narrow-cut filter - определение. Что такое narrow-cut filter
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Что (кто) такое narrow-cut filter - определение

FILTER THAT PASSES SIGNALS WITH A FREQUENCY HIGHER THAN A CERTAIN CUTOFF FREQUENCY, AND ATTENUATES SIGNALS WITH LOWER FREQUENCIES
Highpass filter; Hi pass filter; Low cut filter; Low-cut filter; Bass cut filter; Bass-cut filter; Rumble filter; Highpass; High pass filter; High-pass; Bass blocker; Bass blockers; High-pass filters; High-pass filter (digital image processing); Subsonic filter
  • A 75 Hz "low cut" filter from an input channel of a [[Mackie]] 1402 [[mixing console]] as measured by [[Smaart]] software. This high-pass filter has a slope of 18 dB per octave.
  • Figure 2: An active high-pass filter
  • Figure 1: A passive, analog, first-order high-pass filter, realized by an [[RC circuit]]
  • Ideal high-pass filter frequency response
Найдено результатов: 1385
high-pass         
¦ adjective Electronics (of a filter) transmitting all frequencies above a certain value.
High-pass filter         
A high-pass filter (HPF) is an electronic filter that passes signals with a frequency higher than a certain cutoff frequency and attenuates signals with frequencies lower than the cutoff frequency. The amount of attenuation for each frequency depends on the filter design.
Photographic filter         
  • The 80A filter, mainly used to correct for the excessive redness of [[tungsten]] lighting, can also be used to oversaturate scenes that already have blue. The photo on the left was shot with a polarizer, while the one on the right was shot with a polarizer and an 80A filter.
  • Effects of using a polarizer and a red filter in black-and-white photography
  • An extreme case: a Nikon D700 with a smashed filter which may have saved the Nikkor lens beneath. Usually, all that can reasonably be expected is protection from scratches, nicks and airborne contaminants.
  • Polarizing filter, Atlantic Ocean 1989
  • The ''LOMO effect'' imitates photos made with a low-cost Russian camera brand, named "LOMO". It is approximated by saturated central colors, blurred periphery, and darkened corners and edges ([[vignetting]]).}} effect.
CAMERA ACCESSORY CONSISTING OF AN OPTICAL FILTER
Daylight filter; Filter (photography); Lens filter; Filter ring; Filter mount; Filter thread; Cross screen filter; Photographic filters; Red Black and White filter; Camera filter; Series filter
In photography and cinematography, a filter is a camera accessory consisting of an optical filter that can be inserted into the optical path. The filter can be of a square or oblong shape and mounted in a holder accessory, or, more commonly, a glass or plastic disk in a metal or plastic ring frame, which can be screwed into the front of or clipped onto the camera lens.
Elliptic filter         
  • The frequency response of a fourth-order elliptic low-pass filter with '''ε''' = 0.5 and '''ξ''' = 1.05. Also shown are the minimum gain in the passband and the maximum gain in the stopband, and the transition region between normalized frequency 1 and '''ξ'''
  • A closeup of the transition region of the above plot.
  • Log of the absolute value of the gain of an 8th order elliptic filter in [[complex frequency space]] (s = σ + jω) with ε = 0.5, ξ = 1.05 and ω<sub>0</sub> = 1. The white spots are poles and the black spots are zeroes. There are a total of 16 poles and 8 double zeroes. What appears to be a single pole and zero near the transition region is actually four poles and two double zeroes as shown in the expanded view below. In this image, black corresponds to a gain of 0.0001 or less and white corresponds to a gain of 10 or more.
  • An expanded view in the transition region of the above image, resolving the four poles and two double zeroes.
  • upright=3.6
SIGNAL PROCESSING FILTER
Cauer filter; Elliptical filter; Equiripple filter; Eliptic filter
An elliptic filter (also known as a Cauer filter, named after Wilhelm Cauer, or as a Zolotarev filter, after Yegor Zolotarev) is a signal processing filter with equalized ripple (equiripple) behavior in both the passband and the stopband. The amount of ripple in each band is independently adjustable, and no other filter of equal order can have a faster transition in gain between the passband and the stopband, for the given values of ripple (whether the ripple is equalized or not).
Electronic filter         
