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2. List of free electronics circuit simulators - Wikipedia

   en.wikipedia.org/wiki/List_of_free_electronics...

   List of free analog and digital electronic circuit simulators, available for Windows, macOS, Linux, and comparing against UC Berkeley SPICE.The following table is split into two groups based on whether it has a graphical visual interface or not.

3. 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.

4. Sonic Visualiser - Wikipedia

   en.wikipedia.org/wiki/Sonic_Visualiser

   Sonic Visualiser supports third-party plugins in the Vamp plugin format. The plugins take audio input and parameters and return values for display. [3] There are plugins which compute spectral flux and spectral centroid. Other plugins include automatic melody extraction, beat finding, chord analysis, etc. [5]

5. 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.

6. Comparison of packet analyzers - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_packet_analyzers

   Microsoft Message Analyzer Microsoft: October 28, 2016 / 1.4 [9] GUI Proprietary: Free Microsoft Network Monitor: Microsoft: June 24, 2010 / 3.4 GUI Proprietary: Free netsniff-ng: Daniel Borkmann November 7, 2016 / 0.6.2 CLI: GNU General Public License: Free ngrep: Jordan Ritter September 7, 2017 / 1.47 CLI: BSD-style Free Observer

7. Real-time analyzer - Wikipedia

   en.wikipedia.org/wiki/Real-time_analyzer

   A real-time analyzer (RTA) is a professional audio device that measures and displays the frequency spectrum of an audio signal; a spectrum analyzer that works in real time. An RTA can range from a small PDA -sized device to a rack-mounted hardware unit to software running on a laptop .

8. Spectral analysis - Wikipedia

   en.wikipedia.org/wiki/Spectral_analysis

   Spectrum analyzer, a hardware device that measures the magnitude of an input signal versus frequency within the full frequency range of the instrument Spectral theory , in mathematics, a theory that extends eigenvalues and eigenvectors to linear operators on Hilbert space, and more generally to the elements of a Banach algebra

9. Constellation diagram - Wikipedia

   en.wikipedia.org/wiki/Constellation_diagram

   When plotted on a constellation diagram the point representing that received sample will be offset from the correct position for that symbol. An electronic test instrument called a vector signal analyzer can display the constellation diagram of a digital signal by sampling the signal and plotting each received symbol as a point. The result is a ...