.DCT File Extension

Variable codec audio format designed for dictation (recording human speech); includes a dictation header and can be encrypted, which may be required by medical confidentiality laws.

A DCT file contains textual notes or memos developers have added regarding a Microsoft Visual FoxPro Database (.DBC file). It stores additional information or comments about the structure or content of the database, which can be helpful for documentation purposes or developers working with the data. DCT files are saved alongside DBC database files.

Word dictionary used by AutoCAD, a CAD productivity application; stores a list of words used by the spell checker for identifying misspelled words; can be extended with custom user dictionaries, which are stored in .CUS files.

Cheats file used by DeSmuME, a Nintendo DS (NDS) emulator; contains cheats, such as infinite health, infinite armor, infinite ammo, extra lives, unlocked weapons, extra points, and secret levels, for NDS games that can be emulated by DeSmuME.

A DCT file may also be a video used by some Electronic Arts video games, including Need for Speed II. It contains a movie played within the game. DCT files are quite uncommon, so most popular media players cannot play them.