What is echo sound?

Related questions

1. What causes reverberation?
2. What is echo of sound?
3. Why we Cannot hear echo in a small room?
4. Why do we hear an echo when we speak loudly among hills?
5. Can an echocardiogram detect clogged arteries?
6. How long does an echocardiogram take to perform?
7. What is loudness sound?
8. Why does an empty room echo?
9. What is the difference between delay and echo?
10. How is an echo formed?

Tags

1. #signal
2. #bottom
3. #delay
4. #typical
5. #listener
6. #processing
7. #produced
8. #examples
9. #acoustics
10. #building
11. #empty
12. #enclosed
13. #sound
14. #arrives
15. #after
16. #audio
17. #reflection
18. #direct
19. #walls