General CV questions

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os
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Post by os » Mon Nov 19, 2018 1:19 pm

You could raise it to the maximum, and see if that has any effect.

To be clear, the issue we're going for is the parameters randomly resetting to zero.

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Post by apuzzone » Mon Nov 19, 2018 2:18 pm

os wrote:You could raise it to the maximum, and see if that has any effect.

To be clear, the issue we're going for is the parameters randomly resetting to zero.
Shepard mode, Manual Gate == 1, Live Edit == 1, L/R Outputs, no input:
as I set ADC to 255 I can hear total chaos - it sounds like all the MIDI instruments playing together. Any other value does not seem to make any difference regarding Program or Rate resetting to their minimum values. At some point in time, Program and Rate do reset.

It does sound thou, as 70 < ADC < 254 does have an effect on the "flammy" notes: some values make them more flammy, other values less flammy.
It does not seem to be tied to the numeric progression, that is, higher values do not all yield better results and so lower values.

It might be just a coincidence, but I have a feeling that moving any knob in Shepard mode might trigger some form of reset.

The display of Rate does reflect correctly its value even when it resets, but Program plays 0 (zero) even if the display shows another program.

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Post by elisha_gray » Sat Dec 08, 2018 3:23 pm

Hello, I must be missing an obvious clue!

I really like my new General CV with MIDI Breakout, but something odd happens when playing MIDI files.

I tried .mid files from two sources, kunstderfuge.com and midiworld.com. I erased the Micro SD card in between the two, and copied files to the card, with appropriate setlist.txt and playlist.txt files.

This is what works: Start with Free Playback mode. I can select any playlist and any file. I can listen to the polyphonic output on GCV L/R outputs. Also, one MIDI channel is driving my Moog Mother-32, using one 5-pin MIDI cable from GCV Breakout to Moog. This is awesome.

Here's the problem: For file numbers greater than zero, the file resets to zero, shortly after it starts playing. The only file I can listen to in its entirety is the first one.

Here's what I tried:

- GCV Misc -> Self-test. All okay.

- GCV Misc -> Zero offsets. Same problem happens.

- I tried variable 0-5 volts into GCV file input 4, and I can select a file by changing the voltage. Same problem happens.

- I tried constant 5 volts into GCV gate input 1. Same problem happens.

- I tried Clocked Playback mode, using my Disting Mk4 "B5" LFO as the clock. I can vary the playback speed, and it affects both the GCV L/R outputs and the MIDI output. Even more awesome. However, same problem happens. One thing I see in Clocked Playback mode, in the mode-specific display, I see "Next 0" pop up on the GCV display, before it switches back to file 0.

Edit to add: Firmware is 1.4.

What am I missing? Thanks!

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Post by os » Mon Dec 10, 2018 3:57 am

This sounds like it's another example of a more general problem of things jumping back to zero randomly.

I'm sure it can be fixed with a firmware update. I'm moving house this week but will make it a priority to fix once I have an office again!

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Post by elisha_gray » Mon Dec 10, 2018 5:52 am

os wrote:I'm sure it can be fixed with a firmware update.
Thanks, Os! Workaround is one file per playlist. I've got fifteen playlists now. So far so good.

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Post by c0ntr4d1ct10n » Sun Dec 16, 2018 10:57 am

I'm trying to set up the General CV to trigger samples from my Octatrack using CV. I don't think the Octatrack allows me to change the Midi Notes mapping, so I have to set it on the General CV - except I don't understand how the Notes A to D map to Midi Notes. The Octatrack is receiving Midi from the General CV (as it shows when a midi message is received), but it isn't receiving the correct note.

For example, on my Roland Keyboard, when I hook it up to the Octatrack, Notes C1, D1, E1 and F1 are mapped to Sample Trigs 9 to 12 on the Octatrack, which allows me to trigger the samples when play these notes on the keyboard. How do I map Input X to Note C1?

