 Controlling sound volume without dB | |||||||
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A few simple expressions to convert from dB to volume-Percentages, this way sound will respond more like opacity...
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After Effects CS3 Useful things Presets (ffx) Views: 9655 Permalink | |||||
It's a pain to use decibels to animate sound-Volume, especially for a fade-out or cross-fade.
These are animation presets that you should apply to a sound-layer. A few sliders and an expression will be added. With the Volume Slider you can easily set and animate the sound-Volume in percentages (eg. 200% = twice as loud, or fadeout from 100-0) The Volume + Pan version also adds a slider that Balances/Pans the sound from left (-50) to right (+50) I noticed that After Effects' Stereo Mixer plugin uses a "Panning Law" of -6 dB, most DAWs use -3 or -4.5. there's a line in my script that lets you toggle between 0, -3, -4.5 or -6dB pan law. (for those of us who don't know what a pan law is: basically it's a formula that controls that sounds in the center don't sound louder than sounds that are panned hard left or right, this also prevents a 0dB stereo signal from clipping when it's summed to mono) by Filip Vandueren Keywordsvolume, sound, control, decibel, percent, Panning Law(Min. Version: After Effects CS3, Category: Useful things, Type: Presets (ffx)) 
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posted by MaxX on May 10, 2010
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Ducking Audio Preset/Expression | |||
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A great time-saving preset to "duck"(fade in/out) a music layer based on a voice over.
"Ducking - Audio Terms Explained - Process of automatic compression, eg when the announcer's voice signal causes the level of music to be attenuated."(from lp2cd.com) |
After Effects CS3 Useful things Presets (ffx) Views: 7493 Permalink | |
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posted by MicGyver on Oct 25, 2009
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CountdownTimer Preset | |||
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The CountdownTimer preset uses expressions to make it easier for you to create countdowns.
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After Effects CS4 Useful things Presets (ffx) Views: 26210 Permalink | |
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posted by Trent Armstrong on Oct 15, 2010
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Camera FocusControl | |||
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Interactively control camera focus distance.
The camera will focus wherever your null or solid happens to sit. This expression is golden when you're doing a lot of Depth of Field work. |
After Effects 6 Camera Expressions Views: 10148 Permalink | |
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posted by peter17 on Nov 08, 2008
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