#!/bin/ash
cols=30

clear
arecord -q --period-size=50 --buffer-size=150 -r 4000 -f U8 -t raw -D loopout | hexdump -e ''$(expr $cols + 1)'/2 "%o ""\n"' | tr -d '*' | xargs -n $cols -r ./micro-utils/bin/spark -n