This is... going to be a fairly messy OP because honestly I barely know anything about this, but I figured it's at least worth a thread so we could catalogue all the different voice synthesizer programs somewhere on VVN. (Also, it's already had a few crowdfunding campaigns, which I'll get to in a moment.)
Despite the similar names, it is NOT the same thing as CoeFont Studio, which has its own thread here.
Coestation seems to be a speech synthesizer not unlike VOICEROID, CeVIO, A.I.VOICE, CoeFont, etc. What separates Coestation from the rest of these seems to be that you'll be able to use your voices from either your PC or smartphone. You can listen to examples of it on the website here.
CoeAvatar is... I think it's similar to A.I.VOICE Junior where individuals can apply for creating a tts of their own with Coestation's synthesis. Take that with a grain of salt; it's hard finding anything about this, oddly enough. They debuted this project by aiming to crowdfund three different Vtubers to become CoeAvatars (not unlike Tange Kotoe and A.I.VOICE Junior): Kurosu Yahiro, Shirogane Moka, and Washimiya Syuu. It's a much cheaper alternative than even A.I.VOICE Junior's plan - Tange Kotoe's goal was 2 million yen, Adachi Rei's goal was 3.5 million yen... Moka and Syuu's goals were 200,000 yen while Yahiro's was 300,000 yen.
Oh, all of these are masculine voices, too.
Kurosu Yahiro's Crowdfunding Page
Shirogane Moka's Crowdfunding Page
Washimiya Syuu's Crowdfunding page
All of these campaigns have already ended as of this posting. Yahiro and Moka reached their goals (Yahiro earned 1 million yen and Moka earned 230,500 yen total) while Syuu's ended being only 2% funded (5,500 yen raised).
Here are some videos demonstrating their voices (taken from their crowdfunding pages):
Overall, this seemed to fly under most peoples' radars, even on the JP side of the community. The fact that they're all male - or at least have masculine voices - may have something to do with it given the lack of interest / the historical pattern of masculine voices not doing well, but I think it's mostly just that... people just didn't know this was happening, me included until literally today.
So the purpose of the thread is basically just to post news and stuff if anything relevant happens. I don't think this will interest most people, but it's good to catalog regardless if anyone comes across anything.
Despite the similar names, it is NOT the same thing as CoeFont Studio, which has its own thread here.
Coestation seems to be a speech synthesizer not unlike VOICEROID, CeVIO, A.I.VOICE, CoeFont, etc. What separates Coestation from the rest of these seems to be that you'll be able to use your voices from either your PC or smartphone. You can listen to examples of it on the website here.
CoeAvatar is... I think it's similar to A.I.VOICE Junior where individuals can apply for creating a tts of their own with Coestation's synthesis. Take that with a grain of salt; it's hard finding anything about this, oddly enough. They debuted this project by aiming to crowdfund three different Vtubers to become CoeAvatars (not unlike Tange Kotoe and A.I.VOICE Junior): Kurosu Yahiro, Shirogane Moka, and Washimiya Syuu. It's a much cheaper alternative than even A.I.VOICE Junior's plan - Tange Kotoe's goal was 2 million yen, Adachi Rei's goal was 3.5 million yen... Moka and Syuu's goals were 200,000 yen while Yahiro's was 300,000 yen.
Oh, all of these are masculine voices, too.

Kurosu Yahiro's Crowdfunding Page
Shirogane Moka's Crowdfunding Page
Washimiya Syuu's Crowdfunding page
All of these campaigns have already ended as of this posting. Yahiro and Moka reached their goals (Yahiro earned 1 million yen and Moka earned 230,500 yen total) while Syuu's ended being only 2% funded (5,500 yen raised).
Here are some videos demonstrating their voices (taken from their crowdfunding pages):
Overall, this seemed to fly under most peoples' radars, even on the JP side of the community. The fact that they're all male - or at least have masculine voices - may have something to do with it given the lack of interest / the historical pattern of masculine voices not doing well, but I think it's mostly just that... people just didn't know this was happening, me included until literally today.
So the purpose of the thread is basically just to post news and stuff if anything relevant happens. I don't think this will interest most people, but it's good to catalog regardless if anyone comes across anything.