myriacat - spectrum analyzer with VLF SDR

myriacat is a spectrum analyzer with VLF SDR. It’s designed to be fast, intuitive to use, portable, and lightweight.

It supports up to 4K full screen, fluid realtime display.

This is not open source software.

Features include:

Low level ALSA and OpenGL access.
Multithreaded in-house DSP kernel, without external libraries.
Complex Fourier Transformation, DIT, inplace, radix2, based on Cooley Tukey.
FFT window size from 1024 to 262144 samples.
Samplerate from 275sps to 192kSps, 24bit.
Powerspectrum resolution up to 1 millihertz.
Demodulator bandwidth from sub 1Hz to full bandwidth.
Window size from 256*160 pixels to 4K fullscreen.
Waterfall logging up to >100 years with scroll time display.
Measuring ruler & harmonic series markers.
Overlap-add FFT convolution filter for sideband demodulator.
Vertical flank steepness (brickwall) filter without phaseshift.
A-weighting filter according to international standard IEC 61672:2003.
Hidden bin processing in log-view, no missing data.
Smart buttons replace options and setting-screens, no invalid parameters possible.
Single volume control for the whole signaltrain.
Every configuration is seamlessly changeable on-the-fly.
Savestate memorizes all settings for next use.

Website: github.com/myriacat/myriacat
Support:
Developer: the myriacat creator
License: Freeware

myriacat is written in C. Learn C with our recommended free books and free tutorials.

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