The result of extensive collaboration among leaders of the worldwide auditory research community, Auditory Signal Processing: Physiology, Psychoacoustics, and Models is a record of the papers presented at the XIIIth International Symposium on Hearing (ISH) Dourdan, France, August 24-29, 2003. The volume includes a total of 62 invited papers, organized into 12 broad thematic areas: cochlear signal processing; brainstem signal processing; pitch; frequency modulation; streaming; amplitude modulation; responses to complex sounds; speech; comodulation masking release; binaural hearing; temporal coding; and plasticity.