What is bandwidth and calculate the bandwidth of an audio signal ranging from 30 Hz to 15 kHz?

Here are the solutions for the questions from Section III, Option 2 and Option 3:

OPTION 2: COMMUNICATION

1. (a) (i) Bandwidth refers to the range of frequencies occupied by a signal or the range of frequencies that a transmission medium can pass. It is the difference between the highest and lowest frequencies in a continuous set of frequencies.

1. (a) (ii)
The audio signals vary from $30 \text{ Hz}$ to $15 \text{ kHz}$.

Step 1: Convert all frequencies to the same unit.

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