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jnuaury
Joined: Feb 28, 2008 Posts: 161 Location: chicago
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Posted: Wed Jun 25, 2008 12:56 am Post subject:
lunetta sound samples |
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i noticed a lack of sounds in this forum....
the following lunetta clips maybe be a little different than the "traditional" lunetta. both clips feature a simple 40106 oscillator as the sound source but the 40106 has a CV input
the CV input is actually connected to the +V pin so the chip actually uses the CV input to power the IC
the first clip involves ZERO knob twiddling its just a handful of oscillators (from a separate chip) powering the 40106
the second clip is a hardwired lunetta patch which functions as a sequencer
besides the 40106 clocking oscillators there no are components on the board beyond the ICs
im running a clock into a 4040 divider to clock into a 4051
theres a rotary switch to select what divisions clock the 4051
the first selection though instead of having divisions of the first osc has 2 extra oscillators patched in to make unsteady rhythms and patterns
the 4051 routes 8 voltage dividers into the common which is a CV out
im running my lunetta stuff off 5 volts so i can try to keep the signals under that range if i plug them into external modules
the sequecer clip runs through the modes in order...
1) three clocks
osc 1 divided by...
2) /1, /2, /4
3) /1, /4, /8
4) /1, /4, /16
5) /1, /2, /8
6) /1, /2, /16
I think that covers things for now....
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Uncle Krunkus
Moderator
Joined: Jul 11, 2005 Posts: 4761 Location: Sydney, Australia
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Posted: Wed Jun 25, 2008 1:48 am Post subject:
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Cool!
Nice to hear some square waves! _________________ What makes a space ours, is what we put there, and what we do there. |
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jnuaury
Joined: Feb 28, 2008 Posts: 161 Location: chicago
Audio files: 9
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Posted: Wed Jun 25, 2008 2:06 am Post subject:
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well yes you do normally get square waves...
but with that "CV" input i mentioned you can sneak some curves out of those chips
here is some scope shots of...
the shot that has the peak and then valley has the scope locked on to one cycle - it was a repeating waveform
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loss1234
Joined: Jul 24, 2007 Posts: 1536 Location: nyc
Audio files: 41
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Posted: Wed Jun 25, 2008 5:59 am Post subject:
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wow
can you explain a little more about how you are using cv with the 40106.
if i understand correctly, you are NOT giving the pin 14 of the chip any power except for a cv input (is this tied to ground like a normal jack?)
so when you put cv in to this jack, is that the only power the 40106 gets? does it control it like a starve pot instead of a regular pitch CV?
the more information the better and thanks so much for taking the time to do t his.
i am sifting through recordings i did this weekend trying to find something to post as well.
i will definitely study your notes
WE SHOULD HAVE A LUNETTA PATCH THREAD where people explain how they connect the chips to get cool sounds. _________________ -------------------------------------------- check out various dan music at: http://www.myspace.com/lossnyc
http://www.myspace.com/snazelle
http://www.soundclick.com/lossnyc.htm http://www.indie911.com/dan-snazelle |
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loss1234
Joined: Jul 24, 2007 Posts: 1536 Location: nyc
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loss1234
Joined: Jul 24, 2007 Posts: 1536 Location: nyc
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loss1234
Joined: Jul 24, 2007 Posts: 1536 Location: nyc
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jnuaury
Joined: Feb 28, 2008 Posts: 161 Location: chicago
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Posted: Wed Jun 25, 2008 7:40 am Post subject:
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loss1234 wrote: |
so when you put cv in to this jack, is that the only power the 40106 gets? does it control it like a starve pot instead of a regular pitch CV?
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yes! thats it, there is no power going to the chip at all |
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jnuaury
Joined: Feb 28, 2008 Posts: 161 Location: chicago
Audio files: 9
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Posted: Wed Jun 25, 2008 7:52 am Post subject:
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loss1234 wrote: | also i know i have asked before but how can we turn squarewaves into other waves? is there a lunetta waveshaper...not so much changing the duty cycle (which i dont really understand either) but turning these waves into saw or tri or sine.
