Convert multitrack WAV files generated by X-Live card into one file per track

convert_xlive.sh

#!/bin/bash

# Accepts a single argument, which is a path to the directory containing all the
# WAV files generated by a recordings from the X-Live card.
# Looks for files like 000000.WAV 000001.WAV 000002.WAV etc.
#
# Outputs files like Ch01.WAV Ch02.WAV Ch03.WAV etc.
#
# Requires sox


cd "$1"

shopt -s nullglob # Empty array when no matching files
wavFiles=(*.WAV)

echo ${#wavFiles[@]}

if [ ${#wavFiles[@]} -eq 0 ]; then
  echo "No WAV files found in `pwd`"
  exit
fi

echo "Found these wav files: ${wavFiles[@]}"

for run in {01..32}; do
  echo "Splitting out channel ${run}"
  channel=$(printf "%02d" $run)

  `sox ${wavFiles[@]} Ch${channel}.wav remix ${run}`
done

echo "Done."

The WAV files provided by X-Live are 32 channel WAV files, each broken into ~11 minute chunks or so.

This essentially runs 32 sox commands, each of which are something like this example:

sox 00000001.WAV 00000002.WAV 00000003.WAV Ch01.wav remix 01

What that does, it it takes channel 01 (remix 01) of the input files (00000001.WAV 00000002.WAV 00000003.WAV) and concats them all into a single channel (but full duration) wav (Ch01.wav)

This takes some time, I'm sure there are more efficient approaches, but this also totally and reliably works.