A High-Pass Filter is a circuit that only allows high-frequency signals to pass, and attenuates or reduces signals whose frequencies are below its cut-off frequency.
It is also referred to as a 'low-cut filter' or, when used in audio applications, as a 'bass-cut filter' or 'rumble filter'.
One common application of high-pass filters is for driving tweeters (speakers designed for high-pitch sounds), so as to block low-frequency signals that can interfere with or even damage the tweeter.
An ideal high-pass filter is one that completely blocks all frequencies below a given frequency, while allowing all those with higher frequencies to pass unchanged.
Of course, an ideal high-pass filter doesn't exist, so in the real world, the effectiveness and efficiency of a high-pass filter is described is terms of the level of attenuation of signals with frequencies below a cut-off frequency.
The cut-off frequency of a high-pass filter is the frequency at which the output voltage equals 70.7% of the input voltage.
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A High-Pass Filter is a circuit that only allows high-frequency signals to pass, and attenuates or reduces signals whose frequencies are below its cut-off frequency.
It is also referred to as a 'low-cut filter' or, when used in audio applications, as a 'bass-cut filter' or 'rumble filter'.
One common application of high-pass filters is for driving tweeters (speakers designed for high-pitch sounds), so as to block low-frequency signals that can interfere with or even damage the tweeter.
An ideal high-pass filter is one that completely blocks all frequencies below a given frequency, while allowing all those with higher frequencies to pass unchanged.
Of course, an ideal high-pass filter doesn't exist, so in the real world, the effectiveness and efficiency of a high-pass filter is described is terms of the level of attenuation of signals with frequencies below a cut-off frequency.
The cut-off frequency of a high-pass filter is the frequency at which the output voltage equals 70.7% of the input voltage.
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