Journal of the Acoustical Society of America最新文献

On the indirect measurement of airflow resistivity of thin specimens in mid-frequencies via measured transfer matrix (T12). 通过测量传递矩阵（T12）间接测量薄试件中频气流电阻率。

IF 2.3 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-10-01 DOI: 10.1121/10.0039103

S Pandey, D P Jena

{"title":"On the indirect measurement of airflow resistivity of thin specimens in mid-frequencies via measured transfer matrix (T12).","authors":"S Pandey, D P Jena","doi":"10.1121/10.0039103","DOIUrl":"https://doi.org/10.1121/10.0039103","url":null,"abstract":"Recent experiments demonstrated that airflow resistivity (AFR) of fibrous porous materials can be calculated indirectly via impedance and transmission loss tubes in the mid-frequency region [Pandey and Jena (2025). Meas. Sci. Technol. 36, 035901]. In the present work, a method for estimating AFR is devised using the second element, T12, of the four-pole parameters or the transfer matrix (T), of the given porous material, as measured via a transmission loss tube. The theoretical background is discussed first, followed by the finite element simulation [conducted according to ASTM (2019a) E2611-19 standard] on fourteen materials, sourced from literature, with AFR ranging from ∼ 2 to 99 kPa·s/m2. It is observed that these results depend significantly on the sample thickness, and by keeping the thickness in the range of 10-15 mm, the AFR can be estimated in a broadband mid-frequency region with errors of ≤ 2.6%. At last, experiments are conducted on five materials, three (fibrous materials, high AFR) having samples of three different thicknesses and the other two (low AFR) having thicknesses of 10 mm and 15 mm. The results are presented to authenticate the observations made from simulations, followed by the uncertainty analyses to determine the reliability.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"158 4","pages":"2664-2675"},"PeriodicalIF":2.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145206595","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

Numerical investigation of the noise generation of electric motors in urban air mobility vehiclesa). 城市空中机动车辆电动机噪声产生的数值研究[j]。

IF 2.3 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-10-01 DOI: 10.1121/10.0039427

Sebastian Hakansson, Philipp Schulze, Ralf Burgmayer, Erik W Schneehagen, Thomas F Geyer

{"title":"Numerical investigation of the noise generation of electric motors in urban air mobility vehiclesa).","authors":"Sebastian Hakansson, Philipp Schulze, Ralf Burgmayer, Erik W Schneehagen, Thomas F Geyer","doi":"10.1121/10.0039427","DOIUrl":"https://doi.org/10.1121/10.0039427","url":null,"abstract":"Current concepts of urban air mobility vehicles usually rely on a set of individual electrically driven propulsion systems. Although aerodynamically generated noise from the rotors or fans remains the main contribution to the overall noise, noise generated by electric machines may well add to the total noise. This is especially true for fast-spinning electric motors that cause high-frequency noise contributions, which may notably increase the total noise and lead to unwanted psychoacoustic effects. In the current paper, the noise generation of two versions of permanent magnet synchronous machines in a conventional inrunner configuration, intended for use in a concept vehicle propelled by eight tiltable rotors, is investigated through numerical simulations and analytical models. One version is a direct drive, designed to deliver the torque and rotational speed required for the rotor directly. The other is a geared version, delivering a higher rotational speed and lower torque, thus requiring an additional gear box to drive the rotor. The results show that the geared motor version leads to notable noise contributions at frequencies of 2 kHz and 9 kHz. Coupled with a high radiation efficiency in this frequency range, the findings imply that noise from electric machines contributes to the total noise from the vehicle.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"158 4","pages":"2647-2658"},"PeriodicalIF":2.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145199939","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 consistency measure for psychometric measurements. 用于心理测量的一致性测量。

IF 2.3 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-10-01 DOI: 10.1121/10.0039426

