ACOUSTIC SIGNAL OUTPUT DEVICE Russian patent published in 2023 - IPC H04R1/02 H04R1/28 

FIELD: acoustics; speakers.

SUBSTANCE: acoustic signal output device containing an emitter consisting of a diaphragm and a magnetic circuit. The diaphragm is configured to vibrate so that the acoustic emitter emits sounds outwards from its front and back sides, respectively; and a body structure configured to accommodate the acoustic radiator, wherein the rear side of the acoustic emitter and the body structure form a rear cavity, and the side walls of the rear cavity are connected to each other by a curved structure. At the same time, the housing design contains at least one sound outlet, and at least one specified sound outlet is acoustically connected to the rear cavity and is configured to output sound emitted into the rear cavity by an acoustic emitter to the outer side of the acoustic signal output device, when at least one specified sound outlet is located on at least part of the side walls of the rear cavity. The front side of the acoustic emitter and the body structure form the front cavity. The housing design includes at least one fourth sound hole. The fourth sound hole is configured to direct the sound generated by the diaphragm from the front side of the acoustic emitter to the outer side of the acoustic signal output device.

EFFECT: effective suppression of standing waves and expansion of the range of amplitude-frequency characteristics of the acoustic signal output device.

9 cl, 21 dwg