Somewhat OT, but if you are interested in voices for Star Wars ..
We are the developers of a pro audio recorder app on Android - it will also echo the recording to earphones (or an aux cable) if you plug that in before you click Record button.
The app is free, without ads - and the basic effects are free. But MP3 and the Voice Changer voices are a paid feature. It will record - but you can choose OGG or MP3 compression and record for hours (and then delete it later). We have tested to 100 hours continuous recording.
The voice changer includes 12 voices - click Effects - Voice Changer - select from:
Dark Father - not affiliated with Darth Vader or Star Wars
Rylo Ken - not affiliated with Kylo Ren or Star Wars
Dane - not affiliated with Bane or The Dark Knight Rises movie
Exterminator - not affiliated with Dalek or the BBC
Space Trooper - not affiliated with Stormtroopers or Star Wars (this one will be improved in the next update)
Captain Phase - not affiliated with Captain Phasma or Star Wars
Badman - not affiliated with Batman or DC universe
Optimal Prime - not affiliated with Optimus Prime or Transformer movies
Uldron - not affiliated with Ultron or Marvel universe
P3CO - not affiliated with C3PO or Star Wars universe
Collum - not affiliated with Gollum/Smeagol or Lord of the Rings series
Smug - not affiliated with Smaug or The Hobbit
We don't use any copyrighted images, or audio. Speak samples are original dialog and were generated using the app.
Just plug in a male-to-male cable to the phone jack (and then press Record button), and the other end goes into the gaming hardware mic jack - just remember to keep volume very low initially (so you don't blow anything out with loud volume).
Now after jack is plugged into phone, pressing Record in the app will echo the recorded audio to the output as well.