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Db (A) , Watts
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YANTRA
IsraTrance Full Member
Started Topics :
66
Posts :
166
Posted : Mar 10, 2006 17:26
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Hey fellows!
How many watts i hv in 1db n vice versa? Hm.. 1 watt RMS is like how many watts PMPO ?
Is Db the same as Db(A) ?
Thanxs !! |
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Freeflow
IsraTrance Full Member
Started Topics :
60
Posts :
3709
Posted : Mar 10, 2006 21:42
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l337
IsraTrance Full Member
Started Topics :
55
Posts :
817
Posted : Mar 11, 2006 16:42
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the equation you need for watts to dB is such
SWL in dB = 10 log ( (watts/m^2)/(10x10^-12))
i hope you understand the notation
SWL = sound intensity level in dB
watts/m^2 : use a referance distance of 1m and you will have watts
10x10^-12 (same as 10^-12) is the referance level.
as far as dB being the same as dBA , this is not the case, dBA is a scaled SPL to match how the human ear hears.
hope this isnt to brief or complicated
in essance dBA is what your ear will hear. and now i must go and do my Acoustic engineering homework.  |
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