Female Frogs Are Pretty Much Tuning Out Male Frogs At This Point

"In a darkened room, Shen and his colleagues played prerecorded male calls to the females. When the females heard normal calls, they would hop towards the loudspeakers and sometimes chirp back. However, when the researchers played only the ultrasonic components of the male calls, it elicited no response from the females. Could the female frogs have simply been ignoring the high-pitch chirps?"