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modulation analysis

См. также в других словарях:

  • Modulation space — Modulation spaces[1] are a family of Banach spaces defined by the behavior of the short time Fourier transform with respect to a test function from the Schwartz space. They were originally proposed by Hans Georg Feichtinger and are recognized to… …   Wikipedia

  • Modulation (music) — Key change example: C major to C minor. In music, modulation is most commonly the act or process of changing from one key (tonic, or tonal center) to another. This may or may not be accompanied by a change in key signature. Modulations articulate …   Wikipedia

  • Modulation transfer function (infrared imaging) — The Modulation Transfer Function (MTF) is used to approximate the position of best focus of an infrared imaging system. In an imaging system, best focus is typically achieved when the MTF is between 0.4 and 0.6; most often at 0.5 (50% cutoff… …   Wikipedia

  • Delta-sigma modulation — Delta sigma (ΔΣ; or sigma delta, ΣΔ) modulation is a method for encoding high resolution or analog signals into lower resolution digital signals. The conversion is done using error feedback, where the difference between the two signals is… …   Wikipedia

  • Time-frequency analysis — is a body of techniques for characterizing and manipulating signals whose component frequencies vary in time, such as transient signals.Whereas the technique of the Fourier transform can be used to obtain the frequency spectrum of a signal whose… …   Wikipedia

  • Differential pulse-code modulation — (DPCM) is a signal encoder that uses the baseline of pulse code modulation (PCM) but adds some functionalities based on the prediction of the samples of the signal. The input can be an analog signal or a digital signal. If the input is a… …   Wikipedia

  • Quadrature amplitude modulation — (QAM) (Pronounced IPA|kwa:m) is a modulation scheme which conveys data by changing ( modulating ) the amplitude of two carrier waves. These two waves, usually sinusoids, are out of phase with each other by 90° and are thus called quadrature… …   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

  • Voice stress analysis — (VSA) technology is said to record psychophysiological stress responses that are present in human voice, when a person suffers psychological stress in response to a stimulus (question) and where the consequences may be dire for the subject being… …   Wikipedia

  • Thermomechanical analysis — Introduction and definition of thermal analysis techniquesThermomechanical analysis (TMA) is one of a group of techniques termed thermal analysis (TA). The terminology of thermal analysis is recommended by the International Confederation of… …   Wikipedia

  • Eight-to-Fourteen Modulation — (EFM) is a data encoding technique used by CDs and pre Hi MD MiniDiscs. EFM and EFMPlus were both invented by Kees A. Schouhamer Immink. Technological classification EFM [US patent|4,501,000, EFM Patent, applied in Compact Disc, CD R, MiniDisc.]… …   Wikipedia

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