What do Notes A to D correspond to on a keyboard layout (which has notes A to G)?

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Post by os » Fri Dec 21, 2018 11:35 am

I'm assuming you're talking about Programmable mode on the General CV?

'Notes A to D' are four note *generators* not notes per se. The actual MIDI notes they generate are controlled by the CV input used by the generator.

You might find it easier to use the 'Drums 9' mode where you have 9 trigger inputs and you can easily define the note numbers to be sent via the parameters.

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Post by ignatius » Thu Dec 27, 2018 12:52 am

i got one of these a while ago and immediately used it in some patches and recordings.

gotta say.. this thing is just madness. and brilliant.

it's got some bugs as mentioned. .the parameters resetting to zero is doing my head in.

i get somewhere and poof it's gone. the granular mode is very tricky. i had some real glitchy weirdness going on and it went away entirely and i have no idea why. it became a sort of very GM sounding tone and then granular mode just decided not to work any more really. i don't know. i'm having a simliar experience in additive mode.

i know it's probably highly dependent on what sound i'm choosing as a source but even the default granular or additive setting aren't really changing the overall character of whatever GM sound i choose. i was getting very additive sounding things for a bit but it seems to not want to do that anymore. i try tweaking internal attack/decay/release settings to very different things but no luck. still just sounds like a GM tone.

i do have a rather nice chord going now though. chord mode is nice modular food for the Zdsp.

I'm sure there is some thing i'm overlooking. i have the manual in front of me and will go back through w/fresh eyes to see if i've somehow lost the plot.

I hope your house move went well... and you had a happy holiday.

i'm looking forward to whatever comes in future firmwares.

edit: ok.. additive mode seems highly dependent on the sound source. more than i thought. lot's of preset making to do!

still gotta figure out where i'm at w/the granular mode.

edit some weirdness with SD card and the onboard memory. last night i saved all to the SD card and today the contents of the SD card and the on board presets i'd saved were different.

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Post by Utopian » Mon Jan 07, 2019 2:43 pm

While talking about attenuation/offset, I would have liked to have an option for 0-10v for pitch (wich is what my Keystep is delivering). I wish I could use my presission adder for other stuff. I know I can also use the transpose settings, but that does not go far enough.

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Post by Utopian » Mon Jan 07, 2019 2:45 pm

Reposting this from the eurorack forum.

When using the midi breakout it, it seems like only the Shepart/Risset mode react to changing the program. The granular mode sometimes react to program change if it gets gate cv. All other modes is stuck on program 1 for midi input. I am using firmware 1.40.

Guess this is a bug.

What I want to do is to play chord progressions from midi sequencer, it may not be kosher but it is a super easy way to get chord progessions in eurorack when I need it!

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Post by os » Tue Jan 08, 2019 4:17 am

You might want to un-map the program change from the CV input that by default controls the program.

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MIDI Breakout weirdness

Post by apuzzone » Wed Jan 09, 2019 11:14 am

I purchased the MIDI Breakout and I am finding more bugs. Or I just do not know what to expect...
CV to Midi mode: I have a Gate signal applied to X, a CV applied to 4, MIDI out of the breakout to MIDI in of a Minibrute 2.
The General CV has Quantize == 1, Scale == Triad, and its output sounds fine, while the Minibrute 2 seems to play just random notes in a very low range...
To make things worse, when I change the Quantize Key in either direction from 0 (zero) the notes received by the Minibrute 2 become even more random, and the pattern played is never the same for same values of the Quantize key. Meaning that if I hear a pattern with Quantize Key == 0, then set it to -1, then back to zero, the notes played by the Minibrute 2 differ from the previous pattern when on 0. After fiddling back and forth for a while with the Quantize key... all of a sudden the Minibrute 2 starts to play the same notes played by the General CV.
This to me shows a general issue in the module: most times, the values displayed on screen do not reflect the current state of the module. And it seems that the module put itself in some funky state, more often than not, that requires fiddling at random with the different setting values, until things start to work as expected

Can you please address all these issues? I am spending more time trying to understand what is going on, than playing....

