We're in the process of adjusting our acoustic multilateration (passive localisation) from working on wolves, to working on gibbons. We've been helping FFI monitor the critically endangered cao vit gibbon (Nomascus nasutus) in Vietnam. You can follow our progress on Twitter
1/3 To track gibbons without attaching radio collars:
— Arik Kershenbaum #ZoologistsGuideToTheGalaxy (@arikkershenbaum) June 22, 2022
Listen to the "cao vit" calls - you can see and hear that the sound on channel 3 arrives a little later than on channel 2.
We measure the precise time differences (the crosses marked 1, 2, 3).
As sound travels at 330 m/s... pic.twitter.com/JCS7queSyS
23 June 2022 2:03pm
Awesome stuff!! Interested in what kind of recorders you are using and how are you sync'ing them for the TDOA?
Carly Batist