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MEA8000 Figures - CPCWiki

Last modified on 23 January 2010, at 01:46

MEA8000 Figures

Revision as of 01:46, 23 January 2010 by Nocash (Talk | contribs) (→‎Filters and Noise (English))

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Figures for the MEA8000 Speech chip. The Figures were found at http://vesta.homelinux.net/site/wiki/le_synthetiseur_vocal_mea_8000.html - that webpage also contains further (French) info.

Filters

Overall

Parameter Translation

DAC

External Amplifier Schematics

Control Signals

Interpolation

Software Examples

Pin Outs

Filters and Noise (English)

This image was found on Page 77 in a documented called "The Typophone: A Talking Typewriter", Proefschrift from "Johannes Norbertus Kroon" at "Technische Universiteit Eindhoven". The document refers to tools for blind people in general, and contains some details on the MEA8000 chip.
Interresting is that Noise seems to be generated by some ADD/MULTIPLY operations.
And, the Normalization (N) stuff implies that there are some (Normalization, means what... Floating Point? Saturation? Interpolation?) adjustments done at various different locations.