Sound acquisition method and system, and sound acquisition...

Details Sound acquisition method and system, and sound acquisition... Sound acquisition method and system, and sound acquisition...

H - Electricity

04

R

H04R 27/00 (2006.01) H04R 1/34 (2006.01) H04R 1/40 (2006.01) H04R 3/00 (2006.01)

Patent

CA 2120019

Several microphones (M1, M3) are arranged substantially in the same plane (P) and they are distributed symmetrically with respect to a direction of symmetry (D) perpendicular to this plane (P). A phase shift is applied between the signals output respectively by different microphones (M1, M3) and the signals thus phase shifted are added, in such a way as substantially to cancel the signals relating to any sound wave arriving in phase and with the same intensity on each of the microphones (M1, M3). The apparatus may. moreover, be equipped with a loudspeaker (4) arranged on the direction of symmetry (D) and oriented alone this direction, opposite the microphones (M1, M3). Use especially with an audioconferencing system.

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