Search
Search Results
-
Design of flat broadband sound insulation metamaterials by combining Helmholtz resonator and fractal structure
A new sound insulation metamaterial (SIM) is designed by combining a Helmholtz resonator and a fractal structure for sound insulation in the...
-
Optimization of material thickness distribution in single and double partition panels for maximized sound insulation
In this work, we propose a method to optimize the material thickness distribution of partition panels for maximized sound insulation while...
-
Membrane-Type Acoustic Metamaterials Carrying Asymmetric Arc/Platelet Masses for Sound Insulation
ObjectiveThis study presents a novel membrane-type acoustic metamaterial (MAM) with loaded masses of asymmetric dimensions and arrangements. The...
-
Sound Generation
For the development of primary, constructive noise reduction measures, knowledge of the sound generation mechanisms is decisive. In the following,...
-
Estimation of the Changes in Sound-Proofing Characteristics of Structural Panels Subject to High-Intensity Acoustic Loading
AbstractAn approach based on analysis of acoustic loads, which makes it possible to use the experimentally obtained characteristics of sound...
-
The noise spectral characteristics and noise reduction schemes of screw air-source heat pump: A case study
The screw air-source heat pump can cause incessant high noise levels during operation, which might hinder adoption of this energy-efficient heat...
-
Investigation into the sound absorptivity of perforated panels with tapered hole geometries coupled with polyurethane foam
This investigation explores the improvement of acoustic properties in perforated panels enhanced with polyurethane foam for architectural and...
-
Forbidden Transmission of Broadband Duct Noise Realized by Compactly Placed Detuned Resonators
Effective broadband duct sound propagation control is highly required in many practical engineering applications. In this study, a compact structure...
-
Experimental Investigation of Sound Absorption Properties of the Damped Sonic Black Holes
The Sonic Black Holes (SBH) absorber consists a cylindrical cavity with a set of rigid thin rings. The inner diameters of the rings are gradually...
-
Topology optimization with a parametric level set method for double porosity poroelastic sound-absorbing structures
The mesoscopic pores of double-porosity media are usually designed to enhance the pressure diffusion effect to improve sound absorption. In this...
-
Influence of Glazing on Sound Quality in the Car: Validation of Auralizations Obtained from SEA Calculations
This paper explores the possibility to use statistical energy analysis (SEA)-based computations to synthesize sounds that can be used in a subjective...
-
Review of Underwater Anechoic Coating Technology Under Hydrostatic Pressure
The underwater anechoic coating technology, which considers pressure resistance and low-frequency broadband sound absorption, has become a research...
-
Numerical simulation and experimental study of a broadband acoustic metamaterial duct muffler considering thermal-viscous loss
In this paper, a sub-wavelength sector acoustic metamaterial (SAM) cell was presented for duct noise attenuation. A numerical model considering...
-
Study on the Noise Control Technology in the Batching Room of a Dairy Production Enterprise
Dairy products have become an important part of people’s daily diet, but the noise in the batching room of the dairy production enterprise is harmful...
-
Research on Acoustic Properties of Laminated Aluminum Foam Panels
In view of the increasingly prominent noise problem, more and more attention has been paid to the research of sound insulation materials and...
-
Effect of Perforated Aluminum on the Sound Absorption Ability of Calotropis gigantea Fiber Material
An excellent example of plant-based fiber used for noise reduction is Calotropis gigantean (CG). This research aimed to determine the sound...
-
-
Active structural acoustic control for radiated sound power reduction of enclosure with vent holes based on radiation modes
The radiated sound power in an enclosure with a vent hole is actively controlled by radiation mode. Active structural acoustic control (ASAC), which...
-
Broadband design of acoustic metasurfaces for the stabilization of a Mach 4 boundary layer flow
A piecewise acoustic metasurface is designed to suppress the first mode while marginally amplifying the Mack second mode in a Mach 4 flat-plate...
-
Interior Noise Prediction of Metro Train in a Tunnel Caused by Wheel/Rail Rolling
Metro running causes wheel/rail rolling radiation noise and reflects multiple times between the tunnel wall and the car body. Reverberation in a...
