Search research articles

Related Concept Videos

Mesh Analysis for AC Circuits

Mesh Analysis for AC Circuits

In the domain of radio communication, the significance of impedance matching must be considered. It is crucial to ensure the efficient transmission of signals between radio transmitters and receivers. Achieving this balance involves using impedance-matching circuits, with one fundamental configuration comprising a resistor, capacitor, and inductor.
The process of harmonizing these impedances begins with a clear understanding of the input and output signals. Once these signals are known, the...

Anatomy of the Ear

Anatomy of the Ear

Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...

Chebyshev's Theorem to Interpret Standard Deviation

Chebyshev's Theorem to Interpret Standard Deviation

Chebyshev’s theorem, also known as Chebyshev’s Inequality, states that the proportion of values of a dataset for K standard deviation is calculated using the equation:

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

A Multicenter Investigation of Minimally Invasive Sample Processing and the Pre-Analytic Assessment of NSCLC Small Biopsy Specimens for Molecular Testing.

Diagnostics (Basel, Switzerland)·2026

Same author

Negative radiation force on sound-hard non-spherical objects: Enhanced by geometric asymmetry and formation of negative stiffness system.

The Journal of the Acoustical Society of America·2025

Same author

Comparison of three specimen collection techniques in tissue coagulum clot-based cell block preparation of endobronchial ultrasound-guided transbronchial needle aspiration.

Pathology, research and practice·2024

Same author

Computation of acoustic scattered fields and derived radiation force and torque for axisymmetric objects at arbitrary orientations.

The Journal of the Acoustical Society of America·2024

Same author

Decomposition-assisted analysis of transmission in periodic resonator arrays using mode-matching method.

The Journal of the Acoustical Society of America·2024

Same author

Psychometric properties of the Cognitive Functioning Self-Assessment Scale in community-dwelling adults: A cross-sectional online survey.

Frontiers in psychology·2023

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Video

Updated: Jun 27, 2026

Studying Cavitation Enhanced Therapy

Studying Cavitation Enhanced Therapy

Published on: April 9, 2021

Membrane covered duct lining for high-frequency noise attenuation: prediction using a Chebyshev collocation method.

¹Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China. lixi.huang@hku.hk

The Journal of the Acoustical Society of America

|December 3, 2008

Summary

This summary is machine-generated.

A new spectral method enhances sound absorption in ducts. A tensioned membrane cover improves high-frequency sound dissipation by scattering waves into higher-order modes for better absorption.

More Related Videos

The Measurement of Unsteady Surface Pressure Using a Remote Microphone Probe

The Measurement of Unsteady Surface Pressure Using a Remote Microphone Probe

Published on: December 3, 2016

Related Experiment Videos

Last Updated: Jun 27, 2026

Studying Cavitation Enhanced Therapy

Studying Cavitation Enhanced Therapy

Published on: April 9, 2021

The Measurement of Unsteady Surface Pressure Using a Remote Microphone Probe

The Measurement of Unsteady Surface Pressure Using a Remote Microphone Probe

Published on: December 3, 2016

Area of Science:

Acoustics
Computational Mechanics
Fluid Dynamics

Background:

Duct lining is crucial for sound absorption, but often ineffective at high frequencies.
Flexible walls backed by cavities can enhance sound absorption.
Porous materials may be included in the backing cavities.

Purpose of the Study:

Introduce a spectral method of Chebyshev collocation with domain decomposition for sound-structure interaction in lined ducts.
Validate the method's spectral convergence and accuracy.
Investigate the effectiveness of a tensioned membrane cover for high-frequency sound absorption.

Main Methods:

Chebyshev collocation spectral method with domain decomposition.
Incorporation of nonlocal, exact Dirichlet-to-Neumann boundary conditions.
Validation against analytical solutions and comparison with Fourier-Galerkin and finite element methods.

Main Results:

The spectral method shows accurate convergence for 1D and 2D duct configurations.
A tensioned membrane cover significantly enhances sound absorption at high frequencies.
The membrane scatters incident plane waves into higher-order modes, improving dissipation.

Conclusions:

The developed spectral method is accurate and efficient for analyzing sound-structure interaction in lined ducts.
Tensioned membrane covers offer a practical solution for improving high-frequency sound absorption in ducts.
The study quantifies the additional attenuation provided by the membrane cover.