Flange & Chorus (Pro only)

The Flange & Chorus effect lets you adjust both the Flange and Chorus. Chorus is commonly used to add depth and character to audio footage that contains a single instrument or voice. Chorus makes one voice sound like many voices.

Flange applies a copy of the sound that is detuned, or played at a frequency slightly offset from the original. By experimenting with the voice separation time and the modulation depth, you can create a wavy, rushing sound. The default settings apply to Flange alone.

Adjust the following controls for the Flange & Chorus effect:

Voice Separation Time (ms)

Specifies the time in milliseconds that separates each voice. Each voice is a delayed version of the original sound. Low values are commonly used for flange, and higher values for chorus.

Voices

Specifies the number of voices in the processed (wet) audio. Increasing this value applies more of a chorus effect.

Modulation Rate

Specifies the rate in Hz at which the frequency modulates.

Modulation Depth

Specifies the amount of frequency modulation.

Voice Phase Change

Specifies the modulation phase difference in degrees between each subsequent voice. Invert Phase inverts the phase of the processed (wet) audio, which emphasizes more of the high frequencies; not inverting the phase emphasizes more of the low frequencies. Stereo Voices alternates each voice between two channels so that the first voice appears in the left channel, the second in the right channel, the third in the left, and so on. To hear stereo voices, you must preview the audio in stereo or render the movie in stereo.

Dry Out, Wet Out

Specify the mix of unprocessed (dry) audio to processed (wet) audio in the final output. Values of 50% are commonly used.

To apply Chorus without Flange:

1. For Voice Separation Time (ms), specify a value of about 40. For a deeper chorus effect, increase this value.
2. For Voices, specify 4.
3. For Modulation Rate, specify a value of about 0.1.
4. For Modulation Depth, specify 50%.
5. For Voice Phase Change, specify 90, and then select Stereo Voices. To quickly find an optimal phase change based on the number of voices you have specified, use the formula P=360/x, where P is the phase change and x is the number of voices.
6. For Dry Out and Wet Out, specify 50% each. To make voices appear from more than one direction and get louder over time, select Stereo Voices, drag the Dry Out slider to 0.0 so you hear just the effect, and then set keyframes so that the voices fade in over time.