synthesizer kx modular system 1

stylus02

i did facelift an added copyright info. yes it was recompiled. mm.. you get the project files.. mom

http://freenet-homepage.de/stylish-s...20_1.0_vc6.zip

i installed the 3541 sdk only. then i took the demo workspace and deleted
demo.cpp, demo.h, simple.h and puted in kxm120.cp, kxm120.h, simple.cpp (kxm120).
maybe this don't work. i have no chance to test it.

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Russ

Hehe, its your plugin, you do not need to give me the project files when you make changes, etc. For that matter, you do not need to add my name to it, etc, just a thanks for the help is fine

Just remember that when compiling for 3539 or later, to set the active config to the Release build. (in VC6, Build -> Active Configuration -> Win32 Release)

You can just use the workspace from the project files I sent you, as they were from 3541 anyway. There is no need to use anything from the demo plugin folder with that workspace.

i.e.
Make new folder in the SDK 3541 folder.
Add my project files.
Replace kxm120.h, kxm120.cpp, and da_kxm120.cpp with your updated versions.
Open the workspace.
Set the Active config to Win32 Release.
Build the plugin (resulting .kxl will be in the Release folder).

stylus02

can you compile it for 3541 and send me? so can i can make a link on it.
the 3541 is compatible to 3540, 3539? (seen on your website) > this could be the best solution right now.
the configuration setting in vc6 and all this crazy stuff i'll test later.
the copyrights are correct for the moment. the important things were added by you.

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Russ

OK. Send me a PM with your email address, so I can just email it to you, rather than having to upload it to my web site, etc (if that is OK with you).

And yes, I think that it should be compatible with 3540/3539 (since 3539 plugins are compatible with 3540/3541).

stylus02

files updated. i really hope it's done.

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Russ

Here is something I have been playing around with, using kxm for the synth sounds:
Temp link: kX Stuff 2

stylus02

mm.. very nice sequence. are all the sounds generated with the modular?

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Russ

Thanks,
The guitar and drums are not from kxm, but the rest is.

stylus02

added to the examples list. do i hear the microwah-wah too?

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Russ

No microwah, what you hear is probably the envelope of the kxm510 modulated by the kxm700.

stylus02

yes that's funny, because the same algoritms.

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JGSF

This is great stuff! Thanks.

Just one suggestion:

How about giving the modules a more familiar name, ie: 100 - 3octv. MidiKeyb? I think it would be more intuitive when choosing them from the menu.

stylus02

well, i took the designation because it was short and clearly in the dsp window. remember, the moog- modules also had these short designations.

you can simply rename modules by rightclicking on it and choose "rename".

stylus

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JGSF

Yes, you're right, we can always rename them in the dsp.

I didn't know the moog modules used the same naming approach though.

Max M.

btw., i'm finishing a modified (for "semi-logarithmic" attack) and optimized version of the "adsr" - may i name it "kxm403"?

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Max M.

Never mind. Here we are then
This is an ADSR envelope generator compatible with "kx modular system": kxm403.da
It has a "semi-logarithmic" attack (more specifically "inverse-square" one, as in '2*x-x^2') and exponential decay/release curves (as i recently mentioned here) - like this.

A non-optimized (e.g. more readable) code for a sort-of-reference is also available (kxm403.readable.da)

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stylus02

11 registers- that's great. you use a parabola form for smooth curves. one must have ideas. i found out in some tests that the logaritmic interpolation was better on higher exponents, but i got no usable slope times. i think we now we have the best solution in a dane source.

kxm403 sounds good feel free by naming it so long a number is not in use.
(there are enough numbers in a category kxm4xx - envelopes)

stylus

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Max M.

not exactly. i use log instruction only to convert the fader control value to filter (see below) coefficients. The exponential curve is a result of applying an integration filter (basically it's the same thing as the "one interp LPF") - there're no exp/log instructions in curve generators themselves.

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stylus02

"i see you use logaritmic function with maximum exponent "1f" for smooth curves." - that was my confusion.
i should read better before i answer

stylus

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Lex Nahumury

Stylus,

I haven't been able to test your modulair synth earlier hence this late reaction.

Your Allias-free oscilator module kxm210 produces incorrect pitch intervals.
It's most notable in the upper octaves but it happens in the lower octaves as well.
Basicly it produces out of tune pitches due to the algorithme you used.
The 'limit' approach in the saw generation introduces errors in pitch.
The alternative MACW wraparound approach has good pitch but unfortunatly produces
the well known AA effects.
I hope you'll be able to fix this since this is a 'biggy' (well, at least to me it is).


Also, you may put some 'parameter smoothers' on the RealTime controls like Fcutt etc. to
get rid of those annoying zipper noises when you move a slider.
A simple 'interp lowpass' on crucial parameters will do the trick.

