Click anywhere on this page to activate the sound player, then hover your mouse courser over the rows of cells below to play a seawave sound texture which has been morphed to changes along different prinicipal component dimensions. You can select morphs which are plus or minus either one or two standard deviations distant from the original sound, along each of the feature types "Marginal distributions", "Cochlear correlations" or "Modulation Power".
Marginals PC 1
The first principal component of the marginal features ranks sounds from "less sparse" to "more sparse (intermittent)".
Marginals PC 2
The second principal component of marginal features ranks sounds from "more continuous" to "more bursty".
Cochlear (Frequency Band Envelope) Correlations PC 1
The first principal component of cochlear correlations ranks sounds from less to more correlated across all frequency bands. More correlated sounds tend to sound more "scratchy" as broadband transients introduce cross-frequency band correlations.
Cochlear (Frequency Band Envelope) Correlations PC 2
The second principal component of cochlear correlations ranks sounds from more correlated in the lower frequencies to more corralted in the upper frequencies. This is a rather subtle effect that is more difficult to hear.
Modulation Power PC 1
The first principal component of modulation power ranks sounds from "more slowly modulated" to "more rapidly modulated".
Modulation Power PC 2
The second principal component of modulation power ranks sounds from less to more modulation at intermediate modulation frequencies near around 40 Hz.