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Post by Utopian » Wed Jan 09, 2019 12:33 pm

os wrote:You might want to un-map the program change from the CV input that by default controls the program.
Tried to do this to no avail, the program setting still does not affect the midi input, only the CV input. Unmapping only affects the cv-voice. I can still change the program via the knob, but CV into 1 does not change the program anymore. It has no effect on the midi input, it is still stuck in program 1.

As mentioned, the Shepard/Risset mode works as expected.

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Post by os » Thu Jan 10, 2019 7:48 am

@apuzzone I can't reproduce any issues like that. I just set up exactly what you described and monitored the MIDI coming out of the GCV. For example here's Quantizer=1, Scale=Triad, Key=D(2):

Code: Select all

12&#58;39&#58;00.447	From DIN 1	Note On	1	D0	64
12&#58;39&#58;00.513	From DIN 1	Note Off	1	D0	64
12&#58;39&#58;00.574	From DIN 1	Note On	1	A0	64
12&#58;39&#58;00.640	From DIN 1	Note Off	1	A0	64
12&#58;39&#58;00.700	From DIN 1	Note On	1	A1	64
12&#58;39&#58;00.767	From DIN 1	Note Off	1	A1	64
12&#58;39&#58;00.827	From DIN 1	Note On	1	F#2	64
12&#58;39&#58;00.893	From DIN 1	Note Off	1	F#2	64
12&#58;39&#58;00.955	From DIN 1	Note On	1	D3	64
12&#58;39&#58;01.021	From DIN 1	Note Off	1	D3	64
12&#58;39&#58;01.081	From DIN 1	Note On	1	D4	64
12&#58;39&#58;01.147	From DIN 1	Note Off	1	D4	64
12&#58;39&#58;01.207	From DIN 1	Note On	1	A4	64
12&#58;39&#58;01.274	From DIN 1	Note Off	1	A4	64
12&#58;39&#58;01.334	From DIN 1	Note On	1	F#5	64
12&#58;39&#58;01.400	From DIN 1	Note Off	1	F#5	64
12&#58;39&#58;01.461	From DIN 1	Note On	1	F#6	64
12&#58;39&#58;01.527	From DIN 1	Note Off	1	F#6	64
12&#58;39&#58;01.587	From DIN 1	Note On	1	D7	64
12&#58;39&#58;01.654	From DIN 1	Note Off	1	D7	64
12&#58;39&#58;01.715	From DIN 1	Note On	1	F#7	64
12&#58;39&#58;01.782	From DIN 1	Note Off	1	F#7	64
12&#58;39&#58;01.841	From DIN 1	Note On	1	A6	64
12&#58;39&#58;01.908	From DIN 1	Note Off	1	A6	64
12&#58;39&#58;01.968	From DIN 1	Note On	1	A5	64
12&#58;39&#58;02.034	From DIN 1	Note Off	1	A5	64
12&#58;39&#58;02.095	From DIN 1	Note On	1	D5	64
12&#58;39&#58;02.161	From DIN 1	Note Off	1	D5	64
12&#58;39&#58;02.221	From DIN 1	Note On	1	D4	64
12&#58;39&#58;02.288	From DIN 1	Note Off	1	D4	64
Perhaps you have a problem with your MIDI connection?

@Utopian MIDI program change is working for me. I just set up the GCV with the breakout, getting MIDI from Live. GCV has default settings (CV/MIDI mode). I set up two clips in Live playing chords, each with a program change setting. Switching between clips in Live plays the chords and sets the correct program each time.

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Post by Utopian » Thu Jan 10, 2019 9:17 am

My expectations may very well be wrong, but what I am trying to do is play cords from my Keystep via midi to GCV and then select program via the GCV menu. I have very limited knowledge on the midi protocol, but I guess Keystep is sending program 1 codes which is not overridden by GCV? Is there a reason that only S/R-mode let me override program using the menu?

