asFFT Xtra 

mar08 : NEW ! asFFT Xtra ported to MacIntel and Director11 !

Sample shot of demo in standard mode

asFFT Xtra

An Xtra for Macromedia Director that does a FFT (Fast Fourier Transform) on live sound input.

Platforms :
• Macintosh MacOS9-MacOSX (PPC and MacIntel!)
• Windows 95/98/2000/XP w/ DirectX5
• shockwave-safe and autodownloadable
• Director 7 to 8.5 + MX + MX2004 + Director11 !


  • computes FFT (Fast Fourier Transform), i.e. frequency values, on live sound input
  • direct access to live sound samples
  • sound input selection by code: in lingo, you can select the sound device and the sound source.
  • global instantaneous volume : access the current volume of the sound input
  • equalizer switch : gathers the frequencies according to human hearing
  • normalized switch : the frequency values are proportional to the sound volume, giving more intuitive values.
  • autodownloadable packages

F.A.Q. is here


live online demo
(shockwave needed)

download asFFT

Macintosh OSX & Windows 95/98/2000/XP/Vista/W7
Download (390 Kb) :

Macintosh PPC OS8 to 9
Download (164 Kb) : asFFT2.0.8Mac.sit

Demo version has an alert panel in Authoring mode and does not work in Projector or in Shockwave :


buy asFFT

Click here to buy securely and easily from ShareIt!

single user licence : 29 €
+TVA/VAT if applicable

site licence : 199 €
+TVA/VAT if applicable

The password that you will receive by email will unlock the demo version and will work with all 2.x versions on all platforms.

=> Already more than 350 registered users !


  • simple live lip sync
  • VJ visual animations synchronized to live sound (DJ)
  • live equalizer display
  • psychedelic animations on music
  • sound-driven artistic installations
  • simple voice recognition

examples of use

Quase-Cinema : VJ software
MP3er by lingodude : an MP3 file player with frequency display
VisualVoicePro : an immersive, reactive digital playspace
singpong and sssSnake : two voice-driven games
area3 : movet : sound-driven live visual scenes
area3 : a3console : DJ/VJ software tool
pixrecorder : DJ/VJ software tool
renox : Sound driven scenes
toxi : the well : Sound driven scene
Venus #1 : Dancing creature
Dancing Cthulhu : Dancing creature + karaoke
Responder 2001
: Sonic dolphin-computer interaction

related sites

the [macronaut] hub_ : A framework around the asFFT

Please post me a note if you use the asFFT Xtra and want to appear here... Thank you



Sample shot of demo in equalizer mode