, as far as I know, are:

• Size of partition (WxH) will how lower frequencies (longer wavelengths) physically pass through the wall. This only usually comes into play in a lab situation where correction factors have to be used for smaller sample sizes, say 4'x4', tested in the opening between rooms.

• More important is how the size of the partition is dictating the size of the rooms on either side. A larger room on either side could dictate a higher RT on one or both sides, which should be taken into account in STL measurements.

Best regards,

Jeff D. Szymanski
Chief Acoustical Engineer
Auralex Acoustics, Inc.
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