Well, this research has given me some really crazy fun with midi cords and CV control of program and other parameters in S/R-mode!

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Post by ignatius » Thu Jan 10, 2019 1:39 pm

is there an update coming soon to sort out the randomly resetting parameters bug where stuff returns to zero on its own?

it makes it really challenging to use general CV when my parameter changes are undone and i have to chase them down and start over and keep my fingers crossed.

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Post by os » Fri Jan 11, 2019 4:46 am

My expectations may very well be wrong, but what I am trying to do is play cords from my Keystep via midi to GCV and then select program via the GCV menu. I have very limited knowledge on the midi protocol, but I guess Keystep is sending program 1 codes which is not overridden by GCV? Is there a reason that only S/R-mode let me override program using the menu?
I just checked and it turns out the CV/MIDI mode only sends the program changes from its parameter when a new note is triggered. So MIDI notes coming from the breakout will bypass that, and the program change won't take effect.

If you use the Chord mode then it will behave as you expect.
is there an update coming soon to sort out the randomly resetting parameters bug where stuff returns to zero on its own?
Yes, that's very high on my priority list now.

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Post by apuzzone » Fri Jan 11, 2019 10:04 am

os wrote:@apuzzone I can't reproduce any issues like that. I just set up exactly what you described and monitored the MIDI coming out of the GCV. For example here's Quantizer=1, Scale=Triad, Key=D(2):

Code: Select all

12&#58;39&#58;00.447	From DIN 1	Note On	1	D0	64
12&#58;39&#58;00.513	From DIN 1	Note Off	1	D0	64
12&#58;39&#58;00.574	From DIN 1	Note On	1	A0	64
12&#58;39&#58;00.640	From DIN 1	Note Off	1	A0	64
12&#58;39&#58;00.700	From DIN 1	Note On	1	A1	64
12&#58;39&#58;00.767	From DIN 1	Note Off	1	A1	64
12&#58;39&#58;00.827	From DIN 1	Note On	1	F#2	64
12&#58;39&#58;00.893	From DIN 1	Note Off	1	F#2	64
12&#58;39&#58;00.955	From DIN 1	Note On	1	D3	64
12&#58;39&#58;01.021	From DIN 1	Note Off	1	D3	64
12&#58;39&#58;01.081	From DIN 1	Note On	1	D4	64
12&#58;39&#58;01.147	From DIN 1	Note Off	1	D4	64
12&#58;39&#58;01.207	From DIN 1	Note On	1	A4	64
12&#58;39&#58;01.274	From DIN 1	Note Off	1	A4	64
12&#58;39&#58;01.334	From DIN 1	Note On	1	F#5	64
12&#58;39&#58;01.400	From DIN 1	Note Off	1	F#5	64
12&#58;39&#58;01.461	From DIN 1	Note On	1	F#6	64
12&#58;39&#58;01.527	From DIN 1	Note Off	1	F#6	64
12&#58;39&#58;01.587	From DIN 1	Note On	1	D7	64
12&#58;39&#58;01.654	From DIN 1	Note Off	1	D7	64
12&#58;39&#58;01.715	From DIN 1	Note On	1	F#7	64
12&#58;39&#58;01.782	From DIN 1	Note Off	1	F#7	64
12&#58;39&#58;01.841	From DIN 1	Note On	1	A6	64
12&#58;39&#58;01.908	From DIN 1	Note Off	1	A6	64
12&#58;39&#58;01.968	From DIN 1	Note On	1	A5	64
12&#58;39&#58;02.034	From DIN 1	Note Off	1	A5	64
12&#58;39&#58;02.095	From DIN 1	Note On	1	D5	64
12&#58;39&#58;02.161	From DIN 1	Note Off	1	D5	64
12&#58;39&#58;02.221	From DIN 1	Note On	1	D4	64
12&#58;39&#58;02.288	From DIN 1	Note Off	1	D4	64
Perhaps you have a problem with your MIDI connection?
I ran a few more tests, which I admit I should have run before, and found a potential root of the issue I am seeing, in the order the devices involved get switched on. If I switch on the Microbrute 2 first, then the General CV, the Microbrute will end up playing strange notes. If I switch on the General CV first, then the Microbrute, everything seems to work as expected.
I have not had the time to swap the Microbrute with another synth to see if the result is the same, but I have a hunch.
Can you please test on your side the MIDI output of the General CV as you switch it on? I have a feeling that there is a MIDI message sent at power on that puts the Microbrute into an "agitated" state :)

