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A second formant transitions that originate at the d

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Unformatted text preview: 40 The same patterns, except that a silent interval of 50 msec has been introduced between the locus and the 1440 interval in the first formant, but that it has been displaced is start of the transition. Note that there g no silent 1320 1200 along the time scale so that its onset is, as in (A), simultaneous with that of the second formant. Similar 1080 adjustments in time of onset were made for all the silent intervals tested in this experiment. The intro960 ffect irst duction of a silent interval into the fd formant always weakened the consonant, but did not a840 its 720 identity. TIME IN SECONDS } } } 0 0.1 0.2 0.3 0 0.1 0.2 0.3 Time in Seconds --- ·---------------- -·---�--·--··--·-�-� F1 400 CPS Voice Onset Time (VOT) Illustrations of the patterns used to study the effects of the first-formant time of onset on the perceived distinction between /d/ and /t/. The numbers above the patterns show the extent of cutback in msec. foice onet 400U, Frequency in CPS aO z z Uo 4800 '. 10 o o20 10 2400- 20 II 2400 1~~~~~~~200-~~1 1200 0 . 0 3600 C, Cc' Il 0 (VODT tgie , -,% 0 0 100 o200 , . 00 400 - " 0 100 200 300 400 IN MSEC. 0 TIME 100 40 Time in msec. 30 30 1 40 260 0 0 100 100 200 200 0 so0 50 6 200 100 200 60 -~~~~~~AE 1600 26o00 6 tbo z6o 6 60o 6o Figure 8.4 Illustrations of the patterns used to study the effects of the first-formant time of onset on the perceived 0 100 200 0 100 200 0 100 200 0 100 200 distinction between /d/ and /t/. The numbers above the patterns show the extent of cutback in msec. 100 U, w z 0 80 .L Iz gC laJ Percent d Responses U, W 60 /d/ vs /t/ 40 20 0 FIRST-FORMANT 10TIME 20 ELAY IN MSEC. 50 D 0 30 40 60 Figure 8.5 First-Formant Time in which msec. Responses of 27 phonetically naive listeners to the patternsDelay intime of onset of the first formant was varied (see figure 8.4). Each listener judged each stimulus six times, making a total of 162 judgments per stimulus. The data are shown as the percentage of times each stimulus was heard as /d/. Responses of 27 phonetically naive listeners to the patterns in which time of onset of the first-formant was varied. Each listener judged each stimulus six times, making a total of 162 judgments per stimulus. The data are shown as the percentage...
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This document was uploaded on 03/19/2014 for the course EECS 6.541J at MIT.

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