Casio CZ/ VZ/ FZ - Pro Series

I wonder if any of you guys having a deeper knowledge about 
psychoacoustics. It might be less costly to create algorithms that 
fits to our limited perception than trying to recreate physical 
models or exact waveform copies...
  
Just my 2 cents!

...Summa


On 16 Aug 2008 at 0:27, synergeezer wrote:

> Thanks. And thanks for the links.
> Here's one for you, the complete text of Prof. David L. Benson's (of
> the U. of Aberdeen) "Music: a Mathematical Offering":
> http://www.maths.abdn.ac.uk/~bensondj/html/maths-music.html
> 
> Then there's Electronotes, another useful site:
> http://electronotes.netfirms.com/
> 
> Does anyone know where I can learn about designing physical
> waveguides?  Bose seems to make speaker cabinets using this
> information, but I haven't located it, yet.  I had found Julius
> Smith's excellent (I think it's excellent - but it's mostly over my
> head!) site while looking for the subject, but could only find digital
> waveguide info, there.
> 
> - synergeezer
> 
> --- In CZsynth@yahoogroups.com, "ezra buchla" <ezra.buchla@...> wrote:
> > > >> > "linear piecewise phase distortions". I think! > > > Hm, to
> you, too. Could you give me a reference for your specific > > term?
> I'm eager to learn! > > nothing fancy, just means a function that's
> made out of line segments > (in this case a transfer function for
> distorting the phase) >
> http://en.wikipedia.org/wiki/Piecewise_linear_function > > this is how
> the cz produces the initial waveforms (system iii in the > patent).
> then there's an FM stage implemented as a hard reset of the > phase
> ("higher harmonics control signal generator", or system iv in > the
> patent), with a rather clever smoothing algorithm (just multiplies >
> by a decreasing ramp at the modulation frequency! sweet.) > > anyway,
> since 1983 people have come up with many additional > interesting
> phaser distortion functions, ellipses and cycloids being >
> particularly friendly. i find that sticking with various chopped up >
> linear functions, and wavetables with pretty simple harmonic content >
> (1st through 5th order or so), still gives more than adequately rich >
> timbral results. > > > Karplus-Strong algorithm, > now there's quite
> another beastie altogether. > >
> http://music.calarts.edu/~ebuchla/karplus_strong_patent.pdf > > that's
> KS's original idea for a digitar based on the excitation of a >
> virtual string by random noise bursts. i made some programs a while >
> ago (following the lead of folks like david jaffe at stanford), using
> > a KS-like model of masses connected by springs, but introducing more
> > complexity by using nonlinear terms in the force equations for the >
> springs, and doing crazy stuff like connecting them all in a ring >
> instead of a bridge-termination, and making arbitrarily weighted >
> connections between non-adjacent masses (ending up with something more
> > like a "spherical membrane" than a string, or anything else in the >
> real world...)... also using these things as chaotic resonantors by >
> using audio input for excitation rather than saws, impulses, or random
> > number bursts... > > then lo and behold, recent releases of ableton
> live include a rather > sophisticated stringlike physical modelling
> synth (called... > "tensor"?), complete with nonilnearity, different
> excitation > functions, variable damping, all kindsa stuff. neat! > >
> in general this kind of thing is lumped together under the umbrella of
> > waveguide synthesis. jaffe and julius smith at stanford have written
> > quite a lot about it. > > smith maintains his extensive collection
> of papers for free on his website. > http://ccrma.stanford.edu/~jos/ >
> > perry cook at princeton has a nice book about synthesis inspired by
> > physical models. it's useful without being overly math-y. "real
> sound > synthesis for interactive applications." > > places to find
> patents on the intertubes: > > patentstorm.us (gives you the text, pay
> for the figures) > pat2pdf.org (free pdf conversion if you know the
> patent number already) > > ok > > /eb >
> 
> 
> 
> ------------------------------------
> 
> Yahoo! Groups Links
> 
> 
> 
> 


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