[sdiy] Better waveforms of our nature

[Ove Ridé]

He meant a sawtooth one octave up.

On 17 October 2016 at 19:13, David Moylan <dave at westphila.net> wrote:
> Not quite.  A sine wave only represents one harmonic/overtone.  So if you
> add one an octave up you're just adding that single harmonic, no other even
> harmonics.  You can build it up with multiple sines (if you have extra
> oscillators) a la additive synthesis, but in the analog domain they wouldn't
> be precisely in tune.  They can also be formulated via waveshaping rather
> then separate oscillators.
>
> For instance, you can rectify a triangle to get a double (or more) frequency
> triangle, then sine shape etc.  I think Buchla did this in a module.
>
> On 10/17/2016 08:02 PM, mskala at ansuz.sooke.bc.ca wrote:
>>
>> On Sun, 16 Oct 2016, Donald Tillman wrote:
>>>
>>> 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.
>>
>>
>> It seems to me that "even harmonics" is really just all harmonics of a
>> note one octave higher - so except for minor differences in the shape of
>> the amplitude drop-off, all of these can be done easily by adding a sine
>> wave to a traditional oscillator at twice the frequency.  Can we think of
>> a different kind of waveform that breaks further from the traditional
>> ones?  Maybe an irregular pattern of harmonics, such as all prime-numbered
>> harmonics, would be interesting.
>>
>
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-- 
/Ove

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