The frequency above which a low pass filter will start attenuating signals present at its input. Abbreviated Fc.
The signal frequency output of a filter that marks the transition from no attenuation to attenuation. Usually it is defined as the point at which the amplitude of the signal is reduced by 3 dB after passing through the filter.
Normally defined as the frequency where the output from a filter has fallen by 3dB from the maximum level obtainable through the filter
The frequency at which the ouput voltage of a filter is 70.7% of the maximum output voltage.
The frequency below which electromagnetic energy will not propagate readily in a waveguide.
The frequency that is identified with the transition between a pass band and an adjacent attenuation band of a system or transducer.
That frequency beyond which no appreciable energy is transmitted. It may refer to either an upper or lower limit of a frequency band.
The point in the frequency spectrum beyond which a synthesizer's filter attenuates the audio signal being sent through it.
Frequency at which the power gain of an amplifier falls below 50% of maximum.
1. The frequency either above which or below which the output of a circuit, such as a line, amplifier, or filter, is reduced to a specified level. 2. The frequency below which a radio wave fails to penetrate a layer of the ionosphere at the incidence angle required for transmission between two specified points by reflection from the layer.
The frequency at which the attenuation of a waveguide increases sharply and below which a traveling wave in a given mode cannot be maintained. A frequency with a half wavelength that is greater than the wide dimension of a waveguide.
The term cutoff frequency is applicable to a wide range of systems. However, its meaning is consistent in a general sense across fields of study. The cutoff frequency of a system is a boundary in the input spectrum at which energy entering the system begins to be attenuated or reflected instead of transmitted.