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harmonic input

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  • Harmonic series (music) — Harmonic series of a string. Pitched musical instruments are often based on an approximate harmonic oscillator such as a string or a column of air, which oscillates at numerous frequencies simultaneously. At these resonant frequencies, waves… …   Wikipedia

  • Harmonic oscillator — This article is about the harmonic oscillator in classical mechanics. For its uses in quantum mechanics, see quantum harmonic oscillator. Classical mechanics …   Wikipedia

  • Harmonic drive — A harmonic drive is an input/output gearing mechanism. It is typically used for gearing reduction, but may also be used to increase rotational speed or for differential gearing. Very high gear reduction ratios are possible in a small volume… …   Wikipedia

  • Harmonic Drive — ▪ machine component       mechanical speed changing device, invented in the 1950s, that operates on a different principle from, and has capabilities beyond the scope of, conventional speed changers. It consists of a thin ring that deflects… …   Universalium

  • harmonic bounding — noun A situation where one input to output mapping pair receives a set of constraint violations that is a proper subset of the set of constraints violations received by a different input output pair …   Wiktionary

  • Harmonic distortion — A&V The production of harmonics at the output of a circuit when period wave is applied to its input. The level of the distortion is usually expressed as a percentage of the level of the input …   Audio and video glossary

  • harmonic distortion — noun : distortion in which harmonics of an input signal are produced in an amplifier and appear in the output along with the amplified input signal …   Useful english dictionary

  • Harmonic Distortion — F/A/V Acoustic distortion characterized by unwanted changes between input and output at a given frequency. (Acoustics) …   Audio and video glossary

  • harmonic distortion —    Problem arising when harmonics of the input frequency appear in the output channel …   IT glossary of terms, acronyms and abbreviations

  • Total harmonic distortion — The total harmonic distortion, or THD, of a signal is a measurement of the harmonic distortion present and is defined as the ratio of the sum of the powers of all harmonic components to the power of the Fundamental frequency.Lesser THD, for… …   Wikipedia

  • Electronic amplifier — A practical amplifier circuit An electronic amplifier is a device for increasing the power of a signal. It does this by taking energy from a power supply and controlling the output to match the input signal shape but with a larger amplitude. In… …   Wikipedia

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