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

Electromagnetic Waves01:30

Electromagnetic Waves

10.3K
James Clerk Maxwell formulated a single theory combining all the electric and magnetic effects scientists knew during that time, calling the phenomena his theory predicted “Electromagnetic waves”. He brought together all the work that had been done by brilliant physicists such as Oersted, Coulomb, Gauss, and Faraday and added his own insights to develop the overarching theory of electromagnetism. Maxwell’s equations, combined with the Lorentz force law, encompass all the laws...
10.3K
Generating Electromagnetic Radiations01:10

Generating Electromagnetic Radiations

8.7K
The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in...
8.7K
Propagation Speed of Electromagnetic Waves01:30

Propagation Speed of Electromagnetic Waves

3.1K
Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
3.1K
Momentum And Radiation Pressure01:20

Momentum And Radiation Pressure

1.8K
An object absorbing an electromagnetic wave would experience a force in the direction of propagation of the wave. This force occurs because electromagnetic waves contain and transport momentum. The force accounts for the wave's radiation pressure exerted on the object. Maxwell's prediction was confirmed in 1903 by Nichols and Hull by precisely measuring radiation pressures with a torsion balance. The measuring instrument had mirrors suspended from a fiber kept inside a glass container.
1.8K
Mesh Analysis for AC Circuits01:12

Mesh Analysis for AC Circuits

819
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...
819
Bewley Lattice Diagram01:12

Bewley Lattice Diagram

1.6K
The Bewley lattice diagram, developed by L. V. Bewley, effectively organizes the reflections occurring during transmission-line transients. It visually represents how voltage waves propagate and reflect within a transmission line, making it easier to understand the complex interactions that occur.
1.6K

You might also read

Related Articles

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

Sort by
Same author

Circular array based on the tangent line method.

The Journal of the Acoustical Society of America·2025
Same author

Microphone array based on tangent line method.

The Journal of the Acoustical Society of America·2024
Same author

Sound delivery to listening point using tangent line method.

JASA express letters·2023
See all related articles

Related Experiment Video

Updated: May 5, 2026

Easy and Accurate Mechano-profiling on Micropost Arrays
10:25

Easy and Accurate Mechano-profiling on Micropost Arrays

Published on: November 17, 2015

11.1K

Radiation mode-based microphone array: Experimental verification.

Yudai Utsuki1, Tsutomu Kaizuka1

  • 1Department of Mechanical Science and Engineering, Kogakuin University, 2665-1 Nakano-machi, Hachioji-shi, Tokyo 192-0015, Japanyudai01npsh@gmail.com, tkaizuka@cc.kogakuin.ac.jp.

JASA Express Letters
|August 20, 2024
PubMed
Summary

Near-field enhancement using radiation mode-based microphone arrays effectively suppresses noise in speech communication devices. This study experimentally validates the method, showing its advantages over traditional gradient microphones.

More Related Videos

Characterization of Anisotropic Leaky Mode Modulators for Holovideo
09:36

Characterization of Anisotropic Leaky Mode Modulators for Holovideo

Published on: March 19, 2016

7.9K
Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
15:25

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Published on: February 4, 2018

6.1K

Related Experiment Videos

Last Updated: May 5, 2026

Easy and Accurate Mechano-profiling on Micropost Arrays
10:25

Easy and Accurate Mechano-profiling on Micropost Arrays

Published on: November 17, 2015

11.1K
Characterization of Anisotropic Leaky Mode Modulators for Holovideo
09:36

Characterization of Anisotropic Leaky Mode Modulators for Holovideo

Published on: March 19, 2016

7.9K
Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
15:25

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Published on: February 4, 2018

6.1K

Area of Science:

  • Acoustics
  • Signal Processing
  • Speech Communication

Background:

  • Microphone arrays are crucial for noise suppression in speech devices like phones and headsets.
  • Noise sources are typically farther from microphones than the speaker's mouth, enabling near-field enhancement strategies.

Purpose of the Study:

  • To experimentally validate the methodology of radiation mode-based microphone arrays for noise suppression.
  • To clarify the differences and advantages of radiation mode-based microphone arrays compared to gradient microphones.

Main Methods:

  • Experimental validation of radiation mode-based microphone array methodology.
  • Comparison of beampatterns between radiation mode-based microphone arrays and gradient microphones.

Main Results:

  • Experimental validation confirms the effectiveness of radiation mode-based microphone arrays.
  • Beampattern analysis demonstrates the advantages of radiation mode-based microphone arrays over gradient microphones.

Conclusions:

  • Radiation mode-based microphone arrays offer a promising approach for noise suppression in speech communication.
  • The study experimentally validates the superiority of this method over traditional gradient microphones.