@class NSString, AXHALiveListenController, AXDispatchTimer, NSMutableArray, NSLock; @interface AXHALiveListenObserver : NSObject <HUListenerHelperDelegate, AXHALiveListenDelegate> @property (retain, nonatomic) AXHALiveListenController *controller; @property (retain, nonatomic) AXDispatchTimer *liveListenLevelsTimer; @property (retain, nonatomic) NSMutableArray *updateBlocks; @property (retain, nonatomic) NSLock *updateLock; @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; - (void)removeListener:(id)a0; - (id)initWithController:(id)a0; - (void)registerUpdateBlock:(id /* block */)a0 withListener:(id)a1; - (void).cxx_destruct; - (void)_notifyListenersAndPollAudioLevelIfLiveListenIsRunning; - (void)_notifyListenersWithIsListening:(BOOL)a0 audioLevel:(float)a1; - (void)_pollLiveListenAudioLevelAfterDelay; - (void)liveListenControllerStateDidChange; @end