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An Exploratory Study of Cervical Vestibular-Evoked Myogenic Potential in Users of Personal Listening Devices. 个人听力设备使用者颈前庭诱发肌源性电位的探索性研究。
IF 0.7 4区 医学
Noise & Health Pub Date : 2023-07-01 DOI: 10.4103/nah.nah_13_23
Teja Deepak Dessai, Rashmi J Bhat, Kaushlendra Kumar
{"title":"An Exploratory Study of Cervical Vestibular-Evoked Myogenic Potential in Users of Personal Listening Devices.","authors":"Teja Deepak Dessai, Rashmi J Bhat, Kaushlendra Kumar","doi":"10.4103/nah.nah_13_23","DOIUrl":"10.4103/nah.nah_13_23","url":null,"abstract":"<p><strong>Context: </strong>The use of personal listening devices (PLDs) is becoming increasingly popular, particularly among young people. Numerous studies have demonstrated that being exposed to PLDs can have adverse effects on the auditory system. Owing to the similarities between the auditory and vestibular systems, it is possible that the negative effects of PLD use may extend to the vestibular system, an area that has not been extensively studied.</p><p><strong>Aim: </strong>The study aimed to investigate the impact of exposure to PLDs on the vestibular system, specifically the sacculo-collic reflex assessed by the cervical vestibular-evoked myogenic potential.</p><p><strong>Settings and design: </strong>The current study used a cross-sectional study design.</p><p><strong>Materials and methods: </strong>A total of 80 participants were divided into four groups based on the history of PLD exposure. Each group consisted of 20 participants who underwent cervical vestibular-evoked myogenic potential (cVEMP) testing using alternating polarity 500 Hz tone bursts.</p><p><strong>Statistical analysis used: </strong>Analysis of variance (ANOVA) and Bonferroni post hoc test were used to obtain the statistically significant difference among the group.</p><p><strong>Results: </strong>The results showed that the amplitude of p1-n1 of cVEMP was significantly reduced in individuals with longer PLD exposure duration.</p><p><strong>Conclusion: </strong>The study suggests that listening to music through a PLD at high levels of volume controls could be deleterious to the vestibular well-being of an individual. The study highlights the importance of being aware of the adverse effects of using PLDs to prevent potential damage to the vestibular systems.</p>","PeriodicalId":19195,"journal":{"name":"Noise & Health","volume":"25 118","pages":"158-164"},"PeriodicalIF":0.7,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10747808/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41183246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Noise in Preschools and its Psychological and Cardiovascular Effect on Preschool Teachers. 学前噪声及其对幼儿教师的心理和心血管影响。
IF 0.7 4区 医学
Noise & Health Pub Date : 2023-07-01 DOI: 10.4103/nah.nah_11_23
Sonja Brachtl, Michael Trimmel
{"title":"Noise in Preschools and its Psychological and Cardiovascular Effect on Preschool Teachers.","authors":"Sonja Brachtl, Michael Trimmel","doi":"10.4103/nah.nah_11_23","DOIUrl":"10.4103/nah.nah_11_23","url":null,"abstract":"<p><strong>Purpose: </strong>Noise exposure in preschools is cited as one of the main stresses by preschool teachers in surveys worldwide. Hearing-related symptoms as well as physiological stress reactions are often mentioned in this context. Therefore, the aim of the study was to investigate whether the noise has an impact on the cardiovascular activity of the preschool teachers.</p><p><strong>Methods: </strong>The study took place in nine private preschools in Vienna. In the classrooms of 23 preschool teachers stationary noise recordings were conducted and the participants were equipped with 24-hour electrocardiograms (ECGs). Questionnaires on noise-related stress, well-being, stress perception, burnout risk, noise annoyance, and noise sensitivity were provided. Data were described descriptively and correlations and one-way analyses of variance (ANOVAs) with repeated measures were performed.</p><p><strong>Results: </strong>The average sound pressure level in the classrooms during the first four hours was L<sub>Aeq</sub> 74.7 dB(A) (standard deviation [SD] = 1.74). A significant correlation between heart rate and sound pressure level (L<sub>Aeq,4 h</sub>) was found, r = 0.40, P = 0.04 (one-tailed). Noise sensitivity and noise annoyance showed no effect. With increasing sound level classes [≤65 dB(A), 66-75 dB(A), 76-85 dB(A)], the heart rate increased significantly, and the heart rate variability decreased significantly. It was also found that tolerating noise becomes more difficult with increasing length of employment and increasing age.