I have the SP1000 and all the original documentation and projects. It's old technology. If there is enough interest , I can scan the info.
Eric
formatting link
>
>
> The SP1000 was intended as a replacement for the SP0256 but never got
> into general usage. I have been unable to locate enough information
> to get an SP1000 running. I am giving these away in the hopes that
> someone, somewhere has the ability to puzzle out how the SP1000 works.
> One per customer and serious experimentors only as this is an advanced > project.
>
> Please note, normal shipping charges will be billed.
>
> Extreamly rare
> Standard microprocessor interface
> on-chip oscillator
> software-controlled feature recognition sampling frequency from 5.0kHz > to 15.9kHz
> automatic gain control output for controlling an external input > amplifier
> 8-stage LPC lattive analyzer
> 8-bit on-chip D/A conversion with pulse with modulated digital output
> TTL compatibility
> Single +5 V power supply
> 28-pin DIP
>
> The SP1000 is a 5V 28-pin chip which can be configured for both speech
> recognition and synthesis. It can be used as a memory-mapped I/O
> device. It has to be used with analog signal conditioning circuitry
> (lowpass and preemphasis filter, variable gain amplifier,
> anti-aliasing filter, A/D converter for recognition).