[mirrors/Programs.git] / c / goertzel / guitar-tuner.sh

#!/bin/sh
#Example of guitar tuner using goertzel:
#165Hz = Low E
#How to tune:
#There are 3 frequencies, you have to make the middle one (target frequency) most loud
#and the other two surrounding it shoud show approximately same intensity

arecord -r 44100 | ./goertzel -r 44100 -f 150 -f 165 -f 180 | ./histogram.pl
Commit	Line	Data
2a1679b4 H	1	#!/bin/sh
	2	#Example of guitar tuner using goertzel:
	3	#165Hz = Low E
	4	#How to tune:
	5	#There are 3 frequencies, you have to make the middle one (target frequency) most loud
	6	#and the other two surrounding it shoud show approximately same intensity
	7
	8	arecord -r 44100 \| ./goertzel -r 44100 -f 150 -f 165 -f 180 \| ./histogram.pl