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Post by spacedog on Feb 12, 2019 12:48:41 GMT
DC coupled Audio interface with at least 4 ins and outs plus USB to laptop , I think you could do this already with two 4I/O modules hooked up to a USB Interface (e.g. the Focusrite 4i4, if still available, or even the 6i6, but other cheaper brands are available). OK, it would cost 58 euro for the modules, plus the cost of the Interface - but you may find a cheaper interface. I think you could do it now and you would also be buying a more developed USB interface. |
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Post by thetechnobear on Feb 12, 2019 20:00:27 GMT
unfortunately the cheaper audio interfaces are not DC coupled. (not sure which is the cheapest DC coupled interface available) I think dijital has something like the ES8 in mind... but that's not a cheap module ( and developing USB audio interface is not a simple task) |
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Post by spacedog on Feb 12, 2019 22:05:11 GMT
unfortunately the cheaper audio interfaces are not DC coupled. (not sure which is the cheapest DC coupled interface available) I think dijital has something like the ES8 in mind... but that's not a cheap module ( and developing USB audio interface is not a simple task) Having now done my homework, I discover that there's a whole world of generating CVs that had passed me by. Indeed, my suggestion is invalid for that  It didn't take long for the Expert Sleepers kit to turn up.
A bit of googling did seem to turn up ways of fudging AC coupled interfaces, but now I'm out of my depth. |
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Post by dijital on Feb 12, 2019 22:29:05 GMT
unfortunately the cheaper audio interfaces are not DC coupled. (not sure which is the cheapest DC coupled interface available) I think dijital has something like the ES8 in mind... but that's not a cheap module ( and developing USB audio interface is not a simple task) Having now done my homework, I discover that there's a whole world of generating CVs that had passed me by. Indeed, my suggestion is invalid for that It didn't take long for the Expert Sleepers kit to turn up.
A bit of googling did seem to turn up ways of fudging AC coupled interfaces, but now I'm out of my depth. Thanks for trying to help Spacedog yes it's more an ES8 thing without the expense |
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Post by dijital on Feb 12, 2019 22:33:29 GMT
unfortunately the cheaper audio interfaces are not DC coupled. (not sure which is the cheapest DC coupled interface available) I think dijital has something like the ES8 in mind... but that's not a cheap module ( and developing USB audio interface is not a simple task) Yes exactly like that Technobear the ES8 but without the cost it's an idea non the less to help me integrate my AE more with my DAW |
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Lugia
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Post by Lugia on Feb 22, 2019 8:34:40 GMT
Aha! I realized that there's an important missing element here while gridding out (on paper) my prospective AE system: a panner! Since we don't have a stereo mixer as such in the AE lineup, having a CVable panner would do quite a bit to enabling spatialization between two mixers such as the 4-4. Fortunately, these aren't the hardest things to slap together, so maybe one could be cobbled up relatively soon?
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Post by NightMachines on Feb 22, 2019 8:57:59 GMT
Aha! I realized that there's an important missing element here while gridding out (on paper) my prospective AE system: a panner! Since we don't have a stereo mixer as such in the AE lineup, having a CVable panner would do quite a bit to enabling spatialization between two mixers such as the 4-4. Fortunately, these aren't the hardest things to slap together, so maybe one could be cobbled up relatively soon? A dedicated module like this (or VC stereo mixer) would be great, however you can already easily patch stereo panning with the current modules. There have been several experiments with stereo sounds in the Music forum. You only need the 2ATT (with its inverter) and a 2VCA. Using the 2ATT, you invert the panning CV (e.g. an LFO) and use two VCAs, one with the normal CV and audio and one with the inverted CV and the same audio. Now when one VCA opens, the other one closes and vice versa. |
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Post by rockysmalls on Feb 22, 2019 12:58:29 GMT
Aha! I realized that there's an important missing element here while gridding out (on paper) my prospective AE system: a panner! Since we don't have a stereo mixer as such in the AE lineup, having a CVable panner would do quite a bit to enabling spatialization between two mixers such as the 4-4. Fortunately, these aren't the hardest things to slap together, so maybe one could be cobbled up relatively soon? A dedicated module like this (or VC stereo mixer) would be great, however you can already easily patch stereo panning with the current modules. There have been several experiments with stereo sounds in the Music forum. You only need the 2ATT (with its inverter) and a 2VCA. Using the 2ATT, you invert the panning CV (e.g. an LFO) and use two VCAs, one with the normal CV and audio and one with the inverted CV and the same audio. Now when one VCA opens, the other one closes and vice versa. yes, I emailed Robert ( co-incidently feb19th of LAST year ) to start a discussion on this .. below is what I wrote and a faceplate mock up I made.. but I think he was too distracted by upcoming Firenze and superbooth stuff so it didn’t spark anything in him ,, sometimes a suggestion will trigger what he calls “ a bee in his bonnet “ also, in researching , despite what I imagined, its not all that simple to do panning circuitry well. hopefully this forum discussion will bring it back into Roberts mind? “dear Robert, THIRDLY: now I am delving more into the AE modular and recording stuff out I am beginning to feel the need for some STEREO ACTION!! this is my thought on a module that would function nicely after the 4ATTMIX module and also if the headphone amp stereo outputs worked ok for line out recording ( a bit of saturation doesn't harm :] ) I know panning circuitry isn't as simple as it seems and I also am aware that CV control of parameters isn't always easy in circuitry of this size, i guess vactrols are out of the question!? ( i wish the Spring reverb had a CV in for mix or feedback, for instance ) But this is my desire for a panning module, which, because of the CV inputs might also have various other volume/crossfade interesting control functions if ab-used correctly. the 4ATTMIX could handle the levels before they go into this module. what do you think? is it actually possible to build. it would be ok if it was only 3 pan channels of course.. 4 is just me being greedy and also because of matching the 4ATTMIX module. yrs, a happy customer.”  |
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Post by thetechnobear on Feb 22, 2019 19:55:13 GMT
a panning module, would now need a audio/dc switch for each channel... to avoid attenuation issues.
