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échos francs

English translation: flutter echo

GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
French term or phrase:échos francs
English translation:flutter echo
Entered by: Wendy Streitparth

08:58 May 18, 2020
French to English translations [PRO]
Tech/Engineering - Architecture / Building acoustics
French term or phrase: échos francs
Les parois parallèles, qui peuvent engendrer, dans les petits espaces, des "échos flottants" (allers-retours multiples et perceptibles à l'oreille de réflexions sonores entre deux parois parallèles, si les réflexions ne sont pas déviées ou amorties par des éléments diffusants et absorbants) et des « échos francs », dans les volumes importants, (lorsque la différence des trajets entre son direct et son réfléchi est supérieure à environ 14 m, induisant un décalage temporel perceptible).
Mike Downey
United Kingdom
Local time: 01:37
flutter echo
Explanation:
Could it be this?

Flutter Echo. A condition that occurs in acoustic spaces when two parallel surfaces reflecting sound between one another are far enough apart that a listener hears the reflections between them as distinct echoes. The audible effect is in many cases a sort of “fluttering” sound as the echoes occur in rapid succession.

www.sweetwater.com › insync › flutter-echo
Selected response from:

Wendy Streitparth
Germany
Local time: 02:37
Grading comment
First validated answer (validated by peer agreement)
4 KudoZ points were awarded for this answer



Summary of answers provided
2 +3flutter echo
Wendy Streitparth
3 -1resounding echoes
Shelley Upton


Discussion entries: 2





  

Answers


1 hr   confidence: Answerer confidence 2/5Answerer confidence 2/5 peer agreement (net): +3
flutter echo


Explanation:
Could it be this?

Flutter Echo. A condition that occurs in acoustic spaces when two parallel surfaces reflecting sound between one another are far enough apart that a listener hears the reflections between them as distinct echoes. The audible effect is in many cases a sort of “fluttering” sound as the echoes occur in rapid succession.

www.sweetwater.com › insync › flutter-echo

Wendy Streitparth
Germany
Local time: 02:37
Native speaker of: English
PRO pts in category: 8
Grading comment
First validated answer (validated by peer agreement)

Peer comments on this answer (and responses from the answerer)
agree  philgoddard
1 hr
  -> Many thanks, Phil
agree  writeaway: convincing ref
2 hrs
  -> Many thanks, writeaway
agree  Tony M: Confirmed from my own experience in acoustics.
22 hrs
  -> Many thanks, Tony. Glad to have expert confirmation!
Login to enter a peer comment (or grade)

2 hrs   confidence: Answerer confidence 3/5Answerer confidence 3/5 peer agreement (net): -1
resounding echoes


Explanation:
A possible alternative to 'clear', since if they are not damped, they 'resound' or 're-sound'. OED has resounding as "Of a place: to ring or re-echo with sound."

Shelley Upton
United Kingdom
Local time: 01:37
Works in field
Native speaker of: Native in EnglishEnglish

Peer comments on this answer (and responses from the answerer)
neutral  philgoddard: Isn't this a tautology?
22 mins
  -> Possibly, but Tony M has the correct answer.
disagree  Tony M: Not the correct technical term for the phenomenon described.
20 hrs
  -> Thank you - a new term learned.
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