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Showing 1 to 12 of 6002 entries
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Effects of symmetrical foundation on sound radiation from a submarine hull structure.

The Journal of the Acoustical Society of America

Li C, Su J, Wang J, Hua H.
PMID: 26627793
J Acoust Soc Am. 2015 Nov;138(5):3195-201. doi: 10.1121/1.4935403.

The effects of a passive noise control method for suppressing sound radiation from a submarine hull structure are investigated. The control method is realized by symmetrizing the foundation about the horizontal plane. The coupled finite element method and boundary...

Investigation of interfacial stiffnesses of a tri-layer using Zero-Group Velocity Lamb modes.

The Journal of the Acoustical Society of America

Mezil S, Bruno F, Raetz S, Laurent J, Royer D, Prada C.
PMID: 26627794
J Acoust Soc Am. 2015 Nov;138(5):3202-9. doi: 10.1121/1.4934958.

Zero-Group Velocity (ZGV) Lamb waves are studied in a structure composed of two plates bonded by an adhesive layer. The dispersion curves are calculated for a Duralumin/epoxy/Duralumin sample, where the adhesion is modeled by a normal and a tangential...

Passive acoustic observations of tide height in the Iroise Sea using ambient noise.

The Journal of the Acoustical Society of America

Kinda GB, Bonnel J.
PMID: 26428830
J Acoust Soc Am. 2015 Sep;138(3):EL299-304. doi: 10.1121/1.4929740.

Considering a broadband motionless source in a waveguide with a depth that varies with time, the time-frequency representation of the acoustic intensity shows a striation pattern than can be explained using the depth-frequency waveguide invariant. This phenomenon is used...

Identification of categories of liquid sounds.

The Journal of the Acoustical Society of America

Guyot P, Houix O, Misdariis N, Susini P, Pinquier J, André-Obrecht R.
PMID: 28863587
J Acoust Soc Am. 2017 Aug;142(2):878. doi: 10.1121/1.4996124.

Sounds involving liquid sources are part of everyday life. They form a category of sounds easily identified by human listeners in different experimental studies. Unlike acoustic models that focus on bubble vibrations, real life instances of liquid sounds, such...

Near-field sound radiation of fan tones from an installed turbofan aero-engine.

The Journal of the Acoustical Society of America

McAlpine A, Gaffney J, Kingan MJ.
PMID: 26428770
J Acoust Soc Am. 2015 Sep;138(3):1313-24. doi: 10.1121/1.4928130.

The development of a distributed source model to predict fan tone noise levels of an installed turbofan aero-engine is reported. The key objective is to examine a canonical problem: how to predict the pressure field due to a distributed...

Entropy rate defined by internal wave scattering in long-range propagation.

The Journal of the Acoustical Society of America

Morozov AK, Colosi JA.
PMID: 26428774
J Acoust Soc Am. 2015 Sep;138(3):1353-64. doi: 10.1121/1.4928617.

The reduction of information capacity of the ocean sound channel due to scattering by internal waves is a potential problem for acoustic communication, navigation, and remote sensing over long ranges. In spite of recent progress in research on acoustic...

Time-varying feedback matrices in feedback delay networks and their application in artificial reverberation.

The Journal of the Acoustical Society of America

Schlecht SJ, Habets EA.
PMID: 26428777
J Acoust Soc Am. 2015 Sep;138(3):1389-98. doi: 10.1121/1.4928394.

This paper introduces a time-variant reverberation algorithm as an extension of the feedback delay network (FDN). By modulating the feedback matrix nearly continuously over time, a complex pattern of concurrent amplitude modulations of the feedback paths evolves. Due to...

Nonuniform piezoelectric circular plate flexural transducers with underwater applications.

The Journal of the Acoustical Society of America

Aronov BS.
PMID: 26428794
J Acoust Soc Am. 2015 Sep;138(3):1570-84. doi: 10.1121/1.4928956.

An analytical treatment is presented for circular flexural plate transducers that have nonuniform electromechanically active-passive mechanical systems with particular interest in underwater applications. The analysis is made using the energy method that was previously applied to calculating parameters of...

Benefits and applications of laser-induced sparks in real scale model measurements.

The Journal of the Acoustical Society of America

Gómez-Bolaños J, Delikaris-Manias S, Pulkki V, Eskelinen J, Hæggström E, Jeong CH.
PMID: 26428809
J Acoust Soc Am. 2015 Sep;138(3):EL175-80. doi: 10.1121/1.4929623.

The characteristics of using a laser-induced spark as a monopole source in scale model measurements were assessed by comparison with an electric spark and a miniature spherical loudspeaker. Room impulse responses of first order directivity sources were synthesized off-line...

Generation of half-space sound fields with application to personal sound systems.

The Journal of the Acoustical Society of America

Poletti MA, Fazi FM.
PMID: 27036266
J Acoust Soc Am. 2016 Mar;139(3):1294-302. doi: 10.1121/1.4944671.

A method is presented for generating a sound field that is significantly attenuated over half of the reproduction region, which has application to the generation of two independent sound fields for two listeners. The half-space sound field is produced...

Auditory masking of speech in reverberant multi-talker environments.

The Journal of the Acoustical Society of America

Weller T, Buchholz JM, Best V.
PMID: 27036267
J Acoust Soc Am. 2016 Mar;139(3):1303-13. doi: 10.1121/1.4944568.

Auditory localization research needs to be performed in more realistic testing environments to better capture the real-world abilities of listeners and their hearing devices. However, there are significant challenges involved in controlling the audibility of relevant target signals in...

Robust spot-poled membrane hydrophones for measurement of large amplitude pressure waveforms generated by high intensity therapeutic ultrasonic transducers.

The Journal of the Acoustical Society of America

Wilkens V, Sonntag S, Georg O.
PMID: 27036269
J Acoust Soc Am. 2016 Mar;139(3):1319-32. doi: 10.1121/1.4944693.

The output characterization of medical high intensity therapeutic ultrasonic devices poses several challenges for the hydrophones to be used for pressure measurements. For measurements at clinical levels in the focal region, extreme robustness, broad bandwidth, large dynamic range, and...

Showing 1 to 12 of 6002 entries