Journal of the Acoustical Society of America最新文献_第10页

A re-examination of duplex perception with musical chordsa). 音乐和弦对双重知觉的重新审视。

IF 2.3 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-08-01 DOI: 10.1121/10.0038976

Brian Roberts

{"title":"A re-examination of duplex perception with musical chordsa).","authors":"Brian Roberts","doi":"10.1121/10.0038976","DOIUrl":"10.1121/10.0038976","url":null,"abstract":"In duplex perception, an acoustic element differing from the others in receiving ear or form (e.g., harmonic complex or sinusoidal) contributes simultaneously to two distinct percepts. Speech has received the most attention, but duplex perception also occurs with musical chords. By one account, a specialist processing \"module\" (e.g., phonetic) has priority access to acoustic information (precedence) that is not subject to scene-analysis constraints. Precedence received initial support from claims of better performance for speech than non-speech judgments of the same stimuli, but experiments controlled for criterion differences and unintended cues challenged this interpretation. This approach is extended here to three-note chords comprising tonic and fifth complexes and a sinusoidal third (30-dB presentation range) defining the mode (major/minor). In experiment 1, listeners first heard a chord and identified its mode; chords were then preceded by two successive sinusoids-one matching the third, the other mistuned-and listeners identified the matching tone. In experiment 2, for tone discrimination, the tonic and fifth were replaced by a single complex crafted to produce equivalent masking of the third but to remove an unintended mode cue. The notion of precedence was not supported; there was no evidence of better performance for musical than non-musical judgments of the same stimuli.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"158 2","pages":"1246-1253"},"PeriodicalIF":2.3,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144873780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimal passive metamaterial selection for electric-Vertical-Take-Off-and-Landing aircraft: A filtering concepta). 电动垂直起降飞机最优无源超材料选择：滤波概念[j]。

IF 2.3 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-08-01 DOI: 10.1121/10.0039054

Mert Dogu, Tao Yang, Yu-Hao Chang, Maaz Farooqui, Marcus Maeder, Steffen Marburg

{"title":"Optimal passive metamaterial selection for electric-Vertical-Take-Off-and-Landing aircraft: A filtering concepta).","authors":"Mert Dogu, Tao Yang, Yu-Hao Chang, Maaz Farooqui, Marcus Maeder, Steffen Marburg","doi":"10.1121/10.0039054","DOIUrl":"https://doi.org/10.1121/10.0039054","url":null,"abstract":"Electric-Vertical-Take-Off-and-Landing (eVTOL) aircraft represent a cutting-edge innovation in modern aviation, potentially transforming future mobility. Among the key propulsion technologies for eVTOLs, ducted fans offer efficiency and compact design. However, controlling the noise from these fans remains a significant challenge due to space and weight constraints. To address this limitation, researchers develop advanced acoustic metamaterial liners to minimize noise emissions, gain public acceptance, and meet certification standards. Nevertheless, looking at the numerous metamaterials already designed, a critical question arises: which metamaterial is the best suited for a specific application, and how can these metamaterials be filtered for a particular case scenario? This article presents an overview of acoustic passive metamaterials and their efficiency in noise reduction. A database has been established to analyze and classify metamaterials from the literature into specific subgroups. For each subgroup, various metamaterials are designed and fabricated, and the acoustic characteristics are assessed using both experimental and numerical investigations. The properties obtained are subsequently incorporated into the filtering matrix. A universally applicable filtering concept is introduced, generating a score distribution for evaluating the applicability of different metamaterials. This is illustrated through the example of ducted fans and the interior cabin in an eVTOL aircraft.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"158 2","pages":"1451-1464"},"PeriodicalIF":2.3,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144958557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Low-frequency hearing and masking parameters in representative seals and sea lionsa). 代表性海豹和海狮的低频听力和掩蔽参数。

IF 2.3 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-08-01 DOI: 10.1121/10.0039049

