proper frequency
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Frequency modulation — See also: Amplitude modulation In telecommunications, frequency modulation (FM) conveys information over a carrier wave by varying its frequency (contrast this with amplitude modulation, in which the amplitude of the carrier is varied while its… … Wikipedia
Frequency modulation synthesis — In audio and music frequency modulation synthesis (or FM synthesis) is a form of audio synthesis where the timbre of a simple waveform is changed by frequency modulating it with a modulating frequency that is also in the audio range, resulting in … Wikipedia
Frequency management challenges in military forces — Every military force has a goal to ensure and have permanent access in the spectrum of radio frequencies to meet its vital military tasks. This is based on strategies, doctrines and different policies that military forces adhere to.The nature of… … Wikipedia
Proper transfer function — In control theory, a proper transfer function is a transfer function in which the degree of the numerator does not exceed the degree of the denominator. Example The following transfer function is proper: extbf{G}(s) = frac{ extbf{N}(s)}{… … Wikipedia
Motions in the time-frequency distribution — Several techniques can be used to move signals in the time frequency distribution. Similar to computer graphic techniques, signals can be subjected to horizontal shifting, vertical shifting, dilation (scaling), shearing, and rotation. These… … Wikipedia
Bilinear time–frequency distribution — Bilinear time–frequency distributions, or quadratic time–frequency distributions, arise in a sub field field of signal analysis and signal processing called time–frequency signal processing, and, in the statistical analysis of time series data.… … Wikipedia
Effective frequency — In advertising, the effective frequency is the number of times a person must be exposed to an advertising message before a response is made and before exposure is considered wasteful.The subject on effective frequency is quite controversial. Many … Wikipedia
Strictly proper — In control theory, a strictly proper transfer function is a transfer function where the degree of the numerator is less than the degree of the denominator. Example The following transfer function is not strictly proper: extbf{G}(s) = frac{… … Wikipedia
MPEG-1 — Moving Picture Experts Group Phase 1 (MPEG 1) Filename extension .mpg, .mpeg, .mp1, .mp2, .mp3, .m1v, .m1a, .m2a, .mpa, .mpv Internet media type audio/mpeg, video/mpeg Developed by ISO, IEC Type of format audio, vid … Wikipedia
Negative index metamaterials — A negative index metamaterial causes light to refract, or bend, differently than in more common positive refractive index materials. Negative index metamaterials or negative index materials (NIM) are artificial structures where the refractive… … Wikipedia
Doubochinski's pendulum — Fig.1. Schematics of the Doubochinski’s pendulum Doubochinski’s pendulum is a classical oscillator interacting with a high frequency field in such a way that the oscillator takes on a discrete set of stable regimes of oscillation, each at a… … Wikipedia
