square wave - definizione. Che cos'è square wave
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Cosa (chi) è square wave - definizione

TYPE OF NON-SINUSOIDAL WAVEFORM
Sqaure wave; Square waves; Square Wave; Squarewave; Step wave
  • Graph showing the first 3 terms of the Fourier series of a square wave
  • (Odd) harmonics of a 1000 Hz square wave
  • The six arrows represent the first six terms of the Fourier series of a square wave. The two circles at the bottom represent the exact square wave (blue) and its Fourier-series approximation (purple).

square wave         
¦ noun Electronics a periodic wave that varies abruptly in amplitude between two fixed values.
Square wave         
A square wave is a non-sinusoidal periodic waveform in which the amplitude alternates at a steady frequency between fixed minimum and maximum values, with the same duration at minimum and maximum. In an ideal square wave, the transitions between minimum and maximum are instantaneous.
Rademacher system         
Wikipedia talk:Articles for creation/Rademacher system
In mathematics, in particular in functional analysis, the Rademacher system, named after Hans Rademacher, is an incomplete orthogonal system of functions on the unit interval of the following form:

Wikipedia

Square wave

A square wave is a non-sinusoidal periodic waveform in which the amplitude alternates at a steady frequency between fixed minimum and maximum values, with the same duration at minimum and maximum. In an ideal square wave, the transitions between minimum and maximum are instantaneous.

The square wave is a special case of a pulse wave which allows arbitrary durations at minimum and maximum amplitudes. The ratio of the high period to the total period of a pulse wave is called the duty cycle. A true square wave has a 50% duty cycle (equal high and low periods).

Square waves are often encountered in electronics and signal processing, particularly digital electronics and digital signal processing. Its stochastic counterpart is a two-state trajectory.