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 Forum index » Clavia Nord Modular » Nord Modular G2 Discussion
wavetable like sound with sequenced wavechanges
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Argosound



Joined: Mar 22, 2007
Posts: 15
Location: KA,Germland
G2 patch files: 1

PostPosted: Fri Aug 24, 2007 8:04 am    Post subject: wavetable like sound with sequenced wavechanges Reply with quote  Mark this post and the followings unread

hello everybody,

i'm new to this forum,but reading as a guest,since half a year.
i really like this place, but since i have no net connection at home i keep reading at work Embarassed wich is bad because i can not download patches(or upload to show my problem) an so have no idea about how far i am from really experienced patchers.

so my question, as mentioned above, might be through for you but anyway:
i want to change the waveform of, let's say shapeOscA, by connecting a value sequencer to a midi-cc-out module wich is controlling the wave form.

it works so far, but there is a loud krrk noise when changing waves.
this upsets me, since i want to create pad sounds.
has anybody an idea how to kill that noise?or is this solved by anyone else?
as i said i can not download patches...

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Blue Hell
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Joined: Apr 03, 2004
Posts: 23500
Location: The Netherlands, Enschede
Audio files: 262
G2 patch files: 320

PostPosted: Fri Aug 24, 2007 9:05 am    Post subject: Reply with quote  Mark this post and the followings unread

welcome Argosound,

when you want to change wave forms without clicks you should switch the wave form at such a time that the momentary amplitude of the wave you leave is the same as the momentary volume of the wave you jump to.

So probably the switching should occur only when the oscillator is at zero phase. I don't see how this could be accomplished using the MIDI switch over you are using.

As you are saying you want pad like sounds I assume you want a slow transition from one wave form to another, and this is something that can't be done by the wave form switch on the oscillator at all, it will do an instantaneous switch at some pretty arbitrary moment.

A solution could be to use multiple oscillators and a cross fading module like the cross fader or the multiplexer module. This will make the patch more expensive in measures of resource usage, but maybe the wave forms could be made by applying wave shaping techniques on the output of one oscillator.

G2ian made some examples as to how this could be done for various wave shape transformations. A sine to square is simply a comparator or a logic gate with some post scaling to make the signal bipolar again, but there are tricks as well to make saws, ramps, sines and whatnot from other wave shapes.

Maybe you could have look in the patch archive and when you see something you think is interesting you could post a request for people to upload a picture of the patch, assuming that you do have a printer at work (or pen and paper of course Very Happy ).

The archive is at : http://electro-music.com/g2patches.php

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Jan
also .. could someone please turn down the thermostat a bit.
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Argosound



Joined: Mar 22, 2007
Posts: 15
Location: KA,Germland
G2 patch files: 1

PostPosted: Mon Aug 27, 2007 11:00 am    Post subject: Reply with quote  Mark this post and the followings unread

thanks for your quick reply.

i thought about the mux thing but i wanted to have it cheaper...
so i tried to take a turned over adr envelope (triggered by the clocksignal wich is driving the seq driving the waveform) to insert silence in the moment of change.the silence is covered by the added delay.

i want quick changes to get a more hacked sound.

i got the idea while reading the german synthesizer-magazin where they said a radias could do this with its sequencer.

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Blue Hell
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PostPosted: Mon Aug 27, 2007 12:23 pm    Post subject: Reply with quote  Mark this post and the followings unread

Argosound wrote:
i want quick changes to get a more hacked sound.


Assumptions are dangerous Laughing Well at least wanting quick changes makes it somewhat cheaper to implement.

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also .. could someone please turn down the thermostat a bit.
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cappy2112



Joined: Dec 24, 2004
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Location: San Jose, California
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PostPosted: Wed Aug 29, 2007 10:29 am    Post subject: Re: wavetable like sound with sequenced wavechanges Reply with quote  Mark this post and the followings unread

Argosound wrote:
hello everybody,
i keep reading at work Embarassed


Hey- you're not alone. Wink

As far as downloading patches, perhaps you can download the entire archive at a local library, internet cafe, or a friend's machine, that way you'll have most of the patches.
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Argosound



Joined: Mar 22, 2007
Posts: 15
Location: KA,Germland
G2 patch files: 1

PostPosted: Sat Sep 08, 2007 2:52 pm    Post subject: made it Reply with quote  Mark this post and the followings unread

I'm at a friend and may add my patch, so maybe someone has a hint for me i now tried to zero the level by a 180° turned ADR env, striking each waveform change.it sounds nicer now but its still unsatisfiieng... Sad


Osc change PAD.pch2
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 Filename:  Osc change PAD.pch2
 Filesize:  3.11 KB
 Downloaded:  1101 Time(s)


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ian-s



Joined: Apr 01, 2004
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PostPosted: Sat Sep 08, 2007 5:00 pm    Post subject: Reply with quote  Mark this post and the followings unread

Here is an idea.

The LFOshp cross fades between the two waves and provides two phase clock for stepping the wave select sequencers. Adjust the shape control on the LFO for gradual or stepped transitions.


xfade.pch2
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 Filename:  xfade.pch2
 Filesize:  2.61 KB
 Downloaded:  1423 Time(s)

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Argosound



Joined: Mar 22, 2007
Posts: 15
Location: KA,Germland
G2 patch files: 1

PostPosted: Wed Sep 12, 2007 11:57 pm    Post subject: Reply with quote  Mark this post and the followings unread

hello ian
thanks for your reply patch.enjoyed it, but for me i wanted faster wavechanges Crying or Very sad ....
to be honest i didn't play around with it a lot, cause since sept10.i'm a pupil again.maybe with a bit more time i may tweak it as i want to

but the way you solved the problem was way out of anything i could think of...so even having my g2 for nearly a year now i still have a lot to learn!

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