thanks |
"starve" functions whether its a pot or the cv as power method can both make cmos chips act funny enough not to be perfect square waves but at the same time they wont serve their intended purposes exactly but act a little wonky instead
its a trade-off im willing to make
and as for real waveshaping... square waves really have no timing information - a 0-5 volt saw encounters every voltage between 0-5 only once in each cycle... a 0-5 pulse hits 0 and 5 once but doesnt encounter the inbetween voltages so theres no way to know how far you are within the cycle
with that said theres always ways to get round things
http://www.robthefiddler.com/electronics-audio-diy/circuit-experiments/big-johnson-signal-generator/ |
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jnuaury
Joined: Feb 28, 2008 Posts: 161 Location: chicago
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Posted: Wed Jun 25, 2008 8:14 am Post subject:
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loss1234 wrote: | a few things in your explanation confuse me
1. "the 4051 routes 8 voltage dividers into the common which is a cv out"
ok, what are you using for voltage dividers? pots? and are these then being summed together? or R2R'ed together? you are making a common cv out with these but in your samples, what did you connect the cv to? your 40106 +v ??
thanks |
ok the setup is fairly similar to the baby10 schematic but i think its much more fun while being just as easy
first the 4051 is essentially a switch that toggles one connection between 8 options what makes it fun is that it receives a 3-bit binary number to know what option to connect to
a 3-bit binary number is 3 square waves
so if all of the square waves are low then you are at the first step and when all are high you are on the last step and with some high some low you get inbetweens
so it selects the options like this (zero would be the first step and seven would be the last step)
0 0 0 = 0
0 0 1 = 1
0 1 0 = 2
0 1 1 = 3
1 0 0 = 4
1 0 1 = 5
1 1 0 = 6
1 1 1 = 7
and sorry if things get confusing but they are actually wired a little different than i thought....
so i have 5 volts wired to the connection that gets switched between 8 channels
i have the output of each channel wired to the right leg of different 100k pots
the left leg of each pot is tied to ground and the middle leg of all pots are then tied together via diodes to what becomes the CV out
ill try to draw a diagram later
its really more simple than it may seem |
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loss1234
Joined: Jul 24, 2007 Posts: 1536 Location: nyc
Audio files: 41
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Posted: Wed Jun 25, 2008 9:41 am Post subject:
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ok, i tried doing it the way i THOUGHT you did.
40106 oscillators X 3.
into A B and C inputs of the 4051.
then, i took one oscillator and made it the clock for the 4040. i took a bunch of the 4040 outputs and stuck them into 4051 INPUTS 1-7. then i took the 8 in/out (pin 3 i think) and used that as the CV. BUT it would NOT power the 40106. So instead, i used a vactrol and put that into pin 1 and 2 of the new 40106 with a 224 cap to gnd.
very cool.
very metallic sounding. different than yours. i think more noise like. (my scope had a hard time finding a waveform it could grab on to)
so, i think you are saying that instead, yours had a pot on each input to the 4051? so actually, you were using all 8 as outputs? and you dioded them together and stuck that into pin 8 of another 40106?
sounds cool.
also, i tried plugging the cv out of mine into my cgs vco. good sounds there as well.
very interesting.
i am going to have to really start using the 4050/51/and 52 more often!
thanks _________________ -------------------------------------------- check out various dan music at: http://www.myspace.com/lossnyc
http://www.myspace.com/snazelle
http://www.soundclick.com/lossnyc.htm http://www.indie911.com/dan-snazelle |
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loss1234
Joined: Jul 24, 2007 Posts: 1536 Location: nyc
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jnuaury
Joined: Feb 28, 2008 Posts: 161 Location: chicago
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RF
Joined: Mar 23, 2007 Posts: 1502 Location: Northern Minnesota, USA
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jnuaury
Joined: Feb 28, 2008 Posts: 161 Location: chicago
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Posted: Wed Jul 30, 2008 9:56 pm Post subject:
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RF wrote: | Alligator clips from the Lunetta into the computer |
i used this same method!
and thanks for sharing your results! |
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blue hell
Site Admin
Joined: Apr 03, 2004 Posts: 24079 Location: The Netherlands, Enschede
Audio files: 278
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Posted: Sat Aug 02, 2008 9:09 am Post subject:
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RF wrote: | [...] This was recorded [...] Three chips [...] |
Amazing diversity for so few chips and nice sample as well. _________________ Jan
also .. could someone please turn down the thermostat a bit.
