Table IV.

Correlations between acoustic parameters and the coordinates of 16 stimuli for each dimension in the CI 3D and 2D timbre space.

Three-dimensional (3D) space
Acoustic parameters	Dim 1	Dim 2	Dim 3
Log-attack time	0.88††	0.15	0.09
Spectral centroid	0.17	0.50	0.49
Spectral spread	0.47	−0.33	0.41
Spectral flux	0.02	−0.07	−0.23
Spectral irregularity	−0.20	0.49	−0.07

Two-dimensional (2D) space
Acoustic parameters	Dim 1	Dim 2
Log-attack time	0.88††	−0.18
Spectral centroid	0.18	0.62**
Spectral spread	0.48	0.14
Spectral flux	0.02	0.16
Spectral irregularity	−0.19	−0.47

Significant correlations are bolded in this table

^**p ≤ 0.01,

^†p ≤ 0.005,

^††p ≤ 0.001