Maximilian Karl Scharf, Anna Warzybok, Sabine Hochmuth, Birger Kollmeier

{"title":"A consistency measure for psychometric measurements.","authors":"Maximilian Karl Scharf, Anna Warzybok, Sabine Hochmuth, Birger Kollmeier","doi":"10.1121/10.0039426","DOIUrl":"https://doi.org/10.1121/10.0039426","url":null,"abstract":"Adaptive tracking procedures in psychophysics may produce erroneous, \"untypical\" results and non-converging tracks due to, e.g., inattention of the test subject or external disturbances. This paper presents a multi-state psychometric model, which is used to rate the outcome of psychometric measurement procedures with a consistency measure. The consistency measure may be used for a post hoc, automated consistency estimation for any psychometric measurement procedure that can be modeled with a sigmoid psychometric function. The model calculates the log likelihood difference between single and two interleaved psychometric functions, potentially underlying a recorded adaptive track. A binary classifier was tested with a range of candidates for consistency measures with simulated, inconsistent tracks, and expert ratings of empirical tracks. The proposed consistency measure was identified as the best candidate to classify inconsistent tracks, while expert ratings were best predicted with the spectrum of the stimulus level, which is shown to be a suboptimal predictor of consistency. A threshold of the proposed measure for the German matrix sentence test is 10 to test for inconsistency, with a sensitivity of 60% and a specificity of 80%.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"158 4","pages":"2676-2686"},"PeriodicalIF":2.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145212882","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

Non-dispersive graded impedance acoustic lenses. 非色散梯度阻抗声学透镜。

IF 2.3 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-09-01 DOI: 10.1121/10.0039107

Sebastiano Cominelli

引用次数: 0

Perception of frequency-dependent processing delays motivated by hearing devices. 由听力设备引起的频率依赖性处理延迟的感知。

IF 2.3 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-09-01 DOI: 10.1121/10.0039059

Kristin Ohlmann, Thomas Biberger, Birger Kollmeier

{"title":"Perception of frequency-dependent processing delays motivated by hearing devices.","authors":"Kristin Ohlmann, Thomas Biberger, Birger Kollmeier","doi":"10.1121/10.0039059","DOIUrl":"https://doi.org/10.1121/10.0039059","url":null,"abstract":"Processing delays can negatively affect listening experience, especially in cases where the (processed) delayed sound interferes with an un-delayed (or direct) sound component, as it is the case for (open-fit) hearing devices. In this study, psychometric functions for delay perception in individual frequency bands were measured. Also, it was assessed how noticeability adds up across frequency bands for frequency-dependent processing delays. Noticeability of delays depends largely on the phase shift they introduce in each frequency band. Psychometric functions are non-monotonous, with maximum noticeability at phase shifts (2n+1)π. When using the sensitivity index d' to describe the noticeability of a delay, the overall noticeability dtotal' of a frequency-dependent delay was found to be the RMS of the noticeabilities dn' in each frequency band n. Additionally, different auditory models were tested regarding their capability to predict the experimental results. The audio quality model GPSMq [Biberger et al. (2018). J. Audio Eng. Soc. 66(7), 578-593] showed the best performance for the majority of conditions, yielding predictions that are highly correlated (ρ>0.85) with the participants' results. Model performance could confirm that delays are mainly perceived based on spectral effects.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"158 3","pages":"1867-1878"},"PeriodicalIF":2.3,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145015666","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

Characterization and modeling source levels of commercial vessels in the Gulf of Mexico. 表征和模拟墨西哥湾商业船只的源水平。

IF 2.3 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-09-01 DOI: 10.1121/10.0039379

Katrina H Johnson, Vanessa M ZoBell, Lynne E W Hodge, Melissa S Soldevilla, John A Hildebrand, Kaitlin E Frasier

