I am building a custom SEM 4 Voice System with 4 Oberheim SEM Pro´s.
I am using a Reaper script to have true Round Robin assigning different MIDI channel with each MIDI note.
However I am also planning to add true polyphonic aftertouch regarding filter and vibrato control for pitch. I will use the internal SEM LFO for PWM and I will use an external LFO for pitch vibrato which will be controlled with a 4 channel Doepfer VCA to be able to adjust different vibrato depth to each note like the Yamaha CS-80.
So I am looking for the best LFO out there , I have a Moog CP-251 and it is really good but I think I want a LFO with Sinus wave , for that magic CS-80 vibrato.
What do you think is the best , most musical and smooth LFO out there?
I only say that because I use SW and ES hardware with my SEMs(2 orig, 2 PP-Tom O) for everything including poly setups. It works great and you can use as many LFOs as you have available outs.
You're probably looking for hardware, though.
I can't wait to get the silent way suite - I'm waiting for the new midi din sync expander (e-40?) but jeez the lfo plugins are amazing. And they are actual lfo"s - if you look at the output through a scope you can see pwm, square wave ect - because it all goes through audio channels.
I'm waiting on the ot which has a "lfo designer" that is supposed to be incredible.
If your looking seriously at this stuff modular is where to look - stuff like mutable instruments braids.
I'd point at a simple eurorack module if you want a clean sinus (it's not hard to do)
a Doepfer a-145 works flawless
if you want more control over the waveform, and a nice sounding bass oscillator, I'd point at a Bubblesound uLFO.
that's just two of a large amount of LFOs.
there's the Bananalogue VCs which has control over rising and falling wave length.
also I'm using a Double Andore (freak-city) which can do two LFOs, and a Wiard Envelator.
but if you want to drive 4 VCA's I think the Doepfer a-143-3 is the ticket Quad LFO
I use an a-143-4 (quad LFO/Osc) which also doubles as nice oscillator
Actually I am just looking for a simple sinus LFO and yes , I guess I want a hardware analog sinus...however I am using Silent Way software too but to start with I think I will just go for the Doepfer 145 LFO. I just need 1 LFO that I split with a Doepfer A-180 module and then the 4 signals go to the 135-1 quad vca. When I am playing my Roland A80 with poly AT the poly at is converted to 4 channel mono pressure and then routed to Silent Way software to output 4 different CV´s to the 135-1 quad VCA controlling 4 different vibrato depths on each SEM voice. it will be cool. Maybe the worlds first Oberheim 4Voice with polyphonic Aftertouch
That's a good choice: simple but effective. At some point, though, I highly recommend adding a dual or quad LFO. I'm mostly using an MFB Dual LFO with my own SEM. Being able to move up to the next level of LFO action through LFO interaction is not a linear step up but an exponential one. I also have a Doepfer A-143-1 Quad AD/LFO which can do great things to the SEM in conjunction with a random clock or voltage generator.
The pittsburgh modular lfos are nice bread and butter type - then you can get into all the incredible hybrid stuff. But your half way there with silent way and with it you don't have to buy some of the "plumbing" type modules as there covered in the suit
Looking at your issue from the "best LFO" out there angle, seems clear it would be the best VCO provided it ranges sufficiently slow for your control needs. But generally my standard line is if there really was a best LFO (or whatever), we'd all just save up, get it and call it a day. Of course it the features that are important to your goals determine the choice coupled with the usability of said features, and perhaps the price may play a role. In any event the Bubblesound LFO for Euro is a solid choice.
As for CS-80 magic, going from memory, you have VCOs that are Hz-v - so that's likely doing things with linear detuning that a 1v/oct like the SEM isn't doing. Somewhere in my head I'm remembering the LFO in there clips the tops off triangles, or is that the Chorus wave? In any even that's an interesting shape often forgotten for modulation. Doepfer makes a couple things that clip at a determined voltage.
Finally, while not for analog purists, some of the more elaborate MIDI interfaces as well as Silent Way can interpret the MIDI and generate CV LFOs.