[sdiy] simple saw or sine osc?

[Jerry Gray-Eskue]

Got It!
<<2 midi note-on messages, do the a+b, a-b trip,
and output 2 new midi-on messages.>>

Same trick but use two 1V/O control voltages and the total and difference
routed to 4 VCOs..

- Jerry

-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl
[mailto:synth-diy-bounces at dropmix.xs4all.nl]On Behalf Of Jerry
Gray-Eskue
Sent: Tuesday, September 08, 2009 6:49 AM
To: synth-diy at dropmix.xs4all.nl
Subject: FW: [sdiy] simple saw or sine osc?




-----Original Message-----
From: Jerry Gray-Eskue [mailto:jerryge at cableone.net]
Sent: Tuesday, September 08, 2009 6:47 AM
To: Tim Ressel
Subject: RE: [sdiy] simple saw or sine osc?


That works since the notes already have the exponential relationship.

The draw back other than the hardware would be it lacks any way to deviate
from standard tuning to get a smooth frequency slope. There Might be a way
to use the Pitch Bend message to make this happen.

A neat idea that could yield some interesting effects.
I was thinking more of an analog equivalent to this scheme but the Midi
approach is useful in its own right and give a conceptual model of what
would need to happen to build an analog version.

- Jerry


-----Original Message-----
From: Tim Ressel [mailto:madhun2001 at yahoo.com]
Sent: Monday, September 07, 2009 11:35 PM
To: synth-diy at dropmix.xs4all.nl; Jerry Gray-Eskue
Subject: RE: [sdiy] simple saw or sine osc?


Interesting. One could pull that off with some specialized gear. The
quickest way would be to take 2 midi note-on messages, do the a+b, a-b trip,
and output 2 new midi-on messages.

What would that sound like? Would that be useful?

--TimR

--- On Mon, 9/7/09, Jerry Gray-Eskue <jerryge at cableone.net> wrote:

> From: Jerry Gray-Eskue <jerryge at cableone.net>
> Subject: RE: [sdiy] simple saw or sine osc?
> To: synth-diy at dropmix.xs4all.nl
> Date: Monday, September 7, 2009, 8:15 PM
> <<what IS the best waveform
> choice for ring mod/sideband modulation stuff?>>
>
> You know its a shame that these generate the linear sum and
> differences, it
> would be so much cooler if there was a way to get an
> exponential sum and
> difference so that the resulting frequencies would have a
> chance of being
> semitones....
>
> - Jerry
>
> -----Original Message-----
> From: synth-diy-bounces at dropmix.xs4all.nl
> [mailto:synth-diy-bounces at dropmix.xs4all.nl]On
> Behalf Of Dan Snazelle
> Sent: Monday, September 07, 2009 8:07 PM
> To: tim.parkhurst at gmail.com;
> synth-diy at dropmix.xs4all.nl
> Subject: RE: [sdiy] simple saw or sine osc?
>
>
>
> thanks
>
> i had forgotten about your  lfo post
>
> i had thought about the 40106 vco but in my tests i never
> got it to give a
> saw
>
> of course this begs the question..what IS the best waveform
> choice for ring
> mod/sideband modulation stuff?
>
> i have found that square and tri dont work too wel
>
>
>
>
>
> --------------------------------------------
> check out various dan music at:
>
>  http://www.myspace.com/lossnyc
>
> (updated monthly)
>
> http://www.soundclick.com/lossnyc.htm
>
>
>
> http://www.indie911.com/dan-snazelle
>
> (or for techno) http://www.myspace.com/snazelle
>
> ALSO check out Dan synth/Fx projects:
>
> AUDIO ARK:
>
> www.youtube.com/watch?v=TJRpvaOcUic
>
> www.youtube.com/watch?v=BqIa_lXQNTA&feature=channel_page
>
> www.youtube.com/watch?v=V4nJPjGgOcU&feature=channel_page
>
> and soundtrack/design work:
>
> NEW: check out Dan's sound design from the 1998 award
> winning film SAFARI by
> catherine chalmers
>
> http://www.catherinechalmers.com/videos.cfm
>
>
>
>
> > Date: Mon, 7 Sep 2009 17:53:12 -0700
> > Subject: Re: [sdiy] simple saw or sine osc?
> > From: tim.parkhurst at gmail.com
> > To: subjectivity at hotmail.com
> > CC: synth-diy at dropmix.xs4all.nl
> >
> > Hi Dan,
> >
> > You might check out my 8K LFO design, with the TSW
> wave shaper (both a
> > little more than half way down the page):
> > http://electro-music.com/forum/viewtopic.php?t=32372
> >
> > You could also try:
> > http://electro-music.com/forum/viewtopic.php?t=34940
> >
> > Or:
> > http://electro-music.com/forum/viewtopic.php?t=28799
> >
> > Hopefully one of these will do the trick!
> >
> >
> > Tim (does tricks, like Sit Up and Fetch) Servo
> > --
> > "Sire, the church of God is an anvil that has worn out
> many hammers."
> > - H.L. Hastings
> >
> >
> > On Mon, Sep 7, 2009 at 7:52 AM, Dan Snazelle wrote:
> >>
> >> hey there
> >>
> >> I need a one chip (maybe a tl072 or tl074 or 324)
> Sawtooth oscillator for
> a project I am building where
> >> I need a panel controllable Oscillator that can go
> into high enough
> frequencies to do nice FM/ring mod kind of stuff.
> >>
> >> It doesn't need to be voltage controllable
> although I wouldn't mind if it
> was.
> >>
> >> I think it needs to either be SINE or SAW because
> all the experiments I
> did with a TRI or SQR just arent getting me the right kind
> of
> >> "ring modulated/sidebands" sound I am after. 
> (which is too bad as I
> couldnt just a 40106
> >>
> >>
> >> thanks so much
> >>
> >>
> >>
>
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