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 Forum index » DIY Hardware and Software
Heavy metal with xors
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v-un-v
Janitor
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Joined: May 16, 2005
Posts: 8932
Location: Birmingham, England, UK
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G2 patch files: 1

PostPosted: Sun Aug 06, 2006 10:15 am    Post subject: Reply with quote  Mark this post and the followings unread

Uncle Krunkus wrote:
I got the schem for the Syntom as well. I'm really impressed with the look of this. I was thinking about re-inventing the DS7/8 but with two types of noise to mix together, and a SV filter this thing looks even more promising. Maybe I'll build one of each.


Absolutely Smile

In the early days e&mm's sister publication published a really cool rack mount modular fx unit too with all kinds of delay, filter and modulation goodies on board. I wish I still had those schematics. I saw one of these on ebay a while back. I think it only sold for £50 or so Shocked Crying or Very sad (I didn't have the money or space then).

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ALLES TURISTEN UND NONTEKNISCHEN LOOKENPEEPERS!
DAS KOMPUTERMASCHINE IST NICHT FÜR DER GEFINGERPOKEN UND MITTENGRABEN! ODERWISE IST EASY TO SCHNAPPEN DER SPRINGENWERK, BLOWENFUSEN UND POPPENCORKEN MIT SPITZENSPARKSEN.
IST NICHT FÜR GEWERKEN BEI DUMMKOPFEN. DER RUBBERNECKEN SIGHTSEEREN KEEPEN DAS COTTONPICKEN HÄNDER IN DAS POCKETS MUSS.
ZO RELAXEN UND WATSCHEN DER BLINKENLICHTEN.
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bugbrand



Joined: Nov 27, 2005
Posts: 842
Location: Bristol, UK
Audio files: 1
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PostPosted: Sun Aug 06, 2006 4:21 pm    Post subject: Reply with quote  Mark this post and the followings unread

Here's a link for 3 of the syn*** devices:
E-Music DIY Archive - Drums

-- the SynTom link gives a .zip file with Syntom, Synwave and Synchime.


But that Synbal is much better - mmm, the diginoise coupled with a VCFilter with resonance.

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vtl5c3



Joined: Sep 08, 2006
Posts: 423
Location: PDX
Audio files: 13

PostPosted: Mon Sep 11, 2006 3:18 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hi folks,

I know that this thread is kinda old, but since I'm new to the electro-music forum scene, I thought I'd post a follow-up to it.

If you're into abusing CMOS X-OR gates, I highly recommend Craig Anderton's Pulse Width Multiplier. It was published in Polyphony several decades ago, but I got Craig's approval to post the article on my site:

http://web.pdx.edu/~rfahl/img/capwm1.gif
http://web.pdx.edu/~rfahl/img/capwm2.gif

If found an old post of mine that describes it well:

-------------------------------------------------------------

I tested it by running two sequenced VCOs into the audio inputs and a
sequencer cv and two LFOs into three of the CV inputs. Depending on how I
had the inputs set, I got something that sounded like aluminum cans going
through a meat grinder, to swishy, swirly phasey effects which reminded me
a lot of the more screwed up programs in my Lexicon Vortex. It's really
hard to compare to any module or effects processor I've heard so far. It's
something between a fuzz box, a phaser, a pulse width modulator, and an
80's arcade game violently self reproducing. Sexy and evil at the same
time.

---------------------------------------------------------------

It's currently not in a cabinet, but when I get my new boxes assembled, I can post a sample or two.

Romeo

arrow arrow arrow arrow
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Uncle Krunkus
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Joined: Jul 11, 2005
Posts: 4759
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PostPosted: Mon Sep 11, 2006 4:41 pm    Post subject: Reply with quote  Mark this post and the followings unread

A good thread gets resurrected many times! Smile
But I can't get any kind of response from either of those links. Crying or Very sad
And I'm itching to do some EXORing. "Sexy & evil at the same time" I can't imagine a more inviting description for a sound. (Maybe because it describes me so well! Laughing Twisted Evil Laughing)

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vtl5c3



Joined: Sep 08, 2006
Posts: 423
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PostPosted: Mon Sep 11, 2006 5:01 pm    Post subject: Reply with quote  Mark this post and the followings unread

the links work fine for me. Try right-clicking (CTRL-click on a Mac) on the links and select Download or save link.
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Uncle Krunkus
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PostPosted: Mon Sep 11, 2006 5:25 pm    Post subject: Reply with quote  Mark this post and the followings unread

No,
It just sits there.

Edit-
It's okay, it worked. I just had to leave it for 5mins. Wink

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Scott Stites
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Joined: Dec 23, 2005
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PostPosted: Mon Sep 11, 2006 10:10 pm    Post subject: Reply with quote  Mark this post and the followings unread

Oh, man, this is too cool......
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synth_ollie



Joined: Sep 11, 2006
Posts: 149
Location: sweden

PostPosted: Tue Sep 12, 2006 10:41 am    Post subject: Reply with quote  Mark this post and the followings unread

hi, Im a new member of this forum Smile

vtl5c3 wrote:

I got something that sounded like aluminum cans going
through a meat grinder, to swishy, swirly phasey effects which reminded me
a lot of the more screwed up programs in my Lexicon Vortex. It's really
hard to compare to any module or effects processor I've heard so far. It's
something between a fuzz box, a phaser, a pulse width modulator, and an
80's arcade game violently self reproducing. Sexy and evil at the same time.


