Search research articles

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

Related Concept Videos

Vector Forms of Green’s Theorem

Vector Forms of Green’s Theorem

The study of fluid motion often involves understanding how local rotational behavior relates to global circulation. In the context of a pond with pollutants, direct measurement of water movement along an irregular shoreline can be impractical. Green’s Theorem in vector form provides an alternative by relating the circulation around a closed boundary to properties of the flow within the enclosed region.Measurements of water velocity at different points define a continuous vector field that...

Partial Differential Equations

Partial Differential Equations

A stone dropped into a still pond generates waves that propagate outward in circular patterns, creating a dynamic surface whose elevation depends on both position and time. At any given location, the water level oscillates as the wave passes, while at any fixed moment, the surface exhibits smooth, curved structures extending across space. This dual dependence requires a mathematical description that accounts for variation in multiple variables simultaneously.At a fixed point on the water...

Uniform Depth Channel Flow: Problem Solving

Uniform Depth Channel Flow: Problem Solving

To calculate the flow rate for a trapezoidal channel, first, identify the bottom width, side slope, and flow depth of the channel. The cross-sectional area (A) corresponding to the depth of flow (y), channel bottom width (B), and side slope (θ) is determined by:Next, calculate the wetted perimeter, which includes the bottom width and the sloped side lengths in contact with the water. Using the values of the cross-sectional area and the wetted perimeter, determine the hydraulic radius by...

Deriving the Speed of Sound in a Liquid

Deriving the Speed of Sound in a Liquid

As with waves on a string, the speed of sound or a mechanical wave in a fluid depends on the fluid's elastic modulus and inertia. The two relevant physical quantities are the bulk modulus and the density of the material. Indeed, it turns out that the relationship between speed and the bulk modulus and density in fluids is the same as that between the speed and the Young's modulus and density in solids.
The speed of sound in fluids can be derived by considering a mechanical wave propagating...

Propagation of Waves

Propagation of Waves

When a wave propagates from one medium to another, part of it may get reflected in the first medium, and part of it may get transmitted to the second medium. In such a case, the interface of the two mediums can be considered as a boundary that is neither fixed nor free.
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...

Sound as Pressure Waves

Sound as Pressure Waves

Sound waves, which are longitudinal waves, can be modeled as the displacement amplitude varying as a function of the spatial and temporal coordinates. As a column of the medium is displaced, its successive columns are also displaced. As the successive displacements differ relatively, a pressure difference with the surrounding pressure is created. The gauge pressure varies across the medium.
The pressure fluctuation depends on the difference in displacements between the successive points in the...

You might also read

Related Articles

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

Sort by

Same author

Dynamic interface behavior in coupled plates: Investigating Lamb wave mode repulsion with a spring-based model.

Ultrasonics·2025

Same author

Determination of isotropic elastic constants from dispersion images based on ultrasonic guided waves by using neural networks.

Ultrasonics·2024

Same author

Towards Interpretable Machine Learning for Automated Damage Detection Based on Ultrasonic Guided Waves.

Sensors (Basel, Switzerland)·2022

Same author

Localization of Transient Events Threatening Pipeline Integrity by Fiber-Optic Distributed Acoustic Sensing.

Sensors (Basel, Switzerland)·2019

Same author

Computation of dispersion relations for axially symmetric guided waves in cylindrical structures by means of a spectral decomposition method.

Ultrasonics·2015

Same author

Quantitative evaluation of ultrasonic C-scan image in acoustically homogeneous and layered anisotropic materials using three dimensional ray tracing method.

Ultrasonics·2013

Search research articles

Related Experiment Video

Updated: Jun 10, 2026

Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing

Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing

Published on: February 13, 2018

Improving the statistical wave field description using the Waterhouse correction.

Jens Prager¹, Bjoern A T Petersson

¹Department of Non-Destructive Testing, Acoustic and Electromagnetical Methods Division, Federal Institute for Materials Research and Testing, Unter den Eichen 87, D-12205 Berlin, Germany. jens.prager@bam.de

The Journal of the Acoustical Society of America

|July 24, 2010

Summary

Statistical Energy Analysis (SEA) and room acoustics models are improved for boundary proximity. A new method enhances predictions by including position and frequency dependence, validated with simulations.

More Related Videos

Near-Infrared Temperature Measurement Technique for Water Surrounding an Induction-heated Small Magnetic Sphere

Near-Infrared Temperature Measurement Technique for Water Surrounding an Induction-heated Small Magnetic Sphere

Published on: April 30, 2018

Related Experiment Videos

Last Updated: Jun 10, 2026

Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing

Measurements of Waves in a Wind-wave Tank Under Steady and Time-varying Wind Forcing

Published on: February 13, 2018

Near-Infrared Temperature Measurement Technique for Water Surrounding an Induction-heated Small Magnetic Sphere

Near-Infrared Temperature Measurement Technique for Water Surrounding an Induction-heated Small Magnetic Sphere

Published on: April 30, 2018

Area of Science:

Acoustics
Vibrational Analysis
Computational Mechanics

Background:

The diffuse field assumption in Statistical Energy Analysis (SEA) and room acoustics is inaccurate near boundaries.
This limitation affects predictions for systems with localized sources or receivers.

Purpose of the Study:

To propose a simple SEA correction for boundary effects in rectangular rooms and plate-like structures.
To incorporate Waterhouse's correction using spherical Bessel functions into SEA predictions.
To introduce position and frequency dependence into SEA results.

Main Methods:

Applying a modified SEA approach incorporating spherical Bessel functions.
Developing analytical solutions for specific boundary conditions on plates (corner and edge positions).
Validating the enhanced SEA method through comparisons with modal analysis and finite element calculations.

Main Results:

The modified SEA approach successfully accounts for boundary proximity effects.
SEA predictions gain position and frequency dependence, improving accuracy.
Analytical solutions for plate structures confirm the method's validity.

Conclusions:

The proposed SEA modification effectively addresses the diffuse field assumption violation near boundaries.
This approach enhances the predictive accuracy of SEA for various structures and boundary conditions.
The method offers a valuable tool for acoustic and vibrational analysis in complex scenarios.