I want to know who designed sounds like the unlocking, message sending or camera sounds in the iPhone, any built-in sounds.

Hello,

I'm researching product related sounds and am interested in sounds of the iphone. This relates any sounds meant to provide orientation: unlocking of the phone, sending a text message, using the camera/ taking a picture etc etc. So any sounds that were designed by Apple to be part of the product experience, NOT sounds by individually downloaded apps. Does anyone know where I can find out more about WHO was involved in this, any ongoing discussions, articles, interviews, publications, user experience surveys etc.?

Thanks for your help.

R