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单词 reverberation
释义

reverberation


re·ver·ber·a·tion

R0205100 (rĭ-vûr′bə-rā′shən)n.1. a. The act of reverberating.b. The condition of being reverberated.2. a. Something reverberated.b. An echolike force or effect; a repercussion: Reverberations from the stock market crash were still being felt months later.

re•ver•ber•a•tion

(rɪˌvɜr bəˈreɪ ʃən)

n. 1. a reechoed sound. 2. the fact of being reverberated or reflected. 3. something that is reverberated. 4. an act or instance of reverberating.
Thesaurus
Noun1.reverberation - the repetition of a sound resulting from reflection of the sound wavesreverberation - the repetition of a sound resulting from reflection of the sound waves; "she could hear echoes of her own footsteps"echo, sound reflection, replicationreflectivity, reflexion, reflection - the ability to reflect beams or raysre-echo - the echo of an echo
2.reverberation - a remote or indirect consequence of some action; "his declaration had unforeseen repercussions"; "reverberations of the market crash were felt years later"repercussionconsequence, effect, result, upshot, outcome, event, issue - a phenomenon that follows and is caused by some previous phenomenon; "the magnetic effect was greater when the rod was lengthwise"; "his decision had depressing consequences for business"; "he acted very wise after the event"

reverberation

noun1. (usually plural) consequence, result, effect, event, outcome, repercussion, end result, upshot The statement is likely to have strong reverberations.2. echo, ringing, resonance, resounding, vibration, re-echoing He heard the reverberation of the slammed door.

reverberation

nounRepetition of sound via reflection from a surface:echo, repercussion.
Translations
retumborisonanzaweerkaatsing

Reverberation


Reverberation

After sound has been produced in, or enters, an enclosed space, it is reflected repeatedly by the boundaries of the enclosure, even after the source ceases to emit sound. This prolongation of sound after the original source has stopped is called reverberation. A certain amount of reverberation adds a pleasing characteristic to the acoustical qualities of a room. However, excessive reverberation can ruin the acoustical properties of an otherwise well-designed room. A typical record representing the sound-pressure level at a given point in a room plotted against time, after a sound source has been turned off, is given in the decay curve shown in the illustration. The rate of sound decay is not uniform but fluctuates about an average slope. See Sound

Typical decay curve illustrating reverberationTypical decay curve illustrating reverberation

Reverberation

The buildup of sound within an architectural space, such as a room, as a result of repeated sound reflections at the surfaces of the room.

Reverberation

 

the process by which a sound in an enclosed space gradually decays after its source ceases to emit. The volume of air in the enclosure constitutes an oscillatory system with many natural frequencies. Each natural oscillation is characterized by a decay rate; the absorption of a sound during its reflection from the boundaries of an enclosure and during its propagation determine the decay rate of the sound. Consequently, the natural oscillations of various frequencies that are excited by the same source do not decay simultaneously.

Reverberation has an important effect on the audibility of speech and music in an enclosure because the listener perceives direct sound against a background of oscillations that have been previously excited in the volume of air; the spectra of these oscillations vary in time because of the gradual decay of the natural oscillations. Reverberation is all the more important when oscillations decay slowly. When the dimensions of a room are large compared with the wavelengths, the spectrum of natural oscillations can be regarded as continuous and reverberation can be represented as the result of both a direct sound and a series of delayed repetitions with decreasing amplitudes, which reflect from the boundary surfaces.

The duration of reverberation is characterized by reverberation time, during which the intensity of a sound decreases by a factor of 106 and the level decreases by 60 decibels. Reverberation time is a very important factor in determining the acoustics of a room. Reverberation time is longer when a room is larger, the time of a free sound path is longer, and there is less absorption by the boundary surfaces. Reverberation time is measured by recording a sound level as it decreases after the source of the sound has been cut off; the recording devices used for this purpose have a logarithmic scale. Reverberation time is calculated from the average slope of the recorded level graph.

Reverberation is also applied to the echoes produced in the ocean by the reflection and scattering of an original sound from the bottom (bottom reverberation), from the agitated surface (surface reverberation), or from a heterogeneous aqueous medium, fish, and other biological objects (volume reverberation).

REFERENCES

Beranek, L. Akuslicheskie izmereniia. Moscow, 1952. (Translated from English.)
Furduev, V. V. Akusticheskie osnovy veshchaniia. Moscow, 1960.

reverberation

[ri‚vər·bə′rā·shən] (acoustics) The prolongation of sound at a given point after direct reception from the source has ceased, due to such causes as reflections from bounding surfaces, scattering from inhomogeneities in a medium, and vibrations excited by the original sound.

reverberation

The persistence of sound in an enclosed space (such as a room or auditorium) after a source of sound has stopped.

reverberation


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.

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.
AcronymsSeeretrovirus

reverberation


Related to reverberation: Reverberation time, Reflection of sound
  • noun

Synonyms for reverberation

noun consequence

Synonyms

  • consequence
  • result
  • effect
  • event
  • outcome
  • repercussion
  • end result
  • upshot

noun echo

Synonyms

  • echo
  • ringing
  • resonance
  • resounding
  • vibration
  • re-echoing

Synonyms for reverberation

noun repetition of sound via reflection from a surface

Synonyms

  • echo
  • repercussion

Synonyms for reverberation

noun the repetition of a sound resulting from reflection of the sound waves

Synonyms

  • echo
  • sound reflection
  • replication

Related Words

  • reflectivity
  • reflexion
  • reflection
  • re-echo

noun a remote or indirect consequence of some action

Synonyms

  • repercussion

Related Words

  • consequence
  • effect
  • result
  • upshot
  • outcome
  • event
  • issue
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