where to start with audio synthesis on iPhone

Question

I\'d like to build a synthesizer for the iPhone. I understand that it\'s possible to use custom audio units for the iPhone. At first glance, this sounds promising, since the

Answer 1

Lately I've been using AudioKit

It's a fresh and well designed wrapper over CSound which has been around for ages

I was using tonic with openframeworks and I was finding myself missing programming in swift.

Although tonic and openframeworks are both powerful tools,

I've chosen to get in bed with swift