Abstract: A synchronized output speech synthesizer having a first memory, a speech synthesizer, a second memory, a multiplexer and a latch device. The speech data of the first memory is read by the speech synthesizer and simultaneously, the latch device through the multiplexer reads the signal data of the second memory. The speech synthesizer and latch device output the voice and status signal in synchrony, while the speaker and the latch device simultaneously output the speech data and the status signals. Therefore, synchronized output of voice and status signals can be carried out, and under conditions of uninterrupted voice synthesis, synchronized status signals can be outputted, so that voice can be continuously and smoothly outputted.

Abstract: A speech synthesizer and a method of synthesizing speech are provided. The speech synthesizer includes a memory unit having an interrupt vector section, a voice list section, a control program section, and a speech data section; a voice list pointer for pointing to the address in the voice list section of the memory unit where data are to be retrieved; a start address register whose content represents the starting address of a specific segment of waveform data stored in the speech data section of the memory unit; a program counter whose output is used to gain access to specific addresses in the control program section of the memory unit; a synthesizer, coupled to the memory unit, for synthesizing the retrieved speech data from the memory unit into voice data; and an interrupt controller coupled to the synthesizer, which is capable of actuating the execution of an synthesis interrupt service routine stored in the memory unit in response to an interrupt signal generated by the synthesizer.