The Acoustic Index User's Guide: A practical manual for defining, generating and understanding current and future acoustic indices - Bradfer-Lawrence, T; Duthie, B; Abrahams, C; Adam, M; Barnett, RJ; Beeston, A; Darby, J; Dell, B; Gardner, N; Gasc, A; Heath, B; Howells, N; et al. (METHODS IN ECOLOGY AND EVOLUTION, 2024)