I have some recordings from an array of 5 ST300 stationary recorders, which recorded overnight during calm weather. Our recorders were set up in a square, with 25 m between each corner and one logger in the center, 2 m above the bottom in 10m deep water. We have 3 complete encounters of vocal activity, whistles and clicks, that were recorded on all 5 sound loggers. Our sampling rate was 96 kHz.
Are there methods to determine group size, or at least number of vocalizing animals, based on our set up?