[sdiy] Screwing with Square Waves

[Donald Tillman]

On Oct 31, 2013, at 2:04 PM, Ingo Debus <igg.debus at t-online.de> wrote:

> Am 31.10.2013 um 19:02 schrieb Donald Tillman:
> 
>>   Square Wave Variations
>>   http://www.till.com/articles/squares/index.html
> 
> I enjoyed it indeed! Conclusions? The oscilloscope doesn't tell the whole story. Some waves might look very different but sound same, while other waves look very similar and sound different.

Exactly.  And to a much greater degree than one would expect.


> How about sound examples? Ok, these waves would all sound the same anyway, but many people would not believe that until they heard it.

They really would sound very much the same.  Any differences would be due to quirks and inaccuracies in how they are generated, how they are processed, how they are reproduced, and only then, the listener.

Of course it's entirely possible that some of these may set off mp3 encoding in a bad way.  :-)


> However, I can't resist and do a little nitpicking. You write: "(omega) is the frequency in Radians". Omega is the angular velocity (the frequency times 2*pi), and is measured in Radians per second.

Ah, good catch.  Thanks; I'll fix that.

  -- Don

--
Don Tillman
Palo Alto, California
don at till.com
http://www.till.com