How Speech to Text conversion in iPhone

Is there any way, by which we can convert speech to Text using iPhone 开发者_运维百科SDK?

Yes, if you are Google, Dragon, or Siri. The iPhone SDK does not provide any access to the iPhone 3GS's built-in voice recognition, which is apparently none too elaborate anyway. Your best bet is to find a web service to which you can upload audio clips for analysis.

http://cmusphinx.sourceforge.net/2010/05/vocalkit-shim-for-speech-recognition-on-iphone/

This looks promising.

Krishnan ,This is Reply for your Comment Is that the same case for Text to speech?.

No there is Library called OpenEars by using this Library you may achieve the text to Speech functionality.

OpenEars

OpenEars is an open-source iOS library` for implementing round-trip English language speech recognition and text-to-speech on the iPhone and iPad.

You should take a look of this library.

As of iOS 10 (not released yet), Apple has their own speech recognition API.

https://developer.apple.com/reference/speech/sfspeechrecognizer