Artesia

Sweet... could be great fun for audio projects :)

hehe ...added ..shame the avatars here are so small

hehe cool ..i wondered what that was... ...here i go too then:

ack no worries ...i should proof my work by running a spell checker ..im always doing this. If i thought in words instead of visually ..this wouldnt be quite so frequent for me.

yeah bummer ! ...the spelling was incompetence ...guess i should start labelling up front panels with makaton :)

Right here goes for now folks, its up and running, however the full compliment of sid chips will have to wait until after xmas ..as i found out i dont have enough PICs lying around. However as far as controls and aesthetics go, it is now finished ! ..so nothing new to see later.. enjoy !

the boards that i have here for the sids are from an old revision, got it working now... they definately were not layed out in the configuration listed on the wiring diagrams. The pinouts for the sid are supposed to be: SO | MD RC | MU ---| PWM VS | VD They are: SO | --- RC | MU MD | PWM VS | VD also since i loaded those boards, the pwm pin moved to a dedicated pin on the same connector :) Ended working this out by following where each signal should goto what IC pin ...and varifying with multimeter when in circuit & replaced one 74595 which had gone up the wall.. Alls well, sid making nice noises now :)

im getting seeerious cussword inducing problems trying to coax the sids back to life ...the pinout connections on the boards do not correlate to any of the documentation currently online... getting there, but itll take time, too much of it at that.

A quick snap of almost everything working.. Proper shots & hopefully fully working hardware to come shortly...

i paid £3 a pce for several from an amateur radio fair running at the metrodome in south yorkshire. Usually they are £30 or so a pop from various suppliers ..i beleive maplin sell something similar still. As for the front panel being white ...that was my doing :)

Well the case is togeather, wondering what its like with the lights on ?: ..well i am too.. give it a couple of hours and come back :): Btw those werent the first choice for knobs ...maplin had no more of those fluted ones i like so much ..so bought those & shaved the huge skirts off them.

yup ..theres some samples on the completed listing from ebay. Fm is an easy mod to add ..one variable resistor & three wires. if the link doesnt work there ..let me know and ill sort it.

Heres a band who seem to share my taste in music hardware... what id do to pocket the contents of their studio ;) http://www.synthmusic.info/ Incidentally i already have quite afew things theyv'e got & that they havn't ..and maybe that they should.. But i'm just rambling now... maybe someone could introduce them to midibox.org ? ..sure they'd see the novelty in building a SID at least ;) Anyways heres there tunes: http://www.synthmusic.info/music2.php ...ta da ! No inappropriate product placement from me this time.

lol

Revised slightly due to oversights, heres whats acutally being printed to the decal: And heres the panel, drilled up, painted and drying: Hmm its going to be another slide decal panel ..however next up will be acid etched, painted panels.. looking forward to that one :) Design drying on front panel.. oh the tedium (hmm.. will it stick ?):

be very carful about your chioce of capacitors in audio circuits... especially in filter circuits, the chioce of the right ones or the wrong ones can make a huge difference.

