• Adobe After Effects Expressions

  Linking the Bulge effect to an Audio Amplitude layer to get a beat

  Posted by Helena Masterson on December 12, 2011 at 9:47 pm

  I have an expression that I have used to link an Audio Amplitude layer to the Taper Radius of the Bulge effect. I want the bulge effect to become bigger and smaller to the beat of the music.

  The expression I have works but the movement is so slight that you can barely see it. Is there a way to have a value range to intensify the effect of the bulge beating such as a max and min?

  This is what I have as my expression:

  thisComp.layer("Audio Amplitude").effect("Both Channels")("Slider")

  Helena Masterson replied 14 years, 7 months ago 2 Members · 2 Replies
• 2 Replies

• 

  Dan Ebberts

  December 12, 2011 at 10:31 pm

  Like this, probably:

  aud = thisComp.layer(“Audio Amplitude”).effect(“Both Channels”)(“Slider”);
  audMin = 0;
  audMax = 20;
  taperMin = 0;
  taperMax = 100;
  linear(aud,audMin,audMax,taperMax,taperMin)

  Dan
• 

  Helena Masterson

  December 12, 2011 at 11:00 pm

  Thats great thanks! You have no idea how many things I tried.. Works a treat 🙂

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