Filters attenuate gradually over a frequency range rather than cutting sharply

Evidence

Note that although practical filters have specified cutoff frequencies that are determined by their design, they do not cut off instantly as the frequency changes. Instead, they take a finite frequency range to attenuate the signal. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 471

Categorization

• XREF: connects to: Practical filters attenuate over a finite frequency range rather than cutting off instantly. — David Howard, Jamie Angus, coustics and Psychoacoustics, 469; A filter’s transition region can audibly affect frequencies up to an octave away — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2410; Real filters affect frequencies up to an octave from their cutoff point (+2 more)

Broader Connections

• Practical filters attenuate over a finite frequency range rather than cutting off instantly. #corroborates (1.00) — David Howard, Jamie Angus, coustics and Psychoacoustics, 469
• A filter’s transition region can audibly affect frequencies up to an octave away #expands (0.95) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2410
• Real filters affect frequencies up to an octave from their cutoff point #expands (0.95)
• Filter transition regions can extend a full octave from the cut-off frequency. #corroborates (0.92)
• Equalization selectively boosts or cuts frequencies rather than removing them #exemplifies (0.72) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2419