I made a quick video showing the ‘talking bass’ patch explained in the CP-251 manual. In addition to the CP-251 it involves an MF-101 and MF-102. I used a little phatty as the sound source.
I hope this is not considered spam or anything, just figured someone out there might want to hear what this sounds like.
I also have a question about this patch. I’m not sure I understand why these ‘vowel’ sounds are made and what was the thought process in making this patch (unless it was accidental).
The audio signal simply goes from the instrument through the MF-101 then through the MF-102. The MF-101’s cutoff is being modulated by a square LFO with variable lag rise and fall. Without the MF-102 this yields a basic opening and closing of the filter for a kind of basic ‘wah’ effect. The more ‘human’ sounds come from the MF-102. As far as I understand the ring mod creates an output which is composed of adding and subtracting the carrier sine frequency to all the harmonics of the input signal (which was in this case a simple saw wave through a LPF whose cutoff is being modulated). The ring mod carrier frequency is kept static. So really the only dynamic thing (other than the input pitch) is the harmonic content of the input signal changing due to the filter opening and closing. I think I got that right, correct me if I’m wrong. Now this is all fine from a technical point, but how did someone come up with this patch knowing it would produce a human sound? The parameter ranges are pretty limited (ie changing any key parameter past a small value loses the human vowel sound). Was this a result of random knob twisting or was there some science behind how a human mouth is shaped or something?
I’m just trying to understand these patches in more detail so that I can someday be able to come up with my own. I’m finally starting to understand each moogerfooger’s individual operation but combining them in interesting ways is still something I’d like to learn more about.
That’s truly awesome. The vowel sounds are a big big part of dubstep at the moment and most are achieved with using a formant filter VST. Your video is the first time I’ve seen it done using analog hardware. Do you think similar results could be produced without the mf-101?? I’d love to do this with the LP and the mf-102 I’m about to buy
this can also be acheived by running the 102 carrier out into the filter cutoff CV input. i do this with both m micromoog and 101. FYI it works best on 2pole setting you get some carrier bleed through on 4pole settings
oh no problem for using this with the 101 i have the controls as follows
101: amount = max, cutoff = about 9 oclock, res = 7, mix = max, 2pole, and fast, drive set so it just starts turning red when a signal goes through (Note; when i use the 101 im using it with guitar) and then 102: modulator switch = HI, frequency = about 4:30 just before it et ear piercingly high pitched. activate 101 leave 102 off, send the carrier out of the 102 into the cutoff in on the 101. now the original video was taken down so i cant compair side by side but this should get you close.
now using the 102 with my micromoog i keep the same setting on the 102. Micro: 32’, square wave, sub osc = to taste, cut off = 2oclock, res = 3oclock, env amount = -1,filter attack = 400msec, filter release = 400msec, filter switch = full (4pole), amp attack 1msec, amp release = 100msec. i dont know how this will transfer to a little phatty but this gives me an “aye” sound. and if you take those same settings and move env amount = +3 and filter attack = 1msec it gives me an “eye” sound. and now move the cuttoff = about 1oclock, env amount = -3, amp release = 400msec this give me a “yeah” sound
the vowels are much more pronounced with the micromoog. guitar sounds vocal but not really words. hopefully this helps if not ill see if i can throw together an audio demo soon.
Thanks for that walkthru I’ve got it going but seem to just get a lot of bleed through. So the vowel sound isn’t isolated. Still sounds awesome though. I’m really tempted to get the mf-101 to get it perfectly isolated.
Great! Try playing around with different pole settings. As you decrease the poles you will probably have to move the cutoff counter clockwise to deepen the sound.
