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  2. Short-time Fourier transform - Wikipedia

    en.wikipedia.org/wiki/Short-time_Fourier_transform

    One then usually plots the changing spectra as a function of time, known as a spectrogram or waterfall plot, such as commonly used in software defined radio (SDR) based spectrum displays. Full bandwidth displays covering the whole range of an SDR commonly use fast Fourier transforms (FFTs) with 2^24 points on desktop computers. [citation needed]

  3. List of amateur radio software - Wikipedia

    en.wikipedia.org/wiki/List_of_amateur_radio_software

    1 Software tools. 2 Logging software. 3 Operating systems. ... software-defined radio and signal processing SDRangel: GPL: Windows, macOS, Linux: software-defined ...

  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. List of software-defined radios - Wikipedia

    en.wikipedia.org/wiki/List_of_software-defined...

    2/1 Using HDSDR software Relies on a computing asset with sound device to process I and Q input and output Yes, HDSDR, PowerSDR Yes, Quisk, Linrad, GNU Radio Yes, various software Hunter SDR [55] Kit 2.5 – 30 MHz (1 – 30 MHz typ.) ext External ADC required (I/Q output) ? USB Yes No No Icom IC-7610 [56] Pre-built RX: 0.030 - 60 MHz.

  6. Software Communications Architecture - Wikipedia

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

    The Software Communications Architecture (SCA) is an open architecture framework that defines a standard way for radios to instantiate, configure, and manage waveform applications running on their platform. The SCA separates waveform software from the underlying hardware platform, facilitating waveform software portability and re-use to avoid ...

  7. 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.

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  9. OpenHPSDR - Wikipedia

    en.wikipedia.org/wiki/OpenHPSDR

    The OpenHPSDR (High Performance Software Defined Radio) project dates from 2005 when Phil Covington, Phil Harman, and Bill Tracey combined their separate projects to form the HPSDR group. [1] It is built around a modular concept which encourages experimentation with new techniques and devices (e.g. SDR , Envelope Elimination and Restoration ...