Thursday 24 February 2011

Reverb Time

So this is what im currently doing at college and thought it could be useful!

There is a formula for calulating the RT60 of a room. RT (reverberation time) 60 is the time taken for a particular frequency to drop by 60db.
but you need to know the absorbtion coeffitients of your materials.

Click for link to coefficients

Other coefficients can be found via google

the number headed at the top of the image (125,250,500,1000,2000,4000) are Frequencies.
The formula is

RT60 = 0.05 X V
          ---------
          ST X Aave

V=Volume of room in Feet3
ST = Total surface area of room in Feet3
Aave= Average absorption coefficients in a room for a particular frequency

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