Speect Engine C API

The engine is completely independent of any language or waveform generation modules, and is solely responsible for the loading of voices and their associated data and plug-ins, and controlling the synthesis process. The engine is not dependent on any external libraries, and provides lower level functionality to the plug-ins. The engine consists of the base system and the object framework. The base system provides a low level library to the following modules:

• standard defines/macros as well as build time definitions,
• abstract data types (lists, buffers, hash tables),
• utilities (memory allocation, byte-swapping, timing, fundamental types, versioning, math and system path functions),
• error handling, debugging and logging,
• platform independent concurrency abstraction,
• UTF-8 string handling (character and string level functions, printing functions and regular expressions),
• and an object system.

The object system allows an object-oriented programming approach to the higher level libraries implemented in the object framework. These higher level libraries provide the following modules:

• containers (map, list),
• data sources and data serialization,
• heterogeneous relation graphs (HRGs) (for internal utterance representation),
• utterance and feature processors,
• plug-in manager,
• and a voice manager.