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6 Results Found

  • Article
  • Open Access
8 Citations
4,282 Views
13 Pages

2 September 2021

In order to enhance the sensitivity of a Fabry–Perot (F-P) acoustic sensor without the need of fabricating complicated structures of the acoustic-sensitive diaphragm, a mini-type external sound pressure amplification structure (SPAS) with double 10 μ...

  • Article
  • Open Access
1,868 Views
18 Pages

Experimental Investigation into the Active Narrowband Reshaping of a Ship Model’s Acoustic Signature

  • Steffen Ungnad,
  • Delf Sachau,
  • Carsten Zerbs,
  • Andreas Müller and
  • Anton Homm

The use of inertial actuators to control the radiated sound pressure of a steel ship model at a lake measurement facility is examined. Therefore, methods of active vibration control as well as active control of target sound fields are applied using a...

  • Article
  • Open Access
7 Citations
3,317 Views
13 Pages

16 March 2020

Cell photoacoustic detection faces the problem where the strength of the sound wave signal is so weak that it easily gets interfered by other acoustic signals. A sonic triode model based on an artificial periodic structure is designed by COMSOL Multi...

  • Article
  • Open Access
4 Citations
1,886 Views
18 Pages

Effects of Periodic Materials on Distance Attenuation in Wall–Slab Structures: An Experiment

  • Jongwoo Cho,
  • Kwonsik Song,
  • Nahyun Kwon,
  • Moonseo Park and
  • Tae Wan Kim

This research examines the application of periodic materials in wall–slab structures to mitigate impact noise and vibration propagation, a prevalent issue in multifamily housing. Traditional methods, such as floating floors, have proven insuffi...

  • Article
  • Open Access
401 Views
25 Pages

26 November 2025

Persistent discrepancies remain in the perceived far-field noise of automotive permanent-magnet synchronous motors (PMSMs) and the predictions of conventional NVH simulations. To bridge this gap, a Tri-source Electromagnetic Coupling NVH Integrated F...

  • Article
  • Open Access
3 Citations
2,406 Views
17 Pages

28 April 2021

Our concern in this paper is in the fine-tuning of the arbitrary parameters within the upstream turbulence structure for the acoustic spectrum of a rapid-distortion theory (RDT)-based model of trailing-edge noise. RDT models are based on an appropria...