High-frequency energy in speech and voice

言语和声音中的高频能量

• 批准号: 8016048
• 负责人: Brian Bruce Monson
• 金额: $ 3.21万
• 依托单位: UNIVERSITY OF ARIZONA
• 依托单位国家: 美国
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-01-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8016048
• 关键词: Acoustics; Affect; Auditory; Auditory Brain Stem Implants; Behavior; Categories; Characteristics; Child; Cochlear Implants; Cognitive; Communication; Complex; Data Compression; Databases; Detection; Development; Devices; Differential Threshold; Electronics; Environment; Exhibits; Frequencies; Generations; Goals; Hearing; Hearing Aids; Human; Impact evaluation; Internet; Language Disorders; Learning; Literature; Modeling; Modification; Nervous system structure; Noise; Oral cavity; Phonation; Phonetics; Population; Production; Psychological reinforcement; Public Health; Radiation; Relative (related person); Research; Research Project Grants; Rest; Role; Sampling; Science; Sensory; Signal Transduction; Source; Speech; Speech Acoustics; Speech Disorders; Speech Intelligibility; Speech Perception; Stimulus; System; Training Technics; Voice; Voice Disorders; base; design; hearing impairment; insight; novel; public health relevance; relating to nervous system; research study; sensory system; sound; theories

DESCRIPTION (provided by applicant): For years the major focus in speech acoustics has been on the frequency range below approximately 5 kHz. Human speech and the human voice generate acoustical energy up to 20 kHz. Evidence is accruing that high-frequency energy (energy above 5 kHz) in speech and voice contributes to percepts of quality, localization, and intelligibility. The proposed research is intended to be an initial step in the long-range goal of characterizing high-frequency energy in speech, with particular regard for its perceptual role, its potential for modification during speech production, and its generation mechanism. In this study, a database of high-fidelity recordings of talkers will be used for broad acoustical analysis and general characterization of high-frequency energy, as well as specific characterization of phoneme category, speech intensity level, and mode of production by their high-frequency energy content. Directionality of radiation of high-frequency energy from the mouth will also be examined. The recordings will be used for perceptual experiments wherein listeners will be asked to discriminate between speech and voice samples that differ only in high-frequency energy content. Listeners will also be subjected to intelligibility-in- noise tasks with samples that have been modified only in high-frequency content. The combination of these experiments will reveal (1) the ability of human listeners to detect high-frequency energy modification, and (2) the phonetic value of high-frequency energy in speech. PUBLIC HEALTH RELEVANCE: The relevance of this project to public health lies in its efforts to elucidate the effect on human communicative behavior when high-frequency energy in speech is lost or altered, which may be incurred by factors such as hearing loss, noisy environmental conditions, telephony, audio data compression (such as mp3 compression), electronic sound reinforcement, or sound recording and playback. Previous research has already shown that high-frequency energy affects speech intelligibility, word-learning in normal-hearing and hearing-impaired children, speech localization, and qualitative percepts of speech and voice (e.g. 'naturalness'). Thus, this project will provide particularly valuable insight regarding the need for representation of the high-frequency range in augmentative hearing devices, including hearing aids, cochlear implants, and auditory brainstem implants; the results of this project may also impact the evaluation and management of speech, voice, and language disorders, as well as the development of training techniques for the enhancement of speech and voice.

描述（由申请人提供）：多年来，语音声学的主要焦点一直集中在低于约 5 kHz 的频率范围。人类言语和声音产生高达 20 kHz 的声能。越来越多的证据表明，语音和语音中的高频能量（5 kHz 以上的能量）有助于感知质量、定位和清晰度。拟议的研究旨在成为表征语音中高频能量这一长期目标的第一步，特别是其感知作用、其在语音产生过程中的修改潜力及其生成机制。 在这项研究中，说话者高保真录音数据库将用于广泛的声学分析和高频能量的一般表征，以及音素类别、语音强度水平和高频能量产生模式的具体表征。频率能量含量。还将检查来自口腔的高频能量辐射的方向性。这些录音将用于感知实验，其中听众将被要求区分仅在高频能量含量方面不同的语音和语音样本。听众还将接受噪声清晰度任务，其中的样本仅在高频内容中进行了修改。这些实验的结合将揭示（1）人类听众检测高频能量修改的能力，以及（2）语音中高频能量的语音值。 公共健康相关性：该项目与公共健康的相关性在于其努力阐明当语音中的高频能量丢失或改变时对人类交流行为的影响，这种影响可能是由听力损失、嘈杂的环境条件等因素引起的、电话、音频数据压缩（例如mp3压缩）、电子扩声或声音录制和播放。先前的研究已经表明，高频能量会影响语音清晰度、正常听力和听力受损儿童的单词学习、语音定位以及语音和声音的定性感知（例如“自然度”）。因此，该项目将为增强听力设备（包括助听器、人工耳蜗和听觉脑干植入物）中高频范围的表现需求提供特别有价值的见解；该项目的结果还可能影响言语、声音和语言障碍的评估和管理，以及增强言语和声音的培训技术的开发。