Files with talk file extension might also be found as old text to speech data files. Seems very old format.
TALK file extension - Text to speech data
What is talk file? How to open talk files?
File type specification:
The talk file extension is reported to have been used for some older text to speech data file. No further information about this file type could be found.
MIME types:
text/x-speech
plugin/talker
x-plugin/x-talker
This talk file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.