P The invention relates to an acoustic chamber (1) extended spatial diffusion, which enclosure comprises at least two acoustic transducers which, each having a preferred axis (2A) of acoustic emission, are oriented such that these Preferred transmission axes are themselves oriented in different directions (D1 to D4), in particular divergent when they are observed in projection in a sector (S) angular orientation defined in space. BR/ It is characterized in that the different transducers are arranged in a longitudinal axis column (10A) approximately orthogonal to said angular sector (S), and this, so that their points (7) called "base of point source "are arranged on a line (L), called base, which extends in a plane (P) substantially median and perpendicular to that of the angled sector (S) considered. / P
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