![]() Note that the filter is fully open with a little extra resonance for top-end sizzle. When looking at the OB-Xd, it would frankly be rude not to address the Van Halen shaped elephant in the room! This preset does just that! As you can see from the screenshot, it’s a fairly straight-forward, loud, brash, bright, double saw-tooth patch which is very reminiscent of the synth patch used in Van Halen’s Jump. In order to get the most out of the preinstalled presets, we need to understand the Banks, as there are actually way more presets than meets the eye! Therefore, rather than design some patches to help explain features (as we did in our previous tutorial), we'll break down and analyse some of the preinstalled presets, which we believe showcase important and/or significant aspects of the OB-Xd (and that sound very cool too, obviously!). The OB-Xd already comes with a huge range of very comprehensive and versatile presets, which showcase its sonic capabilities very well. Now that we understand more about the background of this powerful, analogue-modelling synth, and how it works, let’s take a look at some presets and figure out how they're put together. ![]() MASTER controls the synth's output volume, while FINE and COARSE enables you to alter the synth's pitch by varying increments. Lastly, we come to the Master section, which is largely self-explanatory. Once you have a sound designed, play multiple, held notes in each mode you’ll quickly ascertain precisely what’s happening in each LEGATO MODE. The simplest way to better understand these is to create a 1-voice sound that has a prominent FILTER and AMP ENV (which both contain fairly low “sustain” levels). Retrigger (“Retrig”) - Retriggers all envelopes.Keep Amplitude Envelope - Keeps held notes at the AMP “sustain” level, but allows the FILTER ENV to retrigger, cycling through its “attack” and “decay”.Keep Filter Envelope - This mode keeps the FILTER ENVELOPE at its “sustain” levels, but allows the AMP ENV to retrigger, cycling through its “attack” and “decay”.Keep All - This mode keeps both the FILTER and AMP envelopes at their respective “sustain” levels.LEGATO MODE concerns how the envelopes behave when multiple notes are played/held which exceed the number of voices available. The OB-Xd is also a “low-note” priority synth by default, however the VAM (Voice Allocation Mode) button switches the note-priority to “last-played” (which is more common on modern synths and will probably feel more intuitive to the average player). it prioritised the lowest note played if/when the number of notes being played exceeded the number of voices the synthesiser could produce. The original OB-X was a “low-note” priority synthesiser. These two features need a little more explanation! Let’s begin with VAM. ![]() The MIXER section is fairly self-explanatory, providing volume controls for both OSC as well as a third, NOISE OSC.
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