Incorporation of the Time-Scale Modification of Speech Processing System into Learning and Instructional System for Listening Comprehension of a Foreign Language

讨论了将语音信号的时间尺度修改系统（以下简称s处理）有效地整合到教育硬件中。S-processing在教育环境中的应用已经被证明。研究了新的s处理系统应用于同步视觉呈现时的效果。改进后的系统是对语音信号的非线性时间尺度修正，重点关注话语的语音部分和非语音部分。为了阐明发音速率和口语单元长度对外语听力理解的影响而进行的实验表明，使用S-Processing系统减慢发音速率和插入停顿，使用Voice分析系统缩短口语单元，有利于听力理解。增加停顿比降低发音率在理解上有更显著的提高。在语音感知研究的基础上，研究了外语语音识别的过程。对正常言语和s-加工扩展言语的感知单元进行了测量。开发了间隙检测试验，并测量了间隙检测阈值。它们被证明是对听力能力的精确定量衡量。提出了外语语音形式习得模型和词汇获取模型。

Effective incorporation of a system for the time-scale modification of speech signals (henceforth, S-processing) into educational hardware has been discussed.The application of S-processing in the educational setting has been demonstrated.The effect of the new S-processing system when applied to the synchronized visual presentation has been examined.The improved system is nonlinear time-scale modification of speech signals with its focus on the speech and non-speech parts of utterances.The experiment carried with the aim of clarifying the effect of articulation rate and length of spoken unit on foreign language listening comprehension has shown that the slowing of the articulation rate with the S-Processing System, and the insertion of pauses, with the Voice Analyzing System which shortens the spoken unit, facilitated listening comprehension.Increasing pauses yielded more significant improvement in comprehension than decreasing the articulation rate.Processes of foreign language speech recognition have been considered on the basis of studies on speech perception.Perceptual sense unit has been measured both in normal and s-processed expanded speeches.Gap detection tests have been developed and gap detection threshold has been measured. They have turned out to be an accurate quantitative measure of listening ability.An acquisition model of a phonetic form in a foreign language and a lexical access model have been proposed.