A key of a mechanical piano struck gently and then struck again but much harder this time. In the second case (a) sound will be louder but pitch will not be different (b) sound will be louder and pitch will also be higher (c) sound will be louder but pitch will be lower (d) both loudness and pitch will remain unaffected

Answer: (a) sound will be louder but pitch will not be different

Pitch

Pitch is a perceptual property of sounds that allows their ordering on a frequency-related scale. The pitch of the voice is defined as the ‘rate of vibration of the vocal folds’.

  • The richness or timber of sound is called the quality.
  • Sound with the same pitch and loudness can be distinguished based on the quality.
  • Music is pleasant to the ears while noise is not. But they both can have the same loudness and pitch.

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