text: //
  //  MainViewController.h
  //  Pure Guitar Tuner
  //
  //  Created by Taylor Franklin on 12/30/13.
  //  Copyright (c) 2013 Taylor Franklin. All rights reserved.
  //
  
  #import "FlipsideViewController.h"
  #import "GTNote.h"
  #import "PitchDetector.h"
  #import "RWKnobControl.h"
  
  @interface MainViewController : UIViewController <FlipsideViewControllerDelegate, UIPopoverControllerDelegate>
  
  @property (strong, nonatomic) UIScrollView *scrollView;
  @property (strong, nonatomic) UIPopoverController *flipsidePopoverController;
  @property (strong, nonatomic) RWKnobControl *knobControl;
  @property (strong, nonatomic) UIView *knobPlaceholder;
  @property (strong, nonatomic) GTNote *noteData;
  
  
  @property (nonatomic, strong) UILabel *noteDisplay;
  @property (nonatomic, retain) UILabel *freqencyDisplay;
  @property (nonatomic, assign) double currentFrequency;
  @property (nonatomic, strong) NSString *currentNote;
  @property(assign) BOOL isListening;
  
  @property (nonatomic, strong) PitchDetector *pitchDetector;
  
  - (void)updateFrequencyLabel;
  
  - (void)updateToFrequncy:(double)freqency;
  
  @end
  