First International Conference on Spoken Language Processing (ICSLP 90)

Kobe, Japan
November 18-22, 1990

Audition and Speech Perception in the Chimpanzee

Shozo Kojima

Primate Research Institute, Kyoto University, Aichi, Japan

The basic auditory functions and the perception of vowel-like vocal sounds (grunts) were studied in the chimpanzee. The chimpanzee showed a W-shaped auditory sensitivity function. The chimpanzee was more sensitive to 1-kHz and 8-kHz than 2-kHz and 4-kHz tones. It was found that the first formant was more important than the second formant for the perception of these vocal sounds. The chimpanzee did not vocalize vowel-like sounds [i] and [el. The relationship between the perception of grunts and the auditory sensitivity function and between the perception and the production of grunts of the chimpanzee was discussed.

Full Paper

Bibliographic reference.  Kojima, Shozo (1990): "Audition and speech perception in the chimpanzee", In ICSLP-1990, 749-752.