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Re: [emlsynth] Re: converting 1.2 volt/octave to 1 volt/octave

2011-07-19 by Nick Zampiello

The 200 and 101 oscillators are a non-standard 1.20v/oct 

hz/volt is more of a japan convention: korg, Yamaha, etc...

i can get mine to tune to other 1v/oct gear but its prone to drift as the 
controls are so course.

i was hoping to get a mod enacted with a fine tune VR so one of the swing inputs 
was always 1v/oct and could be calibrated as things settle and drift...

PS:

from WIKI:

http://en.wikipedia.org/wiki/CV/Gate#CV

CV 
While the concept of CV (Control Voltage) was fairly standard  on analog synths, 
the implementation was not. For pitch control via CV,  there are two prominent 
implementations:
	* Volts per octave. This standard was popularized by (if not created by) Bob 
Moog in the 1960s;  it was widely adopted for control interfacing.One volt 
represents one  octave, so the pitch produced by a voltage of 3 V would be one 
octave  lower than that produced by a voltage of 4 V. Notable followers of this  
standard include Roland, Moog, Sequential Circuits, Oberheim and ARP.
	* Hertz per volt. This method (used by most but not all Korg and Yamaha synths) 
represented an octave of pitch by doubling voltage, so the  pitch represented by 
2 V would be one octave lower than that represented  by 4 V, and one higher than 
that represented by 1 V.
The following example table demonstrates some notes and their  corresponding 
voltage levels in both implementations (this example uses 1  V/octave and 
55 Hz/V):
z


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________________________________
From: Prosper Prodaniuk <prosperp@...>
To: emlsynth@yahoogroups.com
Sent: Tue, July 19, 2011 2:54:33 PM
Subject: [emlsynth] Re: converting 1.2 volt/octave to 1 volt/octave

  
Maybe in this someone can answer whether or not the 200 (and 100) are HZ/V as 
opposed to V/OCT and then they went with the V/OCT convention for the 101 and 
beyond. Have heard this on more than a few occasions. Also does anyone have the 
user and/or service manual for the 100? I'm looking to integrate it more into my 
system but don't want to blow anything up.

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