美国科研出版社期刊
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作者:Haydar Aygün
来源:[J].Open Journal of Acoustics, 2017, Vol.07 (02), pp.27-38Scientific Research Publishing
摘要:Sound absorbers including porous materials are used widely for noise control. The most widely-exploited and acknowledged absorption mechanism in porous materials is viscous friction due to relative motion between solid and fluid. Acoustical performance of woven (carpet) and nonwo...
作者:Shaum P. Bhagat , Anusha Yellamsetty
来源:[J].Open Journal of Acoustics, 2017, Vol.07 (03), pp.69-82Scientific Research Publishing
摘要:Stimulation of medial olivocochlear (MOC) efferent neurons reduces basilar membrane (BM) sensitivity and increases the slope of BM input-output (I/O) functions in animal models. Decreased compression of I/O functions associated with activation of MOC efferent neurons may assist i...
作者:Fabián Acquaticci , Maximiliano M. Yommi , Sergio N. Gwirc ...
来源:[J].Open Journal of Acoustics, 2017, Vol.07 (03), pp.83-93Scientific Research Publishing
摘要:Acoustic measurements or ultrasonic testing can be strongly affected by reflections or echoes from test tank walls. In order to create a non-reflecting environment equivalent to infinite medium, a pyramidal structured absorber (PSA) can be used to coat the walls of an ultras...
作者:Jesús Madrigal-Melchor , Agustín Enciso-Muñ , oz ...
来源:[J].Open Journal of Acoustics, 2017, Vol.07 (03), pp.39-51Scientific Research Publishing
摘要:Using the transfer matrix method we calculate the frequency dependence of the transmission of longitudinal elastic waves for a layered structure where the specific acoustic impedance of the layers with odd numbering follows a Gaussian distribution, while the inserted even layers ...
作者:William A. Hibbert , Shahram Taherzadeh , David B. Sharp
来源:[J].Open Journal of Acoustics, 2017, Vol.07 (03), pp.52-68Scientific Research Publishing
摘要:It is well established that musical sounds comprising multiple partials with frequencies approximately in the ratio of small integers give rise to a strong sensation of pitch even if the lowest or fundamental partial is missing—the so-called virtual pitch effect. Experiments...
作者:Mohammad Al Zubi
来源:[J].Open Journal of Acoustics, 2018, Vol.08 (01), pp.1-11Scientific Research Publishing
摘要:The availability of ideal conditions like anechoic chamber to characterize some sound parameters, like sound intensity and sound power necessities the determination of free field and cut off frequency measurements. In this article, full experiment was executed at Wayne State Univ...
作者:Mohammad Al Zubi
来源:[J].Open Journal of Acoustics, 2018, Vol.08 (02), pp.13-22Scientific Research Publishing
摘要:In real life, when a noise problem occurs, it is important to identify the cause and measure the noise of the source, since it may affect human beings or other constructions due to vibration generated from noise, so it is necessary to determine the noise related to a specific sou...
作者:Navid Nassaji , Masoume Shafieian
来源:[J].Open Journal of Acoustics, 2018, Vol.08 (02), pp.23-35Scientific Research Publishing
摘要:Detection and localization of acoustic events in an environment are important to protect the military and civilian installations. While there are finite paths of wave propagation in simple or low reverberant environments, in complex environments (e.g. a complex urban environment)...
作者:Yuta Tamai , Kazuyuki Matsumoto , Shizuko Hiryu ...
来源:[J].Open Journal of Acoustics, 2018, Vol.08 (03), pp.52-60Scientific Research Publishing
摘要:An extra-cochlear stimulation system has been investigated as a less invasive alternative to conventional cochlear implant; however, the system is used primarily as a speech-reading aid. The purpose of this study was to develop a speech encoding scheme for the extra-cochlear stim...
作者:Ahmed El-Hadad , Graham Ian Brodie , Berhan Shiday Ahmed
来源:[J].Open Journal of Acoustics, 2018, Vol.08 (03), pp.37-51Scientific Research Publishing
摘要:This experiment aims to study the effects and modifications that occurred on acoustic signal harmonics when travelling through wood. The experiment measured the output amplitudes and frequencies of the travelling signals and compared them with the original input signal. The ...

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