Audio Spectrum Effect - Adobe AFTER EFFECTS 7.0 Manual

ADOBE AFTER EFFECTS 7.0 442
User Guide
Calculates collisions only on the main core. The forks are not affected. This control is
Main Core Collision Only
relevant only when you select Alpha Obstacle.
Specifies the type of fractal turbulence used to create the lightning.
Fractal Type
Specifies the percentage by which the core strength is drained when creating a new fork. Increasing this
Core Drain
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.
Specifies the opacity of the new fork. This amount is measured as a percentage of the Core Drain
Fork Strength
value.
Specifies the amount of variation in the opacity of the fork and determines how much the fork opacity
Fork Variation
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:
Specifies the audio layer you want to display as a spectrum.
Audio Layer
Specifies the position at which the spectrum starts or ends if Path is set to None.
Start Point, End Point
The audio spectrum is displayed along the path of the layer, unless None is chosen.
Path
Specifies the path to start from a single point and displays as a radial graph.
Use Polar Path
Specify the first and last frequency, in hertz, of the range of frequencies being
Start Frequency, End Frequency
displayed.
Specifies the number of frequencies displayed.
Frequency Bands
Specifies the maximum height, in pixels, of a displayed frequency.
Maximum Height
Specifies the duration of audio, in milliseconds, used to calculate the spectrum.
Audio Duration
Specifies the time offset in milliseconds used to retrieve the audio.
Audio Offset
Specifies the thickness of the bands.
Thickness
Specifies how feathered or blurry the bands appear.
Softness