A filter is said to be linear phase filter if the phase delay and group delay are _______Select one:LowModerateConstantHigh

Step 1: Break Down the Problem

We need to determine the characteristics of a linear phase filter, particularly regarding its phase delay and group delay.

Step 2: Relevant Concepts

1. Phase Delay - The delay introduced to each frequency component of the input signal.
2. Group Delay - The delay of the amplitude envelopes of the signal's frequency components.

For a filter to be classified as a linear phase filter, it's essential that the phase and group delay are consistent across all frequencies.

Step 3: Analysis and Detail

• In a linear phase filter, the delay is consistent, meaning it does not vary with frequency.
• Therefore, both phase delay and group delay would be constant.

Step 4: Verify and Summarize

Since both the phase delay and the group delay of a linear phase filter are invariant with respect to frequency, we can conclude that they maintain a constant value.

Final Answer

Constant