Transaural synthesis method for sound spatialization

A method of producing a spatialized stereo audio file from an original stereo audio file, comprising:

• creating a data base of impulse responses, wherein creating said impulse response is realised in at least one physical space, said physical space is divided into left and right sides, front and back sides, 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 a plurality of sound source positions;
• wherein said sound acquisition position is situated at the left-right median plane of said physical space,
• said sound source positions are distributed symmetrically by pairs relative to said sound acquisition position,
• said data base of impulse responses comprising at least one impulse response pair of a left impulse response and a right impulse response,
• the left impulse response being obtained by a deconvolution of a direct acquired signal from left source loudspeakers including all the source loudspeakers distributed at the left side of the physical space, wherein the direct acquired signal from the left source loudspeakers is based at least on a source signal applied at the same time to all the left source loudspeakers;
• and
• the right impulse response being obtained by a deconvolution of the direct acquired signal from right source loudspeakers including all the source loudspeakers distributed at the right side of the physical space, wherein the direct acquired signal from the right source loudspeakers is based at least on the source signal applied at the same time to all the right source loudspeakers.