title: Audio Unit recording: increased volume of buffers
body: <p>I am building an audio recording app for iPhone in which I use remote audio units. After performing some audio analysis on incoming buffers I write the buffers to disk using:</p>
  
  <p>ExtAudioFileWriteAsync</p>
  
  <p>However, the problem I have is that the recorded buffers are quieter than I would like.</p>
  
  <p>I would like to increase the volume of the buffers by manually multiplying them by a volume factor just prior to writing to disk. Can anyone please explain to me the best way to do this?</p>
  
  <p>(For various reasons, a manual adjustment at the final stage is more attractive than changing any of the audio unit properties, which otherwise work well for my application.)</p>
  
  <p>Thanks in advance!!</p>