以下代码听起来很慢。怎么了?
AudioStreamBasicDescription audioFormat;
audioFormat.mSampleRate = 22050.0;
audioFormat.mFormatID = kAudioFormatLinearPCM;
audioFormat.mFramesPerPacket = 1;
audioFormat.mChannelsPerFrame = 1;
audioFormat.mBytesPerFrame = 2;
audioFormat.mBytesPerPacket = 2;
audioFormat.mBitsPerChannel = 16;
audioFormat.mReserved = 0;
audioFormat.mFormatFlags = kLinearPCMFormatFlagIsBigEndian |
kLinearPCMFormatFlagIsSignedInteger |
kLinearPCMFormatFlagIsPacked;
//NSString* recordFilePath=[NSTemporaryDirectory() stringByAppendingPathComponent: @"recordedFile.caf"];
NSString* recordFilePath=@"/recordedFile.caf";
NSURL *toURL = [NSURL fileURLWithPath:recordFilePath];
ExtAudioFileCreateWithURL((CFURLRef)toURL,
kAudioFileCAFType,
&audioFormat,
NULL,
kAudioFileFlags_EraseFile,
&extAudioFile);
ExtAudioFileSetProperty(extAudioFile,
kExtAudioFileProperty_ClientDataFormat,
sizeof(AudioStreamBasicDescription),
&audioUnitOutputFormat);
ExtAudioFileSeek(extAudioFile, 0);
[self EnableAudioInputiPhone];
最佳答案
实际记录的采样率是44100,与您指定的文件格式相反吗?
关于iphone - AudioUnit的奇怪缓慢录音,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/4029951/