Jeffrey Eugenides said this quote

Discussing it later, many of us felt we suffered a mental dislocation at that moment, which only grew worse through the course of the remaining deaths. The prevailing symptom of this state was an inability to recall any sound. Truck doors slammed silently; Lux's mouth screamed silently; and the street, the creaking tree limbs, the streetlight clicking different colors, the electric buzz of the pedestrian crossing box - all these usually clamorous voices hushes, or had begun shrieking at a pitch too high for us to hear, though they sent chills up our spines. Sound returned only once Lux had gone. Televisions erupted with canned laughter. Fathers splashed, soaking aching backs.