[New Project] vcNOIZ -- a harsh voltage controlled noise VCO

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[New Project] vcNOIZ -- a harsh voltage controlled noise VCO

Post by hexinverter » Fri Sep 21, 2012 10:31 am

Hey ladies and gents :cloud:

I've yet another module I am developing. It is a 1bit voltage controlled noise generator with sub-octave simultaneous outputs and voltage control of the pitch. It creates gnarly ass C64/chiptune sounding noise textures.

PROJECT PAGE: http://cv.hexinverter.net/?projects=vcn ... format-pcb

PRE-ORDER HERE: http://igg.me/p/282076?a=227451

[video][/video]

..

[video][/video]

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Here is the feature-set:

Inputs:
- Expo. response CV input (-V to +V)
- Linear response CV input (-V to +V) -- great for audio rate FM, as the audio demo shows. It sounds positively gruesome!
- Clock input (square wave, positive logic)

Controls:
- Pitch control (to tune base frequency, just like a VCO)

Outputs:
- Base frequency noise output (a little smoother sounding than the divisions) [audio coupled]
- Sub octave /4 output (gritty sounding) [audio coupled]
- Sub octave /8 output (gritty sounding) [audio coupled]
- Base frequency DC coupled gate output (for when wanting a random gate when using a slower clock/pitch rate)
- Internal clock output (there was an extra opamp, so I figured this could be useful)


An unedited audio demo (with some drone mixed in):

http://www.soundcloud.com/hex-inverter/ ... controlled

http://www.soundcloud.com/hex-inverter/ ... noiz-makes


Put your name on my mailing list to receive a notification when this project is in stock! http://eepurl.com/pDf_5

Panels will be available at http://www.resynthesis.co.uk
:

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Watch the video for more info :)

I will be ordering PCBs for this soon. Let me know if you're interested so I can try and gauge how many to order!

[video][/video]
Last edited by hexinverter on Fri Jan 04, 2013 4:22 pm, edited 20 times in total.
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Post by raisinbag » Fri Sep 21, 2012 10:59 am

Stop making cool shit! :75: :deadbanana:

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Post by hexinverter » Fri Sep 21, 2012 11:01 am

raisinbag wrote:Stop making cool shit! :75: :deadbanana:
I've definitely got a serious addiction to creating things :( lol :cloud:
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Post by mmelnick » Fri Sep 21, 2012 11:06 am

I'm totally interested however i'm not sure I have the skill or time to build that. Any chance of making a few complete?
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Post by decaying.sine » Fri Sep 21, 2012 11:12 am

Offered at your website when ready?
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Post by executiveBlaster » Fri Sep 21, 2012 11:18 am

Coool! Make it make it.

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Post by hexinverter » Fri Sep 21, 2012 11:40 am

mmelnick wrote:I'm totally interested however i'm not sure I have the skill or time to build that. Any chance of making a few complete?
I'm always down for assembling some stuff, yeah! :)

Whenever Ben is able to make a panel I will offer a few handmade ones, sure :cloud:
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Post by hexinverter » Fri Sep 21, 2012 11:41 am

decaying.sine wrote:Offered at your website when ready?
Of course! :goo: :goo: :goo: :goo: :goo:

executiveBlaster wrote:Coool! Make it make it.
:cloud:
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Post by HueMonContact » Fri Sep 21, 2012 11:48 am

Dude do you sleep? Yet another cool circuit!!!

I'll have to add this to my ever growing backlog of projects to build.
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Post by hexinverter » Fri Sep 21, 2012 11:49 am

HueMonContact wrote:Dude do you sleep? Yet another cool circuit!!!

I'll have to add this to my ever growing backlog of projects to build.
Between school, electric race car design and this...no, not really. lol :doh:
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Post by J3RK » Fri Sep 21, 2012 11:57 am

Very nice! I'm a HUGE fan of digital noise. I'm getting mine from the CD4006 chip, but they're getting a bit harder to find. Your design also has more features. Mine's just a simple clock in/noise out.

I find digital noise much more interesting than any color of analog noise. It's really fun when gated, to make C64 - M.U.L.E. style drums. :party:

:tu: :tu: :tu:

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Post by hexinverter » Fri Sep 21, 2012 12:13 pm

J3RK wrote:Very nice! I'm a HUGE fan of digital noise. I'm getting mine from the CD4006 chip, but they're getting a bit harder to find. Your design also has more features. Mine's just a simple clock in/noise out.

