Serge TKB Controlling Oberheim SEM and Moog Voyager
Routing separate sequences to separate analog synthesizers in different formats the Serge tkb oversees all control voltage tracking tasks. These sounds were created and tweaked live.
Additional info about the Serge:
A few words about Serge sequencers. Note that Serge/Sound Transform does not make a traditional keyboard like you see on most other synthesizers, such as Moog, Roland, etc. You can get a traditional vintage control voltage keyboard (Roland, Moog, Polyfusion, etc.) and interface it to the Serge, since the Serge adheres to the 1 volt/octave standard. Or you can generate a control voltage from your MIDI keyboard and an interface.
Sound Transform follows the Buchla model of offering a touch sensitive keyboard/sequencer unit, as well as more traditional simple sequencers. Originally, they offered a sequencer whose stage was selected by push buttons. This is what’s called a sequencer-programmer: you could use it in an automatic mode as a traditional sequencer, or use it manually to select/program voltages you set. So you can mimic a traditional keyboard if you want by tuning each stage to various notes. Or discard the traditional keyboard concept and simply use it to fine-tune different parameters in your patch for later recall.
The TKB is the hub of the sequencers – each stage has a corresponding output that goes high when it’s selected. This complements the other sequencers, which have an input that, when high, causes that stage to be selected. So the TKB can be used to control another sequencer, or whole sets of other sequencers, regardless of the number of stages they might have.
Sound Transform offers a set of Serge sequencing programmers, from four to eight stages, plus the Sequencer with eight stages, and the TKB with sixteen stages. Confused? What they call their regular Sequencer is not a sequencing programmer in that each stage is selectable by a button but not by a stage select input. The sequencing programmers have stage select inputs. And the TKB has stage select outputs.
The sequencers are a little ‘bare’ in that none of them have an internal clock. You must use another module as a clock source, and typical sources are the DSG, DTG, and the Smooth section of the SSG, patched to oscillate. But they do have cute features such as step trigger inputs for RESET, UP/DOWN, and HOLD.
Most of the Serge sequencers are optionally available with an internal connection to a quantizer. Why would you want that? The quantizer forces the range of the stage pots into stepwise note intervals. So as you turn the pot, it isn’t a continuous rise or fall, but steps up and down a scale. This makes tuning much easier and more reliable. The variable outputs are still available on quantized sequencers also.