OK, from the OEPocketsphinxController+RapidEars header and docs:
/** Setting this to true will cause you to receive your hypotheses as separate words rather than a single NSString. This is a requirement for using OEEventsObserver delegate methods that contain timing or per-word scoring. This can't be used with N-best.*/ - (void) setReturnSegments:(BOOL)returnSegments;/** Setting this to true will cause you to receive segment hypotheses with timing attached. This is a requirement for using OEEventsObserver delegate methods that contain word timing information. It only works if you have setReturnSegments set to TRUE. This can't be used with N-best.*/ - (void) setReturnSegmentTimes:(BOOL)returnSegmentTimes;