Abstract
The purpose of this paper is to examine what type of speech sample is appropriate when speaking fundamental frequency of children are measured. A survey of existing literature and the results of our own investigation suggest that: (1) the pitches of natural and spontaneous speech, vocalization of one's name, and counting numbers aloud, are almost equal. (2) the pitch of prose reading is higher than that of vocalization of one's name. (3) the pitch of vocalization of one's name gradually decreases with age. Considering these findings, we concluded that the vocalization of one's name may be the most appropriate speech sample with which speaking fundamental frequency of children are measured.
