photography, filterfactor refers to the multiplicative amount of light a filter blocks. The table below illustrates the relationship between filterfactor, the...
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...
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...
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...
response, the Q (quality factor), and the tuned frequency can often be set with inexpensive variable resistors. In some active filter circuits, one parameter...
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...
For statistics and control theory, Kalman filtering, also known as linear quadratic estimation, is an algorithm that uses a series of measurements observed...
Compared to finite-order approximations of the Gaussian filter, the Bessel filter has better shaping factor, flatter phase delay, and flatter group delay than...
Electronic filters are a type of signal processing filter in the form of electrical circuits. This article covers those filters consisting of lumped electronic...
configuration. It is essentially used when precise Q factor is required, as other multi-order filters are unable to provide. The most common implementation...
and its high Q factor allow crystal filters to have precise center frequencies and steep band-pass characteristics. Typical crystal filter attenuation in...
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...
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...
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...
numbers and some of their uses include: FilterfactorFilter (photography) Filter (optics) "Kodak Wratten numbered filters offered by Tiffen". Tiffen. Archived...
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...
Recursive least squares (RLS) is an adaptive filter algorithm that recursively finds the coefficients that minimize a weighted linear least squares cost...
In signal processing, a filter bank (or filterbank) is an array of bandpass filters that separates the input signal into multiple components, each one...
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...
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...