[sdiy] Understanding Analog Computer Schematics?

[Antti Huovilainen]

On Wed, 25 Feb 2009, David G. Dixon wrote:

> The "sinoid" made from multiplying two triangle waves 90 degrees out of
> phase has twice the frequency and an amplitude which is 1/8 of the square of
> the amplitude of the triangles.  It is visually very close to a sine.  I'm
> now curious about how this would stack up against the more normal sine
> shaper output.

It's equivalent to integrated triangle wave, so 3rd harmonic is down at
-29dB and 5th at -41dB. The difference to real sine will be audible.

Antti

"No boom today. Boom tomorrow. There's always a boom tomorrow"
   -- Lt. Cmdr. Ivanova