what is echoes
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- noun, plural echoes. 1. a repetition of sound produced by the reflection of sound waves from a wall, mountain, or other obstructing surface. 2. a sound heard again near its source after being reflected. 3. any repetition or close imitation, as of the ideas or opinions of another.
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- An overtone is a natural resonance or vibration frequency of a system. Systems described by overtones are often sound systems, for example, blown pipes or plucked strings. If …such a system is excited, a number of sound frequencies may be produced, including a fundamental tone of given frequency.
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Echo (computing) 1 In Unix and POSIX-compatible systems, local echo is a flag in the POSIX terminal interface, settable programmatically with the tcsetattr() function. 2  The echoing is performed by the operating system's terminal device (in some way that is not specified by the POSIX standard).
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What is an echocardiogram? 1 Echocardiography (echo) is a painless test that uses sound waves to create pictures of your heart. 2  This test gives your doctor information about the size and shape of your heart and how well your heart's chambers and valves are working. Echocardiography (echo) is a painless test that uses sound waves to create pictures of your heart. 2  This test gives your doctor information about the size and shape of your heart and how well your heart's chambers and valves are working.
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Fire Emblem Echoes: Shadows of Valentia See also: Archanea Series. Echoes is a retelling of Fire Emblem Gaiden, which takes place in the continent of Valentia. Within the Fire Emblem universe, it takes place in the same world as Fire Emblem: Shadow Dragon and Fire Emblem: Mystery of the Emblem, but the story takes place between the two.
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echo 1 (of a sound or sound waves, intransitive) To reflect off of a surface and return. ( 2 by extension) To repeat back precisely what another has just said: to copy in the imitation of a natural echo. ( 3 by extension) To repeat (another's speech, opinion, etc.).
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- An echocardiogram (also called an echo) is a type of ultrasound test that uses high-pitched sound waves that are sent through a device called a transducer.The device picks up echoes of the sound waves as they bounce off the different parts of your heart.ransthoracic echocardiogram (TTE). This test is done to: 1  Look for the cause of abnormal heart sounds (murmurs or clicks), an enlarged heart, unexplained chest pain or pressure, shortness of breath, or irregular heartbeats. 2  Check the thickness and movement of the heart wall.
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Laws of Reflection Nowadays, it is more normal to use diffusers to disperse the reflection causing the echo. Echoes are used in Sonar and Radar. Both systems send out waves (sound waves in water and electromagnetic waves in air, respectively) and record the time it takes for the reflections to arrive back.
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Echocardiogram - Echo An echocardiogram (echo) is a test that uses high frequency sound waves (ultrasound) to make pictures of your heart.The test is also called echocardiography or diagnostic cardiac ultrasound. Quick facts.1  An echo uses sound waves to create pictures of your heart’s chambers, valves, walls and the blood vessels (aorta, arteries, veins) attached to your heart. 2  A probe called a transducer is passed over your chest. The probe produces sound waves that bounce off your heart and “echo” back to the probe. 2  These waves are changed into pictures viewed on a video monitor. 3  An echo can’t harm you. 4  The size and shape of your heart, and the size, thickness and movement of your heart’s walls. 5  How your heart moves.
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Overview of Echocardiogram Overview of Echocardiogram. An echocardiogram (echo for short) is a cardiac ultrasound. In cardiac care, ultrasound helps assess the condition of your heart. It uses a device called a transducer to transmit high-frequency sound waves through the body.
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Echocardiogram - Echo An echocardiogram (echo) is a test that uses high frequency sound waves (ultrasound) to make pictures of your heart. The test is also called echocardiography or diagnostic cardiac ultrasound. Quick facts. 1  An echo uses sound waves to create pictures of your heart’s chambers, valves, walls and the blood vessels (aorta, arteries, veins) attached to your heart. 2  A probe called a transducer is passed over your chest.
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Echoes Sentence Examples Many tales are but weak echoes of the sagas; many were family legends, many are old fairy tales in a garb suited to their new northern home; but, besides all these, there are a number of traditions and superstitions of indigenous origin.
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Echocardiography Echocardiogram, often referred to as a cardiac echo or simply an echo, is a sonogram of the heart. (It is not abbreviated as ECG, an abbreviation for an electrocardiogram .) Echocardiography uses standard two-dimensional, three-dimensional, and Doppler ultrasound to create images of the heart.ot only can an echocardiogram create ultrasound images of heart structures, but it can also produce accurate assessment of the blood flowing through the heart by Doppler echocardiography, using pulsed or continuous wave Doppler ultrasound.
