converting some file to mp3 in loop

ffmpeg in loop.sh

for i in *
do
  number=$(echo "$i" | awk '{print $4}' | awk -F- '{print $1}')
  name="some_"
  ffmpeg -y -i "$i" -ab 320K -ar 44100 -ac 2 -acodec mp3 $name_$number.mp3
done