Animals besides humans can solve the cocktail party problem.

Evidence

When in the environment there are many sounds, people often are able to select speech of interest from the so-called cocktail party (Cherry 1953 and Pollack and Pickett 1958; see also Litovsky 2012). This ability to segregate speech from other masking sounds is not limited to humans: other nonhuman animals probably experience this capacity, although information on this point is scant. Sounds can be better distinguished when they are spaced (separate in space) than when they are co-localized. — Almo Farina, Soundscape Ecology, 1410

Categorization

• DEFINE: Introduces the cocktail party effect — segregating a signal of interest from a mask of many sounds — as a general perceptual phenomenon spanning humans and animals.
• CANDY: A grab-and-go bar fact: even nonhuman animals can pick one voice out of a loud room, like a human at a cocktail party.
• XREF: connects to: Receiver noise errors are of two connected types — Almo Farina, Soundscape Ecology: Principles,…, 548