Klatt合成器定点实时化及其在汉语文语转换中的应用  

FIXED-POINT REAL-TIME KLATT SYNTHESIZER AND THE APPLICATION IN CHINESE TEXT-TO-SPEECH SYSTEM

作　　者：许可[1] 谢咏圭[1] 

机构地区：[1]北京师范大学无线电电子学系,中国科学院空间科学与应用研究中心

出　　处：《北京师范大学学报（自然科学版）》1995年第3期317-324,共8页Journal of Beijing Normal University(Natural Science)

基　　金：国家"八五"重点攻关课题

摘　　要：通过对Ｋｌａｔｔ合成器通道浮点范围的研究和实验，确定了采用单双精度整数混合使用的定点算法来模拟Ｋｌａｔｔ合成器的浮点运算，以便在ＴＭＳ３２０Ｃ２５上实现实时合成，同时对原合成器在６个方面进行了改进。改进后的合成器一方面满足了实时合成的要求，实时合成的结果基本上达到了原算法的精度和动态范围；另一方面为汉语规则合成提供了更为有效的手段，文语转换系统的硬件部分由一台３８６微机和一块ＴＭＳ３２０Ｃ２５－Ｄ型高速信号处理板组成的主从式系统构成，系统中考虑了汉语中的声调规则、轻声规则等５种韵律规则，提高了系统的自然度和可懂度。Based on the research of the dynamic range of the cascade/parallel channels and a large number of experiments, single-double precision integer are uesd together to simulate the Klatt synthesizer's floating-point operation. The Klatt synthesizer has been improved in six aspects. The new synthesizer attains approximately the original preasion and dynamic range, and provides a powerful kind of means for Chinese synthesis by rule, and makes it possible to realize real-time synthesis on TMS 320C 25. A Chinese text-to-speech system has been developed on a 386 microcomputer with a high speed digital signal processing board TMS 320C 25-D. The intelligibility and naturalness of the system are increased by a consideration of five phonological rules.

关 键 词：语音合成 文语转换 Klatt合成器 汉语 合成器 

分 类 号：TN912.33[电子电信—通信与信息系统]