SMC Joono

[Acrobat]

search the friendly forum for "enhanced knob with full midi control" #-)

wow that's great big work, thanks, do you think I will need to add the checksum for Roland devices or it will work just applying sysex values from the original manual?

[rl]

Ma, sicuramente.
I think without checksum the Roland device would reject any sys-ex message.

[trogluddite]

The thread HERE has some exmple schematics for calculating Roland checksums.

[Acrobat]

The thread HERE has some exmple schematics for calculating Roland checksums.

thanks guys

[Acrobat]

I put aside calculating Roland checksums, which I found very difficult for me, never experienced that, I preferred applying on the main engine recovering the work of past years in a new .OSM, V1.1 compliant (not 2.0 pleeese I still don''t own it).
I'll try to understand sysex if I have some spare time in the next weeks, anyway I isolated these useful pages:

MIDI_Pages.pdf

(336.46 KiB) Downloaded 122 times

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Recovered LowPass filter, Chorus and PULSE3/SAW3 oscillator modules, then integrated with my wavetable work,
so here is the state of work at the moment (no MSE envelope still, it using a standard one, ATM):

Joono_2011_alpha_023a.osm

(185.32 KiB) Downloaded 165 times

[Acrobat]

Some improvements:

Joono_2011_alpha_024a.osm

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Notes inside the .OSM

Any tips, advices? I'm all alone at the moment, this gonna be kool revive, believe me,
especially if someone can help on the sysex import side...
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I found this:
http://www.kvraudio.com/get/4296.html
and it seems to work well, but it's payware. He disabled the filter section sysex output. There's no patch management.
I need free help, I guess I can link two PCs in-out by MIDI to catch the sysex patterns spitting out of that babe, may-be.
Hacky.

[Acrobat]

Working on the GUI, I opted for a sliding programmer and
carefully reproduced the original machine colors, still unfinished but
this is a VST rendering w/the new user interface, give it a go:

SMC Joono 2012.rar

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EDIT: Smaller, thinner, lighter, tighter graphix,
also some small improvements on the tech side (LFO filter modulation width is correct now):
V70 (Christmas Version) -

SMC_Joono_2012_v70.rar

V70 21 december 2011

(1.71 MiB) Downloaded 207 times

[Acrobat]

I took this six years old message to retrieve the old situation and compare if I'm doing right:

OK I actually got a little bit done, Not enough so you can listen though
Some of the modules are in the wrong order for instance the VCA goes after the Filters in the signal chain.
The DCO ranger needs sorting and intergrating into the DCO Module.
Im not sure how to achieve the different shapes needed possibly waveshaping ?
I will post pics of the needed shapes from the Owners Manual of the J2 later.
The Envelope is temporary until we can create a 8 segment Time Level type of envelope .
(...)
EDIT* On second glance at the picture above i think the DCO needs an ENV mode aswell, I will check in the manual (Which i was lucky enough to find in the loft)

Well I go point for point:

-VCA stage on the circuit board is actually located between the LPF 6-voices filtering stage and the HPF/Chorus stage, because the HighPass processing is performed on the whole signal, not voice per voice, proof is the HPF is selectable via switch modes in a typical configuration on analog synthesizers, it came to my attention looking carefully at the original block diagram:

block_diagram.pdf

(202.98 KiB) Downloaded 138 times

-I've done the proper DCO ranges sorting and all about that, and an additional check to the minimum/maximum rates will be performed in comparison with a real machine, after completing of the programmer and presets management scheme which is still under development...

-No need for waveshaping I think, I provided the fixed waves with the sampling/wavetabling work, just the PWM shapes are incorrect at the moment, being too exact, too DIGITAL and set very bad apart from the WT oscillation.
Needs fixing of course, I was thinking of adding a low sine or saw/something to the PWM shapes. If you have ideas here, please contribute.

