Continuously repeating echoes in a room are known as reverberation.
Where the echo is distinct, it is just an echo
Reverberations.
its reverberation
Repeated echoes are called reverberations. They occur when sound waves reflect off surfaces multiple times, creating a persistence of sound in a space.
This is probably Echo.
Call and response is where either an instrument plays a melody and the singer echoes it or vice versa.
Ostinato
Talent.
1
Off the cuff?
The Echoes was created in 1959.
We say they repeated that word
The plural form is echoes. The plural possessive is echoes'.