Auditory Information Processing of Temporal Modulation

时间调制的听觉信息处理

• 批准号: 7020653
• 负责人: STANLEY E SHEFT
• 金额: $ 18.07万
• 依托单位: LOYOLA UNIVERSITY OF CHICAGO
• 依托单位国家: 美国
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-04-01 至 2008-03-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7020653
• 关键词: auditory discrimination; auditory pathways; biological information processing; biological signal transduction; clinical research; hearing; neural information processing; sensory signal detection; sound perception; speech recognition

DESCRIPTION (provided by applicant): The objective of this project is to investigate information processing of temporal modulation by the auditory system. That is, the goal is to better understand the method and manner by which information conveyed by modulation is extracted and utilized. The proposed work focuses on three aspects of information processing of temporal modulation: complex modulation perception, modeling, and processing of the modulation in speech. Using detection, discrimination, and speech-intelligibility paradigms, the proposed experiments study both envelope and fine-structure modulation and also the interaction of the two time varying functions. To establish a context of sound-source processing for this study, proposed experiments evaluate the perception of complex patterns of modulation (a characteristic of real-world sources), use a source attribute as a response identifier in many procedures, and examine the effects on performance of the interaction among multiple sources of modulation information. Detection and discrimination experiments are designed to allow for direct evaluation of models of auditory processing of complex modulation. The speech studies are based on signal-processing algorithms that manipulate the modulation in speech. The intent of the speech studies is to both gain insight into the role of temporal modulation in speech perception and to suggest processing schemes that may enhance the performance of prosthetic devices. Specifically, speech results obtained with combined envelope and phase modulation may suggest approaches to compensate for the reduced dynamic range and spectral transposition of modulation information with cochlear implants. Multi-message conditions are studied to evaluate the extent to which modulation information can be segregated by source and still utilized in a meaningful way.

描述（由申请人提供）：该项目的目标是 研究听觉的时间调制的信息处理 系统。也就是说，目标是更好地理解方法和方式 提取并利用通过调制传达的信息。这 拟议的工作重点关注时间信息处理的三个方面 调制：复杂的调制感知、建模和处理 语音中的调制。利用检测、辨别和 语音清晰度范式，所提出的实验研究了包络 和精细结构调制以及两个时变的相互作用 功能。为了为本研究建立声源处理的背景， 提出的实验评估复杂调制模式的感知 （现实世界源的特征），使用源属性作为响应 许多程序中的标识符，并检查对性能的影响 多个调制信息源之间的交互。检测和 歧视实验旨在直接评估 复杂调制的听觉处理模型。言语研究是 基于操纵语音调制的信号处理算法。 演讲研究的目的是深入了解演讲的作用 语音感知中的时间调制并提出处理方案 可以增强假肢装置的性能。具体来说，演讲结果 通过组合包络和相位调制获得的结果可能会建议一些方法 补偿动态范围和光谱转置的降低 人工耳蜗的调制信息。多消息条件是 研究评估调制信息可被接收的程度 按来源隔离，但仍以有意义的方式使用。