Abstract: The electrical apparatus (10) in particular a telephone comprises a box (12) and an electro-acoustic transducer (16) disposed in said box (12). Said box (12) comprises a bearing zone (25) supporting an ear of a user, said bearing zone (25) comprising an exit aperture (26) of said electro-acoustic transducer (16). Said box (12) furthermore comprises a decompression aperture (32) made through said bearing zone (25). The electrical apparatus (10) comprises an essentially sealed resonant enclosure (18), inside which is disposed said electro-acoustic transducer (16). Said enclosure (18) comprises an interference aperture (28) made through a wall (20) of said enclosure, and a leakage aperture (30) linking said rear volume (24) to the outside. Said interference aperture (28) emerges through said bearing zone (25). Said leakage aperture (30) emerges through a zone separate from said bearing zone (25). Said decompression aperture (32) emerges outside said enclosure (18).

Abstract: The electrical apparatus (10) in particular a telephone comprises a box (12) and an electro-acoustic transducer (16) disposed in the said box (12). The said box (12) comprises a bearing zone (25) supporting an ear of a user, the said bearing zone (25) comprising an exit aperture (26) of the said electro-acoustic transducer (16). The said box (12) furthermore comprises a decompression aperture (32) made through the said bearing zone (25). The electrical apparatus (10) comprises an essentially sealed resonant enclosure (18), inside which is disposed the said electro-acoustic transducer (16). The said enclosure (18) comprises an interference aperture (28) made through a wall (20) of the said enclosure, and a leakage aperture (30) linking the said rear volume (24) to the outside. The said interference aperture (28) emerges through the said bearing zone (25). The said leakage aperture (30) emerges through a zone separate from the said bearing zone (25).