iSpectrum is an easy to use audio spectrum analyzer that allows the user to view live audio in a standard frequency plot, a stereo oscilloscope view and a waterfall display. The user can adjust the display resolution, center frequency and save images to disk.


  • Audio spectrum analyzer.
  • Spectrum Display.
  • Waterfall Frequency Display.
  • Oscilloscope View.
  • 6 User selectable bandwidth resolutions.
  • User selectable center frequency.
  • User selectable input gain.
  • Works with built-in, system and USB microphones.
  • Displayed images can be saved to disk.
  • Point-and-click frequency marker.
  • Auto centering of marker frequency when switching bandwidth.
  • Choice of FFT window functions.
  • User selectable sample averaging.


Mac OS X 10.3 and higher.
Audio input device.

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One thought on “iSpectrum

  1. iSpectrum Analyzer 2.06 released
    * Intel Only Mac OS 10.6 – 10.8
    * Waterfall, Copy to Clipboard fixed for Mountain Lion (10.8).
    * Oscilloscope ms/Div, Audio Channel saved in prefs.
    * Added Online Manual.
    * Stability improvements.
    * Retina Icons.
    * Signed for Gatekeeper.

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