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  2. Clipping (signal processing) - Wikipedia

    en.wikipedia.org/wiki/Clipping_(signal_processing)

    Clipping can be detected by viewing the signal (on an oscilloscope, for example), and observing that the tops and bottoms of waves aren't smooth anymore. When working with images, some tools can highlight all pixels that are pure white, allowing the user to identify larger groups of white pixels and decide if too much clipping has occurred.

  3. Optical autocorrelation - Wikipedia

    en.wikipedia.org/wiki/Optical_autocorrelation

    Classification of the different kinds of optical autocorrelation. In optics, various autocorrelation functions can be experimentally realized. The field autocorrelation may be used to calculate the spectrum of a source of light, while the intensity autocorrelation and the interferometric autocorrelation are commonly used to estimate the duration of ultrashort pulses produced by modelocked lasers.

  4. Spectrum analyzer - Wikipedia

    en.wikipedia.org/wiki/Spectrum_analyzer

    An alternative technique, total harmonic distortion measurement, cancels out the fundamental with a notch filter and measures the total remaining signal, which is total harmonic distortion plus noise; it does not give the harmonic-by-harmonic detail of an analyser. Spectrum analyzers are also used by audio engineers to assess their work.

  5. Distortionmeter - Wikipedia

    en.wikipedia.org/wiki/Distortionmeter

    A distortionmeter is a level meter with two switchable parallel circuits at the input. The first circuit measures the total signal at the output of a system. (For low distortion levels this will be almost equal to fundamental). That value is adjusted to read 100% or, equivalently, to 0 dB.

  6. Harmonic measure - Wikipedia

    en.wikipedia.org/wiki/Harmonic_measure

    The term harmonic measure was introduced by Rolf Nevanlinna in 1928 for planar domains, [1] [2] although Nevanlinna notes the idea appeared implicitly in earlier work by Johansson, F. Riesz, M. Riesz, Carleman, Ostrowski and Julia (original order cited). The connection between harmonic measure and Brownian motion was first identified by ...

  7. Total harmonic distortion analyzer - Wikipedia

    en.wikipedia.org/wiki/Total_harmonic_distortion...

    A total harmonic distortion analyzer calculates the total harmonic content of a sinewave with some distortion, expressed as total harmonic distortion (THD). A typical application is to determine the THD of an amplifier by using a very-low-distortion sinewave input and examining the output.

  8. 6 Christmas Collectibles That Could Be Worth a Fortune

    www.aol.com/6-christmas-collectibles-could-worth...

    Retired LEGO Christmas sets sell for hundreds of dollars on sites like eBay and StockX. Coca-Cola Christmas Collectibles. Vintage Coca-Cola Christmas items, such as ornaments and other decor items ...

  9. Unusual eBay listings - Wikipedia

    en.wikipedia.org/wiki/Unusual_eBay_listings

    The price had risen to $3,000 before eBay closed the auction. [8] [9] In May 2006, the remains of U.S. Fort Montgomery, a stone fortification in upstate New York built in 1844, were put up for auction on eBay. The first auction ended on June 5, 2006, with a winning bid of US$5,000,310.

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