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dafridgemagnet (November 30, 1999 at 12:00 am)
yay i guessed then right! It's good to know that the minimoog actually did have a special triangle. And everyone knows that the ARP is almost always out of tune :P
albedoshader (November 30, 1999 at 12:00 am)
@adriansmithmusic : Yep. And apologies for my typos. I wasn't very attentive writing my comments. ;)It's funny. I'm still trying to get an idea how the waveforms of the MS-20 are generated. Especially the square wave looks weird.
albedoshader (November 30, 1999 at 12:00 am)
@adriansmithmusic : Yep. And apologies for my typos. I wasn't very attentive writing my comments. ;)It's funny. I'm still trying to get an idea how the waveforms of the MS-20 are generated. Especially the square wave looks weird.
adriansmithmusic (November 30, 1999 at 12:00 am)
@albedoshader my apologies it is indeed the MS-20,i was reading the list in the info and forgot that was the randomized list. ;)
albedoshader (November 30, 1999 at 12:00 am)
@albedoshader: my bad, I meant sawtooth-sawtooth ring modulation. Also make more sense as you can produce this easily by ring modulating one oscillator with itself to get a "triangle".
albedoshader (November 30, 1999 at 12:00 am)
@adriansmithmusic: interesting, that's what i found to be the case with the MS-20 Triangle waveform. The Minimoog triangle looks normal to me but has slightly bent flanks.As I wrote before, the rounded edge on one half of the triangle seems to be the result of a triange-triangel ring modulation. That's what I got with calculating ring modulation of two triangles.
AutomaticGainsay (November 30, 1999 at 12:00 am)
@adriansmithmusic I really wanted to include oscilloscope in this video, but the oscilloscope I have is really inadequate! Thanks for the info!
adriansmithmusic (November 30, 1999 at 12:00 am)
I was bored today, so i looked at these on a scope,and the minimoog's Triangle has rounded edges on the negative half of the waveform, so its slightly more Sine like on the bottom half, (or filtered!)
albedoshader (November 30, 1999 at 12:00 am)
@SteefStevens: Even if the resonance of the Moog filter is set to zero there are still some ripples in the filter curve near the cutoff frequency. That's why the overtones are slightly enhanced if you sweep the filter across the spectrum.
albedoshader (November 30, 1999 at 12:00 am)
@albedoshader: You could say the MS-20 does produce waveforms that haven't much in common with the name ;)The ARP 2600 is the synth with the "most mathematical" oscillators.And the Minimoog oscillators hahave a pretty "raw" character.It's surprising how much all three oscillators fluctuate. There's a lot of randomness visible, even the amplitude seems to vary quite a bit from cycle to cycle. All three have these tiny fluctuations in common that give each their own characteristic overtones. |
