我使用AVAudiorecorder编写用于录制声音的应用程序。在音频设置中,我将输入信号更改为PCM格式。AVAudiorecorder PCM格式
NSMutableDictionary* recordSetting = [[NSMutableDictionary alloc] init];
[recordSetting setValue :[NSNumber numberWithInt:32] forKey:AVLinearPCMBitDepthKey];
[recordSetting setValue:[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey];
[recordSetting setValue:[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsFloatKey];
我想提取的PCM,我该怎么办呢?