deanturpin · June 17, 2019 10:29
diff --git a/read-wav.sh b/read-wav.sh
 #!/bin/bash

 [[ $# == 1 ]] && count=$1 || count=750

 # Fetch some samples
 nibbles=8
 readarray samples < <(xxd -cols $nibbles -plain -s 42 -len $(( nibbles * count )))

 # Loop through samples
 i=0
 for s in ${samples[*]}; do

 	# Extract left channel only
 	s=${s:0:4}

 	# Shift so all values are positive
 	echo -e $i\\t$(( 16#$s + 16#ffff ))
 	(( ++i ))
  
 done | graph -T png
	#!/bin/bash

	[[ $# == 1 ]] && count=$1 \|\| count=750

	# Fetch some samples
	nibbles=8
	readarray samples < <(xxd -cols $nibbles -plain -s 42 -len $(( nibbles * count )))

	# Loop through samples
	i=0
	for s in ${samples[*]}; do

	# Extract left channel only
	s=${s:0:4}

	# Shift so all values are positive
	echo -e $i\\t$(( 16#$s + 16#ffff ))
	(( ++i ))

	done \| graph -T png