Jillian M Sills, Brandi Ruscher, Noah Packard, Ryan A Jones, Brandon L Southall, Colleen Reichmuth

{"title":"Low-frequency hearing and masking parameters in representative seals and sea lionsa).","authors":"Jillian M Sills, Brandi Ruscher, Noah Packard, Ryan A Jones, Brandon L Southall, Colleen Reichmuth","doi":"10.1121/10.0039049","DOIUrl":"https://doi.org/10.1121/10.0039049","url":null,"abstract":"Despite the prevalence of low-frequency natural and human-generated noise, there are relatively few biological data describing hearing and masking in non-human mammals at frequencies below 100 Hz. Information about the auditory capabilities of mammals with high sensitivity to low-frequency sounds is needed to understand and quantify masking effects. In this study, behavioral methods were used to investigate low-frequency underwater hearing in two trained bearded seals (Erignathus barbatus) and a California sea lion (Zalophus californianus) in quiet conditions and in the presence of controlled background noise. The measured auditory parameters provide the most comprehensive low-frequency hearing data yet available for any marine mammal. Results demonstrate that seals and sea lions detect sound frequencies at least as low as 40 Hz. The seals were more sensitive-with thresholds up to 24 dB lower between 100 and 40 Hz-and may be particularly vulnerable to noise effects in this range. Critical ratio measurements and critical bandwidth estimates for these subjects, as well as measures of temporal processing capacities, can be used to evaluate low-frequency auditory masking by anthropogenic and natural noise in the marine environment. This study also offers insight into hearing and the effects of noise in other presumed low-frequency specialists, notably whales.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"158 2","pages":"1585-1599"},"PeriodicalIF":2.3,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144958394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A broadband, bistatic model for the spatial coherence of diffuse scattering. 漫射散射空间相干性的宽带双基地模型。

IF 2.3 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-08-01 DOI: 10.1121/10.0039044

Kyle S Dalton, Thomas E Blanford, Daniel C Brown

{"title":"A broadband, bistatic model for the spatial coherence of diffuse scattering.","authors":"Kyle S Dalton, Thomas E Blanford, Daniel C Brown","doi":"10.1121/10.0039044","DOIUrl":"https://doi.org/10.1121/10.0039044","url":null,"abstract":"Spatial coherence describes the similarity of two spatially-separated observations of a signal. It is a property that finds use in many applications but is of particular importance within the field of active sonar. The van Cittert-Zernike theorem (vCZT) is a well-known optical model describing the spatial coherence of a radiated field that has been previously applied to acoustic problems, including coherence-based micronavigation. The limiting assumptions of the vCZT hold for some active sonar applications but are not valid for classes of sonar systems that operate in bistatic geometries with a wide transmit bandwidth. To address this gap in the existing work, this paper describes the development of a spatial coherence model for rough interface scattering in broadband, bistatic applications. The proposed model builds on many of the same foundational principals as the vCZT but removes monostatic assumptions and allows frequency-dependent parameters to be applied across a wide bandwidth. The broadband, bistatic model is experimentally validated with an in-air scattering experiment. Finally, limitations of the model are discussed and potential extensions of this work are presented.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"158 2","pages":"1491-1507"},"PeriodicalIF":2.3,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144958654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A weak scattering attenuation model for Rayleigh waves in three-dimensional polycrystals with arbitrary symmetry. 任意对称三维多晶体中瑞利波的弱散射衰减模型。

IF 2.3 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-08-01 DOI: 10.1121/10.0038757

