AVAudioRecorder Class Reference

Tasks

Initializing an AVAudioRecorder Object

• – initWithURL:settings:error:

Configuring and Controlling Recording

• – prepareToRecord
• – record
• – recordForDuration:
• – pause
• – stop
•   delegate  property
• – deleteRecording

Managing Information About a Recording

•   recording  property
•   url  property
•   currentTime  property
•   settings  property

Using Audio Level Metering

•   meteringEnabled  property
• – updateMeters
• – peakPowerForChannel:
• – averagePowerForChannel:

@property (readonly) NSTimeInterval currentTime;

@property (assign) id <AVAudioRecorderDelegate> delegate;

@property (getter=isMeteringEnabled) BOOL meteringEnabled;

@property (readonly, getter=isRecording) BOOL recording;

@property (readonly) NSDictionary *settings;

@property (readonly) NSURL *url;

NSString *const AVFormatIDKey;
NSString *const AVSampleRateKey;
NSString *const AVNumberOfChannelsKey;

NSString *const AVLinearPCMBitDepthKey;
NSString *const AVLinearPCMIsBigEndianKey;
NSString *const AVLinearPCMIsFloatKey;

NSString *const AVEncoderAudioQualityKey;
NSString *const AVEncoderBitRateKey;
NSString *const AVEncoderBitDepthHintKey;

NSString *const AVSampleRateConverterAudioQualityKey;

enum {
   AVAudioQualityMin       = 0,
   AVAudioQualityLow       = 0x20,
   AVAudioQualityMedium    = 0x40,
   AVAudioQualityHigh      = 0x60,
   AVAudioQualityMax       = 0x7F
};
typedef NSInteger AVAudioQuality;