Adverser, I started searching for those terms in Google and ended up in Wikipedia. I still find the discussion a bit more advanced Is there such a thing as audio for dummies or something like that?
I understand speed of sound, which is 344 m/s. 1Hz would therefore be 344 meters. 1KHz would be 344mm. 10kHz would be 34mm. From this there is a specific range that is audible to the human ear, right?
Secondly, what does the word "response" mean in acoustic terms? Is an echo a response?
These questions may bug you, so forgive me in advance