I am new to iOS programming.Can you please tell me how to convert the speech to text in iOS?Is there any API called?Please suggest me how to proceed?
There are several libraries for this kind of conversion - I host two of those on GitHub: libsprec (this uses the Google speech recognition APIs, so it supports multiple languages) and VocalKit which uses the high-quality opensource PocketSphinx library (however, it currently supports English only).
OpenEars uses PocketSphinx as well.
There are some commercial solutions as well: the Dragon Dication SDK is a popular, however quite expensive framework.
OpenEars is one of the best library available.
You could find all the details from their website.
来源：https://stackoverflow.com/questions/14019806/sample-example-for-speech-to-text-in-ios