Oscillations, Waves, and Interactions - GWDG

66 A. Kohlrausch and S. van de Par
Figure 21. The N0Sπ BMLDs as a function of masker bandwidth for 125 Hz (circles),
125-Hz transposed (squares), and 4 kHz (diamonds). Five panels show data for individual
subjects; the panel at the bottom right shows the average of the five subjects. In the bottom
right panel, the three symbols with error bars indicate the averaged standard deviation of
the mean BMLD for the individual subjects for the three conditions. In all other panels
the three symbols with error bars indicate the averaged standard deviation of repeated
measurements. Reused with permission from Ref. [52]. Copyright 1997, Acoustical Society
of America.
Esquissaud [56] that the properties of the binaural processor are quite similar at low
and high frequencies.
4.2.4 Later developments
The concept of transposed stimuli has been taken up in a wide range of hearing studies.
Bernstein and Trahiotis [57,58] used transposed stimuli to measure the extent of
laterality and the sensitivity to changes in interaural time differences, and compared
their results with those obtained for standard low- and high-frequency stimuli. In
line with the results found by van de Par and Kohlrausch [52], they observed great
similarity in their measures between low-frequency and transposed stimuli. Oxenham
et al. [59] used this type of stimuli in pitch perception experiments, in order to allow
a separation of place and timing information, which is usually coupled when using
sinusoidal signals.
Because the central assumption underlying the construction of transposed stimuli