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  2. Waterfall plot - Wikipedia

    en.wikipedia.org/wiki/Waterfall_plot

    Waterfall plots are often used to show how two-dimensional phenomena change over time. [1] A three-dimensional spectral waterfall plot is a plot in which multiple curves of data, typically spectra, are displayed simultaneously. Typically the curves are staggered both across the screen and vertically, with "nearer" curves masking the ones behind.

  3. Short-time Fourier transform - Wikipedia

    en.wikipedia.org/wiki/Short-time_Fourier_transform

    Simply, in the continuous-time case, the function to be transformed is multiplied by a window function which is nonzero for only a short period of time. The Fourier transform (a one-dimensional function) of the resulting signal is taken, then the window is slid along the time axis until the end resulting in a two-dimensional representation of the signal.

  4. Olivia MFSK - Wikipedia

    en.wikipedia.org/wiki/Olivia_MFSK

    Spectrogram (waterfall display) of an Olivia 16/500 signal centered on 7073.25 kHz Olivia MFSK is an amateur radioteletype protocol, using multiple frequency-shift keying (MFSK) and designed to work in difficult (low signal-to-noise ratio plus multipath propagation) conditions on shortwave bands.

  5. Campbell diagram - Wikipedia

    en.wikipedia.org/wiki/Campbell_diagram

    Experimentally measured vibration response spectrum as a function of the shaft's rotation speed (waterfall plot), the peak locations for each slice usually corresponding to the eigenfrequencies. In acoustical engineering

  6. Perceptual quantizer - Wikipedia

    en.wikipedia.org/wiki/Perceptual_Quantizer

    PQ is the basis of HDR video formats (such as Dolby Vision, [2] [9] HDR10 [10] and HDR10+ [11]) and is also used for HDR still picture formats. [12] [13] PQ is not backward compatible with the BT.1886 EOTF (i.e. the gamma curve of SDR), while HLG is compatible. Chart showing the PQ electro-optical transfer function.

  7. Gang-tied illegal immigrant ‘giggled’ as he confessed to ...

    www.aol.com/gang-tied-illegal-immigrant-giggled...

    Eduardo Javier Ordonez Godoy, 35, was busted after a 22-year-old woman was abducted by a masked man at 4:45 a.m. Christmas Eve and driven around for nearly an hour before being left tied to a tree ...

  8. Software Communications Architecture - Wikipedia

    en.wikipedia.org/wiki/Software_Communications...

    The SCA is published by the Joint Tactical Networking Center (JTNC). This architecture was developed to assist in the development of Software Defined Radio (SDR) communication systems, capturing the benefits of recent technology advances which are expected to greatly enhance interoperability of communication systems and reduce development and deployment costs.

  9. Mortgage and refinance rates for Dec. 18, 2024: Average ... - AOL

    www.aol.com/finance/mortgage-and-refinance-rates...

    Average mortgage rates edge higher for 30-year and 15-year terms as of Wednesday, December 18, 2024, as the Federal Reserve is set to conclude its final policy session of the year.