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Phase response information


In signal processing, phase response is the relationship between the phase of a sinusoidal input and the output signal passing through any device that accepts input and produces an output signal, such as an amplifier or a filter.[1]

Amplifiers, filters, and other devices are often categorized by their amplitude and/or phase response. The amplitude response is the ratio of output amplitude to input, usually a function of the frequency. Similarly, phase response is the phase of the output with the input as reference. The input is defined as zero phase. A phase response is not limited to lying between 0° and 360°, as phase can accumulate to any amount of time.

  1. ^ Smith, J.O. "Introduction to Digital Filters with Audio Applications". JOS. J.O. Smith. Retrieved 1 February 2019.

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Phase response

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In signal processing, phase response is the relationship between the phase of a sinusoidal input and the output signal passing through any device that...

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Phase response curve

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A phase response curve (PRC) illustrates the transient change (phase response) in the cycle period of an oscillation induced by a perturbation as a function...

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Minimum phase

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all-pass and a minimum phase system. The system function is then the product of the two parts, and in the time domain the response of the system is the...

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Linear phase

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In signal processing, linear phase is a property of a filter where the phase response of the filter is a linear function of frequency. The result is that...

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Frequency response

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frequency response of a system is the quantitative measure of the magnitude and phase of the output as a function of input frequency. The frequency response is...

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Group delay and phase delay

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such as air or water. While a phase response describes phase shift in angular units (such as degrees or radians), the phase delay is in units of time and...

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Delayed sleep phase disorder

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Delayed sleep phase disorder (DSPD), more often known as delayed sleep phase syndrome and also as delayed sleep–wake phase disorder, is the delaying of...

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Phase resetting in neurons

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models utilize phase response (resetting) curves where the oscillation of a neuron is perturbed and the effect the perturbation has on the phase cycle of a...

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Response

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antiphon, a response to a psalm or other part of a religious service Response, a phase in emergency management Response rate (survey) Response, a print and...

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Phase distortion

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that occurs when (a) a filter's phase response is not linear over the frequency range of interest, that is, the phase shift introduced by a circuit or device...

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Bode plot

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shifted by a phase φ {\displaystyle \varphi } with respect to the input. It can be shown that the magnitude of the response is and that the phase shift is...

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Allergy

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to the dermis. After the chemical mediators of the acute response subside, late-phase responses can often occur. This is due to the migration of other leukocytes...

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Continuous phase modulation

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comparatively smoother phase trajectory, and thus, even greater spectral efficiency. One extremely popular form of partial-response CPM is GMSK, which is...

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Phases of clinical research

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"pre-marketing phase" because it actually measures consumer response to the drug.[citation needed] It is common practice that certain Phase III trials will...

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Finite impulse response

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In signal processing, a finite impulse response (FIR) filter is a filter whose impulse response (or response to any finite length input) is of finite...

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Phaser

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System console Xerox Phaser, a brand of printers Personnel Halting and Stimulation Response rifle (PHASR), a dazzler weapon Phaser, an insecticide containing...

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Butterworth filter

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stopband specification, but Butterworth filters have a more linear phase response in the passband than Chebyshev Type I/Type II and elliptic filters can...

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Flanging

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specific type of phase-shifting, or "phasing". In phasing, the signal is passed through one or more all-pass filters with non-linear phase response and then added...

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Circadian rhythm

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as feeding. Light resets the biological clock in accordance with the phase response curve (PRC). Depending on the timing, light can advance or delay the...

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Actogram

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translating the actogram's data into phase response curves (PRCs). PRCs are a way of showing the actogram's phase shifts in line graph form, shifting focus...

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Linear filter

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frequency response, that is, the magnitude of the transfer function | H ( ω ) | {\displaystyle |H(\omega )|} ; the importance of the phase of the transfer...

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Direct digital synthesis

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determined mainly by the phase response of the reconstruction filter. An ideal reconstruction filter with a linear phase response (meaning the output is...

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Audio crossover

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result in an output signal unchanged in frequency, relative levels, and phase response. This ideal performance can only be approximated. How to implement the...

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