</p><p><strong>Conclusion: </strong>The noise level in classrooms showed an impact on the cardiovascular activity of preschool teachers, which can be considered as an indicator of stress. Measures to reduce noise in preschools are recommended.</p>","PeriodicalId":19195,"journal":{"name":"Noise & Health","volume":"25 118","pages":"121-134"},"PeriodicalIF":0.7,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10747804/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41183251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Prediction of sound radiation using reconstructed acoustic free velocity sources 利用重建声自由速度源预测声辐射
IF 0.7 4区 医学
Noise & Health Pub Date : 2023-05-25 DOI: 10.3397/nc_2023_0057
Xin Yan, D. Herrin
{"title":"Prediction of sound radiation using reconstructed acoustic free velocity sources","authors":"Xin Yan, D. Herrin","doi":"10.3397/nc_2023_0057","DOIUrl":"https://doi.org/10.3397/nc_2023_0057","url":null,"abstract":"A complicated source can be represented by a series of acoustic free velocity sources. The sound pressure at a position in the field can be predicted by summing the products of the acoustic free velocity source strengths and their respective transfer functions. These transfer functions relate the sound pressure in the field to the acoustic source strength. In this research, the sound pressure is measured at positions in the free field and then is used to determine the acoustic free velocity source strengths via an inverse method. The approach is applied to characterize a laboratory source with high directivity. It is then demonstrated that the sources can be used to predict the insertion loss of a barrier introduced to block the source from the receiver.","PeriodicalId":19195,"journal":{"name":"Noise & Health","volume":"34 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88481041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Measuring the sound isolation of doors with ASTM test standards: A case study update 用ASTM测试标准测量门的隔声:一个最新的案例研究
IF 0.7 4区 医学
Noise & Health Pub Date : 2023-05-25 DOI: 10.3397/nc_2023_0152
Devin Clausen
{"title":"Measuring the sound isolation of doors with ASTM test standards: A case study update","authors":"Devin Clausen","doi":"10.3397/nc_2023_0152","DOIUrl":"https://doi.org/10.3397/nc_2023_0152","url":null,"abstract":"At Inter-Noise 2021, a case study was presented involving performance compliance testing conducted at a university's media facility where the test methods of both ASTM E2964 and ASTM E336 were applied to assess the performance of sound-rated door assemblies. This paper provides an update\u0000 on the application of the described ASTM testing standards through follow-up testing that was conducted after field adjustments were made at the media facility. The paper compares the resulting door transmission class ratings to the apparent sound transmission class ratings and examines the\u0000 influence of field adjustments on each rating class.","PeriodicalId":19195,"journal":{"name":"Noise & Health","volume":"467 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76693555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Warehouse and distribution center cold storage outdoor noise assessment 仓库配送中心冷库室外噪声评价
IF 0.7 4区 医学
Noise & Health Pub Date : 2023-05-25 DOI: 10.3397/nc_2023_0143
Mark Storm
{"title":"Warehouse and distribution center cold storage outdoor noise assessment","authors":"Mark Storm","doi":"10.3397/nc_2023_0143","DOIUrl":"https://doi.org/10.3397/nc_2023_0143","url":null,"abstract":"Although \"warehouse\" and \"distribution center\" terms may be used interchangeably by many, cooling load demand for these kinds of storage facilities can vary widely and requires a range of heating, ventilating, and air-conditioning (HVAC) solutions. Furthermore, incorporation\u0000 of on-site cold storage capability can greatly amplify the net cooling load of a facility and its corresponding HVAC system with necessary outdoor-exposed noise-generating sources. This paper presents a sample predictive outdoor noise assessment of a facility that features cold storage, and\u0000 includes key considerations for modeling setup, outdoor noise level assessment with respect to applicable jurisdictional thresholds, and noise reduction recommendations that may be common to warehouses or unique to cold storage facilities.","PeriodicalId":19195,"journal":{"name":"Noise & Health","volume":"11 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85180576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Active Noise Cancellation Health Management Method 主动噪声消除健康管理方法
