## multi osc with m sync and s sync

Device/Module Wishlist

Original topic on PlanetZ: https://forums.scopeusers.com/viewtopic.php?t=26292

#### multi osc with m sync and s sync

Posted: Fri Oct 31, 2008 12:48 am
by widy
is it possibel to built such a osc for mod
with master sync input and slave sync output
i tried to build a sid synth in mod
sid osc's like:
osc1->osc2->osc3->*osc1
-> hard sync option
->* hard sync with a sync freedback dealy if possible
i tried soft synth .. but its not the same
and i tied gate to sync but this is also not realy hard sync, because i can only retrigger osc's by gate signals and not on a new period of the master osc => pitch mod of master osc has no effect on slave osc's
by the way ... for funy old c64 sounds trie
trie osc1->osc2->osc3->osc1 with soft sync
and mod the osc3 frequence by a env to pitch it up or down ....
and osc1 rm osc2 , osc2 rm osc3 and osc3 rm osc1
rm..ringmodulation
lg widy

#### Re: multi osc with m sync and s sync

Posted: Tue Nov 18, 2008 9:23 am
by widy
is no one interessted on synced osc's and build up a chain with synced osc's
but by the way i found out something
the sync signal is only a ramp ( startes from -1 up to 1 ) ( see pic )
and its also possibel to mainpulate this signal
sync Master out -> ring mod I1
sync Master out -> bipolar to unipolar -> ring mod I2
ring mod Out -> Sync Slave ( see pic red ) )
i also tied a curve table to change the sync signal ( but remember curve signal output is 0-1 and not -1 to 1 => also use a mixer to add -0,5 and multiply the result with 2 ( Gain 12 DB )
=> clean OSC sound if sync singal is linear - totaly dameged sounds if sync signal is non linare and/or with an offset ...)
however ...i never tried to change sync signals, buts possibe
cheers widy
pic)
1)sin osc
2)sync signal

Attachments
    1.jpg (10.31 KiB) Viewed 2112 times

#### Re: multi osc with m sync and s sync

Posted: Tue Nov 18, 2008 10:39 am
by Neutron
try mixing a sin with its own sync and then using that as the sync for something else. then you can use the mix to control the shape of the output. (which could easilly be modulated with mixmodulator.

#### Re: multi osc with m sync and s sync

Posted: Wed Nov 19, 2008 2:29 am
by widy
thx for the tip .. i will try this at home
cherrs widy

#### Re: multi osc with m sync and s sync

Posted: Wed Nov 19, 2008 4:51 am
by tgstgs
A.G.Bel would say check your multiplication
*2 is about 6dB
algo:
20*log(p/p0)
good vibes

#### Re: multi osc with m sync and s sync

Posted: Wed Nov 19, 2008 8:32 am
by widy
yep i know the different of 6db and 12db ....
however ...
a multi osc with a hard sync input and output would be fine
cheers widy