Convert the voice to text in iPhone

I want to ask a question about the iPhone application. Does Apple provide any API to the developers to record the phone call and convert it to text message? Thank 开发者_如何学Goyou.

In short, there are no APIs for recording phone calls or converting text to speech. You will need to create a speech recognition engine. I suspect the iPhone hardware will not be powerful enough to handle that type of processing though.

FYI...

APIs for converting Voice/Audio data in to text

API for Voice recognition in among group

iPhone speech recognition API?