DETECT Speaking Language- iPhone

I can covert the speech that a user spokes to text using Open ears (see http://www.politepix.com/openears/yourapp ). But How i could detect the language which the user speaks is English, french, chinese etc... Is there any method to understand in which language the user speaks? How can i check this.? Any help would be appreciated. Thanks

Can I play any thing with this

- (NSError *) generateLanguageModelFromArray:(NSArray *)languageModelArray withFilesNamed:(NSString *)fileName;