Am 17.05.2011 23:30, schrieb Federico Bruni:
I have two questions about harmonics.
First one is about harmonicByRatio. I've seen in the command index that
it is undocumented (like harmonicByFret).
There's an explanation here:
http://lilypond-s-support-for-tablatures.3383434.n2.nabble.com/harmonics-in-tablature-td5518526.html
But it's a bit difficult for me right now.
Can you help me?
Hi Federico,
it's in the snippets:
http://lilypond.org/doc/v2.13/Documentation/snippets/fretted-strings#fretted_002dstring-harmonics-in-tablature
Also, I've noticed that \harmonicsOn works only in Staff and not in
TabStaff. There's a reason for this behavior or it's a bug?
A bug, probably.
Finally, after calling \harmonicByRatio the following harmonics are
raised by one octave. Again, a bug or I'm missing something?
You are in relative mode, so the pitches influence each other.
\harmonicByRatio computes the *sounding pitch* (it doesn't display the
given pitch, as
\harmonic does!) corresponding to the spot where your finger touches the
string, so
\harmonicByRatio #1/2 e,
resembles the harmonic you'll get when you touch the 6th string in the
middle,
i.e. the 12th fret. 1/3 means the 7th fret, whereas 2/3 the 19th and so on.
This mostly makes sense with empty strings, so your example with the
note d on the
3rd string won't work as expected. Simply use g\3, and it is fine.
\harmonicByFret is just the same, but you specify the fret, not the ratio.
So
\harmonicByFret #7 e, and \harmonicByRatio #1/3 e, are identical.
HTH a bit,
Marc
You can see everything in the attached example.
Thanks in advance,
Federico
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