Talk:Phase distortion synthesis
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As I recall the output of my CZ-1000 on a scope back in 1989, the CZ synths actually generated real sawtooth waves, so I'm deleting the next comment until I can sample a pure saw from the CZ and see it in Audacity:
on the CZ synths, the waveform is a rather sine wave shaped saw wave approximation.
Samboy 13:14, 17 Dec 2004 (UTC)
Images[edit]
This article would be much better if there were images of the waveforms instead of cheesy ASCII art. Kelly Martin 02:19, May 12, 2005 (UTC)
Tuning Problems?[edit]
The article says that the oscillator may go out of tune if (yadda yadda ...)
This can't be right. If the DC offset is non-zero, it will go out of phase, not out out of tune, right?
Also the guesswork regarding two oscillators in sync, is the same as saying it has only one oscillator, but with two lookup tables (one sine wawe as carrier, and another for distorting/modulating the phase of the carrier)
And while I'm at it; excactly what means "a period of a level of a basic sine"?
mvh // Jens M Andreasen
The Patent[edit]
... is here: Ishibashi; Masanori, Oct 17, 1985, and a brief description can be found as a reference in a later patent here: Kaneko; Yoji, jan 5, 1989
The patent includes a boatload of pretty pictures showing wawes and frequency responses as well as instructions on how to engrave this thing in VLSI silcon.
I have now from the information in the patent, rewritten most of the article as well as expanded it somewhat.
Thanks to Simon Jenkins for the gnuplots.
mvh // Jens M Andreasen
Image deleted[edit]
Somebody deleted the image of the saw wawe transform for no good reason. To me this is proof of the inherent instability and failure of Wikipedia. Neither me nor Simon Jenkins wanted to take credit for being able to push buttons on a program plotting out depictions of functions. Oh well ... If you want your facts straight, don't look here. MX44 18:12, 21 May 2006 (UTC)
Images deleted ... again (sigh!) This time around the mirrors on the 'net were all leeching on wikimedias bandwidth, so I can't restore them as easily as last time. MX44 (talk) 17:36, 7 December 2008 (UTC)
Simulating a resonant filter[edit]
This part refers to the CZ synths using a hard sync trick to resemble a resonant filter. If I'm not mistaking then this has nothing to do with phase distortion synthesis. Shouldn't it be moved to the oscillator sync article? --213.176.148.218 15:26, 16 February 2007 (UTC)
- Right, but phase distortion synthesis is so hardwired to the CZ series so I believe it really ought to stay around here. MX44 17:29, 20 February 2007 (UTC)
Context[edit]
This article needs more context, and more background information. For the first two paragraphs, I thought it was talking about DNA synthesis.