Abstract: A method of producing a spatialized stereo audio file from an original stereo audio file comprises creating a data base of impulse responses realized in at least one physical space divided into left, right, front, back, up and down sides relative to a sound acquisition position, with at least one pair of acquisition microphones placed at the sound acquisition position, with at least two pairs of source loudspeakers placed at sound source positions; the sound acquisition position is situated at the left-right median plane of the physical space, the sound source positions are distributed symmetrically by pairs relative to the sound acquisition position, the data base of impulse responses comprising at least one left/right impulse response pair, the left and right impulse responses being obtained by a deconvolution of the direct acquired signal from all the source loudspeakers distributed at the respective left and right side of the physical space.

Abstract: A method comprises multichannel processing of an input audio signal by a multichannel convolution with a predefined imprint, the imprint being formulated by the capture of a reference sound by a set of speakers disposed in a reference space. The method further comprises selecting at least one imprint from among a plurality of imprints previously formulated in different sound contexts.