On my journey to replicate one of the robotic voices in the Sonic CD OST, I turned to a Dectalk emulator and managed to produce a voice that's somewhat similar!
https://sndup.net/h2g3/
For anyone who wants to try the dectalk emulator out, it's available at https://archive.org/details/dectalk #retrocomputing
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Though I do notice that the voice and Dectalk pronounce "sonic" a bit differently. maybe I'm just hearing it wrong?
