On the Regular Integral Solutions of a Generalized Bessel Differential Equation by L. M. B. C. Campos, F. Moleiro, M. J. S. Silva, J. Paquim

“…The original Bessel differential equation that describes, among many others, cylindrical acoustic or vortical waves, is a particular case of zero degree of the generalized Bessel differential equation that describes coupled acoustic-vortical waves. …”
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An Overview of Recent Advances in the Iterative Analysis of Coupled Models for Wave Propagation by D. Soares, L. Godinho

“…Many works have been published on this subject, addressing the case of electromagnetic, acoustic, or elastic waves and making use of different strategies to perform this coupling. …”
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Development of an Equivalent Force Method and an Application in Simulating the Radiated Noise from an Operating Diesel Engine by Nickolas Vlahopoulos, Yury Kalish, S.T. Raveendra

“…The computed vibration constitutes the excitation for an acoustic boundary element analysis. The new developments presented in this paper are associated with: the equivalent force method that can prescribe the acceleration at certain parts of the structure; the integration within a single process of test data that define the excitation, with the vibration analysis, and the acoustic prediction; the utilization of the new technology in simulating the noise radiated from a running engine and determining the effects of design changes. …”
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Discours direct : syntaxe et prosodie by Sylvie HANOTE

“…To do so, the paper closely investigates the different acoustic behaviours of reporting speech clauses depending on their position in the utterance (initial, medial or final), on the internal word order (SV or VS) and on the type of syntactic subject of the reporting verb.…”
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Study on On-line Detection Method of Heavy Duty Truck Gearbox Assembly Quality based on Wavelet Analysis by Zheng Zou, Rupeng Cao, Qing Qu, Zhezhan Tang, Kangqu Zhou, Wei Chen

“…In order to determine the assembly quality of a certain type of gearbox， the common assembly faults of gearbox are briefly introduced based on the internal structure of gearbox， the characteristics frequencies of common faults of each gear and bearing in each gear position of gearbox are theoretically analyzed， an acoustic signal acquisition experimental platform is built and used to collect the acoustic signals of targeted gearbox in different gears. …”
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PLASMON MODES IN A MULTILAYER STRUCTURE WITH 3-BILAYER GRAPHENE SHEETS by Nguyen Van Men, Dong Thi Kim Phuong, Vu Dong Duong

“…Numerical calculations show that one optical and two acoustic branches exist in the system. The optical branch becomes overdamped quickly while the two acoustic branches continue and disappear at single-particle excitation boundaries. …”
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Keyword spotting system for broadcast news by ZHANG Peng-yuan, SHAO Jian, ZHAO Qing-wei, YAN Yong-hong

“…A two-step keyword spotting strategy was presented.This strategy allowed to change keyword list conven-iently.Different from the previous systems,search space was generated based on all Chinese syllables,not specifically for keywords.Phoneme recognition was performed without any lexical constraints.With 1-best phoneme sequence and keyword list,which generated keyword hypotheses.At last,two confidence measures were introduced adopted in the sys-tem: one based on acoustic model and the other based on phoneme lattice.For a decoded speech frame aligned to an HMM state,the acoustic confidence was calculated.The lattice confidence made use of phoneme lattices generated by a phoneme recognizer.These two confidence measures were combined using a weighting factor to obtain a hybrid confi-dence as they had different dynamic scales.Experiments show that the proposed algorithms significantly improve the system performance on the broadcast news task.…”
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Research on shear-slip characteristics with different-size rectangular zigzag gouge by double-direct tests by Yang Liu, Cai-Ping Lu, Tong-bin Zhao

“…Simultaneously, the shear force and corresponding acoustic emissions were recorded during shear-slip of rectangular zigzag gouge, and the variations of shear force and acoustic emission energy characteristics related to shear-slip events were analyzed. …”
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Modelling of ultrasonic impact treatment (UIT) of welded joints and its effect on fatigue strength by K.L. Yuan, Y.Sumi

“…In the FE model, the actual treatment conditions and local mechanical characteristics due to acoustic softening are set as input parameters. The plastic deformation and compressive stress layer are found to be more pronounced when acoustic softening takes place. …”
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Vocal recognition of partners by female prairie voles by Megan R. Warren, Jenny Zha, Larry J. Young, Robert C. Liu

“…Vocalizations of individual males change after bonding with a female; however, acoustic variation across individuals is greater than within-individual variation. …”
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The Effect of Duolingo on l2 Learners’ Pronunciation: Vowel Analysis through Minimal Pairs by Giedrė Balčytytė, Viktorija Skerstonaitė

