![]() Spread and Voice Panning are assets in this mode. UNISON: A single-note mode that stacks all the voices available. Note that CPU use scales linearly as the number of voices is increased. This can be a CPU saving measure as much it can be a creative choice. VOICES: Unlike the original OB-X, you can select the number of active voices. Global Section VAM (Voice Allocation Mode): By default the OB-Xd is a low-note priority synth (like the OB-X) but the VAM switch changes this to last-note priority. The HQ button on the filter turns on "High Quality" mode which results in better interpolation and smoother processing of higher frequency components at the expense of CPU consumption. It turns on and off to give you something to play with on the GUI which doesn't affect the sound in any way. The BP switch has no effect in 24dB mode. This mode is only low-pass, but the MULTI control now allows you to smoothly change the depth of the filter slope from 24dB/octave on the complete left, down to 6 dB/octave on the complete right. There is also a 24dB mode which is activated by the 24dB switch. Using the MULTI rotary control, you can crossfade between low-pass behavior on the complete left, to either notch (by default) or bandpass (using the BP switch) behavior at 12 o'clock, and high pass behavior on the far right. It implements a Multimode 12dB/octave filter like the Oberheim SEM module. The OB-Xd significantly improves on this design: The original OB-X had a single 12dB/octave low-pass filter. SPREAD: This control detunes every single oscillator by a random amount, simulating the sound of slightly detuned VCOs (unlike the precision of DCOs). When a sound is created and is out of step with concert pitch, the Tune control in the Master section can help tune to the nearest concert note, but to play in pitch external MIDI will have to be transposed. Note that there is no built-in way to transpose the OB-Xd by steps. This is consistent with the original OB-X design. It does not alter the filter cutoff frequency, which allows the filter to change it's harmonic center relative to the fundamental frequency of the oscillators. The transpose control in the Master section only transposes both oscillator pitches in parallel and by octaves. Oscillator related controls (in the Global section) Detune of OSC2 only adjusts up from the basic pitch (the original was bilateral). The Bright control adjusts the clarity of higher harmonics. Note that disengaging this doesn't keep the pitch at the precise semi-tone step but resumes gradual pitch adjustment. The Step switch allows for precise tuning by semi-tone steps. Sounds created by sync and x-mod this way were judged more useful than the inharmonic results of the original modulation path. On the OB-Xd this is reversed: OSC1 modulates OSC2. In the OB-X cross modulation (Frequency Modulation), OSC2 modulated OSC1. Note: Operation description conforms to the latest Ob-Xd build as of the above dateĪ mixer was introduced to blend the two oscillators and noise source which is much more flexible than the fixed levels of the original design. So thanks to all who participated in its creation and also to the various people who stepped up to create excellent free patches for the OB-Xd. But we would be remiss not to thank all the members of KVR who participated in the OB-Xd forum thread! While the heart and soul of its design and development is all 2DaT, much discussion and debate went into it’s graphic layout and the implementation of some of its features. Thanks to 2DaT who created this little marvel. Also, like many synths of the OB-X’s generation, the OB-Xd has no internal effects so its sounds and textures can be greatly enhanced by the use of additional processing like chorus, reverb, delay, etc. ![]() It needs to be contained within a VST framework where things like transposition, automation, layering, arpeggiation, etc, are available. However, it was not designed as a self-contained completely independent soft-synth. It implements micro random detuning which is a big part of that sound. The OB-Xd was designed to sound as good and as rich as the original. ![]() This manual will make no attempt to explain basic synth programming or the operation of the OB-X, but will discuss modifications from the basic design and in some cases their ramifications. If you're unfamiliar with the OB-X, its user manual can easily be found from various sources on the net. It attempts to recreate its sound and behaviors, but as the original was very limited in some important ways a number of things were added or altered to the original design. discoDSP OB-Xd Virtual Synthesizer InstructionsĭiscoDSP OB-Xd Virtual Synthesizer Introduction. ![]()
0 Comments
Leave a Reply. |