Heres a wasp filter clone, should it interest anyone: http://jhaible.heim.at/tonline_stuff/hj_wasp.html JH Wasp Filter Clone (from a message to synth-diy mailing list in Jan. 98) Hi, On the weekend I have finally tested the wasp filter clone, and made some modifications. Results so far: It sounds considerably different than the ordinary SEM-type state variable filter. The maximum Q is lower on the Wasp version. And there is an additional distortion coming from the CMOS inverter nonlinearities. This distortion is gradually increasing with input level, and you can slightly hear it way before the circuit actually clips. The CMOS inverters seem to be the dominant source of distortion; the CA3080 input dividers are rather on the save side. (100k / 1k ; but remember the absolute maximum voltage swing is limited to 5V anyway.) I have replaced the 100k resistors with 51k without noticeable increase of distortion. Ok, the Wasp Filter sounds different than other state variables. But what is it good? IMO, every filter's overdrive characteristic has its own special applications. The SSM2040 in LP configuration, for example, is unbeatable when you want to process a full chord of buzzy "Jump"-type saw voices. The Wasp Filter works best on Farfisa-type *organ* sounds. I tried various sounds from my OB-8, and really, the best results came with bright organ sounds. My favorite patch is the filter in LP mode with medium cutoff, and then an envelope with slow attack opening the filter (resonance quite low). This certain "edge" that is added by the filter's distortion is hard to describe, but very pleasant. I had this circuit at the breadboard first, and I was so pleased with its sound that I build it again on a tiny veroboard. The whole filter consists of 3/6 CD4069 and two 3080's, counting the active components. I built a notch filter from another 1/6 CD4069 (add HP and LP), a heavy distortion section (1/6 4069 with 1meg feedback resistor, and 100nF input capacitor without series resistor), and a fixed 2pole, 5kHz LPF from the remaining 1/6 4069 as a speaker simulator for the distortion section. Now use the SVF to preshape the frequency response of some input signal, and then go into the overdrive / speaker simulator. LPF, BPF and even HPF settings sound pleasant thru the overdrive, with or without resonance. For some reason the notch filter doesn't work well in this configuration. (But it makes a great "one notch phaser" without the overdrive, and controlled by an LFO.) I was really astonished what you can get out of one single CMOS chip (the OTAs just act as variable resistors, so they don't get much credit here.) I've also made some other experiments with the 4069. You can build a little saw VCO just with one 4069 and a npn pair: One inverter as integrator, two more for the hysteretic switch, another one as opamp that regulates the current in the exponential converter. Use another one for scaling / level shift and drive a pnp transistor with equal collector and emitter resistors, and you have a poor man's version of the VCS-3 variable triangle/saw VCO. Or overdrive another inverter with a triangle wave, and add a DC offset, and you have a poor man's VCS-3 - "sine with waveform control". Ok, these things have limitations. You *always* get a glitch when the Integrator in the VCO changes direction. And the waveshapers work far from ideal, i.e. bend a positive slope more than a negative one, and I have not even tested the accuracy of the expo converter. But for one little CMOS chip plus a few transistors this makes a hell of a utility and modulation VCO. Later, I decided to build a special ADSR / LFO circuit for this filter. This is surely not the best ADSR circuit around (time range is limited, offset voltages due to single supply ...), but my design goals were a cheap circuit and 5V single supply operation. I don't think it makes much sense to build it as a standalone envelope generator, but together with the Wasp Filter it makes a nice little processing box. The whole combination of the separate parts has some unusual aspects that one might consider suboptimal design, but which I have chosen deliberately to have something different from my other modules: * No expo converter for the filter. Manual Cutoff is set by a logarithmic potentiometer, and the envelope is added to this exponential CV. This results in a certain interaction of Manual Cutoff and Envelope Depth settings. I wouldn't choose this for my first VCF, but it is an interesting alternative if you already have a lot of filters that "do it the right way". * The Distortion is located after the filter. Usually, you create rich harmonics with an overdrive, and then you filter these harmonics with a VCF, a phaser, or something similar. But it is also very interesting to have a VCF before a distortion unit, to pre-shape the waveform that feeds the distortion in a dynamic way. The avoid the very sharp sound of a pure distortion unit, a fixed filter ("speaker simulator") is hard-wired after the overdrive section. * The state variable filter normally doesn't self oscillate. However, if you plug in a long cable at it's output, it will. This is because the CMOS buffers have a rather large output impedance which will form an extra filter pole together with the cable's capacitance. This could easily be cured with an extra buffer stage, but I decided not to do it in my unit. Remember, this is a "low fi" device, and didn't even the Floyd create some of their most interesting FX sounds by plugging in a WahWah pedal backwards (;->) ?? * The Filter and Distortion Schematics

lovely bloke :) Did you know that apparently the mercuary based ones where judged to seep 75% of a persons permissable ammount of mercury ? ..according to some impartial investigations by goverment organisations looking into the matter ...hmm with a mouth full of fillings / something dodgy going on overall ..that could easily be exceeded drastically ..concerning really.

headscratch... Almost happy with this design now... Only thing.. dear me.. is that its a bill board for the wrong logos ;)

