VOWEL PERCEPTION

本研究的总体目标是规范 动态（时变）声学信息， 在正常的语境中，也就是说，当 它们在连续语音中与辅音共同发音。 的 研究涉及一个非常广泛的问题， 语音和听力研究的重要性：什么是声学 收听者使用语音信号中的信息来识别 语音信息？“传统理论和许多当前 元音感知模型强调静态声学的作用， “目标”作为元音身份信息的主要来源。 然而，目前的许多研究表明， 关键是在不断变化的 音节的声学模式（格式轨迹），当他们试图 来识别共同发音的元音 将进行四种类型的研究：1）感知研究 与电子修改的自然语音材料将是 进行调查的感知元音在不同的 语音背景和不同的语音速率。 2)替代 格式轨迹的感知表示将是 研究了它们在解释 共同发音元音的感知。 3)设置轨迹格式 合成辅音-元音-辅音音节将是 被操纵来测试关于知觉的替代假设， 光谱和时间参数特征相关 “风格的改变”。 4)协同发音的知觉研究 德语元音（由母语和非母语人士）将被 进行评估，以评估 关于动态声学信息在 元音的感知

The overall objective of this research is the specification of the dynamic (time-varying) acoustic information that is used by listeners to identify vowels in their normal context, that is, when they are coarticulated with consonants in continuous speech. The research speaks to a very broad questions of continuing importance in speech and hearing research: What acoustic information in the speech signal is used by listeners to identify the phonetic message?" Traditional theories and many current models of vowel perception emphasize the role of static acoustic "targets" as the major source of information about vowel identity. However, much current research has shown that listeners rely critically on dynamic information that is available in the changing acoustic pattern of syllables (format trajectories) when they try to identify coarticulated vowels. Four types of studies will be performed: 1) Perceptual studies with electronically-modified natural speech materials will be conducted to investigate the perception of vowels in different phonetic contexts and at different speech rates. 2) Alternative auditory-perceptual representations of format trajectories will be studied to examine their relative efficacy in accounting for the perception of coarticulated vowels. 3) Format trajectories in synthetic consonant-vowel-consonant syllables will be manipulated to test alternative hypotheses about the perceptual relevane of spectral and temporal parameters characterizing "style of change". 4) Studies of the perception of coarticulated German vowels (by native and non-native speakers) will be conducted to assess the generality across languages of the findings about the role of dynamic acoustic information in the perception of vowels.