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  2. Radio-frequency sweep - Wikipedia

    en.wikipedia.org/wiki/Radio-frequency_sweep

    A spectrum analyzer is a standard instrument used for RF sweep. It includes an electronically tunable receiver and a display. The display presents measured power (y axis) vs frequency (x axis). The power spectrum display is a two-dimensional display of measured power vs. frequency. The power may be either in linear units, or logarithmic units ...

  3. Multifractal system - Wikipedia

    en.wikipedia.org/wiki/Multifractal_system

    Download as PDF; Printable version; In other projects ... a continuous spectrum of ... is calculated from the box-counting pixel distribution as in Eq.2.0. [, ...

  4. Smiley face curve - Wikipedia

    en.wikipedia.org/wiki/Smiley_face_curve

    An idealized and extreme smiley face curve shown using a 29-band graphic equalizer. A smiley face curve or mid scoop [1] in audio signal processing is a target frequency response curve characterized by boosted low and high frequencies coupled with reduced midrange frequency power.

  5. Spectrum analyzer - Wikipedia

    en.wikipedia.org/wiki/Spectrum_analyzer

    A spectrum analyzer is also used to determine, by direct observation, the bandwidth of a digital or analog signal. A spectrum analyzer interface is a device that connects to a wireless receiver or a personal computer to allow visual detection and analysis of electromagnetic signals over a defined band of frequencies.

  6. Signal analyzer - Wikipedia

    en.wikipedia.org/wiki/Signal_analyzer

    Signal analyzers can perform the operations of both spectrum analyzers and vector signal analyzers.A signal analyzer can be viewed as a measurement platform, with operations such as spectrum analysis (including phase noise, power, and distortion) and vector signal analysis (including demodulation or modulation quality analysis) performed as measurement applications.

  7. Electronic test equipment - Wikipedia

    en.wikipedia.org/wiki/Electronic_test_equipment

    Logic analyzer (Tests digital circuits) Spectrum analyzer (SA) (Measures spectral energy of signals) Protocol analyzer (Tests functionality, performance and conformance of protocols) Vector signal analyzer (VSA) (Like the SA but it can also perform many more useful digital demodulation functions) Time-domain reflectometer (Tests integrity of ...

  8. Periodogram - Wikipedia

    en.wikipedia.org/wiki/Periodogram

    A power spectrum (magnitude-squared) of two sinusoidal basis functions, calculated by the periodogram method. Two power spectra (magnitude-squared) (rectangular and Hamming window functions plus background noise), calculated by the periodogram method.

  9. Equalization (audio) - Wikipedia

    en.wikipedia.org/wiki/Equalization_(audio)

    Equalization, or simply EQ, in sound recording and reproduction is the process of adjusting the volume of different frequency bands within an audio signal. The circuit or equipment used to achieve this is called an equalizer. [1] [2] Most hi-fi equipment uses relatively simple filters to make bass and treble adjustments. Graphic and parametric ...