| Author |
Message |
stolenfat
Joined: Apr 17, 2008
Posts: 476
Location: Sunny Oakland California
Audio files: 1
|
 Posted: Mon Oct 20, 2008 5:07 pm Post subject:
Lunetta moduals
Subject description: Some queestions regarding perpous |
  |
|
I've been relooking at some of the projects in this forum:
http://electro-music.com/forum/topic-27239.html
...and was wondering what some of these lunetta modulars do?
Theres a project in there built into a suitcase with some circuits described and i was wondering what they do. Could some one(s) give me some info here? Im very interested in building some experiments like this down the road.
-4015 dual shift register
Its of bugs design, i checked out his page, as I often do, and not to much info was given concerning perpous or what it does
-4094 shift register
-how does it differ from the 4015 module?
-4011 nand gate
obviously it concerns logic, but how does it process signals? what kind of signals does it end up generating and how can it be used with others? What is the ultimate result and why would i want one?
-4024 divider sub/osc
ok, so i'll assume its a sub sonic signal generator? maybe not? how does it divide, what does it divide, is it like a signal splitter?
-R/2R ladder
I have seen lots o these, some using diodes, do they simply join signals in a series, what effects can this have? Usefulness?
I would love some info, the sound samples provided in that forum are very cool and very inspiring.
| Description: |
|
| Filesize: |
93.46 KB |
| Viewed: |
436 Time(s) |
| This image has been reduced to fit the page. Click on it to enlarge. |
|
|
|
|
Back to top
|
|
 |
stolenfat
Joined: Apr 17, 2008
Posts: 476
Location: Sunny Oakland California
Audio files: 1
|
| Posted: Tue Nov 04, 2008 11:11 pm Post subject:
|
|
|
nothing?
I noticed the logic gate or maybe they were dividers created rhythm?
How? |
|
|
Back to top
|
|
|
macumbista
Joined: Sep 12, 2007
Posts: 398
Location: berlin
Audio files: 3
|
| Posted: Wed Nov 05, 2008 4:47 am Post subject:
Logic Gates |
|
|
Think of the NAND gate as a way to generate patterns from the input of two square wave:
| Code: | INPUT OUTPUT
A B A NAND B
0 0 1
0 1 1
1 0 1
1 1 0 |
If both square waves are "high" or "low", it inverts them. If one is "high" and one is "low", it goes "high". Think of it like square wave AM synthesis if you like. Or use it to control the gain, envelope or frequency of a third oscillator.
XOR or XNOR gates can be something like a ringmod for square waves. Tom Bugs uses this feature in his Weevil sound generators.
Check here for all the different logic operations.
http://en.wikipedia.org/wiki/Logic_gate
In the electronics world, most of these can be done with a single IC, and you might be able to see how you could use them in your synth. A very useful reference guide to ICs, their functions and pinouts is here:
http://kingswood-consulting.co.uk/giicm/
_________________
Esoteric drones and nonlinear distortion
Custom/handmade experimental instruments
macumbista.net |
|
|
Back to top
|
|
|
macumbista
Joined: Sep 12, 2007
Posts: 398
Location: berlin
Audio files: 3
|
| Posted: Wed Nov 05, 2008 4:56 am Post subject:
|
|
|
By the way, there are plenty of sound samples on the original thread to give you a very good idea what the suitcase one in particular does, especially with the shift registers.
_________________
Esoteric drones and nonlinear distortion
Custom/handmade experimental instruments
macumbista.net |
|
|
Back to top
|
|
|
RF
Joined: Mar 23, 2007
Posts: 1502
Location: Northern Minnesota, USA
Audio files: 28
|
Posted: Wed Nov 05, 2008 8:06 am Post subject:
Re: Lunetta moduals
Subject description: Some queestions regarding perpous |
|
|
Oh - Sorry, I didn't see this thread.
You should really just breadboard up a bunch of this stuff - it makes much more sense that way.
The 4015 is a 4 stage shift register, and the 4094 is an 8 bit shift register.
Feed them a Clock signal and reset signal from clocks or other logic. I used them in those patches to create patterns of pulses which I fed into the R/2R ladder or to other logic clock or reset inputs...
The R/2R ladder takes those pulses (and any others I feel like sending to it) and outputs a varying voltage with each pulse or combination of pulses. I feed that into the 555 VFO, or into a 40106 frequency controlling circuit, or to the power input of the 40106 oscilators to create different pitches and patterns.
Sometimes I'll use one output of a shift register as a clock or reset for the other shift registers.
The 4024 takes pulses from whatever you feed it as a clock source and provides divisions to clock or reset other modules. If you feed it an audio signal it will output divisions of that audio either for use as audio or to feed other clock circuits.
I really don't use the NAND gate all that much, but Macumbista provided a good description of that. Mainly I put it in because I had the gate left over from the Ringmod circuit and had room to put it on the panel.
This stuff is real fun. Build some up!
bruce
_________________
www.sdiy.org/rfeng
"I want to make these sounds that go wooo-wooo-ah-woo-woo.”
(Herb Deutsch to Bob Moog ~1963) |
|
|
Back to top
|
|
|
stolenfat
Joined: Apr 17, 2008
Posts: 476
Location: Sunny Oakland California
Audio files: 1
|
| Posted: Fri Jan 02, 2009 6:55 pm Post subject:
|
|
|
to make a batch of clocks from a 40106 you just set up a basic capacitor resistor loop to make it oscillate right? Those square waves which i hear from my amp can also double as clock signals?
or do i need some more circuitry? |
|
|
Back to top
|
|
|
RF
Joined: Mar 23, 2007
Posts: 1502
Location: Northern Minnesota, USA
Audio files: 28
|
| Posted: Fri Jan 02, 2009 8:50 pm Post subject:
|
|
|
Yep - That's right, Stolenfat.
_________________
www.sdiy.org/rfeng
"I want to make these sounds that go wooo-wooo-ah-woo-woo.”
(Herb Deutsch to Bob Moog ~1963) |
|
|
Back to top
|
|
|
|
Forum index » DIY Hardware and Software » Lunettas - circuits inspired by Stanley Lunetta
FAQ
Calendar
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
Chat Room
