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 Forum index » Clavia Nord Modular » G2 Building Blocks
DIY square hardsync oscillator
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Tim Kleinert



Joined: Mar 12, 2004
Posts: 1140
Location: Zürich, Switzerland
Audio files: 7
G2 patch files: 236

PostPosted: Tue May 12, 2009 4:45 am    Post subject: DIY square hardsync oscillator
Subject description: producing hardsync sounds without artefacts
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Visit this thread for more info:

http://electro-music.com/forum/topic-34204.html


Controls: (Page A1)
MASTER OSC Coarse, Fine, Pitch M: master osc settings
SLAVE Tune: slaved osc pitch sweeping (for that sync sound)
WAVEFORM Brill: controls overall brilliance of the waveform
HI-FREQ ATT Breakpoint, R.Gain: sets breakpoint and amount of brilliance attenuation for high frequencies, to circumvent aliasing. Only use negative values (obviously Laughing).

8.8% cycles, 11.7% memory. Not bad.

EDIT: True hardsync retains more of the fundamental. To get this, just switch the filter from bandpass to lowpass.


DIYSqrSyncOsc2TK.pch2
 Description:
Produces sync-like sounds, without the sonically compromised osc-sync approach. Improved version with added anti-aliasing control.

Download
 Filename:  DIYSqrSyncOsc2TK.pch2
 Filesize:  2.02 KB
 Downloaded:  789 Time(s)

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iPassenger



Joined: Jan 27, 2007
Posts: 1051
Location: Sheffield, UK
Audio files: 5
G2 patch files: 78

PostPosted: Wed May 13, 2009 2:23 am    Post subject: Reply with quote  Mark this post and the followings unread

Tried this out before work this morning and liked it a lot.
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Tim Kleinert



Joined: Mar 12, 2004
Posts: 1140
Location: Zürich, Switzerland
Audio files: 7
G2 patch files: 236

PostPosted: Wed May 13, 2009 5:33 am    Post subject: Reply with quote  Mark this post and the followings unread

iPassenger wrote:
Tried this out before work this morning and liked it a lot.

Thanks. Smile

It probably doesn't seem all that spectacular to folks here, but for me this is a real biggie. I need good hardsync-like sounds for my lead patches, and not having those was one of the reasons I started looking around for another modular platform.
I checked this circuit on a scope today and it really looks like hardsync too. And having anti-aliasing control means that I can tweak things if I encounter artefacts nevertheless. But it definetely sounds way better than the "regular" approach. And the extra DSP usage is no big deal for me as I'll use this for monophonic leads anyway.

This has made me fall in love with the G2 all over again, and reinforced my hope that ultimately there is always a solution if you think hard enough.

The pulse-to-sawtooth shaper (using a building block I designed some time back) however doesn't work well enough. Produces too much aliasing. So a sawtooth version of this technique isn't possible unfortunately. Or maybe... who knows? Wink

Next project is trying to pep up the reverb module. Also, I'll give a shot at Roland D50-like "spectrum" waveforms, to get some more "sampling"-like timbres and thus move away from the more common VA- or FM-type sounds.

cheers,
tim
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iPassenger



Joined: Jan 27, 2007
Posts: 1051
Location: Sheffield, UK
Audio files: 5
G2 patch files: 78

PostPosted: Wed May 13, 2009 6:57 am    Post subject: Reply with quote  Mark this post and the followings unread

A shame about the Saw one not working. TBH the poor sync was a big let down for me when i first got the G2.. Having always quite liked the wailing screeching sounds my pulse can come up with when sync'd.
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xav



Joined: Mar 21, 2005
Posts: 155
Location: paris
Audio files: 8
G2 patch files: 7

PostPosted: Sun May 17, 2009 12:16 pm    Post subject: Reply with quote  Mark this post and the followings unread

Waw Tim! That's a new startpoint for my sync patches too. I love that sounds, more usable and musical than the classic way, even if there are minus high frequencies (even at brillance set at its maximum level). Great job
Great news for us too, to see you still implicated in sound design with the G2.
All the best
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dorremifasol



Joined: Sep 28, 2006
Posts: 802
Location: Barcelona, Spain
Audio files: 7
G2 patch files: 49

PostPosted: Sun May 17, 2009 2:32 pm    Post subject: Reply with quote  Mark this post and the followings unread

Wow, this one sounds great, juicy!

Tim, it's good to see you inspired again Very Happy

It's good for all of us, you always come with interesting new techniques.

Thank you!

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Albert
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Tim Kleinert



Joined: Mar 12, 2004
Posts: 1140
Location: Zürich, Switzerland
Audio files: 7
G2 patch files: 236

PostPosted: Sun May 17, 2009 4:45 pm    Post subject: Reply with quote  Mark this post and the followings unread

xav wrote:
Waw Tim! That's a new startpoint for my sync patches too. I love that sounds, more usable and musical than the classic way, even if there are minus high frequencies (even at brillance set at its maximum level). Great job
Great news for us too, to see you still implicated in sound design with the G2.
All the best

Yes, it sounds a bit duller than normal hardsync. That's the price you pay for it being far less prone to aliasing artefacts. Those were so bad that I was always reluctant to use normal sync sounds from the G2 in a recording situation. This is really usable and does the trick well enough for me.

Yes, I'm sticking to the G2 after all, for the time being. I checked out various alternatives over a longer period of time, and they all fell short, for one reason or another. The G2 still seems to be the perfect fit. That's why I am trying to exorcise deficiencies as good as I can. Hence this hardsync technique.

cheers Smile
tim
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