#!/usr/bin/env bash

. ./path.sh || exit 1;
# Begin configuration section.
nj=32
cmd=./utils/run.pl
feats_dim=80

echo "$0 $@"

. utils/parse_options.sh || exit 1;

fbankdir=$1

split_dir=${fbankdir}/cmvn/split_${nj};
mkdir -p $split_dir
split_scps=""
for n in $(seq $nj); do
    split_scps="$split_scps $split_dir/wav.$n.scp"
done
utils/split_scp.pl ${fbankdir}/wav.scp $split_scps || exit 1;

output_dir=${fbankdir}/cmvn
logdir=${fbankdir}/cmvn/log
$cmd JOB=1:$nj $logdir/cmvn.JOB.log \
    python utils/compute_cmvn.py -d ${feats_dim} -a $fbankdir/ark -i JOB -o ${output_dir} \
        || exit 1;

python utils/combine_cmvn_file.py -d ${feats_dim} -c ${output_dir} -n $nj -o $fbankdir

echo "$0: Succeeded compute global cmvn"