Deep learning in PAMGuard

Southern right whale picture by Brian Skerry The continued increase in the storage capacity and battery life of acoustic recorders is allowing industry and academia to collect passive acoustic monitoring (PAM) data over ever larger spatial and temporal scales. With this glut of new data comes a problem – what do we do with all […]

First Post. Making a LTSA in PAMGuard

An LTSA (long term spectral average) is essentially a spectrogram which shows particularly long time periods, e.g. hours, days or even months. They’re great for summarising passive acoustic studies, were acoustic data may have been collected over extended periods of time. This post is going to describe how to use PAMGuard ( , an open source tool kit for analysis to generate an LTSA. We’ll then import it into MATLAB and create a publishable figure.