Growl
Drone.
The sound made by a bee is commonly known, onomatopoeically in English, as a buzz.
The change in tone is due to Doppler effect, but the "sound" itself has no name.
I think electomagnetic waves...
The name given to movies with sound during the 1920s was "talkies".
There is no special name given for the father of a koala bear. There is also not special name given to the mother of the koala bear. The baby koala is called a joey.
what is the name given to the reflected sound waves in a cave or an empty hall
Republic of California
mystery
roar
ben...
"Newsreels"