Journal of the Acoustical Society of America

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Some effects of talker variability on spoken word recognition
Journal of the Acoustical Society of America - Tập 85 Số 1 - Trang 365-378 - 1989
John W. Mullennix, David B. Pisoni, Christopher S. Martin
The perceptual consequences of trial-to-trial changes in the voice of the talker on spoken word recognition were examined. The results from a series of experiments using perceptual identification and naming tasks demonstrated that perceptual performance decreases when the voice of the talker changes from trial to trial compared to performance when the voice on each trial remains the same. ...... hiện toàn bộ
The role of spectral and periodicity cues in auditory stream segregation, measured using a temporal discrimination task
Journal of the Acoustical Society of America - Tập 106 Số 2 - Trang 938-945 - 1999
Joyce Vliegen, Brian C. J. Moore, Andrew J. Oxenham
In a previous paper, it was shown that sequential stream segregation could be based on both spectral information and periodicity information, if listeners were encouraged to hear segregation [Vliegen and Oxenham, J. Acoust. Soc. Am. 105, 339–346 (1999)]. The present paper investigates whether segregation based on periodicity information alone also occurs when the task requires integration....... hiện toàn bộ
Anomalous wave propagation in a one-dimensional acoustic metamaterial having simultaneously negative mass density and Young’s modulus
Journal of the Acoustical Society of America - Tập 132 Số 4 - Trang 2887-2895 - 2012
Hsin-Haou Huang, C.T. Sun
A mechanical model representing an acoustic metamaterial that exhibits simultaneously negative mass density and negative Young’s modulus was proposed. Wave propagation was studied in the frequency range of double negativity. In view of positive energy flow, it was found that the phase velocity in this range is negative. This phenomenon was also observed using transient wave propagation fin...... hiện toàn bộ
Sound transmission loss through metamaterial plate with lateral local resonators in the presence of external mean flow
Journal of the Acoustical Society of America - Tập 141 Số 2 - Trang 1161-1169 - 2017
Ting Wang, Meiping Sheng, Qing‐Hua Qin
In the context of sound incident upon a metamaterial plate, explicit formulas for sound transmission loss (STL) are derived in the presence of external mean flow. Metamaterial plate, consisting of homogeneous plate and lateral local resonators (LLRs), is homogenized by using effective medium method to obtain the effective mass density and facilitate the calculation of STL. Results show tha...... hiện toàn bộ
Quantitative linear and nonlinear resonance inspection techniques and analysis for material characterization: Application to concrete thermal damage
Journal of the Acoustical Society of America - Tập 136 Số 2 - Trang 537-546 - 2014
Cédric Payan, Timothy J. Ulrich, Pierre‐Yves Le Bas, Tarik A. Saleh, Maria José O. C. Guimarães
Developed in the late 1980s, Nonlinear Resonant Ultrasound Spectroscopy (NRUS) has been widely employed in the field of material characterization. Most of the studies assume the measured amplitude to be proportional to the strain amplitude which drives nonlinear phenomena. In 1D resonant bar experiments, the configuration for which NRUS was initially developed, this assumption holds. Howev...... hiện toàn bộ
The Brewster wave-number concept for elastodynamics
Journal of the Acoustical Society of America - Tập 94 Số 1 - Trang 576-579 - 1993
John J. Ditri, Akhlesh Lakhtakia
The existence of a Brewster wave number is demonstrated for the case of plane-wave reflection by a specularly smooth, planar interface joining two homogeneous, linearly elastic, isotropic solid half-spaces. Such a wave number is numerically shown to exist for two material combinations: steel–aluminum and steel–brass. The wave number can be such that plane waves are either propagating or ev...... hiện toàn bộ
Reflection-Refraction of a Stress Wave at a Plane Boundary between Anisotropic Media
Journal of the Acoustical Society of America - Tập 51 Số 1B - Trang 210-217 - 1972
Edmund G. Henneke
A review is given of the pertinent equations necessary to describe the reflected and refracted waves at a plane boundary between anisotropic media and the utility of the wave surface in discussing this problem. The critical angle phenomenon in anisotropic media is discussed in terms of the energy flux vector associated with the reflected and refracted modes. The critical angle is shown to ...... hiện toàn bộ
Stream ambient noise, spectrum and propagation of sounds in the goby Padogobius martensii: Sound pressure and particle velocity
Journal of the Acoustical Society of America - Tập 122 Số 5 - Trang 2881-2892 - 2007
Marco Lugli, Michael L. Fine
The most sensitive hearing and peak frequencies of courtship calls of the stream goby, Padogobius martensii, fall within a quiet window at around 100Hz in the ambient noise spectrum. Acoustic pressure was previously measured although Padogobius likely responds to particle motion. In this study a combination pressure (p) and particle velocity (u) detector was utilized to describe ambient no...... hiện toàn bộ
Recreational boating traffic: A chronic source of anthropogenic noise in the Wilmington, North Carolina Intracoastal Waterway
Journal of the Acoustical Society of America - Tập 122 Số 1 - Trang 151-160 - 2007
Genevieve Haviland-Howell, Adam S. Frankel, C. McA. Powell, Alessandro Bocconcelli, Russell L. Herman, Laela S. Sayigh
The majority of attention on the impact of anthropogenic noise on marine mammals has focused on low-frequency episodic activities. Persistent sources of mid-frequency noise pollution are less well studied. To address this data gap, the contribution of 25 physical, biological and anthropogenic factors to the ambient noise levels in the Wilmington, North Carolina Intracoastal Waterway were a...... hiện toàn bộ
Bubble oscillations of large amplitude
Journal of the Acoustical Society of America - Tập 68 Số 2 - Trang 628-633 - 1980
Joseph B. Keller, Michael J. Miksis
A new equation is derived for large amplitude forced radial oscillations of a bubble in an incident sound field. It includes the effects of acoustic radiation, as in Keller and Kolodner’s equation, and the effects of viscosity and surface tension, as in the modified Rayleigh equation due to Plesset, Noltingk and Neppiras, and Poritsky. The free and forced periodic solutions are computed nu...... hiện toàn bộ
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