It uses a mathematical sound algorithm to control an internal five channel sound synthesiser to generate on-the-fly, unlimited vocabulary speech synthesis and complex sound generation.
The SpeakJet is programmed with 72 speech elements (allophones), 43 sound effects and 12 DTMF Touch Tones. Through the selection of these sounds and in combination with the control of the pitch, rate, bend and volume parameters, the user has the ability to produce unlimited phrases and sound effects, with thousands of variations, at any time.
The SpeakJet can be controlled simultaneously by voltage changes on any one of its eight Event Input lines, and by a single I/O Line from a CPU (such as the OOPic, Basic Stamp, BasicX or Brainstem) allowing for both CPU-controlled and Stand-Alone operations.
Other features include an internal 64 byte input buffer, internal programmable EEPROM, three programmable outputs, and direct user access to the internal five channel sound synthesiser.