Posting here, as this has more to do with the human voice itself than electronics.
I am planning to build a simple human voice synth, but I couldn’t find much on the internet. The overall plan is to generate a signal, pass it through about 10-ish bandpass filters and adjust each filter’s gain to create speech.
For my source signal, I found this, which seems to be the sound generated by the larynx before passing through the throat and mouth. From what I read online, a relaxation oscillator or a sawtooth wave seems to be a close approximation of it.
One of the things I am struggling to find is the frequency components corresponding to certain phonetics. Though I am pretty sure it is either because I can’t find the right keywords or because SEO ruined the internet.
US2121142A is the patent for Voder, the first human voice synthesizer by bell labs. It has a similar structure to what I’ve been modeling in my head. Should I just use the frequency values here for my bandpass filters or should I use something else?
No need to call, I’m sure there are plenty of papers published if you use Google scholar or similar. Or thesis projects on github, etc.
There are, but there’s no harm in calling or e-mailing: It could be the start of a collaboration.