Method and device for localizing sound sources placed within a sound environment comprising ambient noise

A method for localizing one or more sound sources of interest placed within a sound environment comprising ambient noise by estimating the directions of arrival (θ, φ) of said one or more sound sources of interest, comprising the steps of:

• obtaining, using an array of at least two microphones, environment audio signals corresponding to said one or more sources of interest and to the ambient noise emanating from said sound environment;
• calculating, using the environment audio signals, environment steered response powers (SRP (t, f, θ, φ) corresponding each to the power of said sound environment under particular reference conditions;
• obtaining, using said array of at least two microphones, noise audio signals corresponding to the ambient noise emanating from said sound environment under particular reference conditions;
• calculating, using said noise audio signals, noise steered response powers (SRPn (t, f, θ, φ) corresponding each to the power of said ambient noise for one orientation of the plurality of orientations;
• and
• estimating the direction of arrival of said sound source of interest by identifying, among said one or more orientations, a set of orientations using said source steered response power and said noise steered response power.