Star Wars' Darth Vader Voice Synth VaderVoice is a utility to transform your voice in Darth Vader's. Record your voice, press play and listen. Also VaderVoice includes a little synth: VaderSynth to fine tune the Lord Sith's effect to you. You have to find the best equalization for your voice. Impress your geekest friends with VaderVoice. Be Star Wars' biggest freaky.