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Decade (log scale) Four powers of 10 spanning a range of three decades: 1, 10, 100, 1000 (10, 10, 10, 10) Four grids spanning three decades of resolution: One thousand 0.001s, one-hundred 0.01s, ten 0.1s, one 1. One decade (symbol dec [1]) is a unit for measuring ratios on a logarithmic scale, with one decade corresponding to a ratio of 10 ...
Mel-frequency cepstrum. In sound processing, the mel-frequency cepstrum ( MFC) is a representation of the short-term power spectrum of a sound, based on a linear cosine transform of a log power spectrum on a nonlinear mel scale of frequency. Mel-frequency cepstral coefficients ( MFCCs) are coefficients that collectively make up an MFC. [1]
Absorbance. Absorbance is defined as "the logarithm of the ratio of incident to transmitted radiant power through a sample (excluding the effects on cell walls)". [1] Alternatively, for samples which scatter light, absorbance may be defined as "the negative logarithm of one minus absorptance, as measured on a uniform sample". [2]
The spectrum of a linear operator on R n is the set of eigenvalues of its matrix, and so is a finite set. As long as the origin is not in the spectrum (the matrix is invertible), the path condition from the previous paragraph is satisfied, and ln T is well-defined. The non-uniqueness of the matrix logarithm follows from the fact that one can ...
Spectrum TV Stream. Spectrum TV Stream is an American over-the-top internet television service owned by Charter Communications. The service – which is structured as a virtual multichannel video programming distributor – is only available to Charter Spectrum internet customers. It is designed as an alternative to other competing OTT skinny ...
Sand section of interest is located at bottom of log where the log moves to the left. Gamma ray logging is a method of measuring naturally occurring gamma radiation to characterize the rock or sediment in a borehole or drill hole. It is a wireline logging method used in mining, mineral exploration, water-well drilling, for formation evaluation ...
In Fourier analysis, the cepstrum ( / ˈkɛpstrʌm, ˈsɛp -, - strəm /; plural cepstra, adjective cepstral) is the result of computing the inverse Fourier transform (IFT) of the logarithm of the estimated signal spectrum. The method is a tool for investigating periodic structures in frequency spectra. The power cepstrum has applications in ...
Energy cascade. Flow visualization of a turbulent jet, made by laser-induced fluorescence. The jet exhibits a wide range of length scales, a prerequisite for the appearance of an energy cascade in the turbulence modelling. In continuum mechanics, an energy cascade involves the transfer of energy from large scales of motion to the small scales ...
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