Use local TTS with squeezebox on Windows
This page is work-in-progress to summarize the findings of the following community discussion for users hosting openHAB on a M$-Windows operating system [1].
To verify if your system provides decent text-to-speech ability I recommend to download "Balabolka" [2]. Verify that a SAPI 5 voice is available for your language and that it's quality is decent enough.
If the voice quality is not sufficient, or the desired language is missing you may consider a commercial SAPI 5 voice. Only use trial versions until your openHAB TTS is working end-to-end, as I can not know if the solution is compatible with all voices.
One way to use OS-TTS with openHAB (e.g. Squeezebox) is to provide a REST API that will convert a text string to an .mp3 file with the respective spoken text. The software available from [3] provides such an API.
Extract the downloaded .zip package. This will provide you the source code of the utility (can be compiled using M$-VS 2013 community edition) as well as some pre-compiled ready to use files (.\RESTTTS\RESTTTS\bin\Release).
To keep things as simple as possible the tool is a self hosted REST service. This requires elevated rights on your system. Therefore either compile the binaries yourself (after review of the code), or if you use a pre-compiled version make sure you scan it with a recent anti-virus software.
Right-click the "RESTTTS.exe" and execute it as administrator; you should see something similar to this:
...
...