A quality of sound produced by regular vibrations of waves is called music. A music Doesn't change suddenly in pitch or loudness. It gives a smoothing and acoustic effect to human ears. But every music must be heard within 60 dB loudness.

Match the correct answer: a. Noise i. Pleasant sound b. Music ii. Unit of sound level c. Decibel iii. Unpleasant sound

a. Noise - iii. Unpleasant sound Noise is unwanted sound, which can disturb the peace of any person; it is an unpleasant sound. It comprises several frequencies and involves a random change in frequency and amplitude. b. Music - i. Pleasant sound Music is a pleasant sound, it also comprises different frequencies, but the frequencies are regularly or follow the periodic pattern. c. Decibel - ii. Unit of sound level Decibel is the unit of intensity of sound. Sound can measure with a device is called decibel meter. a. Noise iii. Unpleasant sound b. Music i. Pleasant sound c. Decibel ii. Unit of sound level

a. Noise	i. Pleasant sound
b. Music	ii. Unit of sound level
c. Decibel	iii. Unpleasant sound

What is music?

Important Questions on Sound

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