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 Forum index » Clavia Nord Modular » G2 Patches - Experimental
WAVE TABLE
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ian-s



Joined: Apr 01, 2004
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PostPosted: Thu Apr 12, 2007 10:47 pm    Post subject: WAVE TABLE
Subject description: from the AVR-X
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Had a look at the excellent AVR-X project, seems like a great synthesizer (dual wave table with analog vcfs and vca). I put a wav header on the bin files to have a look at the waveforms and they sound very nice.
I think at least one was done on a Nord modular because I can recognize the distinctive spectral oscillator shape.

Anyway, wave15 looked and sounded interesting so I duplicated it in this patch, along with a S&H trick to ensure waves change only on zero crossings.

Just a basic patch with three variations.


wav15.pch2
 Description:
wave table duplicated from wave15 on a AVR-X

Download
 Filename:  wav15.pch2
 Filesize:  3.42 KB
 Downloaded:  1465 Time(s)

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cappy2112



Joined: Dec 24, 2004
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PostPosted: Fri Apr 13, 2007 10:27 am    Post subject: Re: WAVE TABLE
Subject description: from the AVR-X
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g2ian wrote:

I think at least one was done on a Nord modular because I can recognize the distinctive spectral oscillator shape.



(Take that, Clavia) Smile

I wish I could talk with the developers to find out just what made them decide to drop this module or that module in the G2.

Not having a DSP-related background I can only guess. But I would expect that the choice of DSP hardware wasn't the issue, but that more of a manpower/time issue.
I could be way wrong though.
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elektro80
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PostPosted: Fri Apr 13, 2007 10:38 am    Post subject: Reply with quote  Mark this post and the followings unread

Dr. Justice is one major DSP monster! Very Happy
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ian-s



Joined: Apr 01, 2004
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PostPosted: Fri Apr 13, 2007 10:53 am    Post subject: Re: WAVE TABLE
Subject description: from the AVR-X
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cappy2112 wrote:
(Take that, Clavia) Smile


Embarassed What I meant to say was it looks like the spectral oscillator, or sine3 on the G2 shape oscillators.
The sample does sound different to the G2 though. The data is 8 bit with only 256 samples per cycle, but it sounds very 'good'.


Bank8.GIF
 Description:
 Filesize:  8.2 KB
 Viewed:  8077 Time(s)

Bank8.GIF


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cappy2112



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PostPosted: Sun Apr 15, 2007 5:26 pm    Post subject: Re: WAVE TABLE
Subject description: from the AVR-X
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g2ian wrote:
cappy2112 wrote:
(Take that, Clavia) Smile


Embarassed What I meant to say was it looks like the spectral oscillator, or sine3 on the G2 shape oscillators.
The sample does sound different to the G2 though. The data is 8 bit with only 256 samples per cycle, but it sounds very 'good'.


What did you use to make the image of the signal?
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ian-s



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PostPosted: Sun Apr 15, 2007 6:03 pm    Post subject: Re: WAVE TABLE
Subject description: from the AVR-X
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cappy2112 wrote:
What did you use to make the image of the signal?


I renamed the .bin files from the source distribution to .raw then added a 44100 8bit wav header using sox.

I could then load them into audacity to see and listen. The screen shot is just an audacity window.

I am thinking now it might be generated by an algorithm because the zero crossings line up on each cycle, which is not the case with the G2 shape sine3.
Alternatively, they might have doctored each of the 16 cycles to shift the zero crossing, which would add a little phase modulation.
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Fozzie



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PostPosted: Mon Apr 16, 2007 1:13 pm    Post subject: Reply with quote  Mark this post and the followings unread

Nice patch! Also very nice to feed some oscillator signal into the s/h input Smile
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Falk



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PostPosted: Wed Apr 25, 2007 8:38 am    Post subject: 2 other ways to skin the cat Reply with quote  Mark this post and the followings unread

Because the S/H is done at control signal time resolution you can still get small pops when the SeqCtr changes. Below are two ways to fix that. Both uses slightly more CPU though.

1'st version uses 5 S/H to make sure that the amplitude is changed only at the start of a waveform cycle.

2nd version uses glide modules to to change the amplitude gradually enough that no pops occur. By using different glide times for each harmony you can get some additional variation in the sound.

Really nice patch.


wav15_150_v1.pch2
 Description:
1'st version with S/H

Download
 Filename:  wav15_150_v1.pch2
 Filesize:  3.45 KB
 Downloaded:  1083 Time(s)


wav15_150_v2.pch2
 Description:
2:nd version with glide module

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 Filename:  wav15_150_v2.pch2
 Filesize:  3.61 KB
 Downloaded:  1094 Time(s)

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Blue Hell
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PostPosted: Wed Apr 25, 2007 3:48 pm    Post subject: Re: 2 other ways to skin the cat Reply with quote  Mark this post and the followings unread

Falk wrote:
By using different glide times for each harmony you can get some additional variation in the sound.


Indeed, I like that !

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ian-s



Joined: Apr 01, 2004
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PostPosted: Wed Apr 25, 2007 4:06 pm    Post subject: Reply with quote  Mark this post and the followings unread

nice tweaks Very Happy
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