Arkamys

Yann Lecoeur

Jérôme Monceaux

Frédéric Amadu

Georges Claude Vieilledent

Jean Michel Raczinski

Michel Corneloup

The invention relates to a method for the sound processing of a stereophonic signal inside a motor vehicle. In a first implementation ('driver' mode) the stereophonic sound source is centered in the middle of the dashboard for the 'driver' listen position. For this purpose, delays (t-t) are introduced into the frequency bands of the channels transmitted by the speakers, such that the driver appears to be at the center of a circle on which the car speakers are positioned. In a second implementation ('all passengers' mode), the phases of the signals of the two front channels are equalized, such that the sound source appears to be centered on the driver and the front passenger of the vehicle.

Method for the sound processing of a stereophonic signal inside a motor vehicle and motor vehicle implementing said method

A method of producing more than two different electric time sound signals (C(t), GF(t), DF(t), GA(t), DA(t)) from two initial electric time signals (GI(t), DI(t)). The method includes in the frequency domain, producing a central electric frequency sound signal (C(&#x3bd;)) from the in-phase frequency components of the initial signals; and producing two front signals (GF(t), DF(t)) by subtracting the central signal (C(t)) from the initial signals (GI(t), DI(t)) In addition, two rear signals (GA(t), DA(t)) can be produced from the out-of-phase frequency components of the initial signals. In this way, the method can be used to transform a stereophonic signal into a type 5.1 signal having five different sound signals.

Method for producing more than two electric time signals from one first and one second electric time signal

A method for generating a sound giving a sensation of depth by applying, after extraction, a transfer function quadrille onto electric sound signals on the left and right thereof. The transfer functions simulate the trajectories taken by the sound associated with the electric signal to be processed in order to reach two receivers, if this sound was emitted in air. The signals that have been processed, one by one, by one of the four transfer functions of the quadrille, are combined with each other, then the sound signal thus obtained is mixed with the original electric sound signal to be processed after a temporal reset.

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La Valette du Var, France

Yann Lecoeur