false-colour spectrogram

https://glossary.acousti.cloud/false-colour_spectrogram

Acronym: FCS

"A spectrogram-like image produced by combining three acoustic indices which are mapped using red, green and blue channels. It enables soundscapes to be rapidly visualised across a range of temporal scales [1]." (from the Acoustic Index User's Guide)

Reference: [1] Towsey M, Zhang L, Cottman-Fields M, Wimmer J, Zhang J, Roe P. Visualization of Long-duration Acoustic Recordings of the Environment. Procedia Computer Science. 2014;29:703-712. Available at: https://doi.org/10.1016/j.procs.2014.05.063.; Bradfer-Lawrence et al. (2023), Methods in Ecology and Evolution, glossary of key ecoacoustic terms. https://doi.org/10.1111/2041-210X.14194