Search found 326 matches

by tardishead
Tue Oct 13, 2020 5:34 am
Forum: Modular Synth General Discussion
Topic: Self generating patches....tips and ideas ?
Replies: 892
Views: 121633

Re: Self generating patches....tips and ideas ?

gis_sweden wrote:
Fri Oct 09, 2020 8:27 am
VCV-rack 5 cell Quantussy. Cant do them on my modular anymore. I have sold some CVLFOs and S/Hs.
https://freesound.org/people/gis_sweden/sounds/538718/
Ooooooh yeh - I like that
by tardishead
Thu Oct 08, 2020 8:33 am
Forum: Music Tech DIY
Topic: DC coupled digital delay
Replies: 24
Views: 546

Re: DC coupled digital delay

I have 2 Ornament and Crime modules
My friend said why don't we remove a couple of apps and program a new one. We can use the 4 DACs to produce 4 delayed envelopes with random Delay Time
Do you think that would be feasible
by tardishead
Thu Oct 08, 2020 2:41 am
Forum: Music Tech DIY
Topic: DC coupled digital delay
Replies: 24
Views: 546

Re: DC coupled digital delay

was it with a particular library that you wouldnt be able to read from multiple ADCs? the teensy3.6 has 25 ADCs and 2 DACs. you should be able to interleave readings just fine. the only trick will be to ensure a consistent sample rate on the envelope ADCs. Ah yes. It was an audio development librar...
by tardishead
Tue Oct 06, 2020 2:54 pm
Forum: Music Tech DIY
Topic: DC coupled digital delay
Replies: 24
Views: 546

Re: DC coupled digital delay

So I had a look into Teensy As I understand it for a 2 channel design I won't be able to use extra Analog Read for values of Delay Rate CV and potentiometer when I am recording into the ADC. I can use ADC0 for the input CV and ADC1 for CV/potentiometer. Otherwise to record 2 channels and sample 2 mo...
by tardishead
Sun Oct 04, 2020 6:31 am
Forum: Music Tech DIY
Topic: DC coupled digital delay
Replies: 24
Views: 546

Re: DC coupled digital delay

OK thanks for the info. I've never looked into micro controllers so please forgive my ignorance. If I use a Teensy with 2 ADC and 2 DAC - I could get 2 independent DC delay units ? If I use standard 0-5v envelopes scaling would be quite simple. But scaling of bipolar CV for the Delay Time would be a...
by tardishead
Fri Oct 02, 2020 2:18 pm
Forum: Music Tech DIY
Topic: DC coupled digital delay
Replies: 24
Views: 546

Re: DC coupled digital delay

guest wrote:
Fri Oct 02, 2020 9:25 am
the pt2399 is digital inside. you could either replicate that with your own circuits, or use a BBD chip. it would be pretty easy to make your own sigma delta delay with an opamp and memory IC. whats the max delay time you want?
With CV control of delay time?
Can BBD chips go down to DC?
by tardishead
Fri Oct 02, 2020 2:17 pm
Forum: Music Tech DIY
Topic: DC coupled digital delay
Replies: 24
Views: 546

Re: DC coupled digital delay

MikeDB wrote:
Fri Oct 02, 2020 5:03 am
Wouldn't it be simpler to delay both signals using the ADCs and DACs of an STM32F103 Blue Pill that costs about £1.50 ?
Yeh I think you're right. Ive never played with digital stuff before but it looks like nows the time
by tardishead
Fri Oct 02, 2020 4:16 am
Forum: Music Tech DIY
Topic: DC coupled digital delay
Replies: 24
Views: 546

Re: DC coupled digital delay

Ok thanks anyway
I can do what I want with the modules I have but I wanted to do it with one dedicated module. Preferably a twin unit in a 1mu space
by tardishead
Thu Oct 01, 2020 3:45 pm
Forum: Music Tech DIY
Topic: DC coupled digital delay
Replies: 24
Views: 546

Re: DC coupled digital delay

Great - thanks very much. I noticed on the data sheet it shows about 30ms being the shortest recommended time (at least on start up) Can it go much shorter than 30ms? Any adverse effects? I was hoping to go as short as 5ms. And 30ms being long. I want to use it to double up very fast rhythmic envelo...
by tardishead
Thu Oct 01, 2020 5:21 am
Forum: Music Tech DIY
Topic: DC coupled digital delay
Replies: 24
Views: 546

Re: DC coupled digital delay

Can you share your schematic?
by tardishead
Wed Sep 30, 2020 1:24 pm
Forum: Music Tech DIY
Topic: DC coupled digital delay
Replies: 24
Views: 546

Re: DC coupled digital delay

Yes, I built a DC coupled PT2399 recently. I was thinking more in terms of delaying a frequency control voltage. The problem I had was that the gain was not quite constant as the delay varied, so I couldn't calibrate it so that the output exactly matched the input. The other problem is that if you ...
by tardishead
Wed Sep 30, 2020 8:00 am
Forum: Music Tech DIY
Topic: DC coupled digital delay
Replies: 24
Views: 546

