Improve the sound quality

[ill13]

It would be very good if it could improve the sound quality, because now it is still distorted here and there and does not "read" clearly.

Originally posted by @mykeehu in https://github.com/ill13/SpeakLocal/issues/3#issuecomment-1721870437

[ill13]

More audio options added.

[mykeehu]

The sound is better. However, is it possible that the JSON encoding is not decoded back to the sound? Try this text: Elfutok a f\u00e1hoz, ahol megbesz\u00e9lt\u00fck, hogy tal\u00e1lkozunk, \u00e9s elkezdek sz\u00e1molni t\u00edzig. Amikor el\u00e9rem a t\u00edzes sz\u00e1mot, ki\u00e1ltom: "Miki, megtal\u00e1ltalak!"

Original text this: Elfutok a fához, ahol megbeszéltük, hogy találkozunk, és elkezdek számolni tízig. Amikor elérem a tízes számot, kiáltom: "Miki, megtaláltalak!"

It seems to me that it reads the codes, not decodes the accented letters before TTS.

[ill13]

I'll look into improving pronuncation, however that may be well out of reach for the OS built-in TTS engines.

[mykeehu]

Okay, I found a solution with the help of a friend, and it now returns all unicode characters correctly.

Need replace line 66 to this and fine with hungarian text too:

string = re.sub(r'[^\w\s-]', '', string).title()

[ill13]

Added string = re.sub(r'[^\w\s-]', '', string).title() and commented out the earlier regex bit.