@kovidgoyal and others, can the coqui tts
https://github.com/coqui-ai/TTS be used as speech synthesizer in read aloud for linux systems as the espeak one doesnt sound natural.
Secondly, the browser tts extensions also cant access the content to read while reading in browser over content server of calibre. Basically any good/natural speech synthesis doesnt seems to be an options for linux systems.