“… The present paper focuses on the acoustic analysis of Russian speakers’ English vowel production before and after using the Duolingo application. …”
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Experimental Study on the Property Degradation and Failure Mechanism of Weakly Cemented Sandstone under Dry-Wet Cycles by Zhaoyang Song, Lihui Sun, Shouye Cheng, Zhiqiang Liu, Jie Tan, Fangbo Ning

“…Taking the weakly cemented sandstone of Ordos, China, as the research object, the evolution law between the relative stress of weakly cemented sandstone and the multiparameters of the acoustic emission under different dry-wet cycles was explored, and the critical failure identification mode of weakly cemented sandstone under dry-wet cycle was established. …”
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Sustainable ceiling panels: exploring the potentials of groundnut shell and sugarcane bagasse-modified plaster of Paris by Ubong Williams Robert, Sunday Edet Etuk, Okechukwu Ebuka Agbasi, David Adeniran Oyegoke, Sylvester Andrew Ekong

“…The samples were dried, and then characterized/appraised for acoustical insulation, heat transfer, and strength. …”
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Pengukuran Sumbatan Hidung pada Deviasi Septum Nasi by Bestari J Budiman, Ade Asyari

“…Keywords: Nasal obstruction, septal deviation, nasal inspiratory flow meter, nasal expiratory flow metry, rhinomanometry, acoustic rhinometry…”
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Source localization based on time delay estimation in complex environment by Da-wei ZHANG, Chang-chun BAO, Bing-yin XIA

“…In order to improve the performance of source localization in noisy and reverberant environments,a novel time delay estimation (TDE) method was proposed.This method is called acoustical transfer function ratio based on statistical model (ATFR-SM).In the proposed algorithm,the noise reduction method based on the statistical model was adopted to reduce the effect of noise on acoustical transfer Function (ATF).In the ATF method,the power spectral density (PSD) was smoothed and whitened to reduce the effect of reverberations.voice activity detection (VAD) was used to distinguish the speech period from the noise period,and the TDE was performed in the speech period to improve the estimation accuracy.Moreover,the proposed TDE method and the linear closed-form method for source localization were combined to constitute a source localization system.The results of performance evaluation show that,in both the noisy and reverberant conditions,the lower percentage of abnormal points (PAP) and lower root mean square error (RMSE) can be achieved by the proposed TDE method than those of the reference methods.Meanwhile,the source localization has higher accuracy than the reference methods.…”
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A Preliminary Report on Disordered Speech with Deep Brain Stimulation in Individuals with Parkinson's Disease by Christopher Dromey, Suzy Bjarnason

“…The aim of this study was to learn which laryngeal and articulatory acoustic features changed in patients who were reported to have worse speech with stimulation. …”
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Nonlinear Numerical Simulation for Oscillating Pressure in Cavity and Passive Control Research by Binqi Chen, Yiding Wang

“…Prediction of oscillating pressure is a key technology for cavity research. Nonlinear Acoustic Solver (NLAS) is applied to analyze aeroacoustics recently. …”
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Damage and restoration of historical urban walls: literature review and case of studies by Mauro Sassu, Aida Safabakhsh

“…Various non-destructive methods were employed to measure moisture and monitor the materials involved, including Infrared Thermography, Electrical Resistivity Tomography, Ground Penetrating Radar, Laser Scanning and Digital Terrestrial Photogrammetry, Global Navigation Satellite Systems, Unilateral Nuclear Magnetic Resonance, Laser-Induced Fluorescence technique, Acoustic Imaging and Acoustic Tomography, Geographic Information System, on-site survey process and computer modeling of the structure with specific FEM software. …”
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Machine learning algorithms can predict emotional valence across ungulate vocalizations by Romain A. Lefèvre, Ciara C.R. Sypherd, Élodie F. Briefer

“…With an accuracy of 89.49% (balanced accuracy: 83.90%), we found that the most important predictors of emotional valence were acoustic variables reflecting changes in duration, energy quartiles, fundamental frequency, and amplitude modulation. …”
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Analysis of Vibroacoustic Modulations for Crack Detection: A Time-Frequency Approach Based on Zhao-Atlas-Marks Distribution by A. Trochidis, L. Hadjileontiadis, K. Zacharias

“…The vibro-acoustic modulation (VAM) technique is probably the most widely used nonlinear method for crack detection. …”
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