Make Sound Effects

I want to make effects like robot voice, helium, monster, telephone and giant.
please guide me in detail how can i do this.

Well, that’s easy…just record the sounds of robot voice, helium, monster, telephone, and giant…and VOILA! Done!

no, first i want to record some sound and then add effects on that sound means i want to make voice changing app.

We don’t have those sort of DSP effects built-in. If you’re familiar with signal processing theory and filter design you can create custom effects using our plugin SDK.