The Science Behind Echoes: Why Empty Rooms Reverb & Furnished Ones Don't

• Empty rooms cause echoes because sound waves reflect off hard, unobstructed surfaces like walls, ceilings, and floors.
• Furniture, curtains, and carpets absorb sound waves, preventing them from reflecting and thus eliminating echoes in furnished rooms.
• For a clear echo, a minimum distance of 17.2 meters between the sound source and the reflecting surface is required.
• This distance is based on the human brain's need for 0.1 seconds to distinguish between two sounds and the speed of sound.
• Recording studios use foam pads to absorb sound and prevent echoes, ensuring clear audio recordings.