I would very much like to hear this !

cheers
OLLIE
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toppobrillo



Joined: Dec 10, 2005
Posts: 766
Location: oakland, ca
G2 patch files: 1

PostPosted: Tue Sep 12, 2006 2:28 pm    Post subject: Reply with quote  Mark this post and the followings unread

hey i simulated this in the G2 demo, here is the patch... it seems that i have seen something like this before perhaps with window comparators.


pw mult.pch2
 Description:

Download
 Filename:  pw mult.pch2
 Filesize:  1.42 KB
 Downloaded:  879 Time(s)

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Scott Stites
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Joined: Dec 23, 2005
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PostPosted: Tue Sep 12, 2006 8:26 pm    Post subject: Reply with quote  Mark this post and the followings unread

Forgot to mention

welcome Synth Ollie. I expect to see some pics in the modular pic thread Very Happy

Cheers,
Scott
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synth_ollie



Joined: Sep 11, 2006
Posts: 149
Location: sweden

PostPosted: Wed Sep 13, 2006 6:40 am    Post subject: Reply with quote  Mark this post and the followings unread

Scott Stites wrote:
Forgot to mention

welcome Synth Ollie. I expect to see some pics in the modular pic thread Very Happy



thanks

Smile

/O
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richardc64



Joined: Jun 01, 2006
Posts: 614
Location: NYC
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PostPosted: Wed Sep 13, 2006 3:51 pm    Post subject: Reply with quote  Mark this post and the followings unread

First of all, a long overdue Thanks All for the kind responses to my first post months ago.

Hasn't anyone noticed that the oscillators in Ray Wilson's WackyZany etc. http://www.musicfromouterspace.com/analogsynth/YOUR_FIRST_SYNTH/YOUR_FIRST_SYNTH.html are the same type under discussion -- Schmitt Triggers -- and that the Wackiness oscillator is voltage controlled? I've extracted the circuit fragment and uploaded it here:
http://www.geocities.com/richardc64/circuits/wz_osc.gif

(How do I make a pic appear within a post?)

Eliminate S1 and D1. R11 sets the initial frequency. Replace it and R15 with a fixed high value resistor. Put your CV on pin 1 of the Zaniness pot, repeat 5 times, varying the RC vaalues, and voila, CV metallic noise.

But wait: is it necessary to vary all 6 oscillators to get pitched noise? Maybe varying only 2 would be enough. See the microlarge TR-808 Clone here:
http://xlargex.xl.funpic.de/

Note that no xor is present. The outputs of the oscillators are passively mixed.

(And as long as we're reviving old threads, the filter in Ray Wilson' WP20 Mini-synth is a simple, single supply VCF.)
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Uncle Krunkus
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PostPosted: Wed Sep 13, 2006 4:31 pm    Post subject: Reply with quote  Mark this post and the followings unread

If it's your own pic just click add attachment and browse to your pic. If it's from someone else's site I think the convention is to paste a link to the site.
Great link BTW to the XlargeX 808 Clone! Smile

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richardc64



Joined: Jun 01, 2006
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PostPosted: Thu Sep 14, 2006 7:58 am    Post subject: Reply with quote  Mark this post and the followings unread

Uncle Krunkus wrote:

Great link BTW to the XlargeX 808 Clone! Smile


Thanks, but I found it in this very forum,
http://electro-music.com/forum/topic-13103.html
so credit to "211."
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varice



Joined: Dec 29, 2004
Posts: 725
Location: Northeastern shore of Toledo Bend
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PostPosted: Sat Sep 16, 2006 5:52 pm    Post subject: Reply with quote  Mark this post and the followings unread

If you have not already checked out the Clavia Nord Modular G2 Demo Software for patching logic gates for audio noise generation, I would strongly recommend it. You can get a free copy here:

http://www.clavia.se/products/nordmodular/software.htm

I have posted an XOR patch that will load into the Demo Software here:

http://electro-music.com/forum/topic-13384.html

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droffset



Joined: Feb 02, 2009
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PostPosted: Tue May 04, 2010 11:33 pm    Post subject: Reply with quote  Mark this post and the followings unread

Scott Stites wrote:
'Tis. RC time constant is simply R*C - the time it takes a capacitor to charge up to 63% of full charge or discharge to 37% of full charge.

Notice V or I are not a factor in the equation. A lower voltage will mean a lower current...but, well, lower voltage - the cap doesn't have as far to go.

This is what makes expo portamento applied to CV do its thang - same concept. If you play a low A and a high A, it takes the same amount of time to glide as it does if you go from low A to low C. As an aside, linear glide will take a longer time to go to the high A then the low C, but there's usually an op amp or two involved there.

Cheers,
Scott


There is huge cool knowledge in this thread and it deserves a good bump.
It is also good for Lunetta knowledge. (Tagging for keyword searches.)

This forum is awesome. Lots to find.

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Edit: Spelling mistakes.
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