I wonder if it's comparable to using a magnifying glass, in the sense that it's the hottest only at one specific point, even though the rays are traveling throu

I wonder if it's comparable to using a magnifying glass, in the sense that it's the hottest only at one specific point, even though the rays are traveling through the medium (air) at all points. So maybe it's like a magnifying glass for sound and the cancer is the ant that gets fried?