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Showing posts with label decibal. Show all posts
Showing posts with label decibal. Show all posts

Sunday, 17 November 2013

Q.No.160: - Will two separate 50dB sounds together constitute a 100dB sound? Explain.

Q.No.160: - Will two separate 50dB sounds together constitute a 100dB sound? Explain.

Ans: - No, two separate 50dB sounds together do not constitute a 100dB sound because dB is an exponential scale. Each ten dB increase in sound makes the sound ten times louder. An increase of 50dB makes the sound 104 times louder. Hence it will not make 100dB but twice as loud is an increase of 10Log (2) = 3.01dB. So 53.01dB is twice as loud as 50dB.