-Well for "8 segments" I think NAS meant "8 values", being L-x and T-x doubled for each stage. Actually the original one is practically a 7 values/5 stages envelope.
I'm actually implementing a variation of the multistage SM envelope to be adapted for the purpose. I'm blocking the curves to resamble the original ones and setting times and amplitudes, another prototype is coming in days with better graphics and interface from v70 too.

See ya soon!
ciao ciao
Andrea

PS: add the provided font to your Windows Fonts folder if you want a realistic LCD display...
and thanks to AM for the display cells!

graphicpixel.zip

(4.73 KiB) Downloaded 177 times

[Acrobat]

First try for the MEnvelope adaption - start to roar like it should:

SMC_Joono_2012_v80.rar

.DLL VSTi plugin Version 80 - uses graphicpixel font

(1.48 MiB) Downloaded 829 times

[Nu Audio Science]

If this is based on our original work, please post the OSM for others to learn from
Thanks

[lenoxproject]

Hey,what happen to this great synth?Will there be more to come?

Thank you

[trogluddite]

Hey,what happen to this great synth?Will there be more to come?

Thank you

Took you three hours to come up with that as your first post: "Rub salt in wounds."

Damn, I resigned as a moderator. That is the very lowest order of trolling, hope it gave you a kick.

[trogluddite]

There is a Pm on it's way to the earlier poster.
I am a bit up tight at the moment, and as most of you know, I would not normally be so rude.
There has been bad news on the forum, and I let my standards slip in the heat of the moment (I edited my post because I used some rude words).
it is possible that I got the wrong end of the stick. I stand by my statement IF the poster was a troller, but if my rash judgement was mitaken, then I apologise for venting my anger on the wrong person.

[Acrobat]

alphapost.png (9.05 KiB) Viewed 3036 times

Yes, this is still going: below you’ll find a download link with multi-envelope implementation, if you get the picture, we need severe reduction here and there, please help on that, if you can. Here follows some precious informations on the original machine I collected recently...

PG_arrange.png (43.83 KiB) Viewed 3043 times

Filter uses the same VCF+VCA chip IR3R05 used in JX series, appears to be a cascaded 12dB+12dB one from the c4 pin connected to the VCA input, described as LPF+LPF, although AlphaJuno service manual contradict MKS-50 manual, stating that it is a LPF+BPF. Anyway the SM SVF model seems to be much competent here, I’m revisiting the actual settings to match new informations. HPF boost in position 0 is around 100-150 Hz, the implementation is still a to-do for all 4 positions, I guess I’ll use a RBJ notch with 4 different settings, if it is available in my library.

Chorus uses Panasonic MN3009 BBD bucket brigade, a short delay adjustable from 0.6 to 12.8 milliseconds, where different settings are used for left and right channels, then being modulated by a single triangular LFO with variable speed (user control) than is inverted for one of the channels. Although the schematic says the chorusing represents the last stage of signal flow, some competent people say the chorus is placed between the HPF filter (mono) and the VCAs (stereo), it can be eventually confirmed by the fact that certained settings of the synhesizer overload VCAs when the chorus is in use. We don’t have informations about feedback amount or actual routing in any case, feedback setting will be choose at ear.

Actually Chorus algo was the only part left from original SMF project, but I’m about to cut it all and build a new one from scratch, fitting the indications above. This mught answer to Nixie question too, there’s no more older parts in the project, I’ll give it to the public when completed, certainly not during workflow to avoid unauthorised stupid commercializations. Consider that I still use SM V1, so intercompatibility with 2.0 or SM3 IS a problem. Feel free to contribute here or via private massages, expecially with ideas for the multistage enveloping posted or any useful sysex informations,
thanks,
Andrea

Joono_2012_envelope.osm

(23.95 KiB) Downloaded 83 times

[Acrobat]

version beta 93 - 20 october 2012

SMF_Joono_2012_beta_93.rar

(1.49 MiB) Downloaded 159 times