BSS Locate

A toolbox for source localization in stereo convolutive audio mixtures

by C. Blandin, E. Vincent and A. Ozerov

Purpose

BSS Locate is a Matlab toolbox to estimate the Time Differences of Arrival (TDOAs) of multiple sources in a stereo audio signal recorded by a pair of omnidirectional microphones. The number of sources and the distance between the two microphones are assumed to be known but are not restricted to a given range.

BSS Locate implements 12 different source localization methods:

8 methods based on the detection of the peaks of an angular spectrum (GCC-PHAT, GCC-NONLIN, MUSIC and several SNR-based spectra)
4 methods based on clustering of the time-frequency bins

GCC-NONLIN provides the best results over a wide range of configurations.

Download

version 2 full for Matlab (392 MB) (includes example audio data and mixing filters)
version 2 basic for Matlab (11 KB) (without example data)
version 1 for Matlab (16 KB) (deprecated)

Reference

C. Blandin, A. Ozerov and E. Vincent Multi-source TDOA estimation in reverberant audio using angular spectra and clustering, Signal Processing 92, pp. 1950-1960, 2012.