[sdiy] The Okita Vocoder & others: which to make??? Quite a quandry...

[Christian Bergmiller]

Seems like quite a few list members try to decide whether
to build or not to bulid an analog vocoder.
(as there's this promising alternate DSP route..)

In order to archieve the "standart analog" vocoder sound,
the okita design seems to be hard to beat in terms of simplicity.
It lacks an voiced/unvoiced detecter though. (could be added)
And as Juergen pointed out, it's not possible to alter the envelope
follower signal.

the ETI vocoder uses the same bandpass configuration
(two detuned 2 Pole BPs), and has component values
for 14 bands vs. the 10 bands the okita uses.
so this could be a start for a modded 14 band okita design.

OTOH the "10 band sound" could just be what you want..

christian
(trying to make decision too)


2008/6/25, anthony <aankrom at bluemarble.net>:
> No, that's a different one. I mean one that was in a magazine with initials
> similar to that. I'd like to find schematics for the EMS vocoder for sure
> though...
>
> I just checked and it's ETI. That's the other vocoder. It's a .ZIP file of a
> bunch of TIF files, but it is NOT the Elektor Vocoder.
>
> Anthony
>
> ----- Original Message ----- From: "GRAHAM ATKINS"
> <gatkins at blueyonder.co.uk>
> To: "anthony" <aankrom at bluemarble.net>
> Sent: Tuesday, June 24, 2008 6:30 PM
> Subject: Re: [sdiy] The Okita Vocoder & others: which to make??? Quite a
> quandry...
>
>
> > Hi Anthony,
> >
> > I presume you mean Electronic Music Systems (London), EMS.
> >
> > Graham
> >
> > On Jun 24, 2008, at 21:14, anthony wrote:
> >
> >
> > > But all three I've spoken of here have their merits. Then there's  the
> EMI (I think that's the name) vocoder. It looks like a  worthwhile project
> too. I can't remember why I initially liked it  and then panned it, but I'm
> sure it will come back to me. I reckon  as the years pass, I will have made
> 4 or 5 different vocoders. (More  if people want to buy them from me... But
> that would be one of my  own design, probably largely inspired by the Korg
> VC-10 and using  BL3207's if I make them in numbers to sell...)
> > >
> >
> >
> >
> >
> >
>
>
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