Psychophysical functions map continuous physical sound scales onto varied perceptual scales.

Evidence

A psychophysical function, characterized by hi = f(s) in Figure 8.1, represents the relation between one or several properties of a sound event s and one or several properties of an auditory event hi. Psychophysical functions may be mappings from one continuous scale to another continuous scale (such as sound pressure level →perceived loudness), from a continuous scale to a discrete scale (say, sound pressure level →audible or inaudible), and so on. A specific type of psychophysical function called the psychometric function refers to the mapping from a continuous scale to a yes/no scale expressed as a probability function of the detection of a signal. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 854

Psychophysical functions may be mappings from one continuous scale to another continuous scale (such as sound pressure level →perceived loudness), from a continuous scale to a discrete scale (say, sound pressure level →audible or inaudible), and so on. A specific type of psychophysical function called the psychometric function refers to the mapping from a continuous scale to a yes/no scale expressed as a probability function of the detection of a signal. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 854

Categorization

• DEFINE: Defines psychophysical function and distinguishes the psychometric function as the yes/no probability variant; foundational for designing perception experiments.
• XREF: The psychometric function’s yes/no probability mapping connects to signal detection theory and threshold experiments. — connects to: Psychoacoustics quantifies physical sound signals into perceived auditory attributes — Almo Farina, Soundscape Ecology: Principles,…, 976
• corroborated: 2 independent passages support this claim — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 854