A circuit that allows high frequencies to pass, but blocks low frequencies. Also called a "low-cut filter." High-pass filters are often found in A/V receivers and A/V controllers to keep bass out of the main speakers when using a subwoofer.
Unlike a crossover network, filters allow some frequencies to pass while simply blocking others. As the name implies, a high-pass filter allows the high frequencies to pass to the appropriate driver or amplifier. In better car stereo systems, separate amplifiers may be used for each type of speaker driver, so a high pass filter would be used to send signals to the amplifier that drives the tweeters or perhaps the tweeters and midrange drivers.
A circuit so designed that it will transfer signals of high frequency while attenuating those of low frequency.
A filter circuit that rejects signals below and passes signals above a certain cut-off frequency.
A spatial filter which selectively enhances contrast variations with high spatial frequencies in an image. It improves the sharpness of the images, and is a method of edge enhancement.
A filter designed to pass high frequencies and reject low frequencies.
This filter passes all frequencies above and rejects all frequencies below a specified CORNER FREQUENCY.
A signal filter which passes all frequencies above a certain frequency, and attenuates all lower frequencies.
An acoustical device or electrical network that blocks frequencies below a designated point, and allows higher frequencies to pass.
A filter having a passband extending from some finite cut-off frequency up to infinite frequency. Aka LCF (Low Cut Filter)
A high-pass filter allows "high" frequencies to be sent to the speakers, while it blocks frequencies below the crossover point.
A spatial filter that accentuates an image's high-frequency detail or attenuates the low-frequency detail. Contrast with low-pass filter, median filter.
A filter that passes frequencies above a given frequency and attenuates all others.
A device that rejects signals that are below a certain frequency (called the cut-off frequency) and passes signals with frequencies that are higher.
A filter with a transmission band starting at a lower cutoff frequency and extending to (theoretically) infinite frequency.
A tuned circuit designed to pass all frequencies above a desnigated cut-off frequency. Frequencies below the cut-off frequency are rejected or attenuated
Within an audio crossover network, the electronic or passive circuitry that allows the high frequencies to go to a speaker system or amplifier. See also Low-pass filter.
A circuit that allows high frequencies to pass but rolls off the low frequencies. When adding a subwoofer it is often desirable to roll-off the low frequencies to the main amplifiers and speakers. This will allow the main speakers to play louder with less distortion. High-pass filters used at speaker level are usually not very effective unless properly designed for a specific main speaker (see impedance below).
A type of Filter used to eliminate low-range frequencies resulting in a crisper sound, good for creating percussion sounds with distinctive high ranges.
A filter which is blocked at low wavelength, whose transmission spectrum extends from a low cut on wavelength up in wavelength to the maximum pass wavelength of the detector.
The characteristic of a certain type of filter whereby higher frequencies are passed and the lower frequencies are rejected. A filter designed to pass all frequencies above its cutoff frequency.
A filter that passes a majority of the high frequencies on to the next circuit and rejects, or attenuates, the lower frequencies. Also called a LOW-FREQUENCY DISCRIMINATOR.
a filter designed to pass high frequency signals, while blocking lower frequency signals.
A high-pass filter is a filter that passes high frequencies well, but attenuates (or reduces) frequencies lower than the cutoff frequency. The actual amount of attenuation for each frequency varies from filter to filter. It is sometimes called a low-cut filter; the terms bass-cut filter or rumble filter are also used in audio applications.