ADOBE AFTER EFFECTS 7.0
User Guide
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Main Core Collision Only
Calculates collisions only on the main core. The forks are not affected. This control is
relevant only when you select Alpha Obstacle.
Fractal Type
Specifies the type of fractal turbulence used to create the lightning.
Core Drain
Specifies the percentage by which the core strength is drained when creating a new fork. Increasing this
value reduces the opacity of the core where new forks appear. Because forks draw their strength from the main core,
decreasing this value reduces the opacity of the forks as well.
Fork Strength
Specifies the opacity of the new fork. This amount is measured as a percentage of the Core Drain
value.
Fork Variation
Specifies the amount of variation in the opacity of the fork and determines how much the fork opacity
will deviate from the amount set for Fork Strength.
Audio Spectrum effect
Apply the Audio Spectrum effect to a video layer to display the audio spectrum of an audio layer. The effect displays
the magnitude of frequencies in the range you define using Start Frequency and End Frequency. This effect can
display the audio spectrum in a number of different ways, including along a Bezier path of a layer. Apply the effect
to a layer that contains a solid or an image, and that may contain audio.
Note:
Audio Spectrum uses the audio source footage without time-remapping, effects, stretch, or levels. To display the
spectrum with such effects, precompose the audio layer before applying the Audio Spectrum effect.
This effect works with 8-bpc color.
Original (left), and with effect applied (center and right)
Adjust the following controls for the Audio Spectrum effect:
Audio Layer
Specifies the audio layer you want to display as a spectrum.
Start Point, End Point
Specifies the position at which the spectrum starts or ends if Path is set to None.
Path
The audio spectrum is displayed along the path of the layer, unless None is chosen.
Use Polar Path
Specifies the path to start from a single point and displays as a radial graph.
Start Frequency, End Frequency
Specify the first and last frequency, in hertz, of the range of frequencies being
displayed.
Frequency Bands
Specifies the number of frequencies displayed.
Maximum Height
Specifies the maximum height, in pixels, of a displayed frequency.
Audio Duration
Specifies the duration of audio, in milliseconds, used to calculate the spectrum.
Audio Offset
Specifies the time offset in milliseconds used to retrieve the audio.
Thickness
Specifies the thickness of the bands.
Softness
Specifies how feathered or blurry the bands appear.
Summary of Contents for AFTER EFFECTS 7.0
Page 1: ...Chapter 1 User Guide...
