Final answer:
The human hearing response is conditional on frequency, duration, and loudness.
Step-by-step explanation:
The three characteristics that the human hearing response is conditional on are frequency, duration, and loudness.
Frequency refers to the number of waves per unit of time and affects the pitch or perceived highness or lowness of a sound. Duration refers to the length of time a sound is present, and loudness is determined by the amplitude of the sound wave and the sensitivity of the ear.
For example, a high-frequency sound with a long duration and a high amplitude would be perceived as loud, while a low-frequency sound with a short duration and a low amplitude would be perceived as quiet.