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acoustic impedance |
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impedance /im·ped·ance/ (im-pēd´ans) obstruction or opposition to passage or flow, as of an electric current or other form of energy. Symbol Z . acoustic impedance an expression of the opposition to passage of sound waves, being the product of the density of a substance and the velocity of sound in it. aortic impedance the sum of the external factors that resist ventricular ejection. acoustic impedance, interference with the passage of sound waves by objects in the path of those waves. It equals the velocity of sound in a medium multiplied by the density of the medium. The acoustic impedance of bone may be nearly five times as great as that of blood. Testing middle ear acoustic impedance is part of audiologic evaluation batteries used to detect middle ear problems. impedance obstruction or opposition to passage or flow, as of an electric current or other form of energy. acoustic impedance an expression of the opposition to passage of sound waves, being the product of the density of a substance and the velocity of sound in it. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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