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Echo

Echo

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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Related Experiment Video

Updated: Jun 22, 2025

Echo Particle Image Velocimetry

Echo Particle Image Velocimetry

Published on: December 27, 2012

Serendipity in the Echo Lab

Vincent L Sorrell¹

¹University of Kentucky Gill Heart & Vascular Institute, Lexington, Kentucky.

CASE (Philadelphia, Pa.)

|July 1, 2024

Summary

No abstract available in PubMed .

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