- On the main panel, click on the On/off (1) button turn on the VoizGame panel.
- Move the cursor (2) on the Pitch-Timbre graph (also called the Morpher graph) to change the voice.
- For me, Pitch is 66% and Timbre is 95 % make me sound like Optimus most. So, I leave the cursor there.
Note: because  each voice is characterized on pitch and timbre, it is recommended that  you should try more or less to archive your most favorite pitch and  timbre parameters to sound like Optimus robot most.

In the next step, you will learn on how to take advantage of one of  most powerful voice effects in VoizGame - The Equalizer .
 - Expand the 
Advanced effects panel .
- Click on the 
On/Off (1) button to turn the 
Equalizer on 
- Make change to each slider 
(2) at a time while speaking into the mircrophone to pre-listening to how you sound like.
- For me, I'd recommend the below parameter.

- For instant use, you can download the Optimus Prime Robot voice preset from here.
- To learn how to use the preset of voice changer software, click here.