2wav() {
    for f in "$@"; do
        rm -f "${f%.*}.wav"
        ffmpeg -i "$f" -map_metadata -1 -bitexact -ar 8000 -ac 1 -af volume=2 -acodec pcm_s16le -dither_scale 0 "${f%.*}.wav"
    done
}
2wavhq() {
    for f in "$@"; do
        rm -f "${f%.*}.wav"
        ffmpeg -i "$f" -map_metadata -1 -bitexact -ar 11025 -acodec pcm_s16le -dither_scale 0 "${f%.*}.wav"
    done
}