In general, wooden objects will not sound "wooden" unless a stochastic component is present in the sound (try banded waveguides). 

Hi Stefan,

I'm only somewhat familiar with Banded Waveguides, but I'll try to
answer with what I know, and hopefully others will correct me.  From
what I understand, it's a series of waveguides comprised of bandpass
filters and delay lines, where the bandpass frequency and delay line
length are tuned together.  Each of the waveguides then is tuned to a
different frequency, and  is used like modal resonators.  The diagrams
I've seen has the sum output of the waveguides used as the output of
the instrument, though it also feeds back into the bank via some
interaction.

Some links:

http://www.mitpressjournals.org/doi/abs/10.1162/014892604322970643
http://www.mitpressjournals.org/doi/abs/10.1162/014892604322970634
http://en.wikipedia.org/wiki/Banded_waveguide_synthesis
http://mt.music.mcgill.ca/~rudrarajuv/modeling/seminarReport.htm


I was trying to create an example but was having some troubles with
very high instability.  Then I tried to write an example based on
STK's source code, but it looks like it is doing something different
than from the diagrams I saw in articles/webpages (I didn't see the
sum output from the waveguides returning to interact/mix with the
input signal, only the singular bands output returning to the band,
but I haven't studied this in depth, and my results were not good :P).
With the first attempt, I had used just butterbp opcodes feeding into
vdelay3 opcodes, and used a set of those for each of the modal
frequencies, and an mpulse opcode used as the exciter with a single
impulse.  That did sort of work, but was highly unstable (using the
limit opcode is so useful during instrument building :D ).

Anyways, hope that's of some use, and hope others can correct anything
I wrote above!

steven

p.s. - Otherwise, you can use the mode opcode with the modal
frequencies chart.  This article has some working code for that:

http://www.csounds.com/journal/issue16/resonators.html



On Tue, Mar 6, 2012 at 7:56 PM, Stefan Thomas
 wrote:
> Dear community,
> in the appendix of the manual I've read about modal frequencies:
>>
>> In general, wooden objects will not sound "wooden" unless a stochastic
>> component is present in the sound (try banded waveguides).
>
> Unfortunately I haven't any idea what I have to imagine under "banded
> waveguides". Could someone be so kind  giving an short example?
> Thanks
> Stefan