Using Custom PiperTTS Voice with Calibre Read Aloud

Hi everyone,

I’m visually impaired and really appreciate the new PiperTTS voices available in Calibre’s Read Aloud feature. I’d like to take it a step further and use a custom created voice in my native language.

Is there currently a way to use custom PiperTTS voices with the Read Aloud feature in Calibre?

Thanks in advance for any help or guidance!