In a world where sound waves are visible as ripples in the air, much like the waves seen on a pond when a pebble is thrown, Rajesh is sitting on a park bench reading a book. Sachi is standing at a distance on Rajesh's left side near a pond, and she decides to shout Rajesh's name to get his attention. At the same moment, a fish leaps out of the water directly in line with Sachi and Rajesh, creating a splash which also sends ripples through the air. Given that Rajesh is wearing sunglasses that filter out the visual aspect of water ripples but not of sound ripples, what does Rajesh see and does he realize that Sachi is calling him? Provide a brief response.
As Rajesh is sitting on the bench with his visual soundwave-filtering sunglasses, he is unable to see the ripples in the air created by the fish splashing in the pond. However, these sunglasses do allow sound waves to be visible. Since Sachi is shouting Rajesh's name, the air ripples generated by her shout travel towards Rajesh. Although the splash created by the fish and Sachi's shout happen simultaneously, and the ripples from both actions propagate through the air at the same time, Rajesh's sunglasses cause him to only see the ripples made by Sachi's voice. The ripples of sound would manifest themselves as concentric circles or waves emanating from the source -- Sachi -- and moving toward Rajesh.

As a result, Rajesh sees airborne ripples heading in his direction originating from Sachi's position on his left side. These waves stand out against the unrippled air, untouched by the visual noise of the fish's splash. The spatial pattern and direction of these ripples would allow Rajesh to infer that Sachi is calling out to him, since he can see the sound waves of her shout and he knows that such waves would directly correspond to the source of the sound. Hence, Rajesh will realize that Sachi is attempting to gain his attention, despite the simultaneous distraction of the fish, which remains invisible to him due to his specialized sunglasses.