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Table 3

The factors values, investigated effects and p-values of ART-ANOVA 2 are listed. Significant effects and significant interactions (p < 0.05) are indicated by an asterisk. The factor level “low level (1)” of the factor ‘level of audio sound’ corresponds to the unpleasantness rating of the sinusoid at 1000 Hz at 20 dB SPL or of the broadband at 21 dB SPL. In addition, the factor value “medium level (2)” corresponds to the unpleasantness rating of the sinusoid at 1000 Hz at 50 dB SPL or of the broadband at 36 dB SPL, and the factor level “high level (3)” corresponds to the unpleasantness rating of the sinusoid at 1000 Hz at 70 dB SPL or of the broadband at 53 dB SPL.

ART-ANOVA 2
Factor 1: Type of audio sound Factor 2: Level of audio sound Factor 3: Level of infrasound
Broadband (1) Low level (1) No infrasound (1)
Sinusoid at 1000 Hz (2) Medium level (2) 80 dB SPL (2)
High level (3) 95 dB SPL (3)
110 dB SPL (4)
Investigated effects
p-value
Factor 1 p < 0.0001*
Factor 2 p < 0.0001*
Factor 3 p < 0.0001*
Factor 1:Factor 2 p = 0.0003*
Factor 1:Factor 3 p < 0.0001*
Factor 2:Factor 3 p < 0.0001*
Factor 1:Factor 2:Factor 3 p = 0.6933

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