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- The modern definition of echo is the repetition of sound produced by the reflection of sound waves from a wall, mountain, or other obstructing surface.
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Echo In audio signal processing and acoustics, echo is a reflection of sound that arrives at the listener with a delay after the direct sound. The delay is proportional to the distance of the reflecting surface from the source and the listener. Typical examples are the echo produced by the bottom of a well, by a building, or by the walls of an enclosed room and an empty room. A true echo is a single reflection of the sound source.
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- Sonography is a non-invasive medical procedure that uses the echoes of high-frequency sound waves (ultrasound) to construct an image (sonogram) of internal organs or body structures. In sonography, a transmitting device (the transducer) sends out high-frequency ultrasound waves. Harmless sound waves, which contain no radiation, bounce off the surfaces of the object they hit. The reflected sound forms an echo which is visualized on the screen.
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Echocardiogram Echocardiography (EK-o-kar-de-OG-rah-fee), or echo, is a painless test that uses sound waves to create moving pictures of your heart. The pictures show the size and shape of your heart. They also show how well your heart's chambers and valves are working. Echo also can pinpoint areas of heart muscle that aren't contracting well because of poor blood flow or injury from a previous heart attack.
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- Ultrasound Definition. Ultrasound is cyclic mechanical vibration with a frequency greater than the upper limit of human hearing, which is approximately 25 kilohertz (25,000 hertz) in healthy, young adults. A vibration source in a mechanical medium will cause wave propagation. Ultrasound is a mechanical wave, cannot exist in vacuum.
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- An echocardiogram (echo) is a test that uses high frequency sound waves (ultrasound) to make pictures of your heart.The test is also called echocardiography or diagnostic cardiac ultrasound. Quick facts.1  An echo uses sound waves to create pictures of your heart’s chambers, valves, walls and the blood vessels (aorta, arteries, veins) attached to your heart. 2  A probe called a transducer is passed over your chest.uick facts. 1  An echo uses sound waves to create pictures of your heart’s chambers, valves, walls and the blood vessels (aorta, arteries, veins) attached to your heart. 2  A probe called a transducer is passed over your chest.
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Physics of ultrasound Ultrasound is a high frequency sound, exceeding the upper limit of human hearing – 20.000 cycles per second (20 KHz). Knowledge of basic ultrasound physics is essential for understanding image formation, echo machine settings optimization, advantages and limitations of the technique.
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- If you shout hello, the sound may bounce back at you from a large object. You then hear your own voice coming back. Your returning voice is called an echo. Radar and sonar are electronic devices that use the principle of an echo to detect and locate objects. Both radar and sonar locate objects from the echo of a signal that is bounced off the object. Radar uses radio waves, which are a type of electromagnetic energy. Sonar uses the echo principle by sending out sound waves underwater or through the human body to locate objects. Sound waves are a type of acoustic energy. Because of the different type of energy used in radar and sonar, each has its own applications.
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200 Million People Use Illicit Drugs, Study Finds Using a review of published studies, Australian researchers estimated that as many as 203 million people use marijuana, 56 million people use amphetamines including meth, 21 million people use cocaine and 21 million people use opioids like heroin. The use of all four drug classes was highest in developed countries.
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echo Definition of echo. plural. echoes. also. echos. 1a : the repetition of a sound caused by reflection of sound wavesb : the sound due to such reflection. 2a : a repetition or imitation of another : reflectionb : repercussion, resultc : trace, vestiged : response. 3 : one who closely imitates or repeats another's words, ideas, or acts.
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- Introduced in Metroid Prime 2: Echoes. Ing were born when a phazon meteor struck the planet Aether with such force that a dimensional rift created a dark version of the world (Dark Aether). This warring race seeked to destroy the light world and its peaceful sentients, the Luminoth.
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reverberation A reverberation is an echoing sound. When you bang on a big piece of metal, you can hear the reverberation even after you stop banging. The repeating, often low, booming sound that follows the strum of an electric guitar or the thump of a drumstick on a cymbal is called reverberation. It's frequently described as sound that lingers beyond the original noise.
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- (RE zuh nay tur) is a hollow chamber filled with air that amplifies sound when the air inside of it vibrates. Music. Copyright © McGraw-Hill Education. In string instruments, sound is produced by plucking, striking, or drawing a bow across tightly stretched strings.