Question

The ‘Envelope delay’ or ‘Group delay’ is the time delay that the signal component of frequency ω undergoes as it passes from the input to the output of the system.

(a) True

(b) False

This question was posed to me during an interview for a job.

My question is taken from LTI System as Frequency Selective Filters in division Frequency Analysis of Signals and Systems of Digital Signal Processing

Answer 1

Correct answer is (a) True

The explanation: The time delay taken to reach the output of the system from the input by a signal component is called as envelope delay or group delay.