Statements (18)
| Predicate | Object | 
|---|---|
| gptkbp:instanceOf | gptkb:Acoustic_phenomenon | 
| gptkbp:causedBy | sound waves reflecting off surfaces | 
| gptkbp:commonIn | mountains canyons large empty buildings | 
| gptkbp:definedIn | reflection of sound that arrives at the listener with a delay after the direct sound | 
| gptkbp:measures | time delay between original and reflected sound | 
| gptkbp:minimumDelayForPerception | about 50 to 100 milliseconds | 
| gptkbp:relatedTo | reverberation | 
| gptkbp:studiedIn | acoustics | 
| gptkbp:symbolizes | reflection repetition | 
| gptkbp:usedIn | gptkb:sonar ultrasound imaging echolocation | 
| gptkbp:bfsParent | gptkb:ECH | 
| gptkbp:bfsLayer | 8 | 
| https://www.w3.org/2000/01/rdf-schema#label | Echo (sound) |