i was wondering last time when I did this with VCAs and the inv was, should this be a linear or exponential response?
I assume but not checked the vcas are exponential, since thats "normal" for audio, where linear is more common for CV.
perhaps we need a VCA with lin/exp switch (or even just a shape!)
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Lugia
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Post by Lugia on Feb 23, 2019 6:21:53 GMT
Actually, the sort of architecture wouldn't necessarily be the usual linear/expo thing like you'd find with VCAs. For a panner, you need to switch between equal power and linear crossfading. Equal power is what you want for audio, as it provides a 3 dB dip at center on both output channels in order to keep the panoramic movement from "jumping out" at the center point. And linear is what you'd want for CVs and modulation signals, as that 'jumping out' issue is really only a problem with apparent loudness issues, not voltages.
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Post by thehandoflenin on Mar 17, 2019 23:11:05 GMT
Bluetooth midi module.
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bert
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Post by bert on Mar 23, 2019 11:17:42 GMT
Something like the Expert Sleepers ES-8, as a few have suggested already, would be awesome as it would allow us to, fully in the DIY spirit of AEM, create or own software modules in SuperCollider for instance.
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Post by dmoney2000 on Apr 3, 2019 15:07:28 GMT
Maybe this is already in the works somewhere, but how about a clock multiplier?
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Lugia
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Post by Lugia on Apr 4, 2019 3:43:57 GMT
Hmmm...OK, this talk about Silent Way has got my attention for a hot minute. Here's what I would do (or rather, what I probably WILL do):
1) First up, you need a way to keep overvoltages/negative voltages out of the AE. Solution simple: Soundmachines Nanobridge. $35, 14 cross-connections.
3) Now, having checked this, several things stand out immediately. First of all, there's some expensive things on this list. Secondly, though, some of them _were_ expensive, but aren't anymore! F'rinstance, the MOTU UltraLite...this portable USB interface gives you eight SW "sends" and "returns", and looking at Ye Olde eBay, older versions of this appear to be plentiful at around $150-ish used. Sure, there's some moronically-high prices there, but it's eBay, so you're going to get that.
4) Pop back over to Expert Sleepers' site and pony up $59 for Silent Way. As long as you have an interface that's listed as having no issues in #2 above, you're golden.
And if you need more control channels, either get something like a 24io ($350-ish on eBay) instead and a couple more Nanobridges, or just another cheap used UltraLite and Nanobridges as needed. But the UltraLite alone + Nanobridge gives you 7 channels each way, _plus_ a dedicated MIDI interface, and you can even track the AE via the same interface by using only six SW "returns" and using the UltraLite's other two input channels for the AE's audio if you want stereo. Easy-peasy! And it doesn't cost an arm and a leg...
