Question

What is Frequency and Bandwidth?

Answer 1

Diagram for frequency and bandwidth

Explanation for frequency

1. The total number of complete cycles per unit time is called frequency.
2. The frequency is defined in terms of $f=\frac{1}{T}$ or $\raisebox{1ex}{$\mathrm{cycles}$}\!\left/ \!\raisebox{-1ex}{$\mathrm{second}$}\right.$, where $T$ is the time period.
3. People can hear frequencies in the range of $20\mathrm{Hz}\mathrm{to}20,000\mathrm{Hz}$

Explanation for bandwidth

1. Bandwidth is a range of frequencies within a continuous set of frequencies.
2. Both frequency and bandwidth are related to data transmission.
   
   $bandwidth=f_2-f_1$ in Hz.
3. The human ear's bandwidth is roughly $20,000\mathrm{Hz}-20\mathrm{Hz}=19,980\mathrm{Hz}.$