Fig. 1.

‘Doily’ in ‘Say doily again’ produced by a control talker at a comfortable speaking rate and loudness. The interval initiated by the release of ‘d’ and terminated by the end of the downward F2 transition is identified as t1; the interval enclosing a rising transition during the diphthong /oI/ is identified as t2. F2 slope and F2 range were measured for each transition. Path distance and average speed functions associated with these intervals were measured as well.