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Signal theory

 

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Signal theory



 
 
See also Signalling theory
Signalling theory

Within evolutionary biology, signalling theory refers to a body of Theory#Theories as "models" work examining communication between individuals....
, a concept in evolutionary biology
Evolutionary biology

Evolutionary biology is a sub-field of biology concerned with the origin of species from a common descent and descent of species, as well as their evolution, multiplication and diversity over time....







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See also Signalling theory
Signalling theory

Within evolutionary biology, signalling theory refers to a body of Theory#Theories as "models" work examining communication between individuals....
, a concept in evolutionary biology
Evolutionary biology

Evolutionary biology is a sub-field of biology concerned with the origin of species from a common descent and descent of species, as well as their evolution, multiplication and diversity over time....


Signal theory is the theory of the engineering
Engineering

Engineering is the discipline and profession of applying Technology and science knowledge and utilizing natural laws and physical resources in order to design and implement materials, structures, machines, devices, systems, and process that safely realize a desired objective and meet specified criteria....
 discipline of signal processing
Signal processing

Signal processing is the analysis, interpretation, and manipulation of signal . Signals of interest include: audio signal processing, , time-varying measurement values and sensor data, for example biological data such as electrocardiograms, control system signals, telecommunication transmission signals such as radio signals, and many others....
. It provides mathematical approaches for use in a wide range of applications. Fields as far apart as statistical physics
Statistical physics

Statistical physics is the area of physics that uses methods of probability theory and statistics, and particularly the Mathematics tools for dealing with large populations, in solving physical problems....
 and op-amp electronics
Electronics

Electronics refers to the flow of charge through nonmetal electrical conductor , whereas electrical refers to the flow of charge through metal electrical conductor....
 share some of this material.

High-level aspects include:

  • Amplitude
    Amplitude

    Amplitude is the magnitude of change in the oscillating variable, with each oscillation, within an oscillating system. For instance, sound waves are oscillations in atmospheric pressure and their amplitudes are proportional to the change in pressure during one oscillation....
  • phase
    Phase (waves)

    The phase of an oscillation or wave is the fraction of a complete cycle corresponding to an offset in the displacement from a specified reference point at time t = 0....
  • resonance
    Resonance

    In physics, resonance is the tendency of a system to oscillate at maximum amplitude at certain Frequency, known as the system's resonance frequencies ....
  • Q (Q for "quality", means the strength of a resonance)
  • time constant
    Time constant

    In physics and engineering, the time constant usually denoted by the Greek language letter , , characterizes the frequency response of a first-order, LTI system theory system....
     (of a filter
    Electronic filter

    Electronic filters are electronic circuits which perform signal processing functions, specifically to remove unwanted frequency components from the signal and/or to enhance wanted ones....
    )
  • great-signal and small-signal bandwidth
  • maximum output swing
  • noise floor
    Noise floor

    In signal theory, the noise floor is the measure of the signal created from the sum of all the noise sources and unwanted signals within a measurement system....