A 3 dB increase corresponds to a doubling of the sound energy (pressure^2), but psychoacoustically this doesn't translate into a doubling of perceived loudness.
Loudness depends on spectral content and the individual, but a good rule of thumb is that a ~10 dB increase in sound pressure level yields a doubling in apparent loudness.
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A 3 dB increase corresponds to a doubling of the sound energy (pressure^2), but psychoacoustically this doesn't translate into a doubling of perceived loudness.
Loudness depends on spectral content and the individual, but a good rule of thumb is that a ~10 dB increase in sound pressure level yields a doubling in apparent loudness.