Bulk convert WAV to CAF and sustain directory structure

audioConversionStructured.sh

#!/bin/bash

shopt -s globstar

src_dir="audio"
dest_dir="audio_new"

for orig_path in "${src_dir}"/**/*.wav; do
    new_path=${orig_path/$src_dir/$dest_dir}
    dir_hier=${new_path%/*}
    new_path=${new_path%.*}

    mkdir -p "$dir_hier"
    ffmpeg -i "$orig_path" "${dest_dir}.caf"
done