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milliseconds/decimal placement

thunderdome2001

I'm referencing Absorption Coefficients from a Acoustic Techniques book. Numbers given display such as 0.03 0.12 0.15 0.27 0.37 0.42 and even (0.015). Do these numbers translate/convert to 3ms 12ms 15ms 27ms 37 ms 42ms and even (""""")? Thanks, Rob
March 12, 2008 @01:49am
dpd

1 millisecond = .001 second
Years ago, Formula 1 broadcaster David Hobbs kept confusing hundredths (.01) of a second with thousandths (.001) of a second - I kept complaining to Bob Varsha that David needed to go back to math class.... :D
March 12, 2008 @03:55am
michaelhoddy

Absorption coefficients do not refer to milliseconds at all. Rather, it's a decimal/percentage system, where a coefficient of 0 means that no sound is absorbed by a given surface (and all of it is reflected) at a given frequency center. A coefficient of 1 means that 100 percent of the sound at the given frequency center is absorbed.
So, a coefficient of .5 would mean that 50 percent is absorbed, and so on.
March 12, 2008 @05:41am