title: How to write wav file with 32-bit float data?
body: <p>I would like to be able to write PCM wav files with 32-bit floating point samples. This seems to be a valid format since libsndfile claims to support it.</p>
  
  <p>However, if I specify in my header a sample size of 32-bits, any program I open it in assumes that it's 32-bit integer data. What flags, etc need to be set in the wav file header to specify floating point data?</p>
  
  <p>Can anyone point me to some documentation that explains how to do this?</p>