[PD] saxophone/truphet/trabone -LIKE sound in pd

Andy Farnell padawan12 at obiwannabe.co.uk
Sun Jan 18 17:30:39 CET 2009

What I have learned about synthesising musical instruments is
to understand the shape and performance space of them and not 
strive for high spectral realism but for consistent acoustic 

Because musical instruments are part of a well recognised group
of sounds within which we can easily distinguish quality variance
the unreal use of synthesis makes facsimiles extremely dull, 
especially those based on S+S synthesis, and those made by 
modern physical (waveguide modelling) too.

The problem is that as we approach high spectral realism the critical 
faculties we use to hear are more likely to focus on features that 
don't feel right. You might have heard this referred to in computer 
graphics as the "uncanny valley" where _almost_ photo-real human 
models seem revoltingly unreal while crude cartoon characters seem 
"more human", and are able to make expressive gestures that 
pseudo-humans cannot get away with.

For very good spectral realism of brass try expanding upon 
something like "Contiguous group wavetable synthesis of the french 
horn" [Andrew Horner and Lydia Ayers (187 in the Csound book)] 
combined with a Chebyshev table shaping approach for the spectral
dynamics. These two techniques combined will lead towards
realistic results.

But what really works, in my opinion, isn't to go for classical 
realism at all. Look for something that gives you the parametric
expression of brass but extends it to the hyper-real.

This is to be found in
 1) transient overshoot, tonguing, stopping
 2) very careful amp and spectral correlation (probably
 using lookup tables for the xfer functions), embrochure postion 
 3) Non linear, cubic and intermodulation artifacts from overdriving
 the cavity. (careful amp controlled distortion)
 4) Careful high pass design for the bell + horn end correction in tuning

Listen to the Travelogue version of "Being Boiled" on the Human League's
second album. That is synthetic brass (done on a Roland system 100 I think)
that pulls down it's trousers and shits all over _any_ modern digital
synthesiser I have ever heard. Not because it's real, but because in
it's simplicity it uses a few parameters to extend the performance
space of brass into the hyper-real, an acoustically viable expanded
performance space.

On Sat, 17 Jan 2009 08:13:11 +0000
errordeveloper at gmail.com wrote:

> hi
> i'd like to make a synth which would sound quite like the metal
> wind-blown instruments ..
> unfortunatly i haven't got Perry Cook's book handy, i had from the
> library before, but now ..
> has anyone done any of similar stuff in pd?
> my project is not about making the same sound and/or simulate the
> instruments, but just make a synth which would have some similar sound
> character, i mean something that wouldn't just remind the instrument
> sound (like some cheap old kidies synthie could //) ....
> more like a sax put through some spacy effects is what i'm looking for!
> cheers,
> happy patching!
> -- 
> ilya 
> _______________________________________________
> Pd-list at iem.at mailing list
> UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list

Use the source

More information about the Pd-list mailing list