This repository contains R and MATLAB codes to compute birdsong complexity using Note Variability Index (NVI) as defined in Sawant, S., Arvind, C., Joshi, V., Robin, V. V. (2021)- Spectrogram cross-correlation can be used to measure the complexity of bird vocalizations. BioRxiv. https://doi.org/10.1101/2021.03.30.437665-
