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，语音声学的主要重点一直放在低于5 kHz以下的频率范围上。人类的言语和人类的声音产生高达20 kHz的声学能量。证据表明，语音和语音中的高频能量（高于5 kHz的能量）有助于对质量，本地化和清晰度的感知。拟议的研究旨在成为表征语音高频能量的远程目标的第一步，特别考虑其感知作用，其在语音生产过程中的修改及其生成机制。 在这项研究中，会说话者的高保真记录数据库将用于广泛的声学分析和高频能量的一般表征，以及通过高频能量含量的音素类别，语音强度水平和生产方式的特定表征。还将检查高频能量的辐射方向。这些录音将用于感知实验，其中要求听众区分语音和语音样本，而语音样本仅在高频能量含量上有所不同。听众还将通过仅在高频内容中修改的样本进行噪声任务进行清晰的噪声任务。这些实验的组合将揭示（1）人类听众检测高频改变的能力，以及（2）语音中高频能量的语音价值。 公共卫生相关性：该项目与公共卫生的相关性在于其努力在丢失或改变语音中的高频能量时阐明对人类交流行为的影响，这可能是由听力损失，嘈杂的环境条件，电话，电话，音频数据压缩（例如MP3压缩），电子声音增强声音，录音和声音录音和播放和播放等因素所产生的。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文字学习，语音本地化以及对语音和声音的定性感知（例如，“自然”）。因此，该项目将提供特别有价值的见解，内容涉及在包括助听器，耳蜗植入物和听觉脑干植入物在内的增强听力设备中高频范围的需求；该项目的结果还可能影响语音，语音和语言障碍的评估和管理，以及开发培训技术以增强语音和语音。