Auditory frequency is encoded by both place and temporal codes.

Evidence

In summary, auditory physiology provides two potential codes for representing the frequency and the fundamental frequency of a stimulus — the place and the temporal code. The place code is based on extracting stimulus frequencies from the place(s) of maximum basilar membrane vibration. The temporal code is based on the ability of the auditory nerve to phase lock as a representation of temporal patterns present in sounds. — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 1223

Categorization

• DEFINE: Concise summary definition of the two fundamental neural codes for frequency.