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RE: [Spam] Re:[Doepfer_a100] Re: Audio Samples: My VCO

2004-06-23 by David Salter

Florian,
 
My understanding (peter correct me if I'm wrong) is that any VCO design
uses a primary oscillator (core) whose output will be a waveform
(Triangle or sawtooth for example) and any other types of waveform are
constructed from this primary waveform using waveshaping circuits,
rectifiers etc.
 
It seems that whatever waveform you start with will impart a timbral
characteristic on the other waveforms.
 
This is quite odd when you think about it as a sine wave is a sine wave,
a waveshape that produces the fundamental with no harmonics.
 
However no waveshaper is perfect and that's why if you look at two sine
waves from different VCO's on a scope (with enough resolution) they are
never perfect just close. It's the imperfections that alter the sound
characteristic.
 
Regards
 
David
 
 

David Salter 
Reuters Ltd 
UKI Project Management 
Tel. +44 207 542 2402 
Fax. +44 207 542 2699 
Email. david.salter@reuters.com 
Reuters Messaging. david.salter.reuters.com@reuters.net 

	-----Original Message-----
	From: Florian Anwander [mailto:Florian.Anwander@consol.de] 
	Sent: 23 June 2004 13:18
	To: Doepfer_a100@yahoogroups.com
	Subject: [Spam] Re:[Doepfer_a100] Re: Audio Samples: My VCO
	
	
	Hi David and Peter
	
	> I never realised how much of a difference a tri core makes
over a saw
	> core. 
	Sorry for my lacks of english, but what does "core" mean in this
case??? 
	The basic waveform the bare VCO is producing (as the Curtis
CEM3340 does 
	triangle, the moogish  VCOs like the A110 does saw)?
	
	
	Florian
	
	
	
	
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