avis demandé Moteur sonore

XV

Mostly the same as XP6, but with COSM effects (guitar/bass amplifiers, speaker & microphone emulation) and two additional effect slots. 90 internal effect types. 3 insertion effect slots (40 of the 90 effect types takes all 3 slots if only one chip is used). Up to 64 polyphony. Has an additional memory controller for sample RAM, enabling dynamic sampling. Can be paired to double the maximum polyphony and improve effects DSP power. 25-bit wave address bus for a maximum of 33554432 words (=64 MiB) addressable wave ROM per chip (all XPs have a 24-bit wave address bus).

Used in XV-5080, XV-5050, SD-90, SD-80, Fantom, Fantom S/S88, MV-8800, and MC-909 (as TC223C660CF-503 or RA08-503). XV-5080, SD-90 and SD-80 use a pair of XV.

XV-5080 seems unique among these models as it has a (software) switch between two master clocks for the XV chip that allows for switching between 44.1 kHz and 48 kHz output. The XV engine in all other models listed above outputs at 44.1 kHz. Twice efficient compared to the XP series, the XV chip needs 6 clock cycles to process each voice, which translate to a input clock of 16.9344 MHz (44.1 kHz output) or 18.432 MHz (48 kHz output).

Earlier models with sampling capability using this chip doesn’t have proper external multisample support until Fantom S/S88, suggesting the multisample support is added with system firmware rather modifications to the synth engine.