[sdiy] A different approach to frequency shifting?

[patchell]

    This methode is outlined in Electronotes....(I think I am already getting tired of hearing myself say that, but, it is unbelievable just what is in that collection)...I will see if I can locate the article again and post the page number and issue....

    I fear I am going to have to start my own index of what I find in these things or it is going to drive me crazy...


Thomas Hudson wrote:

> I came across an article in CSound Magazine from Summer 2000 about an approach to frequency shifting I hadn't seen before. It uses a quadrature oscillator and two multipliers followed by two LP filters and then another quadrature oscillator and pair of multipliers. The difference in frequency between the two oscillators determines the shift:
>
> http://www.csounds.com/ezine/summer2000/processing/index.html
>
> It seems that this method would be simplest for thru-zero effects. The article is in the context of a digital implementation, but has anyone used this technique in the analog world?
>
> TH

--
 -Jim
------------------------------------------------
* Visit:http://www.silcom.com/~patchell/
*-----------------------------------------------