Several studies have found that the duration of frication is the primary cue for fricative and affricate identification (Howell et al.,1983; Kluender and Walsh 1992; Mitani et al., 2006; Amano et al., 2011, Yasu et al. 2013). When the duration of frication ($C$) is longer, identification shifts to fricatives from affricates.
When preceded by a vowel $V_{1}$, the interval of silence ($SI$) between $V_{1}$ and a fricative become a cue for identification (Yasu et al., 2013; Repp, 1978; Dorman et al., 1980; Goldon-Salant et al.,2006).
Longer $SI$ tends toward the perception of an affricate.
In this demonstration, $SI$ between $V_{1}$ and $C$ was set to the range of 0-100 ms in 10 ms steps (11 steps). The length of $C$ is fixed to 180 ms
| SI (ms) | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sound |
| SI (ms) | V1 only | CV2 only |
|---|---|---|
| Sound |
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