Voice can reveal things about the speaker and the message. is a listener's perception of how high or low a sound is, is the basic tone that an individual uses most of the time, and is the pitch movement within an utterance.

Pitch; habitual pitch; intonation.

Explanation:

A sound is the form of energy which produces the sensation of hearing in organisms.

A sound is judged on three properties:

Pitch is the rate of vibration of the sound source. As the frequency of sound increases ,the pitch also increases and as the frequency decreases pitch also falls.

Normal pitch of voice that is generally used by a person while usual speaking is called his habitual pitch.

The change in pitch while speaking is called intonation, it gives an impressive tonal quality to the speech.

the sun's light combined with the visible wavelenghts form what is called ultraviolet radiation, which are the long waves at the end of a visible light sprectrum.

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