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Question

The waveform representation converts ____


  1. the pressure variations of sound waves into a line graph

  2. the volume variations of sound waves into a pictorial graph

  3. the tempreature variations of sound waves into a pictorial graph

  4. the pressure variations of sound waves into a pictorial graph


Solution

The correct option is D

the pressure variations of sound waves into a pictorial graph


The waveform representation converts the pressure variations of sound waves into a pictorial graph which is easier to understand. For an example, a sound wave is made of areas of high pressure alternated by an area of low pressure. The high-pressure areas are represented as the peaks of the graph. The low-pressure areas are depicted as the Valleys.

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