In a framework of acoustic comfort, an accurate localisation - in range and angles - of the sources transmitting noise to the dirver has been investigated. Such a localisation permits to reduce the predomiannt sources in priority, in a given frequency range. An experiment has been conducted on a real truck cabin with a single point of excitation. the mechanical excitation was achieved using a shaker, and frequency-modulated signals have bene used covering a very wide frequency. Two crossed line arrays of 112 microphones have been employed for reception. Standard wideband beamforming and beam steering have been used on both arryas. For each frequency, the 3D localisation of sources has been achieved. The major sources have been isolated using the Radon transform. A fine analysis was then performed in order to provide their spectral content, in addition to their 3D localisation.
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