23 Excellent Free Audio Unit Effect Plugins

23-free-audio-unitsSoundMagic Spectral is a free suite of 23 Audio Unit plug-ins that implement real-time spectral processing of sound.

Included in SoundMagic Spectral are the following effects:

  • Spectral Averaging
  • Spectral Bin Shift
  • Spectral Blurring
  • Spectral DroneMaker
  • Spectral Emergence
  • Spectral Filterbank
  • Spectral Freezing
  • Spectral Gate and Hold
  • Spectral Gliding Filters
  • Spectral Granulation
  • Spectral Harmonizer
  • Spectral Partial Glide
  • Spectral Pitch Shift
  • Spectral Pulsing
  • Spectral Shimmer
  • Spectral Shuffle
  • Spectral Stretch
  • Spectral Tracing
  • Chorus
  • Comb Filter Bank
  • Grain Streamer
  • Idee Fixer
  • Mr Filterbank

It’s an impressive collection of free sound-shaping plugins. Check out the demos at michaelnorris.info to hear what they can do.

If you give these a try, leave a comment with your thoughts on them!


Mac OS X 10.4 and a G4, G5 processor or Intel Mac.

An Audio Unit host (one of):

  • Ableton Live (4.0 or higher)
  • Amadeus
  • Apple GarageBand
  • Apple Logic Pro (or Emagic Logic 5.5.1 or higher)
  • Apple Logic Express
  • Apple Soundtrack (version 1.10 or later)
  • Apple Soundtrack Pro
  • Arizona AudioXplorer
  • Audiofile Engineering Wave Editor
  • BIAS Peak, Peak LE, and Peak DV 4.0 or higher, and Peak Pro
  • Celemony Melodyne 2.0 or higher
  • DSP-quattro 1.2 or higher
  • Freeverse Sound Studio 3.0 or higher
  • Illposed Ouroboros (free beta)
  • Intuem (2.0.1 or higher)
  • Max/MSP (using au~ external available from my website)
  • Metro (6.0 or higher)
  • MOTU Digital Performer (version 4.1 or higher; best with 4.52 or higher)
  • Numerology (version 1.2 or higher?)
  • Plogue Bidule
  • Rax (free beta)
  • Rogue Amoeba Audio Hijack Pro
  • Freeverse SoundStudio3
  • SynthTest
  • TC|Works Spark XL and Spark LE (2.8 or higher)
  • WaveBurner

via AudioGeekZine

9 thoughts on “23 Excellent Free Audio Unit Effect Plugins

  1. Instant ambient! I just wish the plugins were all wrapped in a single "shell" like SFX Machine, and that they had a beautiful UI. Maybe that should be the paid version.

Leave a Reply