☢ Jomox Mbrane 1_1 (2010)

Analog Membrane Modeling. Two analog T-bridge oscillators become electronic membranes! weird percussion!

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▓ Electro ▓
▓ analog drum machine ▓


Mbrane 11 sound list:

The jomox has no display for name, just numbers

■Analog Membrane Modeling. Two analog T-bridge oscillators become electronic membranes.
Why? Because they can be coupled. And because their dampening can be controlled.
Then add a little noise, add a little envelope, and the brand new electronic percussion synthesizer of Jomox is ready. But because this would have just been too simple, everything can be saved again and controllable by Midi.
You can use this small box either in a live setup driven by a hardware sequencer or in a production as very versatile synth in order to create incredible analog electronic percussion.

■How does it work?  A T-Bridge oscillator is actually something like a band pass filter which is working close to the resonant frequency. Because it becomes an actual sine oscillator at perfect tune-up, you call the deviation of ideal resonance dampen. In this case, the oscillator decays in form of an attenuated vibration if it's exited - similar to a single membrane that is hit.

■In the M.Brane 11 there are two of such T-OSC. The dampen can be either negative (as just described) or positive. Then it really becomes a steadily vibrating oscillator. The more negative the dampen is, the more the T-OSC becomes a filter with sharp q-factor (quality). This can be useful at e.g. snare drums or hi hat-ish sounds.
Looking at the drumskins of an acoustic drum, there are 2 membranes positioned that modulate and interact with each other by the coupling through pressure waves of the content air. That produces the typical sound of a drum. By resonance and counteractive interference new frequency bands and overtones create.

Similar to that the parameter Coupling works at the M.Brane11. Both, in the first place independently vibrating T-OSCs, can attenuate or gain the vibration of the partner by means of negative or positive coupling on either ways (1_2 and 2_1). With lightfingered tweaking you get these interesting membrane-like dampened sounds, especially by cross-wise positive/negative coupling.

■The values can be very close to another. Therefore it is a great advantage that the M.Brane allows for storing the parameters, because sometimes tiny value changes can cause great sound changes if the system is close to a chaotic state. The M.Brane is definitely something for sound nerds - less for preset-twiddlers, as the manifold and sensitive modulation settings want to be explored and played with.
In Split Mode 2 both the T-OSCs can be played over the keyboard, which again causes creativity to rise.

■The LFO can either modulate a choice of one T-OSC or both. It always restarts with the note trigger and works like an additional pitch envelope.the LFO can not be midi clock synchronized.

■In order to create snaredrum-like sounds, the M.Brane has a noise generator with an own envelope. A part of this signal is fed into the T-OSC to excite the "membrane" with the noise signal. The noise can be either white noise or metal noise. The length of noise decay and the decay of the resulting tone are controlled by two different envelopes that are commonly controlled by the parameter Decay.

■Brand: jomox
Model: mbrane11
Type: analog SMD
Made In : Germany
Date Produced: 2009

■ Instrument Percussion Synthesizer
■membrane oscillators: 2 t-osc, each of tune and dampening adjustable, both couplings in either direction adjustable

■presets: 110 (10 user ram, 100 flash)

■sound engine: fully analog with storeable parameters

■envelopes: 2 analog envelopes for membranes and noise that are controlled by one parameter (decay)

■noise: white noise, metal noise with 65535 different noise pattern combinations

■gate:trigger gate time 0.5ms-10ms, up to 4-times multi trigger possible

■lfo: 8 wave forms: saw +/-, sine +/-, tri +/-, rect +/-, modulates the pitch of one or both the t-osc, starts always syncronous to the note trigger and is pitch envelope at the same time

■display: led 7 segment 3 digits

■midi: midi in, midi out

■user interface: 1 data wheel, 1 potentiometer, 5 buttons, 16 leds for parameters and functions

■outputs:1 mono out 1/4" rca jack

■output level: about 0dbu

■input:external analog trigger input, sensivity adjustable

■power supply: external wall wart adapter 9v dc

■weight:ca. 0.5 kg / 1.1 lbs.



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