Adobe 22011292 User Guide - Page 156

142 CHAPTER 8 Effects Menu - Edit View Sweeping Phaser dialog A phase is similar to a flange, except that instead of using a simple delay, frequencies are phase-shifted over time. When used on stereo files, the stereo image can be dramatically altered to create some truly interesting sounds. Filter Characteristics Sweep Gain This slider lets your apply variable amounts of Sweep Gain, which is the gain applied to the phased signal. Take care to avoid clipping when applying higher positive values Center Frequency This is the frequency around which the phase will sweep. Frequencies closer to the middle of the dynamic range of the selected audio will produce more dramatic results. Depth This setting determines the degree of phasing. The value is given as a Q value, which is a ratio of width to center frequency. Greater Depth settings cause the sweep to extend farther away from the center frequency in both directions (covering a greater frequency range), producing a wider tremolo effect. Resonance This is the amount of phase-shift that is applied to the signal. You can think of it as a "strength" setting for the phase. The value is given as a Q value, which is a ratio of width to center frequency. Sweeping Rate The Sweeping Rate is the speed at which the filter sweeps around the center frequency, covering the dynamic range specified by the Depth setting. Values are given in Hertz (Hz), or cycles per second, Period (milliseconds), and Tempo (beats per minute). You can adjust the rate with the slider, or enter a value directly into one of the text boxes. To have the sweep occur in time with a song, for instance, enter the BPM of the music, or a fraction of it. (Entering 240 for a song with a tempo of 120 would sweep in eighth notes, for example.)