Table 5.
Relationships among the covariation of the acoustic measures (Table 4), as revealed by rotated factor analysis (varimax with Kaiser normalization) using principal component analysis as the extraction method. Variables exhibiting minimal (<0.3) contribution are excluded below.
| Factor 1 | Factor 2 | Factor 3 | Factor 4 | |
|---|---|---|---|---|
| Fund. med. | .912 | |||
| Fund. min. | −.347 | .559 | .674 | |
| Fund. max. | .476 | −.380 | .580 | |
| BW med. | .832 | |||
| BW min. | −.314 | .874 | ||
| BW max. | .490 | −.605 | ||
| Var. med. | .927 | |||
| Var. min. | .339 | .637 | .543 | |
| Var. max. | .947 | |||
| Dur. med. | .416 | .784 | ||
| Dur. min. | .885 | |||
| Dur. max. | .835 | −.414 |
“Fund.” = fundamental frequency; “BW” = 50% bandwidth;“Var.” = variance, “Dur.” = duration.