Question

Which of the following is true with respect to the bandwidth of a 2kHz audio signal and a 2kHz binary data?

(a) Bandwidth is higher for audio signals than binary data

(b) Bandwidth is higher for binary data than audio signals

(c) Bandwidth remains the same for both

(d) Bandwidth keeps increasing with time for the binary data

I got this question in quiz.

Asked question is from Single Sideband Modulation topic in section Amplitude & Frequency Modulation of Avionics

Answer 1

Correct answer is (b) Bandwidth is higher for binary data than audio signals

The best I can explain: Since binary data is transmitted in square waves or pulses, they are generally made up of numerous fundamental sine waves. This occupies a huge bandwidth as compared to audio signals which are analog in nature and usually comprise of a lesser number of sine waves.