Patent ID: 8107321

Claim:
Method for localizing and tracking acoustic sources ( 101 ) in a multi-source environment, comprising the following steps: (a) recording of audio-signals ( 103 ) of at least one acoustic source ( 101 ) with at least two recording means ( 104 , 105 ), creating a two- or multi-channel recording signal; (b) partitioning said recording signal into frames of predefined length (N); (c) calculating for each frame a cross-correlation function as a function of discrete time-lag values (τ) for channel pairs ( 106 , 107 ) of the recording signal; (d) evaluating the cross-correlation function by calculating a sampling function depending on a pitch parameter (f 0 ) and at least one spatial parameter (φ 0 ), the sampling function assigning a value to every point of a multidimensional space being spanned by the pitch-parameter and the spatial parameters, said sampling function being obtained by collecting values of the cross-correlation function for a set of discrete time-lag values determined for each point in the multidimensional space; (e) identifying peaks in said multidimensional space with respective acoustic sources in the multi-source environment.