preprocess.sh

   1 #!/bin/bash
   2 set -e
   3
   4 MAXPROCS=4
   5 FREQUENCY=44100
   6 FREQUENCY=22050
   7 FREQUENCY=16000
   8
   9 rm -rf wav mfcc
  10 mkdir -p wav mfcc
  11 i=0
  12 for f in orig/*/*.flac; do
  13         while [ $(jobs -p | wc -l) -ge $MAXPROCS ]; do sleep 1; done
  14
  15         echo $f
  16         BN="$(echo $f | grep -Po "(?<=/[0-9][0-9]_-_).*(?=\.flac)")"
  17         NUM="$(printf '%02d' "$i")"
  18         WAV="wav/$NUM.wav"
  19         MFCC="mfcc/$NUM.mfcc"
  20
  21         (       echo "Processing $f" &&
  22                 sox "$f" -V1 -c 1 -r $FREQUENCY $WAV
  23         ) &
  24         i=$((i+1))
  25 done
  26 wait