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2. Cutoff frequency - Wikipedia

   en.wikipedia.org/wiki/Cutoff_frequency

   In electronics, cutoff frequency or corner frequency is the frequency either above or below which the power output of a circuit, such as a line, amplifier, or electronic filter has fallen to a given proportion of the power in the passband.

3. Roll-off - Wikipedia

   en.wikipedia.org/wiki/Roll-off

   For some filter classes, such as the Butterworth filter, the insertion loss is still monotonically increasing with frequency and quickly asymptotically converges to a roll-off of 20n dB/decade, but in others, such as the Chebyshev or elliptic filter the roll-off near the cut-off frequency is much faster and elsewhere the response is anything ...

4. Cut-off (electronics) - Wikipedia

   en.wikipedia.org/wiki/Cut-off_(electronics)

   In electronics, cut-off is a state of negligible conduction that is a property of several types of electronic components when a control parameter (that usually is a well-defined voltage or electric current, but could also be an incident light intensity or a magnetic field), is lowered or increased past a value (the conduction threshold).

5. Transition band - Wikipedia

   en.wikipedia.org/wiki/Transition_band

   The transition band is defined by a passband and a stopband cutoff frequency or corner frequency. This is the area between where a filter "turns the corner" and where it "hits the bottom". An example of this can be taken from a low-pass filter , commonly used in audio systems to allow the bass signal to pass through to a subwoofer , and cut out ...

6. Audio filter - Wikipedia

   en.wikipedia.org/wiki/Audio_filter

   An audio filter is a frequency-dependent circuit, working in the audio frequency range, 0 Hz to 20 kHz. Audio filters can amplify (boost), pass or attenuate (cut) some frequency ranges. Audio filters can amplify (boost), pass or attenuate (cut) some frequency ranges.

7. High-pass filter - Wikipedia

   en.wikipedia.org/wiki/High-pass_filter

   In electronics, a filter is a two-port electronic circuit which removes frequency components from a signal (time-varying voltage or current) applied to its input port. A high-pass filter attenuates frequency components below a certain frequency, called its cutoff frequency, allowing higher frequency components to pass through.