vocoders

[Grant Richter]

Vocoders are something that digital techniques (like DSP) are very well 
suited for. The more bands (or bins) available, the more intelligible the
speech. This leads to very high levels of complexity in the analog world but
has no hardware impact in a DSP design (maybe a faster clock).

You can pick up Boss SE-50 effects boxes for $50 nowadays and they have a
built in 22 band vocoder. An analog implementation would require several
hundred dollars in parts, and the results would be indistinguishable from
the $50 DSP unit.

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>From: mark verbos <a0284520 at addcom.de>
>To: synth DIY <synth-diy at node12b53.a2000.nl>
>Subject: vocoders
>Date: Mon, Oct 30, 2000, 7:15 AM
>

> Speaking of vocoders....
>
> I have looked all around at the available information on vocoders and what I
> have come to understand is that all the vocoders that people praise as the
best
> sounding have very steep filters (some 54db/oct.) and lots of them. I am
> considering constructing one, but all the designs I have seen on the net are
> for machines with 10 bands or less, and 24db/octave filters. Does anyone have
a
> schematic for a better vocoder? has anyone built a big daddy? should I save my
> 1000 uk punds and buy a new EMS 2000?
>
> curious...
>
> --
> mark verbos
>
>