Acoustic camera footage of frogs singing (VIDEO) Dartmouth College This video is under embargo. Please login to access this video. Caption Researchers used an “acoustic camera” to separate individual frog songs from their choruses. In this video, heat maps showing the location and audio frequency of each song were overlayed onto images of the breeding pond. Credit Video by Dartmouth College/Calsbeek Lab. Usage Restrictions Only for use in stories related to the present research. Must credit: Video by Calsbeek Lab/Dartmouth College. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.