Which of the following is generally true of Finite Impulse Response (FIR) filters?
FIR filters can delay all frequency components of the signal by the same amount✓Правильный ответ
FIR filters are easier to implement for a given set of passband rolloff requirements
FIR filters can respond faster to impulses
All these choices are correct
Объяснение
A finite impulse response filter with symmetric coefficients has exactly linear phase, meaning every frequency component is delayed by the same constant time and the waveform shape is preserved. IIR filters reach a given rolloff with far less computation, so FIR is not the easier or faster choice.