TTSBuilder 5.5.39 that could have been downloaded from our website for free. The program lies within Education Tools, more precisely Languages. This program was originally produced by Research Lab Inc. The following version: 5.5 was the most frequently downloaded one by the program users. TTSBuilder is suitable for 32-bit versions of Windows XP/Vista/7/8/10/11.
From the developer:
TTSBuilder allows engineers to create their own Text To Speech Voice or Language using High Quality Open Festival Speech Synthesis Research. A complete step-by-step manual for such a creation is included in the retail version. The evaluation version has one such British Voice created using the mentioned step-by-step techniques.
You may want to check out more software, such as VocabOne 02, Declan's Spanish FlashCards or Selingua Columns, which might be similar to TTSBuilder.