Speak and Spell Schematic Posted (Samples available)

[Andy Mucho]

> -----Original Message-----
> From: owner-synth-diy at mailhost.bpa.nl
> [mailto:owner-synth-diy at mailhost.bpa.nl]On Behalf Of Martin Czech
>
> ::: I've scanned in a schematic for the TI Speak & Spell, for
> those who are
> :::interested.  It's at this URL:
> :::http://www.spiritone.com/~8brain/schems/spknspl.gif
>
> I think that's a cheaper kind of phonem synthesis, the sound is
> allways the
> same for a specific key, no matter what the typed sequence is?

I'm not 100% sure that's quite the right schematic.. IIRC S&S used a
TMS-5220 which is an LPC-10e chip.
You hammered 10 filter co-efficients through it every 22.5ms, a
voiced/unvoiced flag, frequency which is the length in samples of the pulse,
and finally a gain and these were interpolated by the hardware..
Blending between different phonemes shouldn't be too difficult.

> Maybe someone could turn on a recorder and type all keys as fast
> as possible,
> that would give a nice, short .wav file ;->

I can post these if you want.. As in fact I just have :)
http://www.software-superstars.com/andy/s&s.zip


Regards
AndyM