Shan Li, Yongfeng Song

{"title":"A weak scattering attenuation model for Rayleigh waves in three-dimensional polycrystals with arbitrary symmetry.","authors":"Shan Li, Yongfeng Song","doi":"10.1121/10.0038757","DOIUrl":"https://doi.org/10.1121/10.0038757","url":null,"abstract":"This paper presents a theoretical model for the scattering attenuation of Rayleigh waves propagating along the stress-free planar surface of a three-dimensional (3D) semi-infinite polycrystalline medium with single-phase, untextured, equiaxed grains and arbitrary symmetry. The model can explain the behavior of the Rayleigh wave scattering into Rayleigh and bulk waves, i.e., it can provide a detailed calculation of Rayleigh-to-Rayleigh (R-R), Rayleigh-to-Shear (R-S), and Rayleigh-to-Longitudinal (R-L) attenuation separately. Numerical results reveal that the attenuation of R-R, R-S, and R-L exhibits the same frequency and grain size dependence as observed in the scattering of bulk waves in the Rayleigh regime. The R-L attenuation is negligible compared to the other two types of attenuation. Meanwhile, for a given material, the relative contributions from R-R and R-S attenuation to total scattering attenuation of Rayleigh waves remain unchanged, regardless of changes in frequency or grain size. Crystalline symmetry affects the relative contributions of the three types of wave mode conversions to the total scattering attenuation. Moreover, it plays a more critical role in determining scattering attenuation than the anisotropy index. Quantitative agreement is observed between the theoretical model and the existing attenuation model proposed by Ryzy et al. [AIP Adv. 8, 125019 (2010)] with only a relative error of 3.9% and 5.4% for aluminum (cubic symmetry) and copper sulfate pentahydrate (triclinic symmetry), respectively, within the applicable range of the theoretical model. However, the theoretical model is limited in applicability within stochastic and geometric regimes due to the constraints of the zero-order Born approximation. The proposed method and the obtained findings contribute to the understanding of Rayleigh wave propagation along the 3D polycrystalline surface and provide a basis for advancing the second-order Born approximation toward application in the stochastic regime.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"158 2","pages":"1573-1584"},"PeriodicalIF":2.3,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144958642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Observation and modeling of out-of-plane arrivals on near-bottom recorders at the Atlantis II Seamount Complex. 亚特兰提斯2号海底山综合设施近底记录仪对飞机外到达的观测和模拟。

IF 2.3 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-08-01 DOI: 10.1121/10.0039041

Thomas Jerome, Megan Ballard, Julien Bonnel, Jason Sagers

{"title":"Observation and modeling of out-of-plane arrivals on near-bottom recorders at the Atlantis II Seamount Complex.","authors":"Thomas Jerome, Megan Ballard, Julien Bonnel, Jason Sagers","doi":"10.1121/10.0039041","DOIUrl":"https://doi.org/10.1121/10.0039041","url":null,"abstract":"This paper reports on measurements of out-of-plane arrivals from an airgun transect over the north slope of the Atlantis II Seamount Complex in the North Atlantic. The data were collected by a set of three near-bottom single-channel acoustic recorders. Time delay analysis is applied to assess the directionality of anomalous arrivals in the received time series that are interwoven between the in-plane bottom-surface and multiple bottom-surface reflected paths. Back propagation using estimated arrival angles in a three-dimensional ray-tracing model facilitates identification of bathymetric features associated with the arrivals. The responsible features were most commonly identified as local maxima that appear as steep-sided spires rising several hundred meters above the seafloor on the slope and near the base of Atlantis II. Arrival times for the predicted propagation paths are recreated by combining two-dimensional ray traces from the source to the bathymetric feature and from the bathymetric feature to the receiver to obtain modeled arrival times for comparison with observations. Multiple examples are analyzed, providing insight into likely contributors to the complex propagation in seamount environments. Forward modeling of the identified propagation paths using three-dimensional ray traces highlights challenges for ray-based acoustic modeling of propagation in the presence of highly variable bathymetry.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"158 2","pages":"1377-1385"},"PeriodicalIF":2.3,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144958577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of the risk of noise-induced hearing loss and the significance of occupational noise exposure limit among Chinese industrial workers. 中国工业工人噪声性听力损失风险评价及职业性噪声暴露限值的意义

IF 2.3 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-08-01 DOI: 10.1121/10.0038801

