[sdiy] Fwd: FM math question

[Ian Fritz]

At 06:31 PM 10/15/2008, Gerald Stevens wrote:
>I'm glad that you're thinking about these details Ian.  It's my 
>understanding that a thru zero FM oscillator is desirable because it can 
>produce the same harmonic series as the digital algorithm in a DX operator.

Sorry, but I have to stop you right there.   :-)

It's desirable because of the many fantastic sounds it can make.  If you 
want a DX, then get a DX.


>  Now, since the DX7 only uses sin wave oscillators and modulators, I was 
> wondering whether or not your saw-tooth version negates the "benefits" of 
> thru-zero frequency modulation.

But this is what we were just talking about!  With a Sin shaper at the 
output it seems very similar to Sin wave FM.  Probably actually the 
same.  Have you listened to the demos?  Most folks so far like them.

   Ian