Crap ? ...well that might be afew assumptions rolled into one.. If you are going to diss something, please at least explain your thinking on a matter.. so we all have a good foothold in flaming eachother ;) ..nah on this thing, i just think its a cool concept.. the idea of a stand alone vst box that does not run on windows or crash (isnt that synonymous ?) & has decent latency. i just like the idea of a do-anything box that you plug in and it works & you can forget about it.. (particularly in live situations). Im all for the idea of someone either stripping down a linux distro & doing something similar; or for that matter getting the muse code working on other hardware. As a diy project it would be increadble fun. and yes, their off the shelf box is a wee bit out of most peoples pockets. its been a long time coming.. the fixed & often vastly less powerful specialised hardware of digi synths / efx has needed replacing with a cheap, powerful, universally compatable hardware platform for some time now. Given that both pc parts and vst's are being constantly updated and improved.. There probably couldnt be a better marrige. If you meet the end of the usefulness of the software you are using; you aren't stuck with selling a rackmount box & buying another (Also softwares often a bunch cheaper.. due to not paying for the specialised hardware). If for some amazing reason you actually manage to exceed the power of the computer hardware, you can either put another one togeather.. or upgrade it. And i state again, i'd love to see this done diy style (no need for their custom soundcard or interface (guess you could midibox that if you wished tho)).. it just makes so much more sense than buying, carting around, then selling crateloads of digital hardware :) Additional muse: If this seems a little pricey for an off the shelf solution; take a look at the 'open labs neko 64': http://www.soundonsound.com/sos/jan05/articles/openlabsneko.htm Which is a cross between a DAW and a Keyboard, is luddy huuge & costs £3,000 to £5,000 & pretends not to be running windows xp.. by the use of a custom skin over the whole lot. In my view of things... thats definately not the way to go ...even if you do have really, really deep pockets.

you missed one ;) ..nah on this thing, i just think its a cool concept.. the idea of a stand alone vst box that does not run on windows or crash (isnt that synonymous ?) & has decent latency. i just like the idea of a do-anything box that you plug in and it works & you can forget about it.. (particularly in live situations). Im all for the idea of someone either stripping down a linux distro & doing something similar; or for that matter getting the muse code working on other hardware. As a diy project it would be increadble fun. and yes, their off the shelf box is a wee bit out of most peoples pockets. its been a long time coming.. the fixed & often vastly less powerful specialised hardware of digi synths / efx has needed replacing with a cheap, powerful, universally compatable hardware platform for some time now. Given that both pc parts and vst's are being constantly updated and improved.. There probably couldnt be a better marrige. If you meet the end of the usefulness of the software you are using; you aren't stuck with selling a rackmount box & buying another (Also softwares often a bunch cheaper.. due to not paying for the specialised hardware). If for some amazing reason you actually manage to exceed the power of the computer hardware, you can either put another one togeather.. or upgrade it. And i state again, i'd love to see this done diy style (no need for their custom soundcard or interface (guess you could midibox that if you wished tho)).. it just makes so much more sense than buying, carting around, then selling crateloads of digital hardware :) Additional muse: If this seems a little pricey for an off the shelf solution; take a look at the 'open labs neko 64': http://www.soundonsound.com/sos/jan05/articles/openlabsneko.htm Which is a cross between a DAW and a Keyboard, is luddy huuge & costs £3,000 to £5,000 & pretends not to be running windows xp.. by the use of a custom skin over the whole lot. In my view of things... thats definately not the way to go ...even if you do have really, really deep pockets.

it could be a pain.. quote: "This directory includes all of the RPMs used to build the base Receptor system. They are made available for download here. Receptor also includes proprietary code from VST developers and from Muse Research which is not included here. For GPL/LGPL code, this is part of Muse's licensing responsibility. For other licenses, the code is provided as a friendly service. Please consult each RPM for its licensing requirements. Note that packages that have been modified from their original version have the word 'muse' added to their name. - Muse Research"

not entirely sure, will have to ask my dentist when i see him next. Which wont be long, as i need a little bit of work doing...

yeah.. should be so.. heres an early review of an older version of the receptor: http://www.soundonsound.com/sos/mar05/articles/muse.htm which interestingly enough illistrates that it is indeed what would appear to be a standard motherboard with custom extras sitting on top.. see picture below. Just using the software to run a machine as a vst host, would only require the hardware that a normal machine provides.. if it complains about lack of receptor.. that could be hacked out of it ;) Someone should look into this :) Right im off for afew days, cyas in a while.

hmm.. yup not a bad idea.. go with that. Was thinking of doing that with some filter banks which are on the project rouster.. However they are more likely to actually be swapped in and out... whereas a sid will stay in place when its put in. As novel as Drop in's for sid are.. you might be creating a little more work for yourself than nessursary..