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Realtime graphical spectrum analyzer
dpf fft audio-plugin spectral-analysis
C++ Makefile C
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README.md

README.md

Spectacle

A graphical spectral analyzer

screenshot

Introduction

Spectacle is a real-time spectral analyzer using the short-time Fourier transform, available as LV2 audio plugin and JACK client.

  • display the spectrum on logarithmic musical scale
  • control the parameters of the analysis that affect latency and precision
  • have zoom functionality and smooth interpolation
  • identify the value under cursor and the peaks

Controls

  • resolution: number of frequency points evaluated by STFT, greater CPU load in high values
  • step: linked to the rate of STFT updates, faster when low but also more CPU consuming
  • attack time: reaction delay to rapid increases of amplitude
  • release time: reaction delay to rapid decreases of amplitude

Change log

1.0

  • initial release

Contributors

  • @trebmuh, LibraZiK: documentation
  • @rghvdberg: software name
  • @alcomposer, @unfa: suggestions for improvement
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