Output details

An experimental comparison of the focused beamformer and the inverse method for the characterisation of acoustic sources in ideal and non-ideal acoustic environments

Significance of output:

By demonstrating that the inverse method can overcome some of the limitations inherent in the interpretation of the output from acoustic beamformers, and that both of these methods can be extended for use under reverberant conditions, this paper can improve the likelihood of the successful application of array techniques to a wider range of industrial applications. As a direct consequence of this work, Rolls-Royce are using the techniques described in this paper to measure the noise radiated from aero engines installed in indoor test beds, with an estimated cost saving of $5m (Dr Andrew Kempton, Chief Noise Specialist, Rolls-Royce, Derby).