DDSR

Modular and other sound devices from BugBrand.

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dogoftears
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Post by dogoftears » Mon Jul 16, 2018 9:51 am

BugBrand wrote:Yeah, the D-to-A is kind of a bonus generation from the Digital Shift Register.

Both types of shift register is like a chain of buckets (yep, BBD-ish) where each time a clock occurs, the contents gets passed along the chain, but:
Digi-shift - each stage can either be on or off
Analogue-Shift-Register - each stage can be any voltage - they're all Sample & Holds.

A dual quantizer would go very nicely with the DDSR! Imagine triggering them with different taps and feeding them with different D-to-A signals... Don't get me tempted! (what I really want to do is a dual Sonic Potions Penrose - sometime....)
what's interesting is that the DDSR produces such musical intervals without any quantization! SR's are so f'in weird, i'm completely lost in this module.

the 3 things that come to mind when I use those DA outs--
quantization would be nice
slew would be nice
attenuation would be nice-- they have a huge 10 volt range.

slew would really take it to a new level IMO.

what kinds of things do you guys like to feed to the data input? i'm just using one of the VCO outputs from the synth voice atm.
music and mastering: http://xexify.com
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radams
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Post by radams » Mon Jul 16, 2018 10:44 am

BugBrand wrote:Yeah, the D-to-A is kind of a bonus generation from the Digital Shift Register.

Both types of shift register is like a chain of buckets (yep, BBD-ish) where each time a clock occurs, the contents gets passed along the chain, but:
Digi-shift - each stage can either be on or off
Analogue-Shift-Register - each stage can be any voltage - they're all Sample & Holds.

A dual quantizer would go very nicely with the DDSR! Imagine triggering them with different taps and feeding them with different D-to-A signals... Don't get me tempted! (what I really want to do is a dual Sonic Potions Penrose - sometime....)
Thanks Tom
I think I get the gist of it now.
I do have one of the Barton dual quantizer you made up a while ago.
Am I correct in remembering that it only has a +5 volt range or is it a full +10?
Thanks

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chrisdermo
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Post by chrisdermo » Mon Jul 16, 2018 5:00 pm

BugBrand wrote:(what I really want to do is a dual Sonic Potions Penrose - sometime....)
:omg:
WTB / WTTF: Bugbrand PRC2B, DD3, PRC4, ENV1

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BananaPlug
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Post by BananaPlug » Tue Jul 17, 2018 3:30 pm

DDSR in the house. Just getting started. :hyper:
Here's something driving DRM, a low SVF and Batcha's RM. The various RM percussion sounds are selected by taking bits of DDSR to the inputs of a CLK2A! I'm just letting it run by itself then fading out the three voices. Seems like there's a ton of room for synced beats spiced with enough wonkiness to keep them interesting.

Another one: 20180718-A44-DDSR-contd

:guinness:

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chrisdermo
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Post by chrisdermo » Sun Jul 22, 2018 4:58 pm

Fun patch based using DDSR and a 2bitbinmux to produce stereo acid sounds via the CoF individual outs - low panned centre, mid and high are hard left/right with mid inverted. scrotum labs grille + radio music in use too for drum duties. Don't forget to use headphones!

[video][/video]

if anyone wants to hear the full 9min or so take it's on soundcloud (embedding won't work?)
http://www.soundcloud.com/dermo/bugbran ... dited-take
Last edited by chrisdermo on Mon Jul 23, 2018 7:25 am, edited 1 time in total.
WTB / WTTF: Bugbrand PRC2B, DD3, PRC4, ENV1

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BugBrand
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Post by BugBrand » Mon Jul 23, 2018 3:34 am

radams wrote:I do have one of the Barton dual quantizer you made up a while ago.
Am I correct in remembering that it only has a +5 volt range or is it a full +10?
Thanks
Oops - missed replying.
Yes, the Barton is 0 to +5V I'm 99% sure from memory.
It isn't the most accurate design, but I remember it being fun & OK.
As with many simple quantizers it could benefit from attenuation / mixing (and/or offset) at the input so you get more control over where abouts your are within the scale limits.

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BugBrand
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Post by BugBrand » Thu Jul 26, 2018 10:05 am

I just posted a first version of instructions to the original post

[let's see if this link works for downloading it direct - yup, think so...]

I'll be shouting out to a few of you now that a few more DDSRs have been built...

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Post by jimmie » Thu Jul 26, 2018 12:57 pm

Those videos are very nice! and I'm broke :deadbanana: :ripbanana:

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BananaPlug
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Post by BananaPlug » Thu Jul 26, 2018 2:13 pm

I love the way you can inject an occasional pulse through the Data input and cause a little craziness to happen. These generative examples are all about a minute and not very different. I was just playing around with small variations. Made from DDSR, some SEQ related stuff, DRM, a pile Blacet, etc.
DDSR-Blacet-rough-A
Slightly better tuned version (mildly excruciating)
DDSR-Blacet-rough-B
Yet another round
DDSR-Blacet-rough-C

:hmm: I wonder if we should have separate threads for DDSR Q&A and examples of what we're doing with it?

