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

Parallel Resonance01:23

Parallel Resonance

181
The parallel RLC circuit is an arrangement where the resistor (R), inductor (L), and capacitor (C) are all connected to the same nodes and, as a result, share the same voltage across them. The parallel RLC circuit is analyzed in terms of admittance (Y), which reflects the ease with which current can flow. The admittance is given by:
181
Sound Waves: Resonance01:14

Sound Waves: Resonance

2.5K
Resonance is produced depending on the boundary conditions imposed on a wave. Resonance can be produced in a string under tension with symmetrical boundary conditions (i.e., has a node at each end). A node is defined as a fixed point where the string does not move. The symmetrical boundary conditions result in some frequencies resonating and producing standing waves, while other frequencies interfere destructively. Sound waves can resonate in a hollow tube, and the frequencies of the sound...
2.5K
The Cochlea01:13

The Cochlea

44.5K
The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
44.5K
Echo01:06

Echo

486
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,...
486
Standing Waves in a Cavity01:28

Standing Waves in a Cavity

852
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
852

You might also read

Related Articles

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

Sort by
Same author

Distinctive hydrocephalus-like phenotype in NOTCH2NLC-related neuronal intranuclear inclusion disease: clinicopathological features and therapeutic implications.

Acta neuropathologica communications·2026
Same author

Decoding Early Neurochemical Dynamics in Circuit Dysfunction of Parkinson's Disease <i>via</i> Synergetic SERS and Electrophysiological Probe Suite.

Analytical chemistry·2026
Same author

Case Report: Severe protein S deficiency unmasks a cryptic <i>PROC</i> mutation with normal activity, triggering life-threatening pulmonary thromboembolism.

Frontiers in cardiovascular medicine·2026
Same author

[Evaluation of the therapeutic efficacy of retrograde diaphyseal Kirschner wire intramedullary fixation for pediatric distal radius metaphyseal-diaphyseal junction fractures].

Zhongguo gu shang = China journal of orthopaedics and traumatology·2026
Same author

High-field multi-cycle terahertz emission from axially cut β-BBO crystals reaching several hundred kV/cm.

Optics letters·2026
Same author

From nanotags to precision biomedicine: SERS-driven progress and innovation in tumor biomarker profiling, dynamic bioimaging, AI-enhanced diagnostics and therapy.

Theranostics·2026

Related Experiment Video

Updated: May 28, 2025

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
13:44

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

15.3K

Interlayer Parallel Connection of Multiple Helmholtz Resonators for Optional Broadband Low Frequency Sound

Xiaocui Yang1,2, Qiang Li3, Xinmin Shen4

  • 1Engineering Training Center, Nanjing Vocational University of Industry Technology, Nanjing 210023, China.

Materials (Basel, Switzerland)
|February 13, 2025
PubMed
Summary

A novel acoustic metamaterial, the interlayer parallel connection of multiple Helmholtz resonators (IPC-MHR), effectively reduces low-frequency noise. Optimized IPC-MHR designs achieve high sound absorption coefficients, offering practical noise suppression solutions.

Keywords:
Helmholtz resonatoracoustic metamaterialfinite element simulationinterlayer parallel connectionoptimizationsound absorption mechanismsound absorption performance

More Related Videos

Fabrication and Characterization of Superconducting Resonators
10:26

Fabrication and Characterization of Superconducting Resonators

Published on: May 21, 2016

10.6K
Author Spotlight: A Stable Phantom Material for Optical and Acoustic Imaging
04:54

Author Spotlight: A Stable Phantom Material for Optical and Acoustic Imaging

Published on: June 16, 2023

2.7K

Related Experiment Videos

Last Updated: May 28, 2025

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
13:44

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

15.3K
Fabrication and Characterization of Superconducting Resonators
10:26

Fabrication and Characterization of Superconducting Resonators

Published on: May 21, 2016

10.6K
Author Spotlight: A Stable Phantom Material for Optical and Acoustic Imaging
04:54

Author Spotlight: A Stable Phantom Material for Optical and Acoustic Imaging

Published on: June 16, 2023

2.7K

Area of Science:

  • Acoustics
  • Materials Science
  • Noise Reduction

Background:

  • Helmholtz resonance acoustic metamaterials are key for low-frequency noise reduction.
  • A challenge exists in balancing resonator number and cavity volume within a given area.
  • Single-layer metamaterials face limitations in achieving desired sound absorption.

Purpose of the Study:

  • To propose a novel acoustic metamaterial, the interlayer parallel connection of multiple Helmholtz resonators (IPC-MHR).
  • To investigate and optimize the sound absorption properties of the IPC-MHR.
  • To demonstrate the practical application potential of IPC-MHR for noise suppression.

Main Methods:

  • Finite element simulation was used to study sound absorption.
  • Particle swarm optimization algorithm was employed for property optimization.
  • Additive manufacturing and standing wave tube measurement validated the simulation results.

Main Results:

  • A four-layer IPC-MHR achieved an average sound absorption coefficient of 0.7769 in the [200-300] U [400-600] U [800-1250] Hz band.
  • Optimized IPC-MHR designs showed enhanced performance, with one achieving 0.8068 in 250-750 Hz.
  • A six-layer optimized IPC-MHR reached an average coefficient of 0.8454 in 300-950 Hz.

Conclusions:

  • The IPC-MHR demonstrates excellent wide-band, low-frequency sound absorption performance.
  • The proposed metamaterial design overcomes limitations of traditional single-layer structures.
  • IPC-MHR holds significant potential for practical applications in noise reduction.