Question

What is called loudness in physics

Answer 1

Loudness refers to how loud or soft a sound seems to a listener. Theloudness of sound is determined, in turn, by the intensity, or amount of energy, in sound waves. The unit of intensity is the decibel (dB). As decibel levels get higher, sound waves have greater intensity and sounds are louder.

Answer 2

Definition :

Loudness is the characteristic property by which can distinguish two sounds of the same frequency and pitch.

We can distinguish between a faint sound from a loud sound using the property .

Factors affecting loudness

• Loudness is directly proportional to the square of amplitude .

• Loudness is inversely proportional to the square of distances.

• Loudness is directly proportional to the surface of a vibrating body.

• Loudness is directly proportional to the density of the medium.

Loudness is measured in decibels.

A sound having more than 120 dB is considered to be a noise pollutant .