A simple sine wave makes for a poor carrier because it lacks the frequencies needed to "fill" the vocoder bands. Use saws, squares, or noise-heavy leads.
Vocodex is known for its deep customization, allowing for more than just standard "robot" voices: vocodex effects
Most users drop Vocodex on a vocal track. This is wrong. To get professional , you must use Sidechaining . A simple sine wave makes for a poor