The Voder, the First Machine to Create Human Speech
atlasobscura.com
atlasobscura.com
The title comes from a difficulty in synthesizing the phrase "How to Recognize Speech" and having it come out "How to Wreck a Nice Beach". :)
SIGSALY was a highly classified method of coding, one-time pad encrypting, and decoding voice transmissions during World War II. Churchill used it to communicate with the US and Allied commanders during wartime.
"A recording of Churchill talking to Roosevelt is on display in the British Parliament Building. It is very interesting to hear since the timing of the recorded signal occasionally varies from that received. The spoken words were added to a very loud Beethoven recording which can occasionally be heard."
So if I ever visit the UK I know where to go.
Some from wikipedia:
.. the bellows-operated "acoustic-mechanical speech machine" of Wolfgang von Kempelen of Pressburg, Hungary, described in a 1791 paper. This machine added models of the tongue and lips, enabling it to produce consonants as well as vowels. In 1837, Charles Wheatstone produced a "speaking machine" based on von Kempelen's design, and in 1846, Joseph Faber exhibited the "Euphonia". In 1923 Paget resurrected Wheatstone's design.
If anyone has access to such training material, please contact me: The_Amazing_Dr_T (remove underlines) at gmail dot com
It seems like you'd need samples of the individual sound channels from the machine, and then a program to map the text to timed signals to produce the different sounds, along with pitch shifts, etc. Something similar to MIDI, maybe (vibrato, pitch shift, and the different sounds as different instrument numbers seems like it would work).
https://soundcloud.com/acadiamusic/she-saw-me
Sample starts at 1:35.
Maybe a fitting name for it would be Dorth Voder.
More seriously, here's an amazingly small JS speech synth based on a similar principle (formant synthesis), and thus it has the same "robotic" sound: