[jackie_w]

Originally Posted by musickid

It may not bring much closure, but for anyone else facing this issue - the last 32-bit version of Calibre works fine with 32-bit TTS voices.

https://download.calibre-ebook.com/5.44.0/

I've found it easier to use calibre 6.x for my main calibre and to also have a calibre Portable 5.44 installation on the PC because calibre Portable pre-v6 was automatically 32bit. If I want to listen to a 32bit-only Voice I just add that book to the Portable installation.

If you bought your Voices from NextUp I think they believe they are only sold to you for use in their TextAloud app. (Given the cost I don't really care what they believe). Last time I updated my copy of TextAloud it was a 32bit-only app. Has that changed?

Fortunately the Ivona Voices install themselves in both the relevant parts of the Windows registry:

• 64bit: [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Speech\Voice s\Tokens]
• 32bit: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\ SPEECH\Voices\Tokens]

Perhaps it's because they are newer. My copy of AT&T Mike dates back to 2003. Was 64bit even a thing back then? I've never been able to make my Acapela Voices work in any app other than TextAloud but the Nuance/ScanSoft/RealSpeak ones work fine in 32bit calibre Portable v5.44