Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Sound Intensity00:58

Sound Intensity

4.6K
The loudness of a sound source is related to how energetically the source is vibrating, consequently making the molecules of the propagation medium vibrate. To measure the loudness of a source, the physical quantity of interest is the intensity. This is defined as the energy emitted per unit of time per unit of area perpendicular to the sound wave's propagation direction. Since the total energy is greater if the source vibrates for a longer duration and over a larger area, dividing the...
4.6K
Echo01:06

Echo

806
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,...
806
Sound Intensity Level00:53

Sound Intensity Level

4.7K
Humans perceive sound by hearing. The human ear helps sound waves reach the brain, which then interprets the waves and creates the perception of hearing. The loudness of the environment in which a person is located determines whether they can distinguish between different sound sources.
The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and...
4.7K
Interference: Path Lengths01:10

Interference: Path Lengths

1.7K
Consider two sources of sound, that may or may not be in phase, emitting waves at a single frequency, and consider the frequencies to be the same.
Two special sources may be considered when they are in phase. This can be easily achieved by feeding the two sources from the same source. An example would be synchronizing the two speakers by feeding them with the same source, such as the sound waves produced by a tuning fork. This setup ensures that the two sources have the same frequency and are...
1.7K
Distance Measurements by Taping01:18

Distance Measurements by Taping

315
Tapes are essential in surveying for accurate, durable, and short-distance measurements. Made from lightweight, nylon-coated steel, they offer flexibility and strength for rugged outdoor use. The nylon coating protects against rust and wear, extending the tape's life. Standard lengths, around 30 meters, are marked in meters and millimeters for precision.Surveyors select tapes based on site conditions and accuracy needs. Lightweight, nylon-coated tapes are commonly used for ease of handling and...
315
Intensity and Pressure of Sound Waves01:05

Intensity and Pressure of Sound Waves

1.5K
The intensity of sound waves can be related to displacement and pressure amplitudes by using their wave expressions and the definition of intensity. The critical step to achieve this is to write the power delivered by the particles on the wave as the product of force and velocity and simplify the force per unit area as the pressure. The velocity of the medium's particles can be derived from the displacement.
Unlike the time average of a sinusoidal term, which is zero since it is positive...
1.5K

You might also read

Related Articles

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

Sort by
Same journal

Genetic algorithm-informed microjet control for noise reduction in supersonic impinging jetsa).

The Journal of the Acoustical Society of America·2026
Same journal

Physics-regularized neural acoustic fields for spatial layout inference from sparse room impulse responsesa).

The Journal of the Acoustical Society of America·2026
Same journal

Impedance eduction method based on multiple measurements with different incident modes in cylindrical ducts with reflective terminations.

The Journal of the Acoustical Society of America·2026
Same journal

Review of ultrasonic methods for monitoring, damage detection, and processing of lithium-ion batteries throughout their life cycle.

The Journal of the Acoustical Society of America·2026
Same journal

Assessment of silver nanoparticle mediated changes in osmotic fragility of red blood cells by a LASER diode based photoacoustic system.

The Journal of the Acoustical Society of America·2026
Same journal

Topographic effects on reflected acoustic waves from the OSIRIS-REx reentry observed from stratospheric balloons.

The Journal of the Acoustical Society of America·2026

Related Experiment Video

Updated: Dec 13, 2025

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention
04:32

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention

Published on: December 20, 2024

703

Distance estimation of a sound source using the multiple intensity vectors.

In-Jee Jung1, Jeong-Guon Ih1

  • 1Center for Noise and Vibration Control, Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Koreainjee@kaist.ac.kr, J.G.Ih@kaist.ac.kr.

The Journal of the Acoustical Society of America
|August 6, 2020
PubMed
Summary

This study introduces a method for estimating acoustic source distance using three-dimensional acoustic intensimetry. By excluding divergent vectors caused by geometric singularity, estimation errors can be significantly reduced.

More Related Videos

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
11:54

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles

Published on: March 13, 2017

9.7K
Estimating Vestibular Perceptual Thresholds Using a Six-Degree-Of-Freedom Motion Platform
06:31

Estimating Vestibular Perceptual Thresholds Using a Six-Degree-Of-Freedom Motion Platform

Published on: August 4, 2022

3.5K

Related Experiment Videos

Last Updated: Dec 13, 2025

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention
04:32

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention

Published on: December 20, 2024

703
Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
11:54

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles

Published on: March 13, 2017

9.7K
Estimating Vestibular Perceptual Thresholds Using a Six-Degree-Of-Freedom Motion Platform
06:31

Estimating Vestibular Perceptual Thresholds Using a Six-Degree-Of-Freedom Motion Platform

Published on: August 4, 2022

3.5K

Area of Science:

  • Acoustics
  • Signal Processing
  • Metrology

Background:

  • Acoustic source localization is crucial in various fields.
  • Accurate estimation of source distance is challenging due to factors like probe spacing and geometric singularities.
  • Existing methods may suffer from significant errors in specific configurations.

Purpose of the Study:

  • To develop and validate a method for estimating acoustic source distance using three-dimensional acoustic intensimetry.
  • To investigate the impact of probe spacing, source localization error, and source distance on estimation accuracy.
  • To mitigate errors arising from geometric singularities in acoustic vector fields.

Main Methods:

  • Implementation of three-dimensional acoustic intensimetry with multiple probe-modules.
  • Calculation of nearest intersection points of acoustic intensity vectors to estimate source distance.
  • Numerical and experimental validation using three probe-modules in an equilateral triangle configuration.
  • Analysis of vector divergence caused by geometric singularity.

Main Results:

  • Acoustic source distance estimation accuracy is influenced by probe spacing, localization error, and distance.
  • Geometric singularities can cause acoustic intensity vectors to diverge, leading to significant estimation errors.
  • Excluding divergent vectors identified as causing divergence significantly reduces the large errors associated with geometric singularity.

Conclusions:

  • Three-dimensional acoustic intensimetry is a viable technique for source distance estimation.
  • Geometric singularity poses a challenge, but its impact can be managed by selectively excluding problematic vectors.
  • The proposed method offers improved accuracy for acoustic source distance estimation in challenging scenarios.