Z plane filters

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Z plane filters

Postby chamomileshark » Sat May 05, 2012 6:46 pm

I'm thinking of picking up one of the E-mu samplers/ROMplers - but the most important aspect to me would be the z plane filters as in the ones on the Morpheus that go from one filter type to another over time.

I see many E-mu products with z-plane filters but there is a suggestion in some of the stuff I have read, the term Z plane also came to mean a bunch of exotic but relatively static filters - ie no more dramatic morphing.

I'm fairly sure the Ultraproteus also has them - but can someone tell me if the other E-Mu products that are listed as having z-plane filters actually have the same morphing capacity as the Morpheus?

Many thanks
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Re: Z plane filters

Postby vcs3 » Sat May 05, 2012 9:17 pm

If you want Z-Filters got for the Ultra-Proteus and the Morpheus.

Check this linkl http://www.emulatorarchive.com/Archives/ROMplers/romplers.html
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Re: Z plane filters

Postby GuyaGuy » Sun May 06, 2012 12:41 am

Z-plane filters are on the Proteus 2000 and Protozoa too right?
I have the Protozoa ROM on my Vintage Keys but have barely touched it.
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Re: Z plane filters

Postby balma » Sun May 06, 2012 5:01 am

Proteus 2000-2500 /Command Stations XL7, MP7 and PK7 have the same set of filters, but they are different from the Z plane filters from the Morpheus.
A Z plane filter is a filter wich can change its function over time. Two filters interpolate between them using a single parameter.

there are 50 different filters on the Proteus and Command Stations have LPF, phaser, flanger, vowel formant, EQ Boost EQ cut and Special Effect filters.
Some of them are very complex like the 12 order filters, and consume polyphony.
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Re: Z plane filters

Postby chamomileshark » Tue May 08, 2012 12:25 pm

ok, thanks, seems it is either a Morpheus or Ultraproteus.
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Re: Z plane filters

Postby masstronaut » Tue May 08, 2012 4:33 pm

Yeah I think the difference is that those are more fully programmable whereas the rest give you a number of preset filter topologies, if that's the right word. Still "Z-Plane" though.

The E-MU software samplers (Emulator X2 and X3) have those programmable morphing filters as well I think.
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Re: Z plane filters

Postby Ashe37 » Tue May 08, 2012 8:00 pm

As do the E4 series hardware samplers.
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Re: Z plane filters

Postby balma » Tue May 08, 2012 10:56 pm

Morpheus has 14 order filters. The Proteus/command station synths have a 2, 6 and 12 order filters. Some of them are really crazy and unusual, and fantastic for basses or choirs (DJAlkaline, Roguehertz, Meatygizmo, BassOMatic, Ubulator, etc... ) , and they are similar to effects. 12 order filters reduce polyphony to 64.

The Q parameter can behaves as the resonance, ring tone, mid frequency, depth of notches and band selector depending of the filter you choose. But Q is NOT a realtime parameter on the proteus series. You hold a note, and modulate Q, nothing happens, notes must be retriggered to hear the Q modulations. Maybe that´s the difference.
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