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

Ultrasonography01:17

Ultrasonography

Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
During an ultrasonography procedure, a handheld device called a...
Imaging Studies II: Ultrasonography01:24

Imaging Studies II: Ultrasonography

IntroductionUltrasonography, or renal ultrasound, is a noninvasive medical imaging technique that uses high-frequency sound waves to visualize the kidneys, ureters, bladder, and surrounding tissues.Indications for Urinary System UltrasonographyUrinary system ultrasonography is indicated in various clinical scenarios, such as:Kidney Stones (Urolithiasis): To detect and monitor the size and presence of kidney or urinary tract stones.Hydronephrosis: To assess the dilation of the renal pelvis and...
¹H NMR: Interpreting Distorted and Overlapping Signals01:02

¹H NMR: Interpreting Distorted and Overlapping Signals

Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are slanted or...

You might also read

Related Articles

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

Sort by
Same author

An acoustic filter based on layered structure.

Applied physics letters·2015
Same author

An efficient approach to computing third- order scattering of sound by sound with application to parametric arrays.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2014
Same author

Scaling issues in ferroelectric barium strontium titanate tunable planar capacitors.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2014
Same author

The impact of metallization thickness and geometry for X-band tunable microwave filters.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2009

Related Experiment Video

Updated: May 22, 2026

Three-Dimensional Ultrasonic Needle Tip Tracking with a Fiber-Optic Ultrasound Receiver
04:33

Three-Dimensional Ultrasonic Needle Tip Tracking with a Fiber-Optic Ultrasound Receiver

Published on: August 21, 2018

Third-order parametric array generated by distantly spaced primary ultrasonic tones.

Glenwood Garner1, Michael B Steer

  • 1Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC, USA. glenwood.garner@gmail.com

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|May 2, 2012
PubMed
Summary

This study introduces a novel parametric array using third-order nonlinear interaction, producing a more directional audio tone with lower side lobes than traditional methods. This advanced acoustic technology offers improved performance for sound generation applications.

More Related Videos

Cortical Bone Assessment Using Ultrasonic Guided Waves: A Reproducibility Study in a Healthy Population
09:02

Cortical Bone Assessment Using Ultrasonic Guided Waves: A Reproducibility Study in a Healthy Population

Published on: January 31, 2025

Universal Hand-held Three-dimensional Optoacoustic Imaging Probe for Deep Tissue Human Angiography and Functional Preclinical Studies in Real Time
09:56

Universal Hand-held Three-dimensional Optoacoustic Imaging Probe for Deep Tissue Human Angiography and Functional Preclinical Studies in Real Time

Published on: November 4, 2014

Related Experiment Videos

Last Updated: May 22, 2026

Three-Dimensional Ultrasonic Needle Tip Tracking with a Fiber-Optic Ultrasound Receiver
04:33

Three-Dimensional Ultrasonic Needle Tip Tracking with a Fiber-Optic Ultrasound Receiver

Published on: August 21, 2018

Cortical Bone Assessment Using Ultrasonic Guided Waves: A Reproducibility Study in a Healthy Population
09:02

Cortical Bone Assessment Using Ultrasonic Guided Waves: A Reproducibility Study in a Healthy Population

Published on: January 31, 2025

Universal Hand-held Three-dimensional Optoacoustic Imaging Probe for Deep Tissue Human Angiography and Functional Preclinical Studies in Real Time
09:56

Universal Hand-held Three-dimensional Optoacoustic Imaging Probe for Deep Tissue Human Angiography and Functional Preclinical Studies in Real Time

Published on: November 4, 2014

Area of Science:

  • Acoustics
  • Nonlinear Acoustics
  • Array Signal Processing

Background:

  • Traditional parametric arrays rely on second-order nonlinear interactions to generate audio difference tones from ultrasonic sources.
  • These arrays often exhibit limitations in directivity and side lobe levels, impacting performance in various applications.

Purpose of the Study:

  • To present a novel parametric array utilizing third-order nonlinear interaction for audio tone generation.
  • To investigate the directivity and side lobe characteristics of third-order intermodulation (IM3) tones compared to second-order difference tones.
  • To model third-order scattering phenomena using a cascaded second-order approach for N-element transducer arrays.

Main Methods:

  • Generating audio tones via third-order nonlinear interaction of distantly spaced ultrasonic frequencies (one being the harmonic of the other).
  • Comparing the directivity of 1-, 2-, and 4-kHz third-order lower intermodulation (IM3) tones with corresponding second-order difference tones.
  • Employing a cascaded second-order approach to model third-order scattering in N-element transducer arrays.

Main Results:

  • The third-order parametric array produced IM3 tones with demonstrably greater directivity and lower side lobe amplitude compared to second-order difference tones.
  • Measurements confirmed theoretical predictions, showing good agreement between modeled and measured directivity characteristics for both second-order and third-order acoustic fields.
  • The study successfully validated the performance benefits of third-order nonlinear interactions for parametric array applications.

Conclusions:

  • Third-order nonlinear interactions offer a superior method for generating parametric array signals with enhanced directivity and reduced side lobe levels.
  • The proposed acoustic array design and modeling approach provide a valuable advancement in nonlinear acoustics and signal processing.
  • This research paves the way for more efficient and precise acoustic systems utilizing advanced nonlinear phenomena.