MULTIMEDIA AND QUALITY OF SERVICE
MULTIMEDIA DATA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a wave that consist of high (compression) and low (rarefaction) air pressure which propagate.
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a signal that does not fluctuate
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a digital data that is continuous
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a discrete data that can be editted
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Detailed explanation-1: -When the vibrating object moves backwards, it creates a region of low pressure called rarefaction. As the object moves back and forth rapidly, a series of compressions and rarefactions is created in the air. These make the sound wave that propagates through the medium.
Detailed explanation-2: -Since air molecules (the particles of the medium) are moving in a direction that is parallel to the direction that the wave moves, the sound wave is referred to as a longitudinal wave. The result of such longitudinal vibrations is the creation of compressions and rarefactions within the air.
Detailed explanation-3: -When a vibrating object moves forward, it pushes and compresses the air in front of it creating a region of high pressure. This region is called compression. This compression starts to move away from the vibrating object. When the vibrating object moves backward, it creates a region of low pressure called rarefaction.