NAME¶
gtkguitune - KGuitune
SYNOPSIS¶
gtkguitune
DESCRIPTION¶
This manual page documents briefly the
gtkguitune program. This manual
page was written for the Debian GNU/Linux distribution because the original
program does not have a manual page.
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.
SEE ALSO¶
- http://www.geocities.com/harpin_floh/kguitune_page.html
- Project web page.
AUTHOR¶
This manual page was written by Antonín Král
<A.Kral@sh.cvut.cz>, for the Debian GNU/Linux system (but may be used by
others).
