SPEECH SYNTHESIZER

In a speech synthesizer designed so that natural speech is chopped at constant intervals of time and characteristic parameters of the speech are extracted from the chopped speech and used for synthesis of speech, the number of bits of a characteristic parameter per analytical frame is not changed, but the interval of time of one analytical frame is changed to change the amount of information per unit time, while the time interval of one synthesis frame of the synthesizer is changed with the time interval of one analytical frame so that the time interval of one frame upon analysis and the time interval of one frame upon synthesis are made equal, whereby a single speech synthesizer can handle speech parameters of different amounts of information.