IF 0.7 4区 医学
Noise & Health Pub Date : 2023-05-25 DOI: 10.3397/nc_2023_01_1039
Frank C. Valeri, Simona De Cesaris, Christoph Kolb, Rolf Schirmacher
{"title":"Active Noise Cancellation Health Management Method","authors":"Frank C. Valeri, Simona De Cesaris, Christoph Kolb, Rolf Schirmacher","doi":"10.3397/nc_2023_01_1039","DOIUrl":"https://doi.org/10.3397/nc_2023_01_1039","url":null,"abstract":"Ensuring the robustness of vehicle systems and features is a key aspect of customer satisfaction and therefore is of vital importance to Original Equipment Manufacturers (OEMs). Both initial quality and quality over the life of the vehicle are important aspects to customers. Therefore,\u0000 some features and systems require an active approach at monitoring system health. The intent of Active Noise Cancellation (ANC) systems in vehicles is to increase the customer's perception of vehicle refinement and brand quality. Due to the nature of ANC system operation, it is critical that\u0000 the system does not go divergent resulting in unwanted noise being heard by the customer. So, a method to monitor the ANC system operation and performance is required to ensure robustness. Despite tuning ANC systems considering expected vehicle build tolerances, vehicle aging and customer\u0000 specific use cases, an ANC system can occasionally still go divergent in the field. An ANC audit procedure is included in the system software to verify functionality and performance at End of Line (EOL), repair centers or verified though an Over the Air (OTA) procedure. This type of procedure\u0000 can verify the vehicle's acoustic cavity response and update ANC tuning parameters to account for any changes. This paper will show vehicle examples of why an ANC health monitoring system is needed and how we developed, implemented, and utilized an ANC audit procedure to improve ANC system\u0000 robustness and customer satisfaction.","PeriodicalId":19195,"journal":{"name":"Noise & Health","volume":"20 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84531455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Characterizing elastic parameters of isotropic thin plates using impedance tube and transmission loss measurements: a numerical inverse method 用阻抗管和传输损耗测量表征各向同性薄板的弹性参数:一种数值反演方法
IF 0.7 4区 医学
Noise & Health Pub Date : 2023-05-25 DOI: 10.3397/nc_2023_0123
K. Verdière, Simon Campeau, Julien Biboud
{"title":"Characterizing elastic parameters of isotropic thin plates using impedance tube and transmission loss measurements: a numerical inverse method","authors":"K. Verdière, Simon Campeau, Julien Biboud","doi":"10.3397/nc_2023_0123","DOIUrl":"https://doi.org/10.3397/nc_2023_0123","url":null,"abstract":"Thin plates are widely used in various engineering applications, including aerospace, automotive, and construction industries. The mechanical properties of these plates, such as Young's modulus, Poisson's ratio, and structural damping, are essential in determining their acoustic performance.\u0000 While there are various methods for measuring these properties individually or simultaneously, accurately obtaining them can be difficult due to the thin plate's delicate structure and the need for high precision and sensitive equipment. In this paper, we present a numerical inverse method\u0000 for characterizing the elastic parameters of isotropic thin plates using transmission loss measurements obtained from an impedance tube and clamped circular specimen. The proposed method is compared to the Oberst beam technique (ASTM E756-05), and demonstrated through several examples ultimately\u0000 allowing for the prediction of diffused field transmission loss obtained through intensity measurements in a small reverberant room.","PeriodicalId":19195,"journal":{"name":"Noise & Health","volume":"41 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78205397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Considerations in Regulating Anthropogenic Noise in Wilderness Areas, State and National Parks and Forests 管制荒野地区、州立和国家公园及森林的人为噪音的考虑
IF 0.7 4区 医学
Noise & Health Pub Date : 2023-05-25 DOI: 10.3397/nc_2023_0165
T. Casey
