아이 폰 의 AVAudio Recorder

  
  
  
  

   
   
   
   
//  document      
   
   
   
   
view plain 
   
   
   
   
 
   
   
   
   
    - (NSString*) documentsPath {   
   
   
   
   
     if (! _documentsPath) {   
   
   
   
   
      NSArray *searchPaths =   
   
   
   
   
       NSSearchPathForDirectoriesInDomains   
   
   
   
   
       (NSDocumentDirectory, NSUserDomainMask, YES);   
   
   
   
   
      _documentsPath = [searchPaths objectAtIndex: 0];   
   
   
   
   
      [_documentsPath retain];   
   
   
   
   
     }   
   
   
   
   
     return _documentsPath;   
   
   
   
   
    }   
   
   
   
   
        
   
   
   
   
    //(document     )   
   
   
   
   
     NSString *destinationString = [[self documentsPath]   
   
   
   
   
       stringByAppendingPathComponent:filenameField.text];   
   
   
   
   
     NSURL *destinationURL = [NSURL fileURLWithPath: destinationString];   
   
   
   
   
    //   AVAudioRecorder   
   
   
   
   
     NSError *recorderSetupError = nil;   
   
   
   
   
     AVAudioRecorder audioRecorder = [[AVAudioRecorder alloc] initWithURL:destinationURL   
   
   
   
   
       settings:recordSettings error:&recorderSetupError];   
   
   
   
   
     [recordSettings release];   
  
  
  
  

   
   
   
   

    
    
    
    
    NSMutableDictionary *recordSettings =   
    
    
    
    
      [[NSMutableDictionary alloc] initWithCapacity:10];   
    
    
    
    
      //1 ID    
    
    
    
    
      [recordSettings setObject:   
    
    
    
    
       [NSNumber numberWithInt: kAudioFormatLinearPCM] forKey: AVFormatIDKey];   
    
    
    
    
      float sampleRate =   
    
    
    
    
       [pcmSettingsViewController.sampleRateField.text floatValue];   
    
    
    
    
      //2       
    
    
    
    
      [recordSettings setObject:   
    
    
    
    
       [NSNumber numberWithFloat:sampleRate] forKey: AVSampleRateKey];   
    
    
    
    
          
    
    
    
    
      //3         
    
    
    
    
      [recordSettings setObject:   
    
    
    
    
       [NSNumber numberWithInt:   
    
    
    
    
        (pcmSettingsViewController.stereoSwitch.on ? 2 : 1)]   
    
    
    
    
       forKey:AVNumberOfChannelsKey];   
    
    
    
    
      int bitDepth =   
    
    
    
    
       [pcmSettingsViewController.sampleDepthField.text intValue];   
    
    
    
    
          
    
    
    
    
      //4          16   
    
    
    
    
      [recordSettings setObject:   
    
    
    
    
       [NSNumber numberWithInt:bitDepth] forKey:AVLinearPCMBitDepthKey];   
    
    
    
    
          
    
    
    
    
      //5   
    
    
    
    
      [recordSettings setObject:   
    
    
    
    
       [NSNumber numberWithBool:   
    
    
    
    
         pcmSettingsViewController.bigEndianSwitch.on]   
    
    
    
    
        forKey:AVLinearPCMIsBigEndianKey];   
    
    
    
    
        
    
    
    
    
      //6                
    
    
    
    
      [recordSettings setObject:   
    
    
    
    
       [NSNumber numberWithBool:   
    
    
    
    
         pcmSettingsViewController.floatingSamplesSwitch.on]   
    
    
    
    
        forKey:AVLinearPCMIsFloatKey]   
    
    
    
    
 
    
    
    
    
 
    
    
    
    
; 
   
   
   
   

  
  
  
  

   
   
   
   
-(void) startRecording {   
   
   
   
   
 [audioRecorder record];   
   
   
   
   
}   
   
   
   
   
-(void) pauseRecording {   
   
   
   
   
 [audioRecorder pause];   
   
   
   
   
 recordPauseButton.selected = NO;   
   
   
   
   
}   
   
   
   
   
-(void) stopRecording {   
   
   
   
   
 [audioRecorder stop];   
   
   
   
   
}