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A student wrote this about digitizing audio:

medium📝 Analysis Q14 of Q15
Intro to Computing - How Data is Represented
A student wrote this about digitizing audio:

Step 1: Convert sound to digital numbers
Step 2: Sample the sound wave
Step 3: Measure sound levels

What is wrong with this order?
AMeasuring sound levels is not needed
BSampling should come before converting to numbers
CConverting to numbers should be last
DThe steps are correct as written
Step-by-Step Solution
Solution:

  1. Step 1: Understand correct digitizing order

    First, the sound wave is sampled, then measured, then converted to digital numbers.

  2. Step 2: Identify error in student's order

    The student converted to numbers before sampling, which is incorrect.

  3. Final Answer:

    Sampling should come before converting to numbers -> Option B

  4. Quick Check:

    Sampling before conversion [OK]
Quick Trick: Sample before converting to numbers [OK]
Common Mistakes:
MISTAKES
  • Converting before sampling
  • Skipping measurement step
  • Thinking order does not matter

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