reverberation

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Related to Reverberation time: optimum reverberation time

re·ver·ber·a·tion

(rē'ver-bĕr-ā'shŭn),
Multiple echoes or reflections; in ultrasonography, an artifactual image caused by delay of an echo that has been reflected back and forward again before returning to the transducer.

reverberation

/re·ver·ber·a·tion/ (-ver″bĕ-ra´shun) duration of neuronal activity well beyond an initial stimulus due to transmission of impulses along branches of nerves arranged in a circle, permitting positive feedback.

reverberation

[rivur′bərā′shən]
1 the phenomenon of multiple reflections within a closed system.
2 an artifact in ultrasound caused by multiple echoes from parallel tissue interfaces.

re·ver·ber·a·tion

(rē-vĕr'bĕr-ā'shŭn)
Multiple echoes or reflections; in ultrasonography, an artifactual image due to delay of an echo that has been reflected back and forward again before returning to the transducer.

reverberation

an artifact in ultrasound imaging resulting from the production of spurious echoes which are caused by reflections at the skin-transducer interface or by bone or gas. See also comet-tail.
References in periodicals archive ?
T] from rockfish of different species and sizes, future measurements should be made of individual fish in tank volumes appropriate to the size and the frequency range of the fish, insuring high signal-to-noise ratios and reverberation times.
Background noise level (BNL) and reverberation time (RT) measurements were taken in each unoccupied classroom.
With more than 30 hands-on activities, visitors can investigate harmonics, test reverberation time and find out about digital sampling.
Under the standard, the maximum reverberation time in an average-sized, unoccupied, furnished classroom is 0.
The theatre serves for music, musicals, opera and all kinds of popular entertainment, so different reverberation times are needed.
Here again there is an adjustable orchestra pit and proscenium, which can be varied in height and width, but the acoustic reverberation times are adjusted with an electronic system.
So it is a tall volume that has a melodious series of reverberation times, enhanced by the elegant undulations of the thin birch sound reflector over the orchestra.
As project designer Craig Webb points out, you need a large volume and a high ceiling for symphonies, and a lower ceiling and shorter reverberation times to preserve the clarity of speech.