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Post by Gaëtan on Apr 23, 2019 9:36:04 GMT
One hidden gem of the Moog Mother-32 that doesn't get enough attention to me is the VC Mix : it does mixing, crossfading, VCA, DC voltage source and attenuator. It has 2 inputs A and B, a knob and a VC input over that knob's function. When you plug 2 signals, the knob decides the blend between A and B : CCW is 100% A, CW is 100% B, everything in between is... a mix between A and B. When you plug only one signal into B, the knob acts as an regular attenuator knob. And since it is voltage controllable, that automatically doubles as a VCA. When you don't plug anything, it outputs a fixed voltage decided by the position of the knob. This is so incredibly useful and versatile that I used it in every patch and I really wished I had more. It would be great to have a pair of those in a single module. See the manual p.17 : api.moogmusic.com/sites/default/files/2018-01/Mother_32_Manual.pdf |
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Post by spacedog on Apr 23, 2019 9:55:04 GMT
One hidden gem of the Moog Mother-32 that doesn't get enough attention to me is the VC Mix : it does mixing, crossfading, VCA, DC voltage source and attenuator. It has 2 inputs A and B, a knob and a VC input over that knob's function. When you plug 2 signals, the knob decides the blend between A and B : CCW is 100% A, CW is 100% B, everything in between is... a mix between A and B. When you plug only one signal into B, the knob acts as an regular attenuator knob. And since it is voltage controllable, that automatically doubles as a VCA. When you don't plug anything, it outputs a fixed voltage decided by the position of the knob. This is so incredibly useful and versatile that I used it in every patch and I really wished I had more. It would be great to have a pair of those in a single module. See the manual p.17 : api.moogmusic.com/sites/default/files/2018-01/Mother_32_Manual .pdf , that didn't quite work for me, so I've grabbed a jpg of the relevant section.  |
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Post by Gaëtan on Apr 23, 2019 10:23:55 GMT
Thanks, I've edited the link, it should work now. I've done a rough sketch too. Attachments:
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Post by arti on Apr 23, 2019 19:51:14 GMT
Thanks, I've edited the link, it should work now. I've done a rough sketch too. I like the idea but isn't it simmiliar to 4ATTMIX module? I don't have it, so can't tell if it does all what You have wished for or if it does any of it  but to me it seems capable of most of those things. Can someone confirm or correct me? |
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Post by Gaëtan on Apr 24, 2019 5:58:40 GMT
There are similarities in that they can mix and attenuate, but there are also some big differences. Firstly if you use one channel of the 2VCMIX as an attenuator, it can be voltage controlled, turning it into a VCA. Each channel is also a crossfader at its core, which has its own features. I love crossfaders personally, I think they're a really underrated module type. If you only need to manually mix 2 sources, I think it's more intuitive. With VC over it, crossfading allows you to easily do some very interesting stuff. Some examples : - Saw in A, Square in B, VC by triangle LFO : morphing between waveforms - Noise in A, OSC in B, VC by envelope with no attack and some decay : noise transient
- Sine in A, Noise in B, VC by square LFO, out sent to VCA controlled by an envelope triggered by the same LFO : kick-snare rythm - etc.
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Post by 101 on May 7, 2019 11:28:40 GMT
A 1U cat scare module. With a built in motion sensor and a speaker that emits sudden bursts of high frequency noise, say circa 30- 70 kHz (outside the human range of hearing). Perhaps with a frequency adjust.
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bahm
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Post by bahm on May 15, 2019 13:02:26 GMT
Self tuning DCOs.
Joystick module att/cv/mixer with movement recording. Recording should be speed controllable and syncable.
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Post by dmoney2000 on May 21, 2019 1:05:14 GMT
please tell me this is possible: a 4-op FM oscillator, similar to Akemie’s Castle. Fm with cv controllable wave and algorithm would be amazing.
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Post by Gaëtan on May 21, 2019 12:15:46 GMT
I was even thinking, as for DX-7-style FM synthesis... Why not have a module that is just a single operator ? An operator is basically just a (sine) oscillator + EG + VCA bundled together. With the proper ins and outs, it would be easy to chain several of them in any way you want. |
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bahm
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Post by bahm on May 21, 2019 12:41:06 GMT
I was even thinking, as for DX-7-style FM synthesis... Why not have a module that is just a single operator ? An operator is basically just a (sine) oscillator + EG + VCA bundled together. With the proper ins and outs, it would be easy to chain several of them in any way you want. That would be cool but for good fm sounds the operators all have to be tuned perfectly and you need some mathematical options like some operators run on 1/3 speed or 1/4.... Otherwise it's nice to have to make crazy noises but not the real good sounding deal. |
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Lugia
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Post by Lugia on May 25, 2019 0:27:23 GMT
A possible wavetable VCO solution: look into the Digisound Series 80 VCDO as a possible design source. This uses EEPROM-stored waveforms in four banks of eight, each being steppable on triggers. Plus, the VCDO was simple enough that it could be kit-built back in the 1980s. From that origin, and given the better EEPROM tech these days, it might be possible to approach something more akin to a wavetable VCDO by adding full wavetables to this, then implementing some attenuators to allow scan CVs to range forward or backward through the stored wavetables along a given axis, possibly determining this via a control for "axis" to vary the angle of the wavetable scan vector. You could also allow CV and attenuation on "travel" (length of scan) as well as "rate" (speed of scan). While the Digisound version made use of Curtis chips, the AE variation would probably work better as a hybrid device driven by an Arduino or Raspberry Pi (or variants) both for design ease and updateability (ie: the ability to "blow" new wavetables in via a software editor + USB, perhaps piggybacking onto something like the upcoming Ableton Live 1.1 wavetable editor.
Also: given that Koma has figured out how to make a cheap frequency shifter (it's in the Field Kit FX), maybe a similar module could be done for the AE, perhaps as a collaborative effort with Koma Elektronik?
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It didn't take long for the Expert Sleepers kit to turn up. 
but to me it seems capable of most of those things. Can someone confirm or correct me?
