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

Echo

Echo

The human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
Imagine the sound is reflected back to the ears. Assuming that the source is very close to the human, the difference between hearing the two sounds—the emitted sound and the reflected sound—may be more than the minimum time for perceiving distinct sounds. If this is the case, then the...

Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview

Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview

Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
The ATR process begins by directing a beam...

X-ray Imaging

X-ray Imaging

German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with X-rays, and by 1900, X-ray was widely...

Atomic Absorption Spectroscopy: Radiation and Light Sources

Atomic Absorption Spectroscopy: Radiation and Light Sources

Atomic absorption spectroscopy (AAS) relies on the Beer-Lambert law, which requires that the radiation source emits a narrow range of wavelengths to match the absorption characteristics of the analyte atom. The primary criteria for choosing an appropriate radiation source in AAS is to provide a precise and intense emission at specific wavelengths that will allow accurate detection of the analyte.
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...

Absorption of Radiation

Absorption of Radiation

The rate of heat transfer by emitted radiation is described by the Stefan-Boltzmann law of radiation:

Source Transformation for AC Circuits

Source Transformation for AC Circuits

The process of source transformation in the frequency domain entails the conversion of a voltage source, positioned in series with an impedance, into a current source that is parallel to an impedance, or the other way around. It is essential to maintain the following relationships while transitioning from one source type to another.

You might also read

Related Articles

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

Sort by

Same author

Sex differences in vocal behavior in virtual rooms compared to real rooms.

JASA express letters·2024

Same author

Just noticeable difference for simulation accuracy between full and reduced order models (L).

The Journal of the Acoustical Society of America·2024

Same author

Sound propagation in realistic interactive 3D scenes with parameterized sources using deep neural operators.

Proceedings of the National Academy of Sciences of the United States of America·2024

Same author

Sensitivity of the predicted acoustic pressure field to the wind and temperature profiles in a conventionally neutral boundary layer.

The Journal of the Acoustical Society of America·2023

Same author

Reduced order modelling using parameterized non-uniform boundary conditions in room acoustic simulations.

The Journal of the Acoustical Society of America·2023

Same author

Hidden energies around surfaces, edges, and corners in rooms.

The Journal of the Acoustical Society of America·2022

Search research articles

Related Experiment Video

Updated: May 10, 2026

Three-dimensional Optical-resolution Photoacoustic Microscopy

Three-dimensional Optical-resolution Photoacoustic Microscopy

Published on: May 3, 2011

Combination of acoustical radiosity and the image source method.

Georgios I Koutsouris¹, Jonas Brunskog, Cheol-Ho Jeong

¹Acoustic Technology, DTU Electro, Technical University of Denmark, Kongens Lyngby DK-2800, Denmark. gk@odeon.dk

The Journal of the Acoustical Society of America

|June 8, 2013

Summary

This study introduces a unified room acoustics model combining acoustical radiosity and image source methods for precise energy impulse response predictions. The model accurately captures diffuse and specular reflections in various room geometries.

More Related Videos

Dual Raster-Scanning Photoacoustic Small-Animal Imager for Vascular Visualization

Dual Raster-Scanning Photoacoustic Small-Animal Imager for Vascular Visualization

Published on: July 15, 2020

Evanescent Field Based Photoacoustics: Optical Property Evaluation at Surfaces

Evanescent Field Based Photoacoustics: Optical Property Evaluation at Surfaces

Published on: July 26, 2016

Related Experiment Videos

Last Updated: May 10, 2026

Three-dimensional Optical-resolution Photoacoustic Microscopy

Three-dimensional Optical-resolution Photoacoustic Microscopy

Published on: May 3, 2011

Dual Raster-Scanning Photoacoustic Small-Animal Imager for Vascular Visualization

Dual Raster-Scanning Photoacoustic Small-Animal Imager for Vascular Visualization

Published on: July 15, 2020

Evanescent Field Based Photoacoustics: Optical Property Evaluation at Surfaces

Evanescent Field Based Photoacoustics: Optical Property Evaluation at Surfaces

Published on: July 26, 2016

Area of Science:

Room acoustics
Architectural acoustics
Acoustical modeling

Background:

Accurate room acoustic predictions are crucial for designing spaces like concert halls and studios.
Existing models often treat diffuse and specular reflections separately, limiting unified analysis.
A need exists for a comprehensive model that integrates both reflection types for enhanced prediction accuracy.

Purpose of the Study:

To develop a unified model for room acoustic predictions that integrates diffuse and specular reflections.
To improve the accuracy and detail of energy impulse response predictions in arbitrary polyhedral rooms.
To validate the proposed model against real-world measured data.

Main Methods:

Incorporation of acoustical radiosity for diffuse reflections and the image source method for specular reflections.
Formulation based on the conservation of acoustical energy, incorporating energy absorption and scattering coefficients.
Dynamic control of image source production, eliminating the need for a fixed maximum reflection order.

Main Results:

The combined model successfully unifies the treatment of diffuse and specular reflections.
Energy impulse response predictions were optimized for arbitrary polyhedral rooms.
Validation against measured data from a music studio hall demonstrated high accuracy.

Conclusions:

The proposed unified model offers a promising approach for detailed and accurate room acoustic predictions.
Integration of diffuse and specular reflection modeling enhances the fidelity of acoustical simulations.
The model's flexibility and accuracy make it suitable for diverse architectural acoustics applications.