SOUND DEVICE Russian patent published in 2023 - IPC H04R1/10 

FIELD: acoustics.

SUBSTANCE: earpiece contains a diaphragm and a housing. The body is made with two holes. The diaphragm is located in the body, the holes are located on both sides of the diaphragm. When the user wears the sound reproducing device, the distance between the first sound opening and the ear canal opening is smaller than the distance between the diaphragm and the ear canal opening, the range of included angle values between the connecting line between the first sound opening and the second sound opening and the connecting line between the center of mass of the diaphragm and the opening ear canal less than 45°, and the distance between the second sound opening and the opening of the ear canal is greater than the distance between the diaphragm and the opening of the ear canal.

EFFECT: improved sound quality, reduced sound leakage.

10 cl, 17 dwg