👉 Echoes are a type of sound that occurs when two or more waves overlap and interfere with each other. In other words, they represent the interference between two sounds or audio frequencies. For example, if you play an instrument with different strings (e.g., violin) and then hear the same note played by another string (e.g., viola), you will hear a "echo" of that sound. This is because the vibrations from the strings interfere with each other, creating a continuous wave of
