title: Convert android wav file with SOX
body: <p>Hi I use android to generate a wav file which is upload before to my server. In order to play this WAV file in a telephony system I must convert it to 16000 bitrate. The problem is the wav generate by android because I have this error : </p>
  
  <pre><code>WAVE: RIFF header not found
  </code></pre>
  
  <p>here is my sox script :</p>
  
  <pre><code># sox -t wav input.wav output.wav
  </code></pre>
  
  <p>Thanks for your help!</p>
  
  <p>UPDATE : The wav created by android give me that : ISO Media, MPEG v4 system, 3GPP</p>