Multi-channel BSS Locate is a Matlab toolbox to estimate direction of arrival (expressed both in azimuth and elevation) of multiple sources in a multi-channel audio signal recorded by an array of microphones. This toolbox implements the previous 8 angular spectrum methods available in BSS Locate toolbox.
Matlab toolbox:
http://bass-db.gforge.inria.fr/bss_locate/#mbss_locate
Online version (no Matlab required):