╭────╮ root@gbws-lin298 ─── [Thu Nov 22 01:17:29] [pts/12] ─────── ─ 
╰─[~]╯ 
 ▻ less do_speex.sh 
#!/bin/bash

for i in *.wav
do echo $i && sox "$i" -r 32000 -c 1 "$(echo $i | sed -e 's/.wav$/_mono_32.wav/')" && rm "$i"
done

for i in *.wav
do echo $i && speexenc --author "Douglas Adams" --title "Hitchhiker's Guide To The Galaxy Tertiary Phase" \
              "$i" "$(echo $i | sed -e 's/_mono_32.wav/.spx/')" && rm "$i"
done