[sdiy] Better waveforms of our nature

[David Moylan]

On 10/17/2016 09:32 PM, David Moylan wrote:
snip...

> approaching 75% of amplitude as n increases.
>
>   n2  | 4n^2 - 1
> 1 1     1
> 2 4     5
> 3 9     11.6
> 4 16    21
> 5 25    33
> 6 36    47
> 7 49    65
> 8 64    85
>
> I still think it would be fun to experiment with given its simplicity.
> Come to think of it, since the difference in harmonic amplitudes is only
> in the range of 75-80%, you could just mix a bit more of the FWR wave to
> compensate and have a fairly small error.
>
Oops, forgot about the n=1 term, so just boosting the amplitude wouldn't 
work as I described when mixing the x2 FWR sine and fundamental sine, 
but if you like extra second harmonic you're in luck!

> Dave
>
> On 10/17/2016 08:25 PM, mskala at ansuz.sooke.bc.ca wrote:
>> On Mon, 17 Oct 2016, David Moylan 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
>>
>> I said "adding a sine wave to a traditional oscillator at twice the
>> frequency" and meant that the traditional oscillator would be something
>> like a sawtooth - so the sine wave provides the fundamental and the
>> sawtooth at twice the fundamental frequency provides all even harmonics.
>>
>
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