In audio signal processing and acoustics, echo is a reflection of sound that
arrives at the ... Acoustic waves are reflected by walls or other hard surfaces,
such as mountains and privacy fences. Th...
Echoes occur when a reflected sound wave reaches the ear more than 0.1
seconds after the original sound wave .... This is depicted in the diagram at the
If you have ever been inside of a large canyon, you have likely observed an echo
resulting from the reflection of sound waves off the canyon walls. Suppose you ...
Echoes are created by sound waves being reflected off of a large obstacle.
Conditions have to be just right for the echo to be heard as a separate sound....
Sound waves are longitudinal waves that must pass through a medium, such as
air. Echoes are reflections of sounds. The frequency of ultrasound is above 20 ...
Get a FREE sound waves lesson plan, or one of many other physical science
lesson ... Under the diagram, students should describe what is observed as they
... Elicit students' ideas about real-world examples of this—for example, echoes.
This lesson will explain what sound waves are, discuss features of sound ... We
can also use this diagram to measure the so-called wavelength of the wave.
May 14, 2007 ... Explanation of how obstacles affect sound waves by Ron Kurtus - Succeed in ...
When sound reflects off a smooth flat surface, an echo or ...
May 6, 2000 ... A condensation is part of a sound wave where the density is higher than .....
because one must be too close for the echo to be distinguished.
ultrasound echo from a transducer into the body. As the ultrasound ... Sound
waves can be described in terms of their frequency (measured in cycles per ....
Diagram (a) shows how sound beam refraction results in duplication artifact. (b)
is a ...