# Application Programming Interfaces (APIs)

DECtalk Software supports two text-to-speech APIs: the DECtalk Software API (DAPI) and the Microsoft Speech API (SAPI) [Windows 95/98/ME/NT/2000 only].

DAPI is a custom extension to the MPC (Multimedia PC) API specified by the Windows operating system. The DAPI function set gives you a flexible method of using and controlling DECtalk Software functionality from within your application. These functions perform a wide range of tasks associated with text-to-speech systems. See DECtalk Software API Calls for the complete list of DAPI functions.

See Supported SAPI Functions (Windows 95/98/ME/NT/2000) for a list of the SAPI functions supported by DECtalk Software. For more information about SAPI, refer to Microsoft documentation and the Microsoft web site.