Detecting Blow through iPhone MIC in Cocos and then Performing animation on an image

Question

I am working on an app which is related to the recipes.In this app there is a section where user can blow air through the mic and can change the image as well the content on it

Answer 1

Use return as you get first lowpass results >0.55

I have solve the issue have a look.

-(void)readyToBlow1 {

  NSURL *url = [NSURL fileURLWithPath:@"/dev/null"];

  NSDictionary *settings = [NSDictionary dictionaryWithObjectsAndKeys:
                          [NSNumber numberWithFloat: 44100.0],                 AVSampleRateKey,
                          [NSNumber numberWithInt: kAudioFormatAppleLossless], AVFormatIDKey,
                          [NSNumber numberWithInt: 1],                         AVNumberOfChannelsKey,
                          [NSNumber numberWithInt: AVAudioQualityMax],         AVEncoderAudioQualityKey,
                          nil];

NSError *error;

recorder = [[AVAudioRecorder alloc] initWithURL:url settings:settings error:&error];

if (recorder) {
    [recorder prepareToRecord];
    recorder.meteringEnabled = YES;
    [recorder record];
    levelTimer = [NSTimer scheduledTimerWithTimeInterval: 0.01 target: self selector: @selector(levelTimerCallback1:) userInfo: nil repeats: YES];
 } 
  else
     NSLog(@"%@",[error description]);

}

 - (void)levelTimerCallback1:(NSTimer *)timer {

    [recorder updateMeters];

const double ALPHA = 0.05;
double peakPowerForChannel = pow(10, (0.05 * [recorder peakPowerForChannel:0]));
lowPassResults = ALPHA * peakPowerForChannel + (1.0 - ALPHA) * lowPassResults;
//NSLog(@"lowPassResults= %f",lowPassResults);

if (lowPassResults > 0.55)
{

    lowPassResults = 0.0;

    [self invalidateTimers];


    NextPhase *objNextView =[[NextPhase alloc]init];

    [UIView transitionFromView:self.view
                        toView:objNextView.view
                      duration:2.0
                       options:UIViewAnimationOptionTransitionCurlUp
                    completion:^(BOOL finished) {
                    }
     ];

    [self.navigationController pushViewController:objNextView animated:NO];

    **return;**


  }

}