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sound generation

Name: Anonymous 2012-05-21 13:36

Im working on a little experiment at home based on infrasound, and I came across a problem. Most of you probably know that sound below the 20 hz range can be very dangerous, and frankly i am not trying to hurt myself. My question is, does anyone here know how many decibels of sound at 18 hz can be considered to be safe?

Name: Anonymous 2012-05-21 22:21

how do i tex

Name: Anonymous 2012-05-21 22:21

how do i tex

Name: Anonymous 2012-05-21 22:23

$-b \pm \sqrt{b^2 - 4ac} \over 2a$\bye

Name: Anonymous 2012-05-21 22:23

$-b \pm \sqrt{b^2 - 4ac} \over 2a$

Name: Anonymous 2012-05-21 22:24

-b \pm \sqrt{b^2 - 4ac} \over 2a

Name: Anonymous 2012-05-21 22:25

i \over can \over tex \over !

Name: Anonymous 2012-05-21 22:27

(x^2-a) \over x

Name: Anonymous 2012-05-21 22:34

(e^(i-1)+9) \ over x-9

Name: Anonymous 2012-05-21 23:12

e^{x-1}

Name: Anonymous 2012-05-25 0:46

Taco.

Name: Anonymous 2012-05-25 0:46

Taco

Name: YEA WE MATH 2012-05-28 8:40

>>9
\frac{e^{i-1}+9}{x-9}
Don't change these.
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