High-Low Pass (PB only)This effect sets a limit above or below which frequencies can pass. High Pass allows frequencies above the limit and blocks frequencies below. Conversely, Low Pass allows frequencies below the limit and blocks frequencies above. Use High-Low Pass to enhance or attenuate (reduce) a sound, change the focus from one sound to another over time, protect equipment from potentially damaging frequencies, or direct certain frequencies to specific equipment. For more information, see the After Effects product section on Adobe's Web site. |