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fredguy
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Post by fredguy » Thu Jul 26, 2018 10:48 pm

I parked the DDSR next to a matrix mixer and run the 4 d/a outs into the
mixer, two of the mixer outputs into the DDSR data inputs. The mixer also
limits the output voltages when feeding a Barton quantizer, filter pinging etc.

Endless musical variations on tap.

:party:
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lud
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Post by lud » Fri Jul 27, 2018 7:44 am

Great video Chris and a lovely set up!
chrisdermo wrote:Fun patch based using DDSR and a 2bitbinmux to produce stereo acid sounds via the CoF individual outs - low panned centre, mid and high are hard left/right with mid inverted. scrotum labs grille + radio music in use too for drum duties. Don't forget to use headphones!

[video][/video]

if anyone wants to hear the full 9min or so take it's on soundcloud (embedding won't work?)
http://www.soundcloud.com/dermo/bugbran ... dited-take

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batchas
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Post by batchas » Sat Jul 28, 2018 3:42 am

chrisdermo wrote:[video][/video]
Image

Listening with a big smile on my face :goo:

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lud
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Post by lud » Sat Jul 28, 2018 4:49 am

Thanks for the DDSR manual Tom, some great information and patch ideas in there. Loving the module, pure fun!

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chrisdermo
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Post by chrisdermo » Sat Jul 28, 2018 5:41 am

THanks batchas and lud! Going to try expand on these ideas soon and try find a way to alter the grille patterns in a controlled way - may just need to get more hands on with the knobs!

DDSR manual is superb, good to be reminded of things like clock division!
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Post by Vcoadsr » Mon Jul 30, 2018 11:08 am

Received my DDSR on Saturday - first play around yesterday, still trying to get my head around the lo/hi interactions between the two channels on each side.... but it really has opened up the synthvoice for me!

https://instagram.com/p/Bl0h7scjU_O/
Last edited by Vcoadsr on Wed Aug 29, 2018 10:56 am, edited 1 time in total.

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T. Jervell
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Post by T. Jervell » Wed Aug 01, 2018 2:03 am

chrisdermo wrote: [video][/video]
Very cool Chris! Now I’ve got GAS for the COFilter again.... :hihi:

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dogoftears
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Post by dogoftears » Sun Aug 05, 2018 2:51 pm

question
so the DA outputs are 0-10 v.
does the data input like to see a bipolar or unipolar signal to output a full range of values? i mostly feed it an oscillator, but maybe i should try a looping EG.
music and mastering: http://xexify.com
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BananaPlug
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Post by BananaPlug » Sun Aug 05, 2018 3:19 pm

The data inputs are just high or low. The exact level doesn't matter much, just whether it's over a threshold of (I'm guessing) about a volt. There's a somewhat de-cluttered diagram in the first post. "Comp" means "comparator."

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BugBrand
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Post by BugBrand » Sun Aug 05, 2018 3:38 pm

^^^Exactly.
& Data is only sampled when a clock event occurs - just samples low (below c.+1V) or high (above c.+1V)

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Re: DDSR

Post by /\/\/\/ » Mon Aug 06, 2018 9:23 am

BugBrand wrote: Each side has two Digital-to-Analogue circuits summing the step outputs to give stepped waveforms (0-10V). [one sums four of the steps, the other sums all eight - so each output gives different results]
I'm also wondering how the steps are summed...

Taking the output which sums 4 steps for example, how might the output look for various inputs? Is it simply 0, 2.5, 5.0, 7.5, 10 V?

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DickMarker
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Post by DickMarker » Thu Aug 16, 2018 7:05 am

That manual is great, really helps to breakdown what's going on in the DDSR - I started mucking around with the digital noise generation patch last night, lots of great tones to be had.

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BananaPlug
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Post by BananaPlug » Mon Aug 27, 2018 7:59 pm

The more I play with it the more impressed I am by the DDSR's ability to provide so many useful CV and gate outputs. Here's a post where without much fuss it runs three sound sources and manages to be pretty musical and non-boring.
:banana:

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fredguy
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Post by fredguy » Wed Sep 05, 2018 10:39 pm

DDSR fun with DRM and SEQ1 sequenced SYN2c.

http://soundcloud.com/fredguy-1/op-ed
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chrisdermo
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Post by chrisdermo » Thu Sep 06, 2018 1:55 pm

fredguy wrote:DDSR fun with DRM and SEQ1 sequenced SYN2c.

http://soundcloud.com/fredguy-1/op-ed
This is awesome! Have listened a few times now :tu:
WTB / WTTF: Bugbrand PRC2B, DD3, PRC4, ENV1

Current Bugs frame:
https://www.modulargrid.net/f/racks/view/580413

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chrisdermo
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Post by chrisdermo » Thu Sep 06, 2018 1:55 pm

BananaPlug wrote:The more I play with it the more impressed I am by the DDSR's ability to provide so many useful CV and gate outputs. Here's a post where without much fuss it runs three sound sources and manages to be pretty musical and non-boring.
:banana:
As is this! Thought I'd already expressed my enjoyment of this one but evidently not.
WTB / WTTF: Bugbrand PRC2B, DD3, PRC4, ENV1

Current Bugs frame:
https://www.modulargrid.net/f/racks/view/580413

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