Casio CZ/ VZ/ FZ - Pro Series

>I have been an owner of a CZ-1 for years. I recently bought a CASIO HT-
>3000 and to my surprise found that its 'SD synthesis' engine was in fact
>a scaled-down PD synthesis with one analog VCF added.
>
>I believe that its so-called DCO is actually a set of two PD oscillators
>with ring mod and maybe noise mod. They don't seem to have resonant waves
>or 8 step env like CZ, so I said 'a scaled-down PD synthesis.'

I would kind of doubt it.  I don't have an HT or HZ (though I wouldn't mind 
getting one) but it would seem to me that they use simple PCM waves.  You 
might be able to check by taking both synths apart and comparing hardware.

>There are few resources on the net about its synthesis engine, and my
>speculation is almost based only on my ear and years spent with my CZ.

Unfortunately there is very little technical information out there about any 
casio synth.  I would love to see a webpage somewhere with every model and a 
technical description of how they all work inside, but no one seems to have 
enough information.

>This could have been my dream machine - if only I could edit the PD 
>oscillator
>section!

You could modify it to have a filter input, then run your CZ-1 through it to 
get a similar effect...

>If you know something about SD synthesizers (HZ and HT), especially how
>to deeply edit its sound and its relation to PD synthesis, please tell
me.

That's one of those things that no one seems to know.....

But maybe you could tell me this- do you know the differences between the 
HT-700, HT-3000, and HZ-600 (I think those are the right numbers)?  Do they 
have signifigantly different features and capabilities or are they the same 
synth only repackaged?

>Sorry if this is off-topic, and sorry for my bad English as I am a 
> >Japanese..
>. Thanks.

It's not that off-topic.  And actually your english is very good.

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