If the sound level in a room is increased from 50 dB to 60 dB, by what factor is the pressure amplitude increased?

Question

Philoid · Accepted Answer

Given:
Initial sound level
Final sound level

Constant reference intensity

We can find initial intensity using:

⇒

On solving, we get:

Similarly,

On substituting the values and solving, we get:

As the intensity is proportional to the square of pressure amplitude
we have:

∴

Hence, the pressure amplitude is increased by factor.