2014/10/15 下午 10:14:13

iphone Programming Glossary: sint16

http://stackoverflow.com/questions/4972677/reading-audio-samples-via-avassetreader

buffer for int bufferCount 0 bufferCount audioBufferList.mNumberBuffers bufferCount SInt16 samples SInt16 audioBufferList.mBuffers bufferCount .mData for int i 0 i numSamplesInBuffer i amplitude for the sample is.. buffer for int bufferCount 0 bufferCount audioBufferList.mNumberBuffers bufferCount SInt16 samples SInt16 audioBufferList.mBuffers bufferCount .mData for int i 0 i numSamplesInBuffer i amplitude for the sample is samples i assuming..

Drawing waveform with AVAssetReader

http://stackoverflow.com/questions/5032775/drawing-waveform-with-avassetreader

averaged sample data and returns a UIImage. Note these samples are not playable audio samples. UIImage audioImageGraph SInt16 samples normalizeMax SInt16 normalizeMax sampleCount NSInteger sampleCount channelCount NSInteger channelCount imageHeight.. a UIImage. Note these samples are not playable audio samples. UIImage audioImageGraph SInt16 samples normalizeMax SInt16 normalizeMax sampleCount NSInteger sampleCount channelCount NSInteger channelCount imageHeight float imageHeight CGSize.. imageHeight float channelCount float normalizeMax for NSInteger intSample 0 intSample sampleCount intSample SInt16 left samples float pixels float left pixels sampleAdjustmentFactor CGContextMoveToPoint context intSample centerLeft pixels..

How to record sound produced by mixer unit output (iOS Core Audio & Audio Graph)

http://stackoverflow.com/questions/7118429/how-to-record-sound-produced-by-mixer-unit-output-ios-core-audio-audio-graph

step is to figure out what audio format it's receiving and handle it appropriately. Try adding this to your callback SInt16 dataLeftChannel SInt16 ioData mBuffers 0 .mData for UInt32 frameNumber 0 frameNumber inNumberFrames frameNumber NSLog @.. what audio format it's receiving and handle it appropriately. Try adding this to your callback SInt16 dataLeftChannel SInt16 ioData mBuffers 0 .mData for UInt32 frameNumber 0 frameNumber inNumberFrames frameNumber NSLog @ sample lu d frameNumber.. monoCanonicalFormat.mSampleRate graphSampleRate AudioStreamBasicDescription mono16Format bytesPerSample sizeof SInt16 mono16Format.mFormatID kAudioFormatLinearPCM mono16Format.mFormatFlags kAudioFormatFlagIsSignedInteger kAudioFormatFlagIsPacked..

Can anybody help me in recording iPhone output sound through Audio Unit

http://stackoverflow.com/questions/8615358/can-anybody-help-me-in-recording-iphone-output-sound-through-audio-unit

lu timeInSeconds inBusNumber inNumberFrames printAudioUnitRenderActionFlags ioActionFlags AudioBufferList bufferList SInt16 samples inNumberFrames A large enough size to not have to worry about buffer overrun memset samples 0 sizeof samples bufferList.mNumberBuffers.. 0 .mData samples bufferList.mBuffers 0 .mNumberChannels 1 bufferList.mBuffers 0 .mDataByteSize inNumberFrames sizeof SInt16 ViewController THIS THIS __bridge ViewController inRefCon OSStatus status status AudioUnitRender THIS mAudioUnit ioActionFlags..