20 to 50 decibels (dB).
Go through the chart at the link below. Scan the whole chart; some levels are described more than once. Normal conversation is about 60 decibels, and ordinary piano practice is between 60 and 70 decibels.
To calculate the number of decibels that power-level-'A' is greater than power-level-'B',-- Divide 'A' by 'B'-- Take the 'log' of the quotient-- Multiply the 'log' by 10 .If the result is negative, then 'A' is that many decibels lower than 'B'.
Decibels are a logarithmic way of expressing a magnitude, megahertz is a frequency. Specifically, 1 megahertz = 10^6 cycles/second There is no answer to the question.
Decibels
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A quiet conversation is about 60 decibels. The sound of rustling leaves is about 40 decibels. The sound of a mosquito at 3 meters is said to be about 1 decibel.
There is a few generators that will produce less than 60 decibels. That is about the same decibels as background music. These are good to use if you live in an apartment or have very close neighbors.
That depends how close you measure to the mouth speaker. The closer - the louder! The distance is very important if you measure with a sound pressure level meter. A conversation in 1 meter distance may have 60 decibels.
A decibel is a measure of how loud a sound (any sound) is. 50 dB is about the sound level of gentle rainfall. Louder than a quiet room, softer than a quiet conversation. Not as loud as the dial tone on a telephone.
Decibels are really more a measure of sound level. 65 decibels would be about the level of normal conversation or laughter.
65; 85
About as loud as a normal conversation.
yes it is... its almost high enough to make you deaf.........LOL! 8.9 decibels is very, very quiet. It is quieter than a whisper. 70 decibels is loud. 140 decibels is painfully loud.
20 decibels
115 Decibels and on a quiet night it can be heard for up to 5 miles.
68 decibels is the loudness of normal conversation, or perhaps a piano played gently.
A noise level that measures 65 decibels is for a normal conversation on the noise scale. On this scale, 0 decibel is the threshold of hearing and 140 decibels is a jet plane at a distance of about 50 meters away.