{"title":"Characterization and modeling source levels of commercial vessels in the Gulf of Mexico.","authors":"Katrina H Johnson, Vanessa M ZoBell, Lynne E W Hodge, Melissa S Soldevilla, John A Hildebrand, Kaitlin E Frasier","doi":"10.1121/10.0039379","DOIUrl":"https://doi.org/10.1121/10.0039379","url":null,"abstract":"The Gulf of Mexico is among the noisiest marine regions globally, primarily due to widespread seismic airgun operations and vessel traffic. While airguns dominate the low-frequency soundscape, vessel traffic also contributes substantial high-amplitude noise in the same range low-frequency band (<500 Hz). Between August 2020 and July 2022, two underwater acoustic recording stations documented 13 930 vessel transits from five major ship types operating within commercial shipping lanes. Tankers and cargo ships were the most common, followed by tug-tows, passenger ships, and special crafts. Cargo ships and tankers had average broadband (20-1000 Hz) monopole source levels (MSLs) of ∼183 dB re 1 μPa m, while tug-tows were 2-3 dB lower, and passenger ships/special craft were 4-5 dB lower. To investigate factors influencing low-frequency sound production, this study analyzed the relationship between vessel MSLs and ship characteristics, transit conditions, and oceanographic parameters. For this study, machine-learning models were trained to predict MSLs and their performance was compared to that of generalized additive models. Vessel speed was the most influential predictor, with additional contributions from deadweight, gross tonnage, length, and environmental parameters. This machine learning approach provides a tool to estimate MSLs in other regions and simulate the effects of noise reduction solutions, such as speed reduction or vessel design modifications.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"158 3","pages":"2250-2268"},"PeriodicalIF":2.3,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145113625","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

Modal response coupling mechanism in multi-element coupled transducers. 多单元耦合换能器的模态响应耦合机理。

IF 2.3 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-09-01 DOI: 10.1121/10.0039346

Hao Sun, Yu Lan, Wei Lu, Tianfang Zhou

{"title":"Modal response coupling mechanism in multi-element coupled transducers.","authors":"Hao Sun, Yu Lan, Wei Lu, Tianfang Zhou","doi":"10.1121/10.0039346","DOIUrl":"https://doi.org/10.1121/10.0039346","url":null,"abstract":"Multi-element coupled transducers (MCTs) effectively reduce their operating frequency through acoustic interactions among closely spaced elements. However, their narrow bandwidth significantly limits practical applications. This study investigates an MCT comprising three axially aligned bender transducers with identical characteristics. A theoretical underwater acoustic radiation model was developed to analyze far-field pressure distributions. Modal superposition theory was employed to examine the coupling mechanisms among multiple vibration modes. By optimizing the amplitude and phase relationships of the excitations applied to individual elements, positive modal coupling was achieved, significantly broadening the operational bandwidth of the MCT. A prototype consisting of three bender transducers was fabricated, and its transmitting voltage response (TVR) was experimentally evaluated. The results demonstrated a maximum TVR of 131.2 dB within the frequency range of 460-1002 Hz, with an in-band fluctuation of 12.4 dB. Compared to conventional uniform-amplitude and in-phase excitation methods, the fluctuation amplitude was reduced by approximately 12.3 dB. This work provides theoretical insights and practical guidance for designing low-frequency broadband underwater acoustic transducers.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"158 3","pages":"2305-2318"},"PeriodicalIF":2.3,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145124990","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 modified least mean square Newton algorithm based on block coordinate descent for multi-reference active noise control. 基于块坐标下降的改进最小均方牛顿算法用于多参考源噪声控制。

IF 2.3 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-09-01 DOI: 10.1121/10.0039390

Yiming He, Wangxiaoxu Chen, Kai Chen, Jiancheng Tao, Xiaojun Qiu

{"title":"A modified least mean square Newton algorithm based on block coordinate descent for multi-reference active noise control.","authors":"Yiming He, Wangxiaoxu Chen, Kai Chen, Jiancheng Tao, Xiaojun Qiu","doi":"10.1121/10.0039390","DOIUrl":"https://doi.org/10.1121/10.0039390","url":null,"abstract":"In some feedforward active noise control systems, more references are required to increase the noise reduction performance; however, the convergence speed of adaptive algorithms usually decreases, and the computational complexity increases when the number of reference channels increases. In this paper, a modified least mean square Newton (LMS-Newton) algorithm based on block coordinate descent is proposed. By dividing the control filter into channel-wise blocks and updating each block sequentially, the proposed algorithm reduces computational complexity while retaining the convergence performance of conventional LMS-Newton algorithms. Theoretical analysis demonstrates that the proposed algorithm can converge to the Wiener solution under a reliable estimation of the correlation function. The simulation results using the measured road noise data with 42 reference signals show that the proposed algorithm reduces the convergence time of the filtered-x normalized least mean square (FxNLMS) algorithm and achieves 11.1 dBA and 9.9 dBA noise reduction at the left and right ears within 40 s. The proposed algorithm achieves a 74% reduction in computational complexity compared to the FxNLMS algorithm and a 98% reduction compared to the LMS-Newton algorithm.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"158 3","pages":"2377-2388"},"PeriodicalIF":2.3,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145125038","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

