how many deciabl increse is twice as loud
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.