  • A low-pass electronic filter realised by an [[RC circuit]]
  • Constant k filter response with 5 elements
  • center
  • High-pass T filter
  • Low-pass π filter
  • RL filter frequency response
  • Zobel network (constant R) filter, 5 sections
ELECTRONIC CIRCUIT THAT REMOVES UNWANTED COMPONENTS FROM THE SIGNAL, OR ENHANCES WANTED ONES, OR BOTH
Electronic filters; Filter (circuits); Pi filter; Pi Filter; Frequency filter; BAW filter
Electronic filters are a type of signal processing filter in the form of electrical circuits. This article covers those filters consisting of lumped electronic components, as opposed to distributed-element filters.
Optical filter         
  • Coloured and [[neutral-density filter]]s
DEVICE THAT SELECTIVELY TRANSMITS LIGHT OF CERTAIN WAVELENGTHS
Optic filter; Wedge filter; Glass filter; Optical Filters; Optical band-pass filter; Optical bandpass filter; Filter (optics); Light filter
An optical filter is a device that selectively transmits light of different wavelengths, usually implemented as a glass plane or plastic device in the optical path, which are either dyed in the bulk or have interference coatings. The optical properties of filters are completely described by their frequency response, which specifies how the magnitude and phase of each frequency component of an incoming signal is modified by the filter.
Infrared cut-off filter         
  • Infrared Photography, [[Ibirapuera Park]]
  • IR transmitting filters, used in photography.
OPTICAL FITERS THAT BLOCK NEAR-INFRARED WHILE PASSING VISIBLE LIGHT
IR filter; Infrared filter; IR Cut
Infrared cut-off filters, sometimes called IR filters or heat-absorbing filters, are designed to reflect or block near-infrared wavelengths while passing visible light. They are often used in devices with bright incandescent light bulbs (such as slide and overhead projectors) to prevent unwanted heating.
Air filter         
DEVICE COMPOSED OF FIBROUS MATERIALS WHICH REMOVES SOLID PARTICULATES FROM THE AIR
Filter (air); Air cleaner; Air filtration; Air filters; Universal air filter; Cabin air filter; Dust filter; Air Filters
A particulate air filter is a device composed of fibrous, or porous materials which removes solid particulates such as dust, pollen, mold, and bacteria from the air. Filters containing an adsorbent or catalyst such as charcoal (carbon) may also remove odors and gaseous pollutants such as volatile organic compounds or ozone.
air filter         
DEVICE COMPOSED OF FIBROUS MATERIALS WHICH REMOVES SOLID PARTICULATES FROM THE AIR
Filter (air); Air cleaner; Air filtration; Air filters; Universal air filter; Cabin air filter; Dust filter; Air Filters
¦ noun a device for filtering particles from the air passing into an internal-combustion engine.
Narrow-gauge railway         
  • lk=on}}-gauge track.
RAIL TRACK GAUGES NARROWER THAN STANDARD TRACK GAUGE (1435 MM, 4 FT 8 1⁄2 IN)
Narrow Gauge; Narrow-gauge; Narrow gauge railroad; Narrow-gauge railroad; Narrow gauge; Narrow gauge railways; Narrow Gauge Railways; Narrow-gauge railways; Narrow gauge rail transport; Narrow railway gauge; Narrow Guage; Narrow gauge line; Narrow gauge steam railway; Medium gauge railway; Four foot gauge railway; Four foot gauge railways; Narrow gauge railway; Narrow-gauge rail transport
A narrow-gauge railway (narrow-gauge railroad in the US) is a railway with a track gauge narrower than standard . Most narrow-gauge railways are between and .

Википедия

High-pass filter

A high-pass filter (HPF) is an electronic filter that passes signals with a frequency higher than a certain cutoff frequency and attenuates signals with frequencies lower than the cutoff frequency. The amount of attenuation for each frequency depends on the filter design. A high-pass filter is usually modeled as a linear time-invariant system. It is sometimes called a low-cut filter or bass-cut filter in the context of audio engineering. High-pass filters have many uses, such as blocking DC from circuitry sensitive to non-zero average voltages or radio frequency devices. They can also be used in conjunction with a low-pass filter to produce a band-pass filter.

In the optical domain filters are often characterised by wavelength rather than frequency. High-pass and low-pass have the opposite meanings, with a "high-pass" filter (more commonly "long-pass") passing only longer wavelengths (lower frequencies), and vice versa for "low-pass" (more commonly "short-pass").