None of these people have *any* legal claim on ARP IP , and many might counter that they don't deserve any ethical credit at all, considering the poor choices made in the final years of ARP's existence. There is no ARP IP. ARP has been out of business longer than IP even exists. Patents are in forc...

Very bummed to hear this news. Lyle Mays is one of my musical heroes. He was an amazing piano and synth player, and his fingers looked like they bent about four different ways.

The laws of thermodynamics say the same thing, but for different reasons. There are four laws of thermodynamics: 0 -- if System A is in equilibrium with System B, and System B is in equilibrium with System C, then System A is in equilibrium with System C. 1 -- Energy is conserved 2 -- All systems u...

I've been buying Yageo and Stackpole 1% resistors from Digikey, and have no complaints at all. My goal is to have 100 of every value on the E96 scale -- so far I've got about a third of them. I bought so many for various filterbank and comb-filter projects I've been working on, so I don't need trimm...

just saw today someone put on sale in my areas music forum B 303 for 150€. Used for a few hours. Folks buying and using them like socks. Thats the biggest issue i see here. Waste of resources and feeding the consumerism. I think it's more likely that the low entry price is encouraging people to buy...

brandonlogic wrote: ↑

Fri Jan 24, 2020 1:02 pm

is there an official rubicon ii thread? searched but couldnt find one

You're in it!

Drop all the C#s to Cs and now you have the quartal pentads for all the modes of A melodic minor. I had to get up in the middle of the night to write them down, because they were giving me insomnia. Here they are: MelodicMinor.png So, the major modes are basically just stacked perfect fourths with z...

Your post reminds me of something from Uri's play book on how to argue against anti Behringer messaging. Quote from Uri B "Frankly, I never understood why someone would charge you US$ 4,000 for a minimoog, when the components just cost around US$ 200." www.gearslutz.com/board/electronic-music-instr...

I'll tell you what I think is unethical: Moog charging $3000 for a Model D in 2017 or whatever, when electronic manufacturing is radically less expensive than it was in 1971. All the electronic parts in a real Model D aren't worth more than $100, and the hardware another $100. The most expensive par...

I too am glad this thread has been resurrected. I have been excited lately about Messiaen's modes of limited transposition; specifically the chord tables they generate. There are quite a few excellent articles on this by an academic named Chiong Wai-Ling at the Chinese University of Hong Kong (she h...

All I know is that if Behringer had existed when I was a teenager, my future probably would have looked very different. I think it's great that someone is making all these classic instruments available to people on a tight budget. I say more power to them. And I for one wouldn't hesitate to buy a Be...

Dear BasariStudios guy (sorry, I don't know your name), I have no beef with you. I enjoyed your video (although certain aspects of it made me a little agitated). I also have no problem with the ZPO. It looks like a great oscillator. I'm just a bit of a stickler for the proper use of terms. I think i...

Nice. The data sheet mentions: Rail-to-rail output swing to within 800 mV with a 2-kΩ load (+-15v). Wondering if this is the same with +-12v rails. If I'm reading the data sheet correctly, TL07x mentions @ 2-kΩ load (+-15v supply) = +-11.5 / 11.75 v. Can only guess that with +-12v supply rails, it'...

I built a beat-frequency VCO for my first Bode frequency shifter, based on ideas from Electronotes. It was not great. I've since gone with a dual Rubicon core, with one syncing the other, which interestingly gives perfect quadrature as well as through-zero FM. Along with one-VCA multipliers (with fo...

Also, at the risk of belabouring the point just a little bit, I wanted to respond to the comment about the Rubicon and "true TZFM". The Rubicon achieves true TZFM. There is no post-VCO inversion of the waveform. Indeed, no waveshaping is required at all. The linear FM can and does go smoothly throug...

Hello ari ellis , I did respond in this thread, but I have since moved my response to the thread just about the video, because it was pointed out to me (quite rightly, I fear) that it is not necessarily very good etiquette for a designer to make critical comments about other people's designs on thei...

In this Video i tried to Compare the Rubicon 2 vs the ZPO. I tried to the best of my abilities and experience to show what they can do, at least part of it and also tried to be non biased towards either one of them. You be the Judge. https://youtu.be/rmTltkogVtk Hello All, Doc Sketchy here. I desig...

EDIT: Post moved to a different thread.

If you CV a crossfader with a pulse wave, then use two other waveforms from the same VCO as the A and B inputs to the crossfader, then adjusting the pulse width is like sliding a window across the two waveforms, one reflected and one transmitted.

xcc wrote: ↑

Sat Jan 04, 2020 7:57 pm

Bumping this old thread. In LFO mode, can the different waveforms be used simultaneously?

Absolutely. All LFO mode does is adds a much larger capacitor into the core integrator, thus making the oscillator oscillate much more slowly at the same control voltage.

Thanks for your responses. This has been a very enlightening exchange (for me, at least). One think I'm thinking about with respect to the Rubicon: What if an audio-range sine wave is sent to the TZFM input (at full strength modulation Index), with Symmetry at zero (balanced TZFM) and a slow wavefor...

yes, it has a lot in common with frequency shifting and wavefolding. a TZVCO can be implemented with a wavefolder followed by a sine shaper. it can also be implemented with an FM input and a circuit to deal with the zero crossing. in the video i show, its done by wavefolding and sineshaping in a si...

OK, I think I know what to do. This is not that different than frequency shifting. It requires many of the same elements. Indeed, it should be possible to simply rearrange the elements of a Bode frequency shifter to achieve a phase modulator. This is because of the trigonometric identity: sin(a+b) =...

Well, I can't see that that was anything too special from a sonic standpoint. I went on Wikipedia and looked up phase modulation, and there is a cool mathematical graphical thing on there. I did a few calculations on Excel for a sine wave phase-modulating another sine wave, and the results were fair...

Sorry to be a newb, but can someone explain to me exactly what phase modulation does to a waveform? Looking at the scope shots of J3RK's tests, how do I know that I'm looking at phase modulation? I feel like if I knew exactly what phase modulation was, I could design something to achieve it relative...