Projects / Spectro-Edit


Spectro-Edit reads in regular PCM audio files, then shows the audio visually in a time vs. frequency plot. The fun part is that you can "paint out" any part of the visualization and play back the audio subject to your modifications. When you are happy with the result, you can save your work back to a WAV file. This could be useful for podcasting (edit out microphone noise, chair squeaks, phones ringing, and other background noise), music (make strange and unusual modifications to the sound for artistic reasons), research (visualize animal calls or noise pollution from nearby industrial activity), and general purpose geekery (which was the original purpose).

Recent releases

  •  04 Nov 2008 18:19

    Release Notes: New features include: improved visualization with more user control, and optional use of colour to double the displayed value resolution; exponential sliders, which greatly improves their useful range; the cursor position readout now shows the nearest musical note name (to the semitone); repositioning of playback by clicking in the header; and the ability to load stereo samples (they are automatically mixed down to mono). Bugfixes include elimination of the audible blip at the end of the clip, and numerous small but noticeable improvements to the shuttle controls and the rest of the GUI.

    •  29 Aug 2008 16:50

      Release Notes: This release adds many improvements, including undo/redo and a continuous readout reporting cursor position (frequency (y axis) and time (x axis)). The brightness slider is now faster and the user interface more thoughtfully laid out. The "scale region" tool now uses a slider with realtime preview instead of two buttons, and the new tool chooser features several new tools, including "flip" (x or y) and "clip to threshold". The window is now never wider than the screen when opening a lengthy clip.

      •  10 Aug 2008 04:50

        Release Notes: Supports loading and saving of mono 16-bit PCM audio files (WAV and AIFF). The user interface is still very basic; nonetheless, the program is quite usable.


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