A w2speech files can be found as some of the data files for Witcher 2: Assassins of Kings RPG game. Contains audio (speech) for in-game dialogues.
Software that open w2speech file
W2SPEECH file extension - The Witcher 2: Assassins of Kings speech data
What is w2speech file? How to open w2speech files?
File type specification:
The w2speech file extension is also used for one of the game files in The Witcher 2: Assassins of Kings RPG game.
These files seems to be contain speech used in the in-game dialogues. Probably separate file for every language. Looks like a variant of MPEG files.
The default software associated to open w2speech file:
The Witcher 2: Assassins of Kings 
Company or developer:
CD PROJEKT
The Witcher 2: Assassins of Kings is an action role-playing hack and slash video game developed by Polish studio CD Projekt RED for Microsoft Windows, Xbox 360, OS X and Linux. The game was released internationally for Microsoft Windows in 2011 and for Xbox 360 in 2012.
List of recommended software applications associated to the .w2speech file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open w2speech file, edit w2speech file, convert w2speech file, view w2speech file, play w2speech file etc. (if exist software for corresponding action in File-Extensions.org's database).
Unspecified and all other actions for computer programs working with w2speech file - The Witcher 2: Assassins of Kings speech data
Click on the software link for more information about The Witcher 2: Assassins of Kings. The Witcher 2: Assassins of Kings uses w2speech file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).
