loudness - It is how soft or how intense the sound is as perceived by the ear., ultrasonic - These are sound waves with frequency beyond 20 000 Hz that cannot perceived by human ear, sound wave - These are mechanical waves that need a medium to be propagated., music - It is a special sound thar forms and are appealing to our sense of hearing., vibration - It is created by a series of compression and rarefaction which result in longitudinal waves., sound intensity - It refers to the amount of energy a sound wave carries, decibel - It is the standard unit of sound., noise - It is a distorted sound which is not pleasing to the ears., pitch - It refers to the highness and lowness of sound, sonic frequency - These are the sound waves within the 20 Hz-20, 000 Hz range which can be perceived by the human ear.,

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