Question

A distortionless system has over a range of frequencies of interest:

1. A constant amplitude response
2. A linear phase response
3. The output is shifted by a constant delay
4. All of the above

Answer 1

A distortionless system exhibits a constant amplitude response, a linear phase response, and a constant time delay across a range of frequencies.

Step-by-step explanation:

Regarding the attributes of a distortionless system over a range of frequencies of interest, the correct option is 4. All of the above. This means that the system exhibits a constant amplitude response, indicating that the system's output has the same amplitude for the range of frequencies of interest. Additionally, the system would have a linear phase response, which means that the phase of the output signal changes linearly with frequency, leading to a constant time delay for all components of the input signal. This constant time delay is expressed in the third attribute, where the output is shifted by a constant delay compared to the input signal.