voice recognition in iPhone

Is the voice recogniiton a part of iPhone Audio? I want to build a sample code on voice recognition for iPhone. How to get started? please give me some idea. any documents in iPhone app developers 开发者_开发技巧which says about voice recognition programming?

Thank you,

There are no native voice recognition libraries/API accessible from the iPhone SDK that I know of. However, you could try looking into some third-party API's such as CMU Sphinx or Sensory

See this related question for more information.