Convert wav files in current directory to mp3, spx, vorbis, opus

convert.sh

# convert_wavs_to() {
#   extension="$1"
#
#   if [ ! -d "$extension" ]; then
#     mkdir -p "$extension"
#
#     for f in *.wav; do
#       ffmpeg \
#         -i "$f" \
#         "$extension/$(basename "$f" .wav).$extension"
#     done
#   fi
# }

for f in *.wav; do
  ffmpeg \
    -i "$f" \
    -b:a 20k \
    "$(basename "$f" .wav).mp3"
done

rm *.wav

# convert_wavs_to 'mp3'
# convert_wavs_to 'spx'
# convert_wavs_to 'ogg'
# convert_wavs_to 'opus'