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

The correct answer is Constant.

Explanation:

A linear phase filter is characterized by a phase response that is a linear function of frequency. This means that the phase delay and the group delay are constant across all frequencies. In other words, signals that pass through the filter are delayed by the same amount of time, regardless of their frequency components. This property is essential in applications where it is important to preserve the shape of a signal's waveform, such as in audio processing and communication systems. A constant phase delay ensures that all frequency components of a signal arrive at the output of the filter at the same time, thus maintaining the original waveform shape without introducing distortion.