FM and hard sync
The MiniBrute 2 doesn’t offer linear FM or oscillator sync on its front panel, but both can be achieved via the patchbay. Let’s see how... The MiniBrute 2 adds Frequency Modulation to its front panel capabilities, with an FM knob sitting in the Osc 1 section. By default, this controls the amount by which Osc 2 modulates the frequency of Osc 1. This type of modulation is called exponential FM, but the MiniBrute 2 is also capable of linear FM which maintains the frequency relationship between the modulation source and destination as you play different notes, resulting in a more harmonic form of modulation. This can be achieved by patching a modulation source (such as the Osc 2 output) into the Lin FM input in the patchbay. Doing so via an attenuator will give better control over the level of the effect. The patchbay also allows for hard sync between the two oscillators, as seen in the steps below.
> Let’s create a classic hard oscillator sync. Tune Osc 2 to an octave lower than Osc 1, then patch Osc 2’s output into Osc 1 Sync. This will force oscillator 1 to follow the pitch of oscillator 2.
> We can now play with using other elements to sweep or modulate Osc 1’s pitch, whilst still keeping it sync’d to Osc 2 pitch. Try turning up the FM rotary, or patch an envelope in to Osc 1 pitch, via an attenuator.
> Since we want Osc 2 controlling pitch, we need to make it follow the keyboard/ sequencer. To make this happen, patch the KBD output into Osc 2 Pitch in.