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2014/10/15 ¤U¤È 10:15:32
iphone Programming Glossary: updatemetersRecord the sound and play it back with changed pitch http://stackoverflow.com/questions/10549317/record-the-sound-and-play-it-back-with-changed-pitch settings recordSetting error error recorder AVAudioRecorder alloc init recorder setDelegate self recorder updateMeters recorder prepareToRecord AVAudioSession sharedInstance setCategory AVAudioSessionCategoryPlayAndRecord error nil In Order.. @ error in initilising of the recorder @ error localizedDescription void levelTimerCallback NSTimer timer recorder updateMeters const double ALPHA 0.05 NOISE FILERATION ALGORITHMS double peakPowerForChannel pow 10 0.05 recorder peakPowerForChannel.. 0.020 if audioMonitorResults1 .05 the value of audioMonitorResults may be equal to 10 for device recorder1 updateMeters recorder1.meteringEnabled YES recorder.meteringEnabled YES recorder1 record NSLog @ SOUND IS DETECTED NSLog @ f recorder1..
http://stackoverflow.com/questions/11173605/detecting-a-clap-in-ios figure out how to sample the audio with SCListener Here is my attempt void levelTimerCallback NSTimer timer recorder updateMeters const double ALPHA 0.05 double peakPowerForChannel pow 10 0.05 recorder peakPowerForChannel 0 lowPassResults ALPHA peakPowerForChannel..
Detecting Blow through iPhone MIC in Cocos and then Performing animation on an image http://stackoverflow.com/questions/12985461/detecting-blow-through-iphone-mic-in-cocos-and-then-performing-animation-on-an-i image.frame CGRectMake 50 100 150 200 self.view addSubview image void levelTimerCallback NSTimer timer recorder updateMeters const double ALPHA 0.05 double peakPowerForChannel pow 10 0.05 recorder peakPowerForChannel 0 lowPassResults ALPHA peakPowerForChannel.. detected and when it ends and you do change images only for new blows void levelTimerCallback NSTimer timer recorder updateMeters const double ALPHA 0.05 double peakPowerForChannel pow 10 0.05 recorder peakPowerForChannel 0 lowPassResults ALPHA peakPowerForChannel.. value increases so I would suggest the following implementation void levelTimerCallback NSTimer timer recorder updateMeters const double ALPHA 0.05 double peakPowerForChannel pow 10 0.05 recorder peakPowerForChannel 0 double currentLowPassResults..
AVAudioRecorder won't record IF movie was previously recorded & played http://stackoverflow.com/questions/4148123/avaudiorecorder-wont-record-if-movie-was-previously-recorded-played @ d @ err domain err code err userInfo description return NO audioRecorder peakPowerForChannel 8 audioRecorder updateMeters audioRecorder.meteringEnabled YES audioRecorder record @catch NSException e return NO recording YES return YES Stop Recording..
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