title: Generate DTMF Tones
body: <p>I am wondering if anyone has come across a way to generate tones in the iPhone SDK. I am trying to generate DTMF tones, and can't seem to find anything substantial out there. I want to be able to specify how long to play the tone for as well (i.e. to simulate holding the button down as opposed to just pressing it briefly..</p>
  
  <p>I found an open source app called iPhreak. It supposedly generates DTMF tones to fool payphones (I Assure you this is not my intention - my company deals with telephone based Intercom systems). The only problem with that application is that there are files missing from the open source project. Perhaps someone else has gotten this project to work in the past?</p>
  
  <p>If anyone has any idea on where I would look for something like this, I would be very appreciative with my votes :) </p>