Oscillation echo canceller system

H - Electricity – 04 – R

Patent

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Details

H04R 1/10 (2006.01) H04R 3/02 (2006.01)

Patent

CA 2561021

An oscillation echo canceller system (1), comprising a hollow body (5) having an insert part (4) with an opening (3) formed in a size matching the hole of an ear. A microphone (10) and a speaker (11) are installed in the hollow body. The speaker is so formed that a sound releasing hole faces the opening at the insert part, and two or more of the even number of sound releasing paths (12) of the same length and inner diameter are formed facing from the sound releasing hole to the opening. The microphone is installed in the opening at the insert part at a position apart from the sound releasing hole of the speaker, and a sound collecting path (15) collecting sound from the opening is formed of such a material that cannot directly collect sound from the sound releasing path of the speaker.

Il est prévu un système suppresseur d'écho d'oscillation (1), comprenant un corps creux (5) ayant une partie insert (4) avec une ouverture (3) formée dans un format correspondant à l~entrée de l~oreille. Un microphone (10) et un haut-parleur (11) sont installés dans le corps creux. Le haut-parleur est formé pour qu~un trou de libération du son fasse face à l~ouverture de la partie insert, et deux ou plusieurs circuits de libération sonore (12), en nombre paire, de la même longueur et de même diamètre interne sont formés en face du trou de libération sonore vers l~ouverture. Le microphone est installé dans l~ouverture au niveau de la partie insert à un endroit écarté du trou de libération sonore du haut-parleur, et un circuit collecteur sonore (15) recueillant le son provenant de l~ouverture est constitué d~un tel matériau incapable de recueillir le son provenant du circuit de libération sonore du haut-parleur.

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