47 dB is considered to be a moderate noise level, similar to the sound of a quiet conversation or background noise in a library. It is generally not loud enough to cause discomfort or disturbance.
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Half as loud in decibels is about a 10 dB decrease. For example, if a sound is initially at 70 dB, half as loud would be around 60 dB.
A sound that measures 55 dB is considered moderately loud, similar to a normal conversation or background music.
100 dB is considered very loud and can cause hearing damage with extended exposure. It is approximately as loud as a chainsaw, a jackhammer, or a rock concert. It is recommended to use ear protection in environments with noise levels reaching 100 dB.
A noise that is 55 decibels loud is considered moderate in volume.
94 dB is considered to be loud and can cause hearing damage with prolonged exposure. It is similar to the noise level of a motorcycle or a lawnmower at close range.