Hengjiang Liu, Meibian Zhang, Xin Sun, Weijiang Hu, Shixing Bai, Hua Zou, Dandan Zhang, Beibei Lu, Yu Tian, Jingsong Li, Wei Qiu

{"title":"Evaluation of the risk of noise-induced hearing loss and the significance of occupational noise exposure limit among Chinese industrial workers.","authors":"Hengjiang Liu, Meibian Zhang, Xin Sun, Weijiang Hu, Shixing Bai, Hua Zou, Dandan Zhang, Beibei Lu, Yu Tian, Jingsong Li, Wei Qiu","doi":"10.1121/10.0038801","DOIUrl":"https://doi.org/10.1121/10.0038801","url":null,"abstract":"This study evaluated the excess risk of noise-induced hearing loss (NIHL) and its association with noise kurtosis (β) among 3421 Chinese male industrial workers exposed to complex noise. The objectives were to: (1) quantify the excess risk of NIHL, (2) examine how kurtosis influences this risk, and (3) recommend occupational exposure limits (OELs) for complex noise. Hearing loss was defined using two metrics: pure-tone averages (PTAs) PTA1234-AI (articulation-index-weighted average at 1-4 kHz) and PTA346 (unweighted average at 3-6 kHz). Logistic regression modeled hearing loss probability based on age, exposure level, and exposure duration. To assess kurtosis-related effects, workers were stratified into three kurtosis-based subgroups. Results showed that complex noise exposures yielded significantly higher excess risk than steady-state noise, and excess risk increased with higher kurtosis. Early noise exposure primarily elevated PTA346-defined hearing loss, with PTA1234-AI-defined hearing loss becoming more prominent as cumulative exposure increased. Derivative analysis of excess risk curves suggests lowering the standard OEL of 85 dBA to 80 dBA for PTA1234-AI and 77 dBA for PTA346. For high-kurtosis exposures (β ≥ 70 for PTA1234-AI; β ≥ 25 for PTA346), an additional 2 dBA reduction is recommended. These findings support more protective OELs for industrial workers exposed to non-steady-state, high-kurtosis noise environments.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"158 2","pages":"1355-1366"},"PeriodicalIF":2.3,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144958618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A coherence-based robust frequency-dependent variable step size method for active road noise control. 一种基于相干鲁棒变步长频率的道路噪声主动控制方法。

IF 2.3 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-08-01 DOI: 10.1121/10.0038751

Siyuan Lian, Jincheng Gu, Shuping Wang, Kai Chen, Yuxiang Hu, Changbao Zhu, Jing Lu

{"title":"A coherence-based robust frequency-dependent variable step size method for active road noise control.","authors":"Siyuan Lian, Jincheng Gu, Shuping Wang, Kai Chen, Yuxiang Hu, Changbao Zhu, Jing Lu","doi":"10.1121/10.0038751","DOIUrl":"https://doi.org/10.1121/10.0038751","url":null,"abstract":"Active road noise control (ARNC) is an effective method for mitigating low-frequency noise in vehicle cabins. Previous work introduced a decoupling-whitening frequency domain filtered-error least mean square (DWFDFeLMS) algorithm, which exhibits rapid convergence characteristics for steady-state environments. However, uncorrelated disturbances significantly impact the convergence performance and stability of adaptive algorithms in practical applications. In this paper, a coherence-based robust frequency-dependent variable step size method is proposed to dynamically adjust the step size, using the multichannel coherence coefficients between reference signals and error signals for system stability. Additionally, it is combined with the DWFDFeLMS algorithm for fast convergence speed in ARNC systems. The proposed algorithm ensures fast initial convergence, small steady-state error, and resilience to in-cabin interference. The superiority of this algorithm in terms of convergence speed and stability is confirmed through simulations with measured road noise data and in a real-time ANC system in a car cabin.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"158 2","pages":"1254-1267"},"PeriodicalIF":2.3,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144958613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Detection and localization of Bryde's whale calls using machine learning and probabilistic back-projection. 利用机器学习和概率反向投影对布氏鲸叫声进行检测和定位。

