#!/bin/bash
  # example usage:
  # ./local/create_sample.sh /ha/projects/vystadial/data/asr/en/voip/ Results/vystadial-sample/ test 100
  # note that it suppose there are only *.wav and *.wav.trn and the 
  # the n is the numbero of files in the directory
  
  src=$1
  tgt=$2
  typ=$3   # dev/test/train
  n=$4
  
  src_dir=$src/$typ
  tgt_dir=$tgt/$typ
  mkdir -p $tgt_dir
  ls $src_dir | head -n $n \
  | while read f ; do
      cp $src_dir/$f $tgt_dir
  done