{"title":"Considerations in Regulating Anthropogenic Noise in Wilderness Areas, State and National Parks and Forests","authors":"T. Casey","doi":"10.3397/nc_2023_0165","DOIUrl":"https://doi.org/10.3397/nc_2023_0165","url":null,"abstract":"Is anthropogenic noise (i.e. from mining or industrial activities) heard in \"natural settings\" such as wilderness areas, national parks, state or national forests, from activities outside the boundaries of those designated areas, a problem? Congress established a goal of protecting\u0000 the natural wilderness character of wilderness-designated lands in the Wilderness Act of 1964. The National Park Service Director's Order #47 (2000) established operational policies that require, to the fullest extent practicable, the protection, maintenance, or restoration of the natural\u0000 soundscape resource in a condition unimpaired by inappropriate or excessive noise sources. So does that mean that anthropogenic noise from outside the boundaries of these types of designated areas is an impact by virtue of its nature? This paper explores that topic and answers that question\u0000 in an attempt to provide clarity for future evaluations of environmental noise in wilderness areas, state, and national parks, and state and national forests.","PeriodicalId":19195,"journal":{"name":"Noise & Health","volume":"18 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82828608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Light rail wheel/rail noise radiation model using a coupled FE-BE method 基于FE-BE耦合方法的轻轨轮轨噪声辐射模型
IF 0.7 4区 医学
Noise & Health Pub Date : 2023-05-25 DOI: 10.3397/nc_2023_0137
C. Layman, J. Nelson
{"title":"Light rail wheel/rail noise radiation model using a coupled FE-BE method","authors":"C. Layman, J. Nelson","doi":"10.3397/nc_2023_0137","DOIUrl":"https://doi.org/10.3397/nc_2023_0137","url":null,"abstract":"This paper presents the development of a coupled finite element - boundary element model of rolling noise from a resilient light rail wheel on several types of tracks. The vibro-acoustic model utilizes a 3D elastic solid representation for both wheel and rail which are excited by linearized\u0000 Hertzian interface loads. Estimates of the radiated sound power, radiation efficiencies and wayside noise levels are obtained and then scaled using a parallel impedance framework and a roughness profile. Results are compared to recently measured vehicle passby noise and track decay rates at\u0000 Sound Transit in Seattle Washington.","PeriodicalId":19195,"journal":{"name":"Noise & Health","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89512592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A model for near-perfect transmission through lossy media with acoustic sources 有声源的损耗介质近乎完美传输模型
IF 0.7 4区 医学
Noise & Health Pub Date : 2023-05-25 DOI: 10.3397/nc_2023_0071
Nathan Geib, S. Wallen, M. Haberman, Christina J. Naify
{"title":"A model for near-perfect transmission through lossy media with acoustic sources","authors":"Nathan Geib, S. Wallen, M. Haberman, Christina J. Naify","doi":"10.3397/nc_2023_0071","DOIUrl":"https://doi.org/10.3397/nc_2023_0071","url":null,"abstract":"Acoustic metamaterials exhibit effective material properties not found in naturally occurring media, and, as such, have received considerable attention for their potential applications in noise and vibration control, diagnostic imaging, and nonreciprocal transmission. Complementary\u0000 acoustic metamaterials have been proposed as a means of compensating for the high impedance mismatches of aberrating layers that disrupt the acoustic field and hence distort acoustic images. More recently, a complementary acoustic metamaterial featuring active components was shown in principal\u0000 to compensate for both the impedance mismatch and energy attenuation of lossy materials, but a physical realization of the concept has not yet been implemented. Here, we present results from a one-dimensional acoustic model showing how a plane wave incident on a lossy material can be augmented\u0000 by point monopole and dipole sources to allow for near perfect transmission, thus rendering the lossy medium acoustically transparent. We present general expressions for source magnitudes that are dimensionless with respect to frequency, material thickness, and the background medium. We show\u0000 that these results are consistent with three-dimensional finite element simulations, where the appropriate monopolar and dipolar forces are generated using finite dimensional velocity sources with real loudspeaker characteristics mounted in an acoustic waveguide.","PeriodicalId":19195,"journal":{"name":"Noise & Health","volume":"126 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75368778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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