[Feature Request] Tags for Voice Changing

[olandir]

Wanted to add this here just in case.

In the same way you have tags that help distinguish chapters and tags for Meta information, do you think it would be possible to add a feature for tags for voices? Allowing us to switch between different voices by just tagging the text? (Basically once a tag is hit, the voice changes until it sees another tag indicating a voice change)

I think this would be good for customizing audiobooks with multiple voices.

[olandir]

Follow-up.

Because I was really interested in doing this, I decided to create a fork and try adding the feature myself. However, python is not my first language and I'm pretty rusting with coding to begin with, so I used Claude to help me generate and test the code for it. It works, I've tested it extensively but that doesn't mean that the code is perfectly clean (AI after all). I've just made sure to test for every possible error that could come up with it.

I did this using the 1.2.5 (Dec 9) download and so I know it's behind on the most recent commits and I may try to merge these changes later or when you release the next version.

This is basically how voice markers are implemented

This is narrated with the default `voice.`

<<VOICE:bf_alice>>
This section uses British female voice Alice.

<<VOICE:am_fenrir>>
Now we switch to American male voice Fenrir.

<<CHAPTER_MARKER:Chapter Two>>
This chapter continues with Fenrir - the voice persists!

Features Include:

• Voice persistence: Once a voice is set, it continues through subsequent chapters until you change it
• Invalid voice fallback: If a voice name is invalid, Abogen continues with the previous voice and logs a warning
• Case-insensitive: Voice names work in any case (AM_FENRIR, am_fenrir, Am_Fenrir)
• Voice formulas: Mix voices with formulas like <<VOICE:af_heart0.5 + am_echo0.5>>
• GUI support: Use the "Insert Voice Marker" button to quickly add markers

I don't know if anyone else is interested in this feature but if so, maybe it can be added to the main branch, of course I don't blame you if you'd want to review the changes first to make sure there's nothing crazy in them.

[denizsafak]

@olandir hey, we recently updated the main branch and the structure is different now. Is it possible to add this feature to current main branch and open a pull request? I will definitely merge that. Thank you for your contribution, it is a great feature 🙌