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A Study on Speech Rate Control of Common Japanese Utterances Based on an Objective and Quantitative Method

基于客观定量方法的日语常用话语语速控制研究

基本信息

批准号：
09680404
负责人：
OHNO Sumio
金额：
$ 1.66万
依托单位：
Science University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09680404/
关键词：
speech rate control local change of speech rate relative local speech rate speech synthesis word accent type syntactic role emphasis 局所発話速度比

项目摘要

The aim of the project is to investigate the changes of the local speech rate due to various factors and to derive rules for speech rate control for high-quality speech synthesis. The main results obtained for the two-year period (1997 and 1998) are as follows.(1) Development of software tools for efficient analysis of a large amount of speech data, and for changing the local speech rate of an utterance according to a given local speech rate profile.(2) Effect of utterance size on the local speech rateComparison of local speech rates of utterances of a 'bunsetsu' phrase both in isolation and in sentence context revealed that the differences are greater toward the end of the sentence, and the pattern of change is affected by the syntactic role of the bunsetsu in question.(3) Effect of global speech rate on the local speech rateAnalysis of the effect of changes in the global speech rate upon the local speech rate revealed that an increase in global speech rate tends to cause an increase in the local speech rate at the earlier portion of a syllable, while a decrease in global speech rate tends to cause a decrease in the local speech rate at the latter portion of a syllable.(4) Effect of the word accent type on the local speech rateAnalysis of the local speech rate of words with almost identical segmental structures but different word accent types revealed that the accent type has a significant influence on the time pattern of the local speech rate.(5) Effects of emphasis on the local speech rateAnalysis of the local speech rate of utterances of the same sentence with different stress positions revealed that the emphasis tends to cause a decrease in the local speech rate at the stressed part of the utterance, and the local decrease is accompanied by a change in the accent component in the fundamental frequency contour.

该项目的目的是调查由于各种因素造成的本地语音速率的变化，并推导出用于高质量语音合成的语音速率控制规则。两年期（1997年和1998年）取得的主要成果如下。(1)开发软件工具，用于有效分析大量语音数据，并用于根据给定的本地语音速率分布改变话语的本地语音速率。(2)话语大小对局部语音率的影响一个“文色”短语的话语在孤立和句子上下文的局部语音率比较显示，差异更大的句子结束时，和变化的模式是受句法作用的文色的问题。(3)全局语速对局部语速的影响分析了全局语速的变化对局部语速的影响，发现全局语速的增加往往导致音节前半部分局部语速的增加，而全局语速的降低往往导致音节后半部分局部语速的降低。(4)词重音类型对局部语速的影响通过对音段结构几乎相同但词重音类型不同的词的局部语速的分析，发现重音类型对局部语速的时间模式有显著影响。(5)重音对局部语速的影响对同一句不同重音位置的话语的局部语速分析表明，重音往往会导致话语重音部分的局部语速降低，而局部语速的降低伴随着基频轮廓中重音成分的变化。