[sdiy] Additive Synthesis questions

[Paul Perry]

I can't think of a single SIMPLE sine wave generator,
at least at audio frequencies. I suppose a phase shift oscillator
would be about the best, but not easily voltage controlled.
http://www.techlib.com/electronics/audiooscillators.htm
That use of an incandescent to stabilise a wein bridge has
a problem - at low frequencies it doesn't have enough inertia.

paul perry Melbourne Australia

----- Original Message ----- 
From: "Aaron Lanterman" <lanterma at ece.gatech.edu>
To: "synth diy" <synth-diy at dropmix.xs4all.nl>
Sent: Sunday, April 11, 2010 2:41 PM
Subject: Re: [sdiy] Additive Synthesis questions


>
> On Apr 10, 2010, at 10:27 PM, Joel B wrote:
>
>> ? Does a quartz crystal only make square waves? I'm wondering if there is 
>> any kind of cicuit that doesn't require wave shaping to generate a 
>> relatively pure sine... I mean all waveforms arease of sine waves right? 
>> So the sine wave must be the most common naturally occuring waveform, at 
>> least it would seem so...
>
> There are tons; it's just hard to create voltage-controlled versions of 
> most of them over a wide range, which is why the sawtooth and triangle 
> cores we know and love are generally used in musical VCOs.
>
> - Aaron
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