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Post by os » Fri Jan 11, 2019 10:11 am

The General CV will send out a lot of Program Change and CC messages at startup, or indeed when changing mode or preset.

You can control this to some extent with the 'output MIDI' menu, storing a preset and setting it as the default initial preset.

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Post by ignatius » Fri Jan 11, 2019 3:26 pm

thanks OS. btw the lego NASA stuff looks fun. :tu:

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Post by matheuwatson » Sat Jan 12, 2019 5:41 am

Hi there folks, hope you are well out there. Wondered can the General CV do CV controlled panning? thanks!

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Post by os » Mon Jan 14, 2019 8:13 am

ignatius wrote:is there an update coming soon to sort out the randomly resetting parameters bug where stuff returns to zero on its own?
If anyone is struggling with this and would be able to help diagnose the issue by running some debug firmware, please drop me an email.

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program morphing

Post by emilng » Mon Jan 14, 2019 9:03 am

I'm loving this module so far.

Would it be possible to add wavetable-like functionality to this module by having a different program on each midi channel and adjusting the relative volume on each channel?

I'm thinking of something like the Shepard/Risset mode but rather than morphing between a single program with different tones it would be morphing between different programs.

In lieu of having this built in I'm wondering if I could get the same results in programmable mode if I have note and gate going to all 4 channels and 4 separate CVs controlling CC 7 (volume) and hooking something like http://www.doepfer.de/a144.htm (Doepfer A-144 Morphing Controller) to allow a single CV to morph between the programs.

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Post by os » Mon Jan 14, 2019 9:10 am

That's actually something I was planning to try myself! Seems possible to put it together in programmable mode - let us know if you do it.

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Post by elisha_gray » Thu Jan 17, 2019 6:02 pm

elisha_gray wrote:I really like my new General CV with MIDI Breakout, but something odd happens when playing MIDI files.
Following up on my complaint about the "reset to zero" problem.

Os is working on a solution. I've been playing a small role by running some experiments for him on my General CV.

One of the experiments is my new temporary workaround.

I use General CV Free Playback mode a lot, and Clocked Playback mode occasionally, with a MIDI breakout.

Both of these modes are hit by the "reset to zero" problem. In this case, for the MIDI file in the current playlist, which is chosen either by the D encoder or by CV input 4. The file number, 0 to 31, keeps resetting to zero.

The temporary workaround for these two modes is to disable CV input 4.

Now with CV input 4 disabled, when I select a file in the playlist (with D encoder), the General CV stays on that file -- even with "ADC Tune" at the default setting of 70. No resets in several hours.

I think this idea might work for other modes, as well, but I don't know which input(s) would be the problem in other modes.

Here's my cheat sheet, for firmware version 1.4:

1. Mode -> Free Playback (wouldn't hurt to start a tune playing)
2. Mappings -> Edit
3. Turn A encoder so screen says A:4 (this would be the "mapping slot" for input 4)
4. Turn D encoder so screen says D:22<none> (an unused setting)
5. Press A encoder to Enter the setting
See page 59 of the manual for more info.

Here's how to go back to default, assuming that this was your only mapping change:

1. Mode -> Free Playback
2. Mappings -> Reset to Defaults; it will ask "are you sure;" press A again

Hope this helps somebody.

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