In the method where you want to recognize speech (to test this out, add it to your viewDidLoad method), add the following method call:
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[[OEPocketsphinxController sharedInstance] setActive:TRUE error:nil];
[[OEPocketsphinxController sharedInstance] startListeningWithLanguageModelAtPath:lmPath dictionaryAtPath:dicPath acousticModelAtPath:[OEAcousticModel pathToModel:@"AcousticModelEnglish"] languageModelIsJSGF:NO]; // Change "AcousticModelEnglish" to "AcousticModelSpanish" to perform Spanish recognition instead of English.

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