Category:Filters

Systems which remove unwanted frequencies including digital filters, nonlinear filters and superconducting filters

Subcategories

• Channel bank filters - a filter that demultiplexes a group of communication channels, such as those in along a analog or digital telephone line
• Digital filters - electronic filters that perform mathematical operations on discrete-time signals to reduce or enhance aspects of those signals
• Equalizers - equipment that reduces distortion in audio frequencies by increasing or decreasing signal strength
• Filtering theory - the theory on the operation and optimization of filters
• Gabor filters - named after Dennis Gabor, linear filters used in image processing for edge detection
• IIR filters - or infinite impulse response filters, a filter which has an impulse response function that is non-zero over an infinite length of time, as opposed to finite impulse filters
• Kalman filters - an algorithm that provides an optimized estimate of a system's state (i.e. its position and velocity)
• Matched filters - originally known as a North filter, a filter which applies a known signal or template to an unknown signal to detect the presence of the template in the unknown signal
• Nonlinear filters - a signal processing device whose output is not a linear function of its input
• Power filters - filters which remove undesired frequencies or wavelengths from electrical power systems
• Resonator filters - the use of a resonator, such as a helical resonator, in filtering
• Superconducting filters - filters using superconducting materials
• Transversal filters - a nonrecursive filter using a tapped delay line to implement a basic filter equation