Table S2. Summary of acoustic parameters used to calculate Acoustic Indices (AIs). ACI represents Acoustic Complexity Index, ADI Acoustic Diversity Index, BI Bioacoustic Index, and NDSI Normalised Difference Soundscape Index, where and denotes low and high l h frequency versions, respectively. Reference 1 represents Pieretti, Farina and Morri (2011); 2 Villanueva-Rivera (2011); 3 Boelman (2007); and 4 Kasten (2012). et al. et al. et al. Anthropogenic and biotic sound bins are indicated by and respectively. J ‘Anthro’ ‘Bio’ denotes the temporal step in seconds. dB denotes decibels. Shannon denotes the Shannon’s diversity index. Acoustic Spectrogram Bin min Bin max AI specific parameters Ref Index FFT window frequency frequency size (ms) (kHz) (kHz) ACIl 512 - 12 J = 5 1 ACIh 512 12 96 J = 1 1 ADIl 512 - 12 dB threshold = -50, 2 frequency step = 1kHz, Shannon = True ADIh 512 12 96 dB threshold = -15, 2 frequency step = 1kHz, Shannon = True BIl 512 2 8 - 3 NDSIl 512 Anthro = Anthro = - 4 1; Bio = 2 2; Bio = 8
Table S2. Summary of acoustic parameters used to calculate Acoustic Indices (AIs). ACI represents Acoustic Complexity Index, ADI Acoustic Diversity Index, BI Bioacoustic Index, and NDSI Normalised Difference Soundscape Index, where l and h denotes low and high frequency versions, respectively. Reference 1 represents Pieretti, Farina and Morri (2011); 2 Villanueva-Rivera et al. (2011); 3 Boelman et al. (2007); and 4 Kasten et al. (2012). Anthropogenic and biotic sound bins are indicated by ‘Anthro’ and ‘Bio’ respectively. J denotes the temporal step in seconds. dB denotes decibels. Shannon denotes the Shannon’s diversity index. Acoustic Index Spectrogram FFT window size (ms) Bin min frequency (kHz) Bin max frequency (kHz) AI specific parameters Ref ACIl 512 - 12 J = 5 1 ACIh 512 12 96 J = 1 1 ADIl 512 - 12 dB threshold = -50, frequency step = 1kHz, Shannon = True 2 ADIh 512 12 96 dB threshold = -15, frequency step = 1kHz, Shannon = True 2 BIl 512 2 8 - 3 NDSIl 512 Anthro = 1; Bio = 2 Anthro = 2; Bio = 8 - 4
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