BANTER helps to distinguish dolphins

archive – Diving News

BANTER helps to distinguish dolphins

There are 40 species of dolphin in the world, and a problem for scientific researchers who try to track or count them using acoustic monitoring is that to human ears their speech patterns sound broadly similar.

This has long made it difficult to identify and distinguish individual species.

Now the US National Oceanic & Atmospheric Administration (NOAA) has developed a computer algorithm called BANTER to overcome that problem. This “compound acoustic classification method” takes into account for the first time data from all the different types of call that dolphins produce, including whistles, echo-location clicks and “burst pulses” (rapid-fire clicking).

It merges the different signals to produce what it says is a far more accurate way of classifying each species.

Led by NOAA bioacoustics expert Shannon Rankin, the research team has tested the system over four months off the USA’s west coast, covering some 1000 hours of dolphin recordings and more than 2 million individual signals.

Checking the results against visual evidence, correct classification scores for individual species ranged from 71% to 92%, which gave an overall correct classification score of 84% for all five species.

Representing a big improvement over traditional methods, this is expected to make it easier and more efficient to estimate population sizes using underwater microphones rather than cameras or human observation.

The scientists say that the approach can be upscaled and easily be adapted for use in studying other types of wildlife.

Divernet – The Biggest Online Resource for Scuba Divers



Get a weekly roundup of all Divernet news and articles 🤿

We don’t spam! Read our privacy policy for more info.

Leave a Reply

Your email address will not be published.

Related Divernet Posts

Diver Magazine Relaunch

Diver magazine needs YOU!

Are you still lamenting the demise of Diver magazine? Well now you can help resurrect an icon as we seek to bring back the magazine

manta ray and diver over reef in Komodo

Divers pitch into Komodo manta probe

Manta rays choose to stick around Indonesia’s Komodo National Park in unusually large numbers – and, according to a new diver-led study, this community could

female diver holding pair of Fourth Element Tech fins

Tech fins inspired by humpback whales

Whales provided the inspiration for optimising efficiency in Fourth Element’s latest fins, according to the Cornwall-based manufacturer. The “turbulence disruptors” on top of the blades

Last Breath portrait of Woody Harrelson

Woody dives into Last Breath remake

A new version of the British documentary-thriller that captured the imaginations of divers in 2019 is about to be previewed at the Cannes Film Festival.

Viagra tablet

Viagra and diving: Risk reduction

Awareness is everything in diving, and BOB COLE has advice for divers who, for whatever reason, take PDE5 inhibitors I recently met an old friend

Reefs of Raja Ampat

Reefs of Raja Ampat

Local Guide to Raja Ampat Reefs, #4 Neu Reef While Raja Ampat is home to an incredible number of dive sites, one area, in particular,

Follow Divernet on Social Media