Abstract: Embodiments generally relate to a method of determining a hearing threshold value for a subject. The method comprises receiving at least one first response signal relating to an aural stimulation experienced by the subject at a first intensity level; receiving at least one second response signal relating to an aural stimulation experienced by the subject at a second intensity level, wherein the second intensity level is below an expected hearing threshold for the subject; calculating at least one first value relating to the at least one first response signal; calculating a second value relating to the at least one second response signal; plotting the at least one first value against the first intensity level on a plot; calculating a regression curve that fits the plot; and determine the hearing threshold of the subject to be the intensity level that corresponds to the second value along the regression curve.