DC coupled digital delay

I would like a circuit whereby I can delay a CV for example a fast envelope with CV control of the delay time
Can the PT2399 be DC coupled? Is it worth experimenting with?
Or does anyone have any other ideas of where to start?
by tardishead
Mon Sep 07, 2020 6:56 am
Forum: 5U Format Modules
Topic: I made a 5u Matrix Mixer
Replies: 35
Views: 885

Re: I made a 5u Matrix Mixer

It is I who made the panel
:party:
by tardishead
Fri Aug 14, 2020 3:24 am
Forum: Synthesis Techniques
Topic: AM Synthesis
Replies: 4
Views: 564

Re: AM Synthesis

dragulasbruder wrote:
Wed Aug 05, 2020 10:13 am


Amazing - never heard of this guy. Really inspiring
by tardishead
Wed Jul 15, 2020 11:46 am
Forum: 5U Format Modules
Topic: One of those secret projectsZzzzzzz
Replies: 21
Views: 1809

Re: One of those secret projectsZzzzzzz

Really nice
Really Kraut and not just pastiche
Loving it
by tardishead
Mon Jul 06, 2020 5:15 am
Forum: Music Tech DIY
Topic: 8/16 Step CGS Programmer
Replies: 6
Views: 206

Re: 8/16 Step CGS Programmer

Yes I built them at the same time
I did use 2n39.. transistors in stead of the BC types but I don’t see how that would make a difference
Would voltage followers help?
by tardishead
Mon Jul 06, 2020 3:53 am
Forum: Music Tech DIY
Topic: 8/16 Step CGS Programmer
Replies: 6
Views: 206

Re: 8/16 Step CGS Programmer

In 1x16 mode only the master current source is enabled via the switch
by tardishead
Mon Jul 06, 2020 2:18 am
Forum: Music Tech DIY
Topic: 8/16 Step CGS Programmer
Replies: 6
Views: 206

Re: 8/16 Step CGS Programmer

Bump
by tardishead
Sun Jul 05, 2020 5:55 pm
Forum: Music Tech DIY
Topic: 8/16 Step CGS Programmer
Replies: 6
Views: 206

8/16 Step CGS Programmer

I'm a big fan of this circuit I built one 16 step programmer over 15 years ago and I wanted to build another 2x8 that could be switched to 1x16 I built the 2 modules which work great on their own but then I tried to combine them via a 14p 2t switch. I have used Molex crimp connectors to connect the ...
by tardishead
Sat Jul 04, 2020 4:11 am
Forum: Modular Synth General Discussion
Topic: FM and bells, chimes, metallic tuned instruments
Replies: 8
Views: 462

FM and bells, chimes, metallic tuned instruments

I'm familiar with the idea of using FM to create bells and chimes but wondered how to create something more sophisticated. Say a vibraphone,Marimba, Kalimba or Glockenspiel. Is there any rule of thumb when designing intervals for the 2 FM frequencies? And sometimes FM would not necessarily be involv...
by tardishead
Wed Jun 10, 2020 2:46 pm
Forum: Modular Synth General Discussion
Topic: Strings and saw waves
Replies: 96
Views: 4525

Re: Strings and saw waves

Ah I wrote my reply onto an older version of the thread That graph is very different hey! But it must be weighted differently? I mean if you play the lowest note on a violin it does not sound bass and boomy and has a lot of higher frequencies. But anyway the comb like effect is very interesting. I'm...
by tardishead
Wed Jun 10, 2020 1:24 am
Forum: Modular Synth General Discussion
Topic: Strings and saw waves
Replies: 96
Views: 4525

Re: Strings and saw waves

FWIW Checked my save on the 296e and my jump off point had the 300Hz and 700Hz peaks at around -6db and 0db respectively with sharp cuts in between (-30 to -60 dB). The ramp up to 2khz to 4 kHz maxed out at prob between +4 to +7db. Those measures rely on the accuracy of the 296e’s vertical scale, a...
by tardishead
Tue Jun 09, 2020 5:32 pm
Forum: Modular Synth General Discussion
Topic: Strings and saw waves
Replies: 96
Views: 4525

Re: Strings and saw waves

It also did get me wondering whether some form of spectral transfer between an actual violin sample and the oscillator stack would be helpful? Probably cheating though at that point :wink: Well that would be awesome because the amplitude axis on the Sound On Sound figure has no scale. I could not s...
by tardishead
Sun Jun 07, 2020 2:58 am
Forum: Modular Synth General Discussion
Topic: Strings and saw waves
Replies: 96
Views: 4525

Re: Strings and saw waves

I'm intrigued by Fricko's mention of the resonant peaks of classic violins. But approx how strong are these peaks 3db? Sound on Sound had this figure for response of violin https://dt7v1i9vyp3mf.cloudfront.net/styles/news_large/s3/imagelibrary/f/fig02boverallvspectrum-BDMpiVRJsJss_KAKUxyj4NqPvS3WeXz...

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