Is DIVA the end of the road?

[Urs]

Not sure at the moment if it's already there, but a SEM filter would be nice too

Have a close look at the "Uhbie" filter

[stardustmedia]

Not sure at the moment if it's already there, but a SEM filter would be nice too

Have a close look at the "Uhbie" filter

Aaaahh... and I always thought that's a new design.

Thanks

[EvilDragon]

Uhbie filter is pretty much like SEM.

I would much rather see the Prophet rev2 filter than TB-303.

[stardustmedia]

hmmm... now I'm a little confused. Help me to wrap my head around those filters.

Am I right with:

Ladder = Moog
Cascade = Arp
Multimode = Roland Juno? Yamaha CS80?
Uhbie = SEM
Bite = U-He



>>>> UPDATED after Urs' answer

Ladder = Moog
Cascade = Juno 60 / Jupiter 8
Multimode = Alpha Juno / Jupiter 6
Uhbie = SEM
Bite = MS20

[Urs]

Cascade filters have been used in Juno 60 and Jupiter 8
Multimode filters (State Variable Filters) are found in alpha Junos and Jupiter 6
Bite (Sallen Key) are prominently featured in MS-20s

[stardustmedia]

Cascade filters have been used in Juno 60 and Jupiter 8
Multimode filters (State Variable Filters) are found in alpha Junos and Jupiter 6
Bite (Sallen Key) are prominently featured in MS-20s

Danke Urs

I guess you can't mention that in the manual due to legal issues, right?

[EvilDragon]

Isn't cascade=ladder?

[stardustmedia]

What about CS80 and Arp? Or are they the same/similar like Roland?

[Urs]

Isn't cascade=ladder?

Ladder = 4 diffferential pairs of transistors or diodes connected with capacitors, acting one pole filters.

Cascade = 4 voltage controlled amplifiers (commonly OTAs) in series, each followed by a capacitor to ground

A ladder really looks a bit like a ladder and is always built from discrete parts. A cascade doesn't need those differential pairs, because the OTA doesn't need a bias voltage to go through and thus doesn't need to be made symmetric with a positive and a negative path. Or so. Anyhow, OTA cascades are usually built from integrated circuits. Only the capacitors are still discrete.

[ho66it]

What about CS80 and Arp? Or are they the same/similar like Roland?

I don't know much about CS80 filters (except they sound great!!), but early ARP filters were exactly like Moog ladder filter…so much in fact that ARP was sued by Moog and had to change their filter design.

[Urs]

What about CS80 and Arp? Or are they the same/similar like Roland?

CS-80 has been discussed to death - While we have one for analysis, we would need to ship it with a hardware interface and a Greek composer to play it

We don't have any Arp other than the filter module built into the SE-1x

Our current favourites are the Polivoks filter, a Steiner-Parker filter and a diode ladder (TB, System 100)

[EvilDragon]

Isn't cascade=ladder?

Ladder = 4 diffferential pairs of transistors or diodes connected with capacitors, acting one pole filters.

Cascade = 4 voltage controlled amplifiers (commonly OTAs) in series, each followed by a capacitor to ground

A ladder really looks a bit like a ladder and is always built from discrete parts. A cascade doesn't need those differential pairs, because the OTA doesn't need a bias voltage to go through and thus doesn't need to be made symmetric with a positive and a negative path. Or so. Anyhow, OTA cascades are usually built from integrated circuits. Only the capacitors are still discrete.

Thanks for this info - I appreciate it!

[abique]

The 303 sound also comes from the sequencer, etc... And I think that with products like abl3 (coming) and phoscyon this is well covered.
Anyway I'd be happy too to see them coming.

[buescher]

early ARP filters were exactly like Moog ladder filter…so much in fact that ARP was sued by Moog and had to change their filter design.

In fact, pairing the Dual VCO Eco (for it's ring modulator) with the Ladder Filter, and adding random hold/random glide on the LFO for S&H effect can produce sounds eerily similar to an Odyssey. The real magic in that synth, though, is it's unique mixer layout, which I imagine would be a murderous task to emulate and match up to the more conventional layout shared by all the synths already chosen for Diva.

[machinesworking]

Our current favourites are the Polivoks filter, a Steiner-Parker filter and a diode ladder (TB, System 100)

I've resisted Diva simply because I have two analog poly synths, but if you incorporate the Polivoks filter I will have to buy it!
I've often thought of getting a Polivoks despite the fact that it would be hell to repair.