Man Linux: Main Page and Category List


       gtkguitune - KGuitune




       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.

              Project web page.


       This manual page was written by Antonín Král  <>,  for
       the Debian GNU/Linux system (but may be used by others).

                              September 06, 2003                      WMKBD(1)