39 relations: Analogue electronics, Astronomy, Atmospheric sciences, Atomic line filter, Attenuation, Audio crossover, Band-stop filter, Bandwidth (signal processing), Capacitor, Cutoff frequency, Cyclone, David H. Hubel, Decade (log scale), Decibel, Electrical network, Filter (signal processing), Frequency, Gabor filter, High-pass filter, Inductor, Low-pass filter, Main sequence, Multiplicative inverse, Neuroscience, Octave (electronics), Optical filter, Passband, Periodic function, Q factor, Redshift, Resistor, RLC circuit, Roll-off, Sallen–Key topology, Simple cell, Sinc filter, Sound pressure, Torsten Wiesel, Visual cortex.
Analogue electronics (also spelled analog electronics) are electronic systems with a continuously variable signal, in contrast to digital electronics where signals usually take only two levels.
Astronomy (from ἀστρονομία) is a natural science that studies celestial objects and phenomena.
Atmospheric science is the study of the Earth's atmosphere, its processes, the effects other systems have on the atmosphere, and the effects of the atmosphere on these other systems.
An atomic line filter (ALF) is an advanced optical band-pass filter used in the physical sciences for filtering electromagnetic radiation with precision, accuracy, and minimal signal strength loss.
In physics, attenuation or, in some contexts, extinction is the gradual loss of flux intensity through a medium.
Audio crossovers are a type of electronic filter circuitry used in a range of audio applications, to split up an audio signal into two or more frequency ranges, so that the signals can be sent to drivers that are designed for different frequency ranges.
In signal processing, a band-stop filter or band-rejection filter is a filter that passes most frequencies unaltered, but attenuates those in a specific range to very low levels.
Bandwidth is the difference between the upper and lower frequencies in a continuous band of frequencies.
A capacitor is a passive two-terminal electrical component that stores potential energy in an electric field.
In physics and electrical engineering, a cutoff frequency, corner frequency, or break frequency is a boundary in a system's frequency response at which energy flowing through the system begins to be reduced (attenuated or reflected) rather than passing through.
In meteorology, a cyclone is a large scale air mass that rotates around a strong center of low atmospheric pressure.
David Hunter Hubel (February 27, 1926 – September 22, 2013) was a Canadian neurophysiologist noted for his studies of the structure and function of the visual cortex.
One decade (symbol dec) is a unit for measuring frequency ratios on a logarithmic scale, with one decade corresponding to a ratio of 10 between two frequencies (an order of magnitude difference).
The decibel (symbol: dB) is a unit of measurement used to express the ratio of one value of a physical property to another on a logarithmic scale.
An electrical network is an interconnection of electrical components (e.g. batteries, resistors, inductors, capacitors, switches) or a model of such an interconnection, consisting of electrical elements (e.g. voltage sources, current sources, resistances, inductances, capacitances).
In signal processing, a filter is a device or process that removes some unwanted components or features from a signal.
Frequency is the number of occurrences of a repeating event per unit of time.
In image processing, a Gabor filter, named after Dennis Gabor, is a linear filter used for texture analysis, which means that it basically analyses whether there are any specific frequency content in the image in specific directions in a localized region around the point or region of analysis.
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.
An inductor, also called a coil, choke or reactor, is a passive two-terminal electrical component that stores energy in a magnetic field when electric current flows through it.
A low-pass filter (LPF) is a filter that passes signals with a frequency lower than a certain cutoff frequency and attenuates signals with frequencies higher than the cutoff frequency.
In astronomy, the main sequence is a continuous and distinctive band of stars that appear on plots of stellar color versus brightness.
In mathematics, a multiplicative inverse or reciprocal for a number x, denoted by 1/x or x−1, is a number which when multiplied by x yields the multiplicative identity, 1.
Neuroscience (or neurobiology) is the scientific study of the nervous system.
In electronics, an octave (symbol oct) is a doubling or halving of a frequency.
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.
A passband is the range of frequencies or wavelengths that can pass through a filter.
In mathematics, a periodic function is a function that repeats its values in regular intervals or periods.
In physics and engineering the quality factor or Q factor is a dimensionless parameter that describes how underdamped an oscillator or resonator is, and characterizes a resonator's bandwidth relative to its centre frequency.
In physics, redshift happens when light or other electromagnetic radiation from an object is increased in wavelength, or shifted to the red end of the spectrum.
A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element.
An RLC circuit is an electrical circuit consisting of a resistor (R), an inductor (L), and a capacitor (C), connected in series or in parallel.
Roll-off is the steepness of a transmission function with frequency, particularly in electrical network analysis, and most especially in connection with filter circuits in the transition between a passband and a stopband.
The Sallen–Key topology is an electronic filter topology used to implement second-order active filters that is particularly valued for its simplicity.
A simple cell in the primary visual cortex is a cell that responds primarily to oriented edges and gratings (bars of particular orientations).
In signal processing, a sinc filter is an idealized filter that removes all frequency components above a given cutoff frequency, without affecting lower frequencies, and has linear phase response.
Sound pressure or acoustic pressure is the local pressure deviation from the ambient (average or equilibrium) atmospheric pressure, caused by a sound wave.
Torsten Nils Wiesel (born 3 June 1924) is a Swedish neurophysiologist.
The visual cortex of the brain is a part of the cerebral cortex that processes visual information.