The keyboard module kxm120 may work OK for sequencer playback,
but for Realtime keyboard playing it's unusable.
The Note schedulair scheme is too simple.

ADSR response doesn't feel/sound 'natural'. The ADSR code Max recently gave you will
probably work a lot better.

At last, I hope you master C/C++ soon and move all those parameter calculations out of
DSP microcode. That would save a huge amount of DSP resources and gives you better programming options.
Also ,that way you could Publish all those 20+ in one big swoop instead of letting user do 20+*2 mouseclicks to register all those plugs

Just some ideas. Keep up the good work!

Cheers,

/Lex.

stylus02

hi lex, thanks for spending some time on testing the modular. your ideas cover the problems i see too.
- mainly the keyboard unit needs a sort- algoritm to play notes correctly after "note-off's" are recieved. i thought about an array which saves a number of
notes, sort and give back the highest note/last note is pressed.
- the oscillalator "less aliasing" effect was a fortuity after using test- command "limitn" as you have figured out. other test- commands (tstneg, skip..) generated the effect too. i had no really explanation on it. the detune is small, let's say it feels analog, historic.
- max's adsr is really great.
- parameter smoothing, register/unregister script - good ideas

what affects on vc++6: for me the "win32 debug build" with 3538 works. no idea why "win32 release build" won't work: dll's, vc++6 installation (not original cd)? for compiling the 3539 (and upper) someone off you kx- users could do this.

stylus

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Lex Nahumury

yes, simply maintain a note_on buffer and kick notes from it when you recieve the corresponding note_off.
If buffer not empty, play highest note in buffer etc. etc.
Well, easy to do in C/C++.

Sorry, I don't agree. Higher notes are severly out of tune!
Very unproffessional unless you have very low standards.
I'm pretty sure a Nordlead (or any free VST synth for that matter) does not suffer
from such bad design

Producing Aliasing free waveforms like saw, square etc in DSP is next to impossible in emu10kx.
Perhaps Max might have some tricks left, but in this case I doubt it.
(although you never know with Max. That is one "clever cat")

Anyway, the best I could come up with is using sinewaves to 'construct' the waveform.
The saw osc in ASynth has perfect pitch and is almost alias free.
Here's what I do;

sine_osc -> abs(sine) -> hp filter

Now you have alias free saw approximation.
Here's the microcode;
Something similair should work for square too but I havent figured out how
back then when I was making Asynth.
The portamento stage is of course not part of the osc but I left it in as a bonus.

Cheers.

PS: EDIT:
I just remembered, idealy the HP filter cuttoff should be tracking with the osc freq instead of a fixed cuttof. That way the saw amplitude remains constant.
Hmm,..I can't remember why I didn'd do that in my synth.

stylus02

i never had running my oscillators with other synths, so the detune never was really noticed.

the saw oscillator i'll check as soon as i got time. i remember on doing a fourier sythesis saw oscillator with several sinoid oscillators. it took much registers and was unusable.
btw: using polyphonic soundfont oscillator with a midi true connection is another great possibility to feed the synth.

stylus

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Lex Nahumury

Note: I edited my previous post.

stylus02

2 new nice classic modules for the modular. kxm 530 is a 8 band fixed filter bank for tweaking synthesizer sound formants. use it with noise source for your surprise! (preferably pink noise) kxm 920 is a spring reverb with fixed attributes. i really like this odd sound.

http://freenet-homepage.de/stylish-stylus/kxm_530.da
http://freenet-homepage.de/stylish-stylus/kxm_920.da *

stylus

*had to update the springs model feedback (the other version was something like a 6 spring parallel reverb, not bad sounding, but far from original)

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BiCho

this modular system is wonderful!

however, I can't see the plugins in one of my computers, even though I have the latest version 3550 installed in both of them. I only see kxm 120 in my SB0240, althoug I see them all in my SB0530

am I doing something wrong? does it have its own installer?

thanks, keep up the great work!

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Audiotecna - Innovación Musical
Native Instruments and Moog Music official distribution for Colombia

BiCho

I was able to make these show up by reinstalling the driver.

I tried the system, however there is a big problem regarding voice stealing in the input modules, which makes them unusable, even if the consequent modules sound great.

I hope the upcoming version fixes this big problem

cheers,

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Native Instruments and Moog Music official distribution for Colombia

Russ

That is expected behavior, as it's current design is really for one (monophonic) voice at a time (per synth instance), so you need to arrange your MIDI input to take that into account (i.e. no chords/overlapping notes, etc on the same MIDI channel/synth instance).

stylus02

long time no see guys. i don't lose many words. the modular has got a facelift. it's now with all the "eyecatchy" things i ever wanted. the old webpages are down. the new one runs on my laptop (10kb/ s upload). it's not allways online. excuse me for that.

http://kxm.dyndns.org/

more info later..

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Russ

I have 3550 installed ATM, so I cannot check them out, but the pics look nice