Hello
On Sunday 20 September 2009 15:04:39 Tom Cato Amundsen wrote:
> I would really get better sound in the csound exercises. In addition to
> something like a flute or violin, maybe a more percussive sound, for example
> similar to a piano sound, would be useful. Can you send me a matching .orc
> and .sco file when you have some sounds ready that I can feed directly to
> CSound.
I would be happy to help. I am not expert on csound but I will look for better
sounding instrument declarations and prepare the .orc and .sco files.
> I can modify two working files into exercises, but getting "f1 0
> 4096 10 1 1.25 0.95 0.8 0.6 0.4 0.2" to work with the existing score code in
> the lesson files is beyond what I can do in 5 minutes...
well, it takes actually 10 seconds... what I did was:
sed -i 's/f1 0 4096 10 1/f1 0 4096 10 1 1.25 0.95 0.8 0.6 0.4 0.2/g'
csound*harmonic*
in ~/lesson-files
It makes the difference really MUCH clearer.
I made the replacement now only for harmonic interval exercises but actually
it would help also for the melodic intervals.
best!
The line 'f1 0 4096 10 1 1.25 0.95 0.8 0.6 0.4 0.2' means - create sine wave
with haromics that have described relative amplitude (the numbers after '10': 1
- 1st harmonic 100% of the given amplitude, 2nd 125 % etc)
tarmo
>
> Tom Cato
> 0-knowledge about csound
>
> On Sun, Sep 20, 2009 at 12:24 AM, Tarmo Johannes <[email protected]>wrote:
>
> > Hello!
> >
> >
> > After some time I had a look to Solfege again and tried out some csound
> > based intonation exercises. It is a ver-very important issue and really
> > great that the exercises are there!
> >
> >
> > I wrote it also to bug-repports (not really a bug though) but i write it
> > also to the mailing-list, if anybody is busy writing new lesson files:
> >
> >
> > I recommend to use a waveform (f-statement) with more harmonics in csound
> > lessonfiles for intonation, especially in case of harmonic intervals:
> >
> >
> > Instead of:
> > f1 0 4096 10 1 ; use GEN10 to compute a sine wave
> >
> >
> > use
> >
> >
> > f1 0 4096 10 1 1.25 0.95 0.8 0.6 0.4 0.2 ; sine wave with 6 overtones
> >
> >
> > or similar. You can experiment with the ratio and number of the harmonics.
> >
> >
> > Why? - Two simultanously sounding notes are in tune when their harmonics
> > coinside as much as possible. Otherwise you will hear the so called beating
> > or pulsation. So it makes actually very little sense if the signal is just
> > sine waves with no harmonics (as it is now). In reality, of course, there is
> > no TRUE sine tone because all loudspeakers and also our ears add harmonics
> > so we can still decide. But if we add the harmonics to the waveform (and it
> > is so easy with csound!), making difference is so much easier!
> >
> >
> > Have a look at
> > http://code.google.com/p/solfege/issues/detail?id=137&q=csound for some
> > examples.
> >
> >
> > greetings!
> > tarmo
> >
> >
> > PS maybe the waveform I suggested is not the most beautiful one. It is
> > something like flute but I did not take much care.. If yoy want me, I can
> > experiment to find more musical one!
> >
> >
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>
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