Figure 4. Comparison of SNRs at masked thresholds outdoors and in the laboratory.

(P. podagrosus lab N = 5, outdoor N = 6; Diatrypa sp. lab N = 1, outdoor N = 5). Note the difference in SNRs in the real world situation and laboratory, although the masker M2 recorded at the site where outdoor experiments were performed was very similar spectrally and with respect to average intensity (55 dB SPL).