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NTO question

2002-09-05 by cg_synth

Here's one for people with later version VCOs - What are the waveforms
that the NTO variable option generates? Does it simply merge between
the standard wave forms such as saw to sine, sine to pulse, pulse to
square, or does it do something really unique like some form of wave
multiplication? The catalogs are rather vague on this.

Thanks,

Ken (who's VCOs are all original release).

Re: NTO question

2002-09-05 by John Papiewski

Ken,

The NTO variable waveform control pot graphic tells all. Gradual
transformation clockwise from saw to sine to pulse to oversquare pulse.
What waveforms do your oscillators put out? Do they have 1v/oct calibration
or no?

Best

John P.

cg_synth wrote:

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> Here's one for people with later version VCOs - What are the waveforms
> that the NTO variable option generates? Does it simply merge between
> the standard wave forms such as saw to sine, sine to pulse, pulse to
> square, or does it do something really unique like some form of wave
> multiplication? The catalogs are rather vague on this.
>
> Thanks,
>
> Ken (who's VCOs are all original release).

Re: NTO question

2002-09-05 by DarkStr717@aol.com

In a message dated 9/5/02 2:17:26 AM, sasami@... writes:

<< Here's one for people with later version VCOs - What are the waveforms
that the NTO variable option generates? Does it simply merge between
the standard wave forms such as saw to sine, sine to pulse, pulse to
square, or does it do something really unique like some form of wave
multiplication? The catalogs are rather vague on this >>

I think the catalogs are pretty clear on this, but to answer, it's a voltage
sweepable waveform selector ...kinda... The wave mulitplication is a
differenct modual.
It's a great tone shifter.. gives those thick pads a nice evolving effect.
But you knew that right??
Kind regards
John DuVal

Re: NTO question

2002-09-05 by sasami@hotkey.net.au

John P. wrote:

>The NTO variable waveform control pot graphic tells all. Gradual
>transformation clockwise from saw to sine to pulse to oversquare pulse.
>What waveforms do your oscillators put out? Do they have 1v/oct calibration
>or no?

They put out triangle, and a triangle to sine variable, from the internal
waveshaper. The do not have 1v/oct. They can be "convinced" to to give 2V
per oct across about 1.5 to 2 octaves, but that's it. It isn't surprising
they were soon replaced in the serge line-up.

Ken
_______________________________________________________________________
Ken Stone sasami@...
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>

Re: NTO question

2002-09-05 by sasami@hotkey.net.au

John DuVal wrote:

>I think the catalogs are pretty clear on this, but to answer, it's a voltage
>sweepable waveform selector ...kinda... The wave mulitplication is a
>differenct modual.
> It's a great tone shifter.. gives those thick pads a nice evolving effect.
>But you knew that right??

I kinda figured this, but since the catalog does go on about "waveforms not
available on any other synth" from the NTO, it implied soemthing more. What
this means is the NTO basically contains what Jurgen Haible calls an
interpolating scanner.

Thanks,

Ken
_______________________________________________________________________
Ken Stone sasami@...
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>

Re: NTO question

2002-09-05 by M. Blake Wilson

sasami@... wrote:

John P. wrote:

>The NTO variable waveform control pot graphic tells all. Gradual
>transformation clockwise from saw to sine
i'm fairly sure this is not a "true" sine and recall comparing the serge and modcan sines during a "shootout" last year...now where's that quote.....ah, here it is: the 'scope revealed that the Serge sinus had minute
dips and pits at the extremes of the waveforms, and these were evident
in the Event bas 20/20s we were using. . can anyone else try this? i seem to rex saying that the only true sine in the system was in the quad oscillator.

b.

Re: NTO question

2002-09-05 by DarkStr717@aol.com

In a message dated 9/5/02 3:45:29 PM, sasami@... writes:

<< NTO basically contains what Jurgen Haible calls an
interpolating scanner. >>

I use it on my brain on regular basis LMAO!!
John D

Re: NTO question

2002-09-05 by DarkStr717@aol.com

In a message dated 9/5/02 4:39:31 PM, mbwlaw@... writes:

<< i
seem to rex saying that the only true sine in the system was in the quad
oscillator. >>

I also remember Rex telling me that a number of years ago when i started
getting into alot of cross fading and he recomended the QUO because it had a
"pure" sine.
John D

Re: NTO question

2002-09-10 by John Loffink

This was a good question. I finally had a chance to hook up my NTO to an
oscilloscope to resolve it. This is not a mixer or interpolating
scanner. It does some sort of wave transformation as Ken had originally
questioned. None of the waveforms are accurate, saw, sine, narrow pulse
or square, in terms of pure synthesizer waveforms. The sawtooth is
concave in shape. The pulse and square have some rounded edges. When
changing from sine to narrow pulse, a simple mixer would show stair
stepping as more pulse was added. In the NTO the sine wave transforms
into a trapezoidal waveform and then into a semi-pulse. From pulse to
square the symmetry changes from 90/10 to 40/60. So definitely some
sort of wave multiplication is occurring in the NTO.

John Loffink
jloffink@...

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> -----Original Message-----
> From: sasami@... [mailto:sasami@...]
> Sent: Thursday, September 05, 2002 5:46 PM
> To: SergeModular@yahoogroups.com
> Subject: [SergeModular] Re: NTO question
>
> John DuVal wrote:
>
> >I think the catalogs are pretty clear on this, but to answer, it's a
> voltage
> >sweepable waveform selector ...kinda... The wave mulitplication is a
> >differenct modual.
> > It's a great tone shifter.. gives those thick pads a nice evolving
> effect.
> >But you knew that right??
>
> I kinda figured this, but since the catalog does go on about

"waveforms

> not
> available on any other synth" from the NTO, it implied soemthing more.
> What
> this means is the NTO basically contains what Jurgen Haible calls an
> interpolating scanner.
>
> Thanks,
>
> Ken
>

_______________________________________________________________________

> Ken Stone sasami@...
> Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
> Australian Miniature Horses & Ponies

<http://www.blaze.net.au/~sasami/>

>