[sdiy] Some Synergy info, was Re: Synclavier

Tom Wiltshire tom at electricdruid.net
Tue Mar 9 10:27:22 CET 2010


Veronica,

A very interesting post.

Some people might be able to get hold of the following paper, which  
covers the difference that phase makes to FM sound:

http://www.jstor.org/pss/3679958

Other people will have to do like I did, and call in a favour from  
someone at a university!

Regards,
Tom


On 9 Mar 2010, at 08:33, Veronica Merryfield wrote:

> Hal spoke at length on the spectra implications of adding phase  
> shifted sines for amplitude control over that of the use of the  
> multiplier, not just for the partials, but also when used as FM  
> operators. In those days, the PCB real estate to create a  
> multiplier was significantly larger than that for a phase shifted  
> adder as well. He also talked about the phase alignment of the sine  
> wave at note start. For fast rising envelope, this has a very  
> marked effect on the rate of rise of the leading edge of the first  
> wave and has a huge implication when used as a FM operator. I am  
> not sure if this is unique to the Synergy and doubt it is but will  
> say that a lot of control code is in place to ensure this is the  
> case which may imply it isn't always the case.




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