by John Bowen » Wed May 27, 2020 11:08 pm
Well, I’m not sure if this is really correct, as I see at
https://electricdruid.net/roland-cross-mod-metal-sync/ the author states,
>
> Jupiter 8 “Cross Mod” is FM from VCO2 modulating VCO-1. This is described in the manual as “ring modulation style effects” which is true in as far as they can both produce non-harmonically related pitches. Technically, they’re not similar at all.
>
> Note that this FM is fed to the 1V/Oct CV input of the oscillator, so it is exponential FM, not linear FM.
>
> The Jupiter 8 also offers classic hard sync from VCO-1 (master) to VCO-2 (slave) with its “sync” switch.
> Jupiter 6 Cross Mod and Sync
>
> Jupiter 6 “Cross Mod” is FM from VCO-2 to VCO-1, just like the Jupiter 8. There is a CEM3360 VCA which controls the amount of FM, and this can >be set manually (the “Manual” slider in the Cross Mod section) or via Env-1 (the “Env-1” slider in the Cross Mod section). The Jupiter 6 is more >sophisticated than the Jupiter 8 in this respect – it allows envelope-controlled FM depth, whereas FM depth is a fixed setting on the Jupiter-8.
So, is it exponential or logarithmic FM?
Well, I’m not sure if this is really correct, as I see at https://electricdruid.net/roland-cross-mod-metal-sync/ the author states,
>
> Jupiter 8 “Cross Mod” is FM from VCO2 modulating VCO-1. This is described in the manual as “ring modulation style effects” which is true in as far as they can both produce non-harmonically related pitches. Technically, they’re not similar at all.
>
> Note that this FM is fed to the 1V/Oct CV input of the oscillator, so it is exponential FM, not linear FM.
>
> The Jupiter 8 also offers classic hard sync from VCO-1 (master) to VCO-2 (slave) with its “sync” switch.
> Jupiter 6 Cross Mod and Sync
>
> Jupiter 6 “Cross Mod” is FM from VCO-2 to VCO-1, just like the Jupiter 8. There is a CEM3360 VCA which controls the amount of FM, and this can >be set manually (the “Manual” slider in the Cross Mod section) or via Env-1 (the “Env-1” slider in the Cross Mod section). The Jupiter 6 is more >sophisticated than the Jupiter 8 in this respect – it allows envelope-controlled FM depth, whereas FM depth is a fixed setting on the Jupiter-8.
So, is it exponential or logarithmic FM?