非常高频声音和可听超声波的感官不愉快
Ben Lineton1, Rahma Abdul Rahman Al Balushi1,2, Sian Lloyd Jones3
1Faculty of Engineering and Physical Sciences, University of Southampton, Southampton, SO17 1BJ, United Kingdom.
The Journal of the Acoustical Society of America
|September 6, 2024
概括
非常高频声音 (VHFS) 和超声波 (US) 被认为更不愉快,并且与较低频率相比,其动态范围较小. 这表明,对于发出人类可听到的VHFS/US的设备,需要仔细考虑.
科学领域:
- 声学和精神声学学
- 人类的听觉感知
背景情况:
- 可听到的非常高频声音 (VHFS) 和超声波 (US) 通常被认为比等效感觉水平 (SLs) 的低频声音更不愉快.
- 以前的事证据表明,个人可能会出现与VHFS/美国暴露有关的症状.
研究的目的:
- 量化评估VHFS/US与参考音调相比的感觉不愉快程度.
- 调查报告先前症状 (有症状) 和没有症状 (无症状) 的人之间的听觉感知潜在差异.
主要方法:
- 17名参与者对14,16和18kHz的音调以及1kHz的参考音调的不愉快程度进行了评分.
- 音调在个别匹配的主观声音级别 (10,20,30 dBSL相对于1 kHz) 呈现.
- 参与者根据自己报告的VHFS/美国相关症状史被分为有症状或无症状.
主要成果:
- 对于VHFS/US的声音压力水平,主观声音强度在两组的1kHz音调相比增长得更快,这表明在更高的频率下,动态范围下降.
- 音量匹配的VHFS/US音调被评为明显比1kHz的参考音调更不愉快.
- 在症状和无症状组之间没有观察到不愉快度评级的显著差异.
结论:
- VHFS/US被认为比低频声音更不愉快,即使在声音强度上相匹配.
- 在听觉系统模型中应考虑VHFS/US感知的减少动态范围.
- 发出听觉VHFS/US的设备的设计人员应该考虑到增加的感官不愉快性和减少的动态范围,以减轻对暴露个体的潜在负面影响.
更多相关视频
07:28Psychophysically-anchored, Robust Thresholding in Studying Pain-related Lateralization of Oscillatory Prestimulus Activity
Published on: January 21, 2017
7.0K
07:52Author Spotlight: Advancing Human Brain Modulation – Optimized Protocols for Transcranial Ultrasound Stimulation Experiments
Published on: June 28, 2024
1000
相关概念视频
Sound Intensity Level
4.2K
Humans perceive sound by hearing. The human ear helps sound waves reach the brain, which then interprets the waves and creates the perception of hearing. The loudness of the environment in which a person is located determines whether they can distinguish between different sound sources.
The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and...
The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and...
4.2K
Sensation
537
Sensory receptors are specialized neurons that respond to specific types of external stimuli, initiating the process known as sensation. This occurs when sensory input, such as light entering the eye, is detected by these receptors, causing chemical changes in the cells of the retina. These cells then convert the sensory stimulus into action potentials that are transmitted to the central nervous system, a process termed transduction.
Absolute thresholds can quantify the sensitivity of sensory...
Absolute thresholds can quantify the sensitivity of sensory...
537
Ultrasonography
4.4K
Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called...
During an ultrasonography procedure, a handheld device called...
4.4K
Perception of Sound Waves
4.4K
The human ear is not equally sensitive to all frequencies in the audible range. It may perceive sound waves with the same pressure but different frequencies as having different loudness. Moreover, the perception of sound waves depends on the health of an individual's ears, which decays with age. The health of one's ears may also be affected by regular exposure to loud noises.
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
4.4K
Hearing
52.0K
When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
52.0K
Perceiving Loudness, Pitch, and Location
203
The human brain perceives pitch through two primary mechanisms reflected in place theory and frequency theory. Each mechanism describes how sound waves are interpreted as specific pitches by the brain, offering insights into the intricate processes of auditory perception.
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by...
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by...
203
