A PS3 headset that has a 3.5mm jack insertion for the mic. (Ex: Trittons)
A 3.5mm audio extension cable
I Am T-Pain app. (Ex: iPhone, Androids)
1. Remove your mic from the 3.5mm jack in your headset.
2. Connect the 3.5mm audio extension cable from your headset to your device that will run the T-Pain app.
3. Go on the T-Pain app and keep it on the microphone tab.
4. Now you can talk through your device and your voice will come out autotuned on PSN.
Tip: If your headset is big enough, it's easy to put your iPhone on your ear and have the ear piece from your headset hold it in place so you can talk pain free.