I find digital noise much more interesting than any color of analog noise. It's really fun when gated, to make C64 - M.U.L.E. style drums. :party:

:tu: :tu: :tu:
Yessir! Precisely :)

Actually, this IS based around the CD4006. I don't know of any other suitable CMOS chips that can make a desirable LFSR, and do not want to use a microcontroller for it. I guess I could cascade a bunch of other ones to make it 32bits long, but that would be a lot more chips!

Mouser makes a suitable replacement. It is what is being used in this video: http://ca.mouser.com/ProductDetail/NTE/ ... FYHO4Ds%3d

Also, CD4006 aren't that hard to find :) Plenty on eBay (just don't by from China) and lots of surplus places in North America with them in stock still! Maybe I'll try and find a big batch of them to sell in pairs with the PCBs for this project (saving a few dollars from the Mouser replacements)
Last edited by hexinverter on Fri Sep 21, 2012 12:19 pm, edited 3 times in total.
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Post by mckenic » Fri Sep 21, 2012 12:14 pm

OH HELLZ YES!

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Post by hexinverter » Fri Sep 21, 2012 12:21 pm

Oh yes, and if you are at all worried about Mouser only having just over 100 in stock...Newark has 3,500 in stock :D

http://www.newark.com/nte-electronics/n ... tt=nte4006
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Post by moogah » Fri Sep 21, 2012 12:23 pm

This tingles my interests.

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Post by J3RK » Fri Sep 21, 2012 12:25 pm

hexinverter wrote:Oh yes, and if you are at all worried about Mouser only having just over 100 in stock...Newark has 3,500 in stock :D

http://www.newark.com/nte-electronics/n ... tt=nte4006
Looks like supplies are holding. :mrgreen:

I've actually got about 50 of them myself. :lol:

Cool project!

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Post by raisinbag » Fri Sep 21, 2012 12:25 pm

How many 4006 does this bad boy need. If it needs a keypad, relay, windows 95 or a condenser mic I'm all ready to build :omg:

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Post by hexinverter » Fri Sep 21, 2012 12:27 pm

raisinbag wrote:How many 4006 does this bad boy need. If it needs a keypad, relay, windows 95 or a condenser mic I'm all ready to build :omg:
Haha! Two of them, my good sir...just like the 909 kick ;)

That keypad is from the 60's I think! I got a bunch of them in this pile of old parts...still haven't figured out what to do with them. haha!
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Post by defenestration » Fri Sep 21, 2012 2:12 pm

very promising, I'll build one :tu: kinda like a voltage controlled aliasing generator

do you plan to add the ability to patch an external clock? presumably no problem to clock at subaudio? for generating random pulses to use as triggers and things

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Post by rosch » Fri Sep 21, 2012 2:21 pm

count me in!

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Post by hexinverter » Fri Sep 21, 2012 4:08 pm

defenestration wrote:very promising, I'll build one :tu: kinda like a voltage controlled aliasing generator

do you plan to add the ability to patch an external clock? presumably no problem to clock at subaudio? for generating random pulses to use as triggers and things
Yes, external clock input will be an included feature :)

Also, the divided outputs mean you can set the internal clock slow for some grainy noise, then take divisions of that and use the divisions for gating different things :cloud:

If the circuit isn't too complex (which it just about is already...so don't hold me to this), I'm even thinking of adding a simple sample and hold to add a random voltage output :tu:
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Post by CJ Miller » Fri Sep 21, 2012 5:01 pm

Horrendous as it may be, vc clocked CMOS noise I think is pure ear candy. Your implementation of it sounds great. My first ever "original" module not copied from anything else was a vc noise circuit using an SN76477 because I had those and no 4006s. It's the small version so I glued it on its back and soldered it with wrap wire, which was like 40 AWG or so. I was amazed that it worked.

Actually, I don't remember quite how it worked, and I just found it again this week, so I'm going to go re-visit it.

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Post by transistor logic » Fri Sep 21, 2012 5:06 pm

nice sounds !

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Post by whitewulfe » Fri Sep 21, 2012 7:30 pm

FUCK YES!

I swear, if you keep coming out with so many kickass designs I'm going to be forced to put "pay Hex money for the latest sex in PCB format" in my budget :sb: :sb:

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Post by inlifeindeath » Fri Sep 21, 2012 8:32 pm

looks awesome! i'm confused on how the divider works. Seems you are using a CD4040, but wouldn't this convert the 'random noise voltages' into digital 1's and 0's? Any chance of a schem?
Also, I'd like to be able to buy a 4006 with the board, if it matters...

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