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How it all works:
The Speech Synthesizer is patched in memory so that MWROBOT gets back control after the phrases have been converted to a set of parameters, giving information about pitch, three times formant frequency and level and noise frequency/level. This list is then converted to a similar list that is dumped to the Microwave. The MW list has always 61 entries and does not provide pitch information, that is the basic difference. The format of the parameter set that forms a single wave is very simple:
This list is given 61 times in the eight waves that are used by the Wavetable.
Comprehensive documentation by Dr. Georg Müller from 2002: