iphone - 如何在 iOS 中为 AVCaptureAudioDataOutput 设置音频设置

Question

我想为 AVCaptureAudioDataOutput 设置以下音频设置，我该怎么做？

NSMutableDictionary *recordSettings = [[NSMutableDictionary alloc] initWithCapacity:10];
    [recordSettings setObject:[NSNumber numberWithInt: kAudioFormatLinearPCM] forKey: AVFormatIDKey];
    [recordSettings setObject:[NSNumber numberWithFloat:44100] forKey: AVSampleRateKey];
    [recordSettings setObject:[NSNumber numberWithInt:1] forKey:AVNumberOfChannelsKey];
    [recordSettings setObject:[NSNumber numberWithInt:705600] forKey:AVEncoderBitRateKey];
    [recordSettings setObject:[NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey];


self.audioRecorder = [[[ AVAudioRecorder alloc] initWithURL:[NSURL fileURLWithPath:self.audioRecorderDestinationFilePath] settings:recordSettings error:nil]autorelease];


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