IF 2.3 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-08-01 DOI: 10.1121/10.0039043

Jean Baptiste Tary, Sergio F Poveda, Ka Lok Li, Christine Peirce, Richard W Hobbs, Carlos Alberto Vargas

{"title":"Detection and localization of Bryde's whale calls using machine learning and probabilistic back-projection.","authors":"Jean Baptiste Tary, Sergio F Poveda, Ka Lok Li, Christine Peirce, Richard W Hobbs, Carlos Alberto Vargas","doi":"10.1121/10.0039043","DOIUrl":"https://doi.org/10.1121/10.0039043","url":null,"abstract":"Passive acoustic monitoring can inform our understanding of baleen whale behavior by recording and analyzing their vocalizations. Two crucial factors in the analysis of whale calls are their detection and localization. In this study, we first develop a machine learning method to detect Bryde's whale calls observed by ocean-bottom instruments deployed in the Panama basin, and back-project the detected events to determine their localizations. Using previously identified Bryde's whale calls, we apply data augmentation strategies to increase the size of our training dataset to ultimately obtain 890 214 training examples. Using an evaluation dataset, we determine which detection thresholds optimize false positives and negatives and apply these to continuously recorded hydrophone data. The detection resulted in 4514 potential events, of which 899 were recorded by at least three instruments. The waveforms of these events were automatically extracted, cross correlation probability envelopes were computed between hydrophones, and these were finally back-projected onto a 3D grid to obtain final event localizations. For this network, this procedure is shown to be robust to high noise levels, random time errors, and systematic bias introduced by the velocity model. This approach has further advantages, such as being computationally efficient and requiring minimal manual intervention.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"158 2","pages":"1386-1397"},"PeriodicalIF":2.3,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144958620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Determination of longitudinal wave and shear wave acoustic reflectivity of Bragg reflector in the GHz range. Bragg反射器在GHz范围纵波和横波声反射率的测定。

IF 2.3 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-08-01 DOI: 10.1121/10.0037227

Motoshi Suzuki, Yohkoh Shimano, Takahiko Yanagitani

{"title":"Determination of longitudinal wave and shear wave acoustic reflectivity of Bragg reflector in the GHz range.","authors":"Motoshi Suzuki, Yohkoh Shimano, Takahiko Yanagitani","doi":"10.1121/10.0037227","DOIUrl":"https://doi.org/10.1121/10.0037227","url":null,"abstract":"Solidly mounted resonator (SMR) consists of a piezoelectric layer and a Bragg reflector. However, isolating and extracting the acoustic (mechanical) properties of the Bragg reflector alone has proven challenging. We propose a method for evaluating the acoustic properties of the Bragg reflector using the pulse-echo technique with an SiO2 delay line. Moreover, evaluation of shear acoustic properties of the reflector is crucial, as the Q-value of SMR improves when the transmission leakage of both longitudinal and shear waves is suppressed within the same frequency range. In this study, the transmission loss of longitudinal and shear waves was measured for three types of Bragg reflectors, i.e., longitudinal wave Bragg reflector, shear wave Bragg reflector, and a Bragg reflector, which reflects both longitudinal and shear waves in the same frequency range. The experimental transmittance of the isolated reflector part demonstrated a strong correlation with the theoretical values calculated using the mechanical circuit model. In addition, with the increasing demand for high-frequency filters, we evaluated the longitudinal wave transmission loss of Bragg reflectors for 5 and 6 GHz SMRs. The method successfully detected transmission loss at -30 dB for 4 GHz, and the experimental and theoretical properties accords well in the 7-9 GHz range, demonstrating that the present method can evaluate acoustic properties of Bragg reflectors in the higher-frequency range as well.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"158 2","pages":"985-995"},"PeriodicalIF":2.3,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144789434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0