title: How do I create a sine wave signal in Cocoa?
body: <p>I am a noob programmer who just started learning about Cocoa.  </p>
  
  <p>I want to create a sine wave signal interface. How can I do that? </p>
  
  <p>I saw that someone used code from <a href="http://www.processing.org/learning/library/sinewavesignal.html" rel="nofollow">this processing example</a>  to create one.  How can I do something similar in my application?</p>