I am looking for some free speech recognition engines to use in my iphone application... can you suggest any?
There are a couple of wrappers of the Sphinx speech recognition engine (http://cmusphinx.sourceforge.net/) available for iOS
https://github.com/KingOfBrian/VocalKit
Through reading his summary you can see he is actually pointing people towards http://www.politepix.com/openears
Nuance just opened the doors for developers to the Dragon Mobile SDK (they are industry-leaders). have a look at NDEV Mobile
来源：https://stackoverflow.com/questions/7596816/free-speech-recognition-engines-for-ios