Voice Variation

The Voice Variation section contains parameters that affect the overall character and differences between each voice in OB-Xf.

Per-Voice Parameter Spread

• Glide: Sets the amount of variation in portamento time between voices. This can notably create a more detuned or chorused effect when multiple voices are played in unison and glided between.
• Filters: Sets the amount of variation in filter cutoff frequency between voices. Higher values result in a wider spread of cutoff frequencies, leading to a richer and more complex sound.
• Envelopes: Sets the amount of variation in envelope time parameters (attack, decay, release) between voices. Increasing this value can add subtle differences in how each voice is articulated.
• Levels: Sets the amount of variation in amplitude levels between voices. Higher values can create a more dynamic sound. This is applied at the final output stage of each voice (post-filter).

Pan Knobs and Voice Indicators

The 8 pan knobs allow panning of each individual voice in the stereo field. This can create a wider and more immersive sound.

To the right of each pan knob, an LED indicator shows when the corresponding voice is active. If fewer than 8 voices are used (see Poly), only the corresponding number of pan knobs will be applied and have an LED next to it. If more than 8 voices are used, the pan knobs will cycle through the voices (e.g., with 10 voices, pan knobs 3-8 control voices 3-8, and pan knobs 1-2 control voices 1-2 and 9-10). Additional LEDs of different colors will be displayed to show the activity of these extra voices.