title: Objective C - record audio noise
body: <p>I'm making an app that allows user to record audio.<br>
  I got it to work but when I playback the audio, the audio has a lot of static background noise. (like "sssssttttt").<br>
  Is there any property I can use to reduce that "sssssttttt" static background noise?</p>
  
  <p>Below is the setting that I'm currently using</p>
  
  <pre><code>NSDictionary *settings = [NSDictionary dictionaryWithObjectsAndKeys:
      [NSNumber numberWithFloat: 44100.0],                 AVSampleRateKey,
      [NSNumber numberWithInt: kAudioFormatAppleLossless], AVFormatIDKey,
      [NSNumber numberWithInt: 1],                         AVNumberOfChannelsKey,
      [NSNumber numberWithInt: AVAudioQualityMax],         AVEncoderAudioQualityKey,
      nil];
  </code></pre>
  
  <p>Thanks,<br>
  Tee</p>