Reads audio from Windows audio interface or wave file and creates a continuous spectrum display. Command line support for generating sine, square, triangle and sawtooth wave files. Uses biquad IIR digital filters for frequency detection, plus digital lowpass filters for output extraction. Highly configurable. 60+ FPS with suitable hardware. Manual or automatic gain control.

Features

  • Continuous display update
  • Single function, easy to learn
  • Zoom in on small frequency or dB range
  • Resizable main window and repartitionable panes
  • Crosshair cursor when Ctrl is pressed
  • Single, stand-alone exe file, no install/uninstall
  • Builds with Visual Studio 2019 or 2022
  • Bit-perfect sine wave generation for all sample sizes
  • AVX-512, AVX-2 and AVX vectorization of filter bank

Project Samples

Project Activity

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License

GNU General Public License version 3.0 (GPLv3)

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Additional Project Details

Operating Systems

Windows

Intended Audience

Education, Science/Research

User Interface

Win32 (MS Windows)

Programming Language

C

Related Categories

C Audio Analysis Software, C Test and Measurement Software

Registered

2022-07-24