Complex sounds allow envelope time-difference coding at high frequencies

Evidence

Although Yost measured the JND for IPDs to be difficult to detect at high frequencies, we must consider that Yost measured this for pure tones. If complex stimuli are used, and ITDs are imposed upon the stimulus envelope, then the ear is capable of using interaural time differences present in the envelope (e.g., Bernstein & Trahiotis, 2010; Henning, 1980). — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 1524

Categorization

• XREF: Reconciles the 1000-Hz phase limit with the fact that we localize real high-frequency sounds; a key bridge between binaural theory and everyday perception.
• QUESTION: How does envelope ITD coding interact with hearing-impaired listeners’ reduced temporal fine structure? This bears directly on the book’s stated normal-versus-impaired theme.