Contributions of Auditory Stream Formation to Speech Perception

听觉流形成对言语感知的贡献

• 批准号: 397774634
• 负责人: Professor Dr. Steven van de Par
• 金额: --
• 依托单位: Abteilung Medizinische Physik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/397774634?language=en
• 关键词: Contributions; Auditory; Stream; Formation; Speech

The aim of this proposal is to get a detailed and quantitative understanding of the contribution of monaural and binaural grouping cues to speech intelligibility in multi-talker settings. For this purpose dedicated stimulus manipulations will be applied to multi-talker settings such that certain cues that may contribute to auditory stream segregation are rendered ineffective. The further aim will be to see to what extent speech intelligibility phenomena can be understood in a two-stage conceptual frame work. In the first stage it is assumed that speech intelligibility requires the availability of so-called glimpses, signifying small time-frequency intervals which in principle can be resolved temporally and spectrally by the auditory system and where the target speech has a favorable local signal-to-noise ratio. Although these glimpses are available in principle, because they can be resolved by the peripheral auditory system, it is still a major challenge for the more central auditory system to select the glimpses that belong to the target speaker. In the two-stage conceptual framework, monaural and binaural auditory grouping cues are assumed to be used in the second stage to accomplish this selection. In this study we seek to better understand the contribution of several of these grouping cues.

本研究的目的是详细和定量地了解单耳和双耳分组线索对多语环境下语音可理解性的贡献。为此，专门的刺激操作将应用于多说话设置，使某些可能有助于听觉流分离的线索变得无效。进一步的目标将是看到在两阶段概念框架中语音可解性现象可以被理解到什么程度。在第一阶段，我们假设语音的可理解性需要所谓的“瞬变”，即原则上可以由听觉系统在时间和频谱上分辨的小时间-频率间隔，并且目标语音具有良好的局部信噪比。虽然这些瞥见在原则上是可用的，因为它们可以被外周听觉系统识别，但对于更中枢的听觉系统来说，选择属于目标说话人的瞥见仍然是一个主要挑战。在两阶段概念框架中，单耳和双耳听觉分组线索被认为在第二阶段使用来完成这种选择。在这项研究中，我们试图更好地理解这些分组线索中的几个的贡献。