[sdiy] Better waveforms of our nature

[Richie Burnett]

Interesting stuff!  I've always wondered why no synths seem to offer the 
parabolic (x-squared) waveform along with the regular saw, pulse and tri 
options.  Obviously a squaring circuit (analogue multiplier) would be extra 
cost if implemented in analogue electronics, but it's a single instruction 
in the modern digital world.

As other's have stated the even harmonic waveforms, are not true 
mathematically even functions because they still contain the fundamental. 
But without this component they would just be parabola and saw waves at 
twice the frequency (one octave up,) so not very musically interesting.

Didn't you do some work where you only kept the fundamental and harmonics at 
various stride sizes?  For instance (1, 4, 7, 10, 13, 16)  What did these 
sound like?  This is kind of like the opposite to PWM.  Whereas PWM 
effectively comb filters out harmonics at some regular spacing, you would 
instead be tossing away all of the harmonics *except* those at some regular 
spacing.

Static waves with interesting harmonic structures sound ideally suited to 
wavetable synthesis to me!

-Richie,





-----Original Message----- 
From: Donald Tillman
Sent: Sunday, October 16, 2016 10:26 PM
To: synthdiy diy
Subject: [sdiy] Better waveforms of our nature

Hey folks,

For those who follow my articles, here's a new one you might enjoy:

    A Palette of Static Audio Waveforms
    http://till.com/articles/wavepalette/

It includes a demo.

I got bored with the traditional set of audio VCO waveforms.  And instead of 
just throwing more waveforms at the situation, I looked into the larger 
issue of what we want from a waveform and the ways use them.  And things got 
interesting.

I've built a few VCOs with this waveform set over the last couple years, and 
I've been doing demos at local synth meetups.

In practice, working with a set of timbres like this is a refreshing change 
from the usual cliche sounds.

  -- Don

--
Don Tillman
Palo Alto, California
don at till.com
http://www.till.com

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