Change pitch completely.
Raise your pitch so you sound like a chipmunk or lower it for a Darth Vader effect. Find the Pitch Shifter effect, and choose from presets like Angry Gerbil or The Dark Lord. You can also customize your settings by moving the Semi-tone sliders.
Turn down plosives and sibilance.
If your ess sounds hiss and p and b sounds pop, you can use the Vocal Enhancer effect. There are presets for male and female voices, each dampening a set of frequencies where those esses might become distracting. You can adjust the center frequency and bandwidth so that you can accurately target the offending sounds. There’s also a specific DeEsser effect in the Amplitude and Compression tab.
Add an echo.
An echo is caused by a sound wave bouncing off a distant surface. If you want to make someone sound like they’re standing at the bottom of a well, or shouting across a canyon, play with the Delay and Echo tools. Keep it subtle with the Rockabilly delay preset, or achieve instant creepiness with the Spooky echo preset.
Reverberation describes sound waves bouncing off of different surfaces. There are five different types of reverb effects in Audition, and several presets within each of those. Under the Convolution Reverb tab, create the impression that your voice is coming from a judge’s chamber, smoky bar, or under a bridge. Inside the Full Reverb effect, you can make your voice sound small enough to fit inside a chamber pot or large enough to fill a concert hall.
Use the Automatic Pitch Correction effect to hit the notes you want to hit. Find it in the Time and Pitch tab, choose your scale and key, and then adjust Attack and Sensitivity. Attack describes how quickly Audition adjusts a note. Shorter Attack settings are good for short notes but may sound robotic on longer ones. Sensitivity determines how much variation from perfect pitch you’ll allow.
Give the impression of movement.
Use the Doppler Shifter effect to make someone sound like they’re approaching and then receding from the listener or viewer. Use presets like Ambulance, Merry-go Round, even Super-Fast Passing Train. Customize the effect by choosing how far away the sound should start, the velocity of the speaker, and the angle of approach.
There are many more, so give yourself time to explore all of the presets in the Effects tab.