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 Experiment Videos

Speckle reduction by energy time-frequency filtering.

M A G Izquierdo1, M G Hernández, J J Anaya

  • 1Departamento de Señales, Sistemas y Radiocomunicaciones, ETSI Telecomunicación, UPM, Ciudad Universitaria s/n, Arganda del Rey, Madrid 28040, Spain. izquierdo@gtsc.ssr.upm.es

Ultrasonics
|March 30, 2004
PubMed
Summary
This summary is machine-generated.

This study introduces a new time-frequency filtering technique to improve ultrasonic testing in scattering materials. The method enhances signal-to-noise ratio, making flaws more visible by filtering based on the instantaneous center frequency.

Related Experiment Videos

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

CABO-CHANCE study: A real-life world study of Cabotegravir plus Rilpivirine long-acting intramuscular in ART-experienced people with HIV.

International journal of antimicrobial agents·2026
Same author

Search for Signatures of Dark Matter Annihilation in the Galactic Center with HAWC.

Physical review letters·2026
Same author

Ultra-high-energy gamma-ray bubble around microquasar V4641 Sgr.

Nature·2024
Same author

Comparative study of emotional facial expression recognition among Prader-Willi syndrome subtypes.

Journal of intellectual disability research : JIDR·2024
Same author

Spinal gunshot wounds: A retrospective, multicenter, cohort study.

Revista espanola de cirugia ortopedica y traumatologia·2024
Same author

Correction: Impact of an enhanced screening program on the detection of non-AIDS neoplasias in patients with human immunodeficiency virus infection.

Trials·2023

Area of Science:

  • Materials Science
  • Non-Destructive Testing
  • Signal Processing

Background:

  • Structural noise significantly limits flaw detection in ultrasonic testing of scattering materials.
  • Enhancing the signal-to-noise ratio (SNR) is crucial for improving defect visibility.
  • Existing methods include low-band spectral filtering, which offers some improvement.

Purpose of the Study:

  • To present a novel time-frequency technique for ultrasonic signal processing.
  • To enhance the signal-to-noise ratio (SNR) for improved flaw detection.
  • To compare the proposed method against traditional non-time-frequency filtering.

Main Methods:

  • Utilizing block-processing autoregressive techniques to estimate the instantaneous center frequency of the traveling wave.
  • Designing a time-frequency filter specifically tuned to half the estimated instantaneous center frequency.
  • Conducting experimental validation and comparative analysis with existing filtering techniques.

Main Results:

  • The proposed time-frequency filtering method demonstrates excellent performance in SNR enhancement.
  • Experimental results show a significant improvement in defect visibility compared to non-time-frequency filtering.
  • The technique effectively addresses limitations imposed by structural noise in ultrasonic testing.

Conclusions:

  • The novel time-frequency technique offers a superior approach to SNR enhancement in ultrasonic testing.
  • This method provides a valuable tool for improving the reliability and accuracy of flaw detection in highly scattering materials.
  • The findings suggest a promising direction for advancing ultrasonic testing methodologies.