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What is the actually meaning of attenuation according of ultra sound?
Wiki User
∙ 11y ago
Attenuation refer to the inter mixing of the waves having different frequencies and also known as noise.
Wiki User
∙ 11y ago
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Why does a noise sound fainter as you move away from its source?
Sound grows more faint as you move away from the source for two reasons: attenuation and diffusion. Sound energy attenuates as it passes through a medium, until eventually all the sound energy is lost to friction. So the further away you are from the source, the more the sound has attenuated before reaching you. . Diffusion occurs because the sound wave expands in all directions. Assuming no attenuation, the amount of acoustic energy striking any given surface area (your ear drum, for example) is inversely proportional to the square of the distance to the source, so as you move away from the sound, the amount of acoustic energy declines exponentially.
Why sound is heard louder but unclear in empty room?
In an empty room, the sound is mostly just bounced around. When more things are placed in the room, they provide more ability to absorb sound and reflect in different directions such that it actually has to take a longer path to get from one place to another (zig zag instead of straight path) with the consequent attenuation of the intensity of the sound. Mostly though it's the absorption of the sound by the stuff you fill the room with.If a room has things like soft chairs, sofas, beds, etc, they serve to absorb some of the sound waves.
What is the meaning of pleasant sound?
Pleasant sound can be any sound that doesn't harm or effect your ear drums.
What is the meaning of unpleasant sound?
not pleasant or agreeable
What is the meaning sonar?
sonar means '...of, or relating to sound'
What is sound attenuation expressed in?
Neper/meter
Which attenuate the sound pressure level?
Noise and Attenuation. Noise is usually defined as unwanted sound - noise, noise generation, silencers and attenuation in HVAC systems. Attenuation of Sound Waves: When sound travels through a medium, its intensity diminishes with distance. In idealized materials, sound pressure or signal amplitude is only reduced by the spreading of the wave. Natural materials, however, all produce an effect which further weakens the sound. This further weakening results from scattering and absorption. Scattering is the reflection of the sound in directions other than its original direction of propagation. Absorption is the conversion of the sound energy to other forms of energy. The combined effect of scattering and absorption is called attenuation. Ultrasonic attenuation is the decay rate of the wave as it propagates through material. A property of some thing or action which is essential and specific to that thing or action. Attenuation of sound within a material itself is often not of intrinsic interest. However, natural properties and loading conditions can be related to attenuation. Attenuation often serves as a measurement tool that leads to the formation of theories to explain physical or chemical phenomenon that decreases the ultrasonic intensity.
What is called when sound gets reduced by a solid obstruction?
"Muffling" or "Baffling". To be academic: "Attenuation".
What is meant by the terms acoustic impedance and attenuation?
Acoustic impedance is the measurement that indicates how much sound pressure the vibration of molecules at a given frequency is generated. Attenuation refers to the gradual loss in intensity through a medium, such as light and sound in water.
What are the disadvantage of ultrasonic wave communicaton?
Communication is at speed of sound. Signal attenuation. Noise of signal travelling through air.
What is the meaning of the song Wine Red by The Hush Sound?
i really dont know but it actually means to drink red red wine so point of that is the meaning of the song red wine by the hush sound thanks
What latin root does phone come from?
It actually comes from the Greek root 'phon-', meaning 'sound.' It isn't a Latin derivative.
What word does telephone come from?
Telephone is from the Greek tele meaning "far" and phone meaning "voice". There's Greek accents in the actual spelling, but I don't know how to do those on my laptop :-)
On msn what does the word MWAH mean?
its an expression, it doesn't really have a meaning It actually is like saying kisses... it is the sound made for a kiss
What is the relationship between morpheme and phoneme?
Morphemes are the smallest units of meaning in a language, while phonemes are the smallest units of sound that can change the meaning of a word. Morphemes combine to create words, while phonemes combine to create sounds that form words. Phonemes can be represented by letters in writing, while morphemes convey meaning within those written words.
Why does a noise sound fainter as you move away from its source?
Sound grows more faint as you move away from the source for two reasons: attenuation and diffusion. Sound energy attenuates as it passes through a medium, until eventually all the sound energy is lost to friction. So the further away you are from the source, the more the sound has attenuated before reaching you. . Diffusion occurs because the sound wave expands in all directions. Assuming no attenuation, the amount of acoustic energy striking any given surface area (your ear drum, for example) is inversely proportional to the square of the distance to the source, so as you move away from the sound, the amount of acoustic energy declines exponentially.
what does exaggerating meaning?
Something is exagerated when it is presented as more than it actually is.
