[kln2-devel] tune + amo

[Silhusk <si...@bl...>]

Hi,

the guitar tuner is really great!
The 'free recognition' mode can easily be used for other instruments
than guitars. Some people use A0 = 444 Hz or other frequencies, could we
let the user choose the frequency of A0 (giving 440 as default)?
(a little text field in the guitar tuner's window would be enough)

the guitar tuner is not perfect... :(
Some time KLN2 hangs up or generates a 'segmentation fault'.
I think it's because of some negative pitchs it returns.

some debug - Stack dump:
BaseMusicNote::numOfNoteInOctave (pitch=-6) at basemusicnote.cpp: 119
BaseMusicNote::isWhite (pitch=-6) at basemusicnote.cpp: 122
BaseMusicNote::accidentalOf (pitch=-6) at basemusicnote.cpp: 144
BaseMusicNote::stringName (pitch=-6) at basemusicnote.cpp: 373
BaseMusicNote::stringName (numInOctave=0, accident=0, shorty=false) at
aseusicote.cpp: 191
BaseMusicNote::stringName (pitch=-6) at basemusicnote.cpp: 373
BaseMusicNote::stringName (numInOctave=0, accident=0, shorty=false) at
aseusicote.cpp: 191
BaseMusicNote::stringName (pitch=-6) at basemusicnote.cpp: 373
BaseMusicNote::stringName (numInOctave=0, accident=0, shorty=false) at
aseusicote.cpp: 191
BaseMusicNote::stringName (pitch=-6) at basemusicnote.cpp: 373
[...]
BaseMusicNote::stringName (numInOctave=0, accident=0, shorty=false) at
aseusicote.cpp: 191
BaseMusicNote::stringName (pitch=-6) at basemusicnote.cpp: 373
GuitarTunerDialog::customEvent (this=0x8250390, e=0xfffffffa) at
guitartuner.cpp: 241
QObject::event () from /usr/lib/libqt-mt.so.3
[...]

stringName functions recursively call themselves forming an endless loop
and then causing the segmentation fault :(
this is my diagnosys.


## another midi output
I wrote another midi output way using fluidsynth
(http://www.fluidsynth.org/) wich is a software synthesizer.
Unfortunately it uses SoundFonts (requiring another file), but some can
be freely downloaded from
http://www.geocities.com/SiliconValley/Campus/8645/sf2.html
http://www.hammersound.net/cgi-bin/soundlink.pl?action=view_category&category=Collections
(I used 'Vintage Dreams')
Of course SoundFonts can also be created! (see
http://smurf.sourceforge.net/ )
KLN2 looks for a SoundFont file named 'kln2fluid.sf2' that must be
placed in program's current directory. It would be better to let the
user choose wich file to use, but this means edit MIDI_setup dialog and
options' struct. Can I do it?
Note: the SoundFont file is not present in the cvs yet, but I'm trying
to make a minimalist one, just with piano and guitar.


Regards,
Carlo