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Confidence votes 4.9K. No, 10 dB is perceived to be twice as loud, and requires 10 times the power. Doubling of the volume (loudness) should be perceived by a level difference of 10 dB â psychoacousticians say.Doubling the sound pressure (voltage) level corresponds to a measured level change of 6 dB.Doubling of acoustic power (sound intensity) level corresponds to a calculated level change of 3 dB.4 decibels is about as loud as sitting 8 to 10 feet away from stereo speakers. 74 decibels is almost the same as the sound of a washing machine it is just 1 decibel higher.
Each decibel is one tenth of a bel, which is a unit that measures the intensity of sound. For every six decibels, the intensity of the sound doubles. At 90 dB of uninterrupted sound, the limit of safe noise exposure is eight hours.