A low-frequency spectral notch in pinna cues shifts upward with elevation angle

Evidence

2.1 Pinna Cues Three different cue-sets were used in the experiment, all artificially generated. The normally-sized pinna cues are designed to mimic key trends of recorded pinna cues found in literature (e.g., Shaw et al. 1997 ). Figure 1 illustrates the response of the normally-sized (N) pinna cue system to different incidence angles in the median saggital plane. Worth noticing is the low-frequency notch that moves upwards as the incidence angle moves away from 0° (0° = straight ahead, 90° = straight up). — Dijk, Pim van, Physiology, Psychoacoustics and…, 3062

Categorization

• DEFINE: Explains the pinna-notch mechanism for vertical sound localization: a moving low-frequency notch encodes elevation angle.
• corroborated: 2 independent passages support this claim — Dijk, Pim van, Physiology, Psychoacoustics and…, 3062
• XREF: connects to: Head and pinna scattering imprint direction-dependent spectral notches onto the ear signal. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 1451