The loudness and softness of sound depend on the amplitude of the wave. More the amplitude more is the loudness.
- The loudness of sound is directly proportional to the square of the amplitude of vibration producing the sound.
- Amplitude determines the loudness of a wave. The greater the amplitude, the greater is the loudness.
- Loudness is defined as the property of sound used to differentiate between loud and faint sound.
- Sounds above 80 dB becomes noise to human ears.