From Niall Munnelly Sent Sun, Feb 4th 2018, 23:14
From Niall Munnelly Sent Sun, Feb 4th 2018, 23:14
The Serge pulse divider runs from /2 to /8. If A4=3D440hz, /3 is 146.6666=E2= =80=A6, which is pretty close to the well-tempered D3. /5 is 88, a little of= f from F2, iirc. I=E2=80=99d like one or two more of them so I=E2=80=99m not= forced to choose between audio and trigger/clock division chores. Sent from my iPhone > On Feb 4, 2018, at 4:50 PM, Brian Willoughby <xxxxxx@xxxxxxxxxxxx.xxx> wro= te: >=20 > Interesting! Looks like it=E2=80=99s a 5th; 2/3 of the osc. They must be u= sing a PLL or a counter to get a non-power-of-two interval. In fact, they=E2= =80=99re probably using a counter, because that could provide the standard -= 1/-2 octaves. A gate or two could provide the 25% pulse at -2 and the 5th co= uld be an alteration of the counter reset input logic. >=20 >> On Feb 4, 2018, at 1:40 PM, Niall Munnelly <xxxxx.xxxxxxxx@xxxxx.xxx> wro= te: >> The Elektron Analog 4 offers a suboscillator turned down a fifth (or mayb= e it=E2=80=99s down an octave + fifth). It=E2=80=99s effectively frequency/1= .5 or /3, right? >>=20 >>> On Feb 4, 2018, at 4:31 PM, Brian Willoughby <xxxxxx@xxxxxxxxxxxx.xxx> w= rote: >>> This is the nature of a sub oscillator. The circuitry needed to produce a= square wave that is one octave below its input is very small and cheap. So c= heap that adding the entire circuit again to produce two octaves down is qui= te easy. >>>=20 >>> The drawback is that the shape is square and the pitch is not independen= t. The shape can be altered with filtering or other additional circuitry, bu= t then you start getting to the complexity of a full oscillator. By the time= you make it completely tunable, you no longer have a sub osc, but a complet= e osc - perhaps with sync input. >>>=20 >>> Unless I=E2=80=99m missing something, you won=E2=80=99t find a sub osc o= n any synth that is tunable. Maybe it could provide -3/-4 octaves, but not a= rbitrary intervals. It simply has a different name at that point. >>>=20 >>>> On Feb 2, 2018, at 8:07 AM, Justin Maxwell <xxx@xxxxxxx.xxx> wrote: >>>> The Avalon has a sub osc but it isn't tuneable beyond a -1/-2 oct toggl= e >>>=20 >>=20 >=20