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mosc
Site Admin
Joined: Jan 31, 2003 Posts: 18197 Location: Durham, NC
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Posted: Sat Aug 02, 2008 11:41 am Post subject:
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OMG, I missed this topic. Great sounds. This is fun music to listen too. Great stuff. Thanks. _________________ --Howard
my music and other stuff |
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RF
Joined: Mar 23, 2007 Posts: 1502 Location: Northern Minnesota, USA
Audio files: 28
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Posted: Sat Aug 02, 2008 10:45 pm Post subject:
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I put together what I imagine is a more 'conventional' Lunetta patch - I'm trying to figure out just what the possibilities are with these circuits and these are really just first steps. I think I have enough modules to play a bit now. I'm really short of patch cords, though - and a bunch of those stacking plugs are pretty tempting.
Anyway - here's just a clip of the pictured patch. Halfway through the recording I moved one plug from the 4024 Clock Divider/Sub Oscillator from -6 octave to -7.
This patch uses the Bugs 40106 Osc's, 8 stage serial Shift Register, 4 stage Shift Register, 4024 clock divider, R/2R Ladder.
Perhaps not quite Lunetta like - I used a simple 555 VCO for the single oscilltor voice you hear.
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RF
Joined: Mar 23, 2007 Posts: 1502 Location: Northern Minnesota, USA
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blue hell
Site Admin
Joined: Apr 03, 2004 Posts: 24079 Location: The Netherlands, Enschede
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Posted: Sun Aug 03, 2008 3:55 pm Post subject:
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I don't want anyone's else samples
erm .. I do actually I'd love to hear some more surprise machines in fact, but what I mean is that I very much like your experiments Bruce, I can hear, and almost see, your smile from here _________________ Jan
also .. could someone please turn down the thermostat a bit.
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RF
Joined: Mar 23, 2007 Posts: 1502 Location: Northern Minnesota, USA
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Posted: Sun Aug 03, 2008 5:12 pm Post subject:
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Thanks, Jan
Each time I sit down with it for a few minutes something totally different comes out of it. Since I never heard a lunetta before, I wasn't sure what to expect, so each new patch is pretty entertaining to me.
bruce |
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scriptstyle
Joined: Jan 22, 2008 Posts: 250 Location: nj
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Posted: Mon Aug 04, 2008 6:19 am Post subject:
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that last one was great yea you dont want to hear my samples
but over last week i decided i am revamping my current lunetta. taking it
out of the milkcrate and also going into a suitcase. i started the panel
design last friday. im hoping it to be a standalone synth and also a interface for my modular!! |
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mosc
Site Admin
Joined: Jan 31, 2003 Posts: 18197 Location: Durham, NC
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Posted: Wed Aug 06, 2008 11:05 am Post subject:
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RF wrote: | Each time I sit down with it for a few minutes something totally different comes out of it. Since I never heard a lunetta before, I wasn't sure what to expect, so each new patch is pretty entertaining to me. |
Bruce. You've got it! It sounds just like the Lunettas we used to build in the 70s. Nothing wrong with the 555 oscillators. Great looking system you have in that case.
With complicated patches, you can get patterns that go for a long time and then suddenly change. It's a lot of fun.
Suggestions:
Make two patches that play "in stereo"
Add modulation with NAND gates or something.
That said, you have it now. I hope you can see why I'm still enthusiastic for these things after more than 30 years. It's got all the draw of bent instruments, but even more fun, IMHO. _________________ --Howard
my music and other stuff |
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RF
Joined: Mar 23, 2007 Posts: 1502 Location: Northern Minnesota, USA
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Posted: Wed Aug 06, 2008 2:29 pm Post subject:
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mosc wrote: | I hope you can see why I'm still enthusiastic for these things after more than 30 years. It's got all the draw of bent instruments, but even more fun, IMHO. |
Thanks for the input and suggestions mosc. It's been a really fun process.
I'm looking through my CMOS to see what I have that might be interesting to add.
It would be fun to hear something from your machine, mosc Pull it out and fire it up!
bruce |
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goodrevdoc
Joined: Sep 11, 2006 Posts: 288 Location: Philadelphia, PA
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Posted: Thu Aug 07, 2008 9:04 pm Post subject:
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Quote: | It's been a while since a circuit's operation made me laugh - I've been having a lot of fun with these.
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I just listened to that sample and couldn't help giggling to myself. That is one banana jacked fun dispenser you've got there sir. Sadly, mine is still on paper. (moving in a few weeks)
-justin |
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