.TH WMKBD 1 "September 06, 2003" .SH NAME gtkguitune - KGuitune .SH SYNOPSIS .B gtkguitune .br .SH DESCRIPTION This manual page documents briefly the .B gtkguitune program. This manual page was written for the Debian GNU/Linux distribution because the original program does not have a manual page. .PP Guitune is a linux program for tuning guitars and other instruments by using the method of Schmitt-triggering, i.e. counting the number of triggerings between two trigger levels in a certain amount of time. With FFT you need many samples to archieve the accuracy needed for tuning instruments. You often get times of around 1 second between two measurements and the computer is quite busy in this second calculating the FFT. Using Schmitt-triggering you get a measurement every 10th of a second or even less (depending on the sample frequency you use). Most of the time the computer only waits for the samples. The Trigger levels are adjustable. For a pure sine-wave the trigger levels could be zero. But for a wave wth overtones like the one in the figure above you need a non-zero triggerlevel. It is preadjusted to a level of 60% of the current maximum which should be able to deal with most instruments. .SH SEE ALSO .TP .BR http://www.geocities.com/harpin_floh/kguitune_page.html Project web page. .SH AUTHOR This manual page was written by Anton\['i]n Kr\['a]l , for the Debian GNU/Linux system (but may be used by others).