Abstract
For the purpose of offering technical aspects of speech in school teachers, the sound pressure level and speed of speech during their Japanese lessons were measured. Results were as follows: 1) The sound pressure level ranged from 74 to 90 dB SPL and there was no significant difference among the teachers in each grade or between male and female teachers. 2) Teachers in higher grade classes tended to speak fasted than teachers in lower grades. However, analysis of rate on duration of phrase and pause showed that teachers in high grade classes took less frequent pause, and therefore, no difference in rate on duration of phrases between teachers in higher and lower grade classes was noticed. The rate of duration of phrases was about 8 mora/sec.
