mac bash : tts to file from .txt reading by line with gap duration Hint

#!/bin/sh

#ttsTXT.sh TNM01-01 155

NAME=$1

RATE=$2

[ "$RATE" = "" ] && RATE=155

cmd="say -v Yuna -r $RATE -o $NAME.aiff -f $NAME.txt"

echo $cmd #eval $cmd

cmd="lame -m s $NAME.aiff $NAME.mp3"

echo $cmd #eval $cmd

MF=$2; N=0; FS="";

sed -e $'s/[.] */\\\n/g' $NAME.txt > ${NAME}_tts.txt

while read line; do

L=${line//[[":space:"]]/}

if [ ! -z "$L" ]; then

echo $L

N=$((N+1))

SN=$( printf "%05d" $N )

cmd="say -v Yuna -r $RATE -o $NAME-$SN.aiff \"$L\""

echo $cmd; eval $cmd;

done < ${NAME}_tts.txt

N=0

#find $NAME*.aiff -type f -print0 | xargs -0 ls -tr | while read file; do

# N=$((N+1))

# new=$( printf "%05d.%s" $N "${file##*.}" )

# mv "$file" "$new"

#done

N=0; FS=""; MF="$NAME-all.aiff"; MAP=""; GAP=""

for f in $NAME*.aiff; do

FS="$FS -i \"$f\" "

MAP="${MAP}[${N}][g${N}]"

N=$((N+1))

done

NG=$(($N*2))

G=$(($N-1))

for (( i=0; i<$N; i++ )); do

GAP="${GAP}[$N]atrim=duration=1[g${i}];"

done

cmd="ffmpeg \

$FS \

-f lavfi -i anullsrc \

-filter_complex '${GAP}${MAP}concat=n=$NG:v=0:a=1[a]' -map '[a]' \

$MF"

echo $cmd

eval $cmd