Breakdown of classical models in highly damped ultrasonic propagation. 高阻尼超声传播经典模型的击穿。

IF 2.3 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-09-01 DOI: 10.1121/10.0039247

D Lafarge, A Bouchendouka, Z E A Fellah, T Scotti, E Ogam, C Perrot, C Depollier, M Ratassepp, N Chrysochoidis

{"title":"Breakdown of classical models in highly damped ultrasonic propagation.","authors":"D Lafarge, A Bouchendouka, Z E A Fellah, T Scotti, E Ogam, C Perrot, C Depollier, M Ratassepp, N Chrysochoidis","doi":"10.1121/10.0039247","DOIUrl":"https://doi.org/10.1121/10.0039247","url":null,"abstract":"The acoustic behavior of ordinary porous foams with moderate flow resistivities (σ∼103-104 Pa · s · m-2), commonly used in noise control applications and featuring relatively simple microstructures, is well understood within the framework of the Johnson-Allard-Champoux models. For cases requiring greater precision, these models can be refined further using the extensions proposed by Lafarge and Pride. In this work, using free-field ultrasonic (∼100 kHz) and guided low-frequency (∼100 Hz) time-domain measurements, we demonstrate a possible significant inadequacy of these models when applied to foams engineered to exhibit anomalously small viscous and thermal characteristic lengths and marked by exceptionally strong intrinsic absorption. This does not necessarily call into question the underlying local equivalent-fluid theory, although scattering effects may emerge. However, scattering effects may emerge when applied to foams engineered to exhibit anomalously small viscous and thermal characteristic lengths and marked by exceptionally strong intrinsic absorption. Our findings open avenues for extending existing models to more accurately capture and experimentally probe complex pore geometries, potentially enabling the assessment of scattering effects not included in the equivalent-fluid description, and for designing more effective, broadband sound-absorbing structures that achieve strong net absorption through controlled reflection, particularly at low frequencies.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"158 3","pages":"2389-2403"},"PeriodicalIF":2.3,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145131129","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

The effect of broadband noise, mood, and language background on decision-making performance. 宽带噪声、情绪和语言背景对决策绩效的影响。

IF 2.3 2区物理与天体物理

Journal of the Acoustical Society of America Pub Date : 2025-09-01 DOI: 10.1121/10.0039242

Natalie Rose Jabuka, Brett Robert Charles Molesworth, Marion Burgess

{"title":"The effect of broadband noise, mood, and language background on decision-making performance.","authors":"Natalie Rose Jabuka, Brett Robert Charles Molesworth, Marion Burgess","doi":"10.1121/10.0039242","DOIUrl":"10.1121/10.0039242","url":null,"abstract":"Affective states (i.e., mood) and stressors such as noise have been shown to influence memory and performance. This effect varies depending on the affective state (i.e., negative vs positive), the stressor and other factors such as the native language background of the individual. What remains unknown is the interaction between the two states, mood and noise, on decision-making performance. This study investigates how the negative affective state of tense and the stressor of broadband (white) noise at 75 dB(A) impacts an individual's decision-making performance. This effect was investigated for both native and non-native English speakers. The results revealed the stressor of broadband noise at 75 dB(A) positively influenced decision-making performance in a calm affective state. The results also revealed in the absence of the stressor noise [i.e., ambient noise at 38 dB(A)], a tense affective state also positively influenced decision-making performance. No effect was found based on language background. These findings highlight the benefits of certain stressors and affective states in optimising decision-making performance, an important area for safety-critical industries such as aviation, rail, and healthcare.","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"158 3","pages":"2093-2099"},"PeriodicalIF":2.3,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145064966","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