preprocess.sh

   1 #!/bin/bash
   2 set -e
   3
   4 MAXPROCS=4
   5 FREQUENCY=44100
   6 FREQUENCY=22050
   7
   8 rm -rf wav mfcc
   9 mkdir -p wav mfcc
  10 i=0
  11 for f in orig/*/*.flac; do
  12         while [ $(jobs -p | wc -l) -ge $MAXPROCS ]; do sleep 1; done
  13
  14         echo $f
  15         BN="$(echo $f | grep -Po "(?<=/[0-9][0-9]_-_).*(?=\.flac)")"
  16         NUM="$(printf '%02d' "$i")"
  17         WAV="wav/$NUM.wav"
  18         MFCC="mfcc/$NUM.mfcc"
  19
  20         (       echo "Processing $f" &&
  21                 sox "$f" -V1 -c 1 -r $FREQUENCY $WAV &&
  22                 python mfcc.py < "$WAV" > "$MFCC"
  23         ) &
  24         i=$((i+1))
  25 done
  26 wait