photography, filter factor refers to the multiplicative amount of light a filter blocks. The table below illustrates the relationship between filter factor, the...

attenuation. A band-pass filter can be characterized by its Q factor. The Q-factor is the reciprocal of the fractional bandwidth. A high-Q filter will have a narrow...

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...

filter depends on the filter design. The filter is sometimes called a high-cut filter, or treble-cut filter in audio applications. A low-pass filter is...

inverse of a band-pass filter. A notch filter is a band-stop filter with a narrow stopband (high Q factor). Narrow notch filters (optical) are used in...

has an infinite quality factor. More generally, the output of a second-order low-pass filter with a very high quality factor responds to a step input...

numbers and some of their uses include: Filter factor Filter (photography) Filter (optics) "Kodak Wratten numbered filters offered by Tiffen". Tiffen. Archived...

The Butterworth filter is a type of signal processing filter designed to have a frequency response that is as flat as possible in the passband. It is also...

response, the Q (quality factor), and the tuned frequency can often be set with inexpensive variable resistors. In some active filter circuits, one parameter...

Compared to finite-order approximations of the Gaussian filter, the Bessel filter has better shaping factor, flatter phase delay, and flatter group delay than...

For statistics and control theory, Kalman filtering, also known as linear quadratic estimation, is an algorithm that uses a series of measurements observed...

anti-aliasing filter. Let M/L denote the decimation factor, where: M, L ∈ Z {\displaystyle \mathbb {Z} } ; M > L. Increase (resample) the sequence by a factor of...

configuration. It is essentially used when precise Q factor is required, as other multi-order filters are unable to provide. The most common implementation...

cascaded integrator–comb filter). This filter can be used for crude but fast and easy downsampling (a.k.a. decimation) by a factor of N . {\displaystyle...

utility of a prototype filter comes from the property that all these other filters can be derived from it by applying a scaling factor to the components of...

Electronic filters are a type of signal processing filter in the form of electrical circuits. This article covers those filters consisting of lumped electronic...

The raised-cosine filter is a filter frequently used for pulse-shaping in digital modulation due to its ability to minimise intersymbol interference (ISI)...

A Bloom filter is a space-efficient probabilistic data structure, conceived by Burton Howard Bloom in 1970, that is used to test whether an element is...

VCVS filter allows high Q factor and passband gain without the use of inductors. A VCVS filter also has the advantage of independence: VCVS filters can...

upsampling factor, where L > M. Upsample by a factor of L Downsample by a factor of M Upsampling requires a lowpass filter after increasing the data rate, and downsampling...

also be used to make filters. The unloaded quality factor of the resonators being used will generally set the selectivity the filter can achieve. The book...

An anti-aliasing filter (AAF) is a filter used before a signal sampler to restrict the bandwidth of a signal to satisfy the Nyquist–Shannon sampling theorem...

band-pass filter, band-stop filter, low-pass filter or high-pass filter. The tuning application, for instance, is an example of band-pass filtering. The RLC...

in an LC filter section (creating an RC filter section). This has the effect of reducing the DC output as well as ripple. The ripple factor is γ = V r...

Chebyshev filters are analog or digital filters that have a steeper roll-off than Butterworth filters, and have either passband ripple (type I) or stopband...

Recursive least squares (RLS) is an adaptive filter algorithm that recursively finds the coefficients that minimize a weighted linear least squares cost...

subjects lit by blue sky. Filter factor Infrared filter Neutral-density filter Polarizer UV filter "The 3 Best Lens Filters for Landscape Photography"...

when the resonance or Q factor of the cutoff frequency of the filter is set high enough that the internal feedback causes the filter circuitry to become a...

vessels to filter drinking water, wine and other liquids. A sand bed filter is a kind of depth filter. Broadly, there are two types of filters for separating...

and its high Q factor allow crystal filters to have precise center frequencies and steep band-pass characteristics. Typical crystal filter attenuation in...