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B
Bernie Deitrick
No, because there isn't one. Watts is power, decibels is sound intensity.
While related, they are not the same thing: A higher wattage speaker will be
louder, but distance from the speaker matters, too.
HTH,
Bernie
MS Excel MVP
While related, they are not the same thing: A higher wattage speaker will be
louder, but distance from the speaker matters, too.
HTH,
Bernie
MS Excel MVP
G
Guest
from some web site I found:
"Another rule of thumb that is useful to remember is that 10 dB is a power
ratio of 10. Any time a power is increased tenfold, it is increased by 10 dB;
thus, a 200W power amplifier will put out 10 dB more electrical power than a
20W amplifier, and its sound power output will also increase by 10 dB."
"Another rule of thumb that is useful to remember is that 10 dB is a power
ratio of 10. Any time a power is increased tenfold, it is increased by 10 dB;
thus, a 200W power amplifier will put out 10 dB more electrical power than a
20W amplifier, and its sound power output will also increase by 10 dB."
B
Bernie Deitrick
But, it still can't say what the decibel level is in absolute terms.....
HTH,
Bernie
MS Excel MVP
HTH,
Bernie
MS Excel MVP
Sound Power Level in dB = 10 * log10( Power in Watts / Reference Power in Watts) where Reference Power is typically 10^-12 Watt
This is not sound pressure ("volume"). The conversion of Power to Pressure is situation-dependent, as Bernie is alluding to. There are conversion formula available for a few idealized situations, though.
This is not sound pressure ("volume"). The conversion of Power to Pressure is situation-dependent, as Bernie is alluding to. There are conversion formula available for a few idealized situations, though.