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Related Concept Videos

Echo01:06

Echo

1.2K
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,...
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Ultrasonography01:17

Ultrasonography

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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...
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Related Experiment Video

Updated: Apr 23, 2026

Echo Particle Image Velocimetry
16:31

Echo Particle Image Velocimetry

Published on: December 27, 2012

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[A focused sound field measurement system by LabVIEW].

Zhan Jiang, Jingfeng Bai, Ying Yu

    Zhongguo Yi Liao Qi Xie Za Zhi = Chinese Journal of Medical Instrumentation
    |September 23, 2014
    PubMed
    Summary

    A new focused sound field measurement system significantly improves efficiency, reducing scanning time from 888 to 9.25 hours. This virtual instrument system enhances focused acoustics measurement accuracy and speed.

    Area of Science:

    • Acoustics
    • Virtual Instrumentation
    • Measurement Systems

    Context:

    • Focused sound field measurement requires efficient and accurate systems.
    • Existing methods can be time-consuming and lack adaptability.
    • The LabVIEW virtual instrument platform offers a flexible solution.

    Purpose:

    • To establish an automated focused sound field measurement system.
    • To improve the efficiency and accuracy of sound field scanning.
    • To adapt scanning paths based on focal region characteristics.

    Summary:

    • A LabVIEW-based system was developed for focused sound field measurement.
    • The system automatically locates the focus and optimizes scanning paths.
    • 3D scanning time decreased dramatically from 888 to 9.25 hours.

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    Related Experiment Videos

    Last Updated: Apr 23, 2026

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    Experiments on Ultrasonic Lubrication Using a Piezoelectrically-assisted Tribometer and Optical Profilometer
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    Impact:

    • Significantly enhanced efficiency in focused sound field measurements.
    • Demonstrated a reduction in measurement time by over 98%.
    • Quantified deviations between measured and theoretical results (focal plane width: 3.691%, beam axis length: 12.937%).