Generalization of the Standard Beamforming Algorithm for Identifying Acoustic Sources Using Asynchronous Microphone Array Measurements

Abstrast The conventional beamforming algorithm has been generalized, making it possible to mutually take into account the data of sequential measurements by one microphone array placed in different positions with respect to the sound generation area. When it is impossible to directly use microphone arrays with the required geometry in a synchronous measurement system, the generalized algorithm makes it possible to substitute measurement with an array of complex configuration with a set of measurements using one microphone array sequentially placed in different positions. The modified method is verified and validated by numerical simulations, as well as by the results of experiments in TsAGI’s AC-2 anechoic chamber, where acoustic speakers were used as noise sources.