title: Mix .L and .R files into a stereo file using SOX in bulk
body: <p>I have a folder full of WAV files with separate L and R channels. I've been using SOX for some things like changing the sample rate of the audio files inside a specific folder using this code: </p>
  
  <pre><code>for file in *.wav; do sox $file -r 44100 -b 24 converted/$(basename $file) -V; done
  </code></pre>
  
  <p>For example, I have these two files that I want to merge: 
   - CLOSE_1_02.L.wav
   - CLOSE_1_02.R.wav
  I would like to merge them in a stereo file (L in the left channel and R in the right channel) with the name: "CLOSE_1_02.wav". Can anybody help me?</p>
  
  <p>Thanks.</p>