Patent ID: 9154865
Filing Date: 2015-10-06
Classification: H04R

Abstract:
1. An acoustic device, comprising: a housing having a top wall, a bottom wall, and a plurality of sidewalls cooperatively forming a space with the top and bottom walls; a mounting plate positioned in the space with edges thereof connecting to the sidewalls; a speaker unit mounted on the mounting plate, the speaker unit having a sound radiation surface; an inner wall extending from the mounting plate to the bottom wall for partitioning the space into a first space for receiving the mounting plate and a second space; a first volume formed between the top wall and the mounting plate; a second volume formed by the mounting plate, the inner wall, the bottom wall and the sidewalls connecting with the mounting plate, the sound radiation surface being capable of vibrating in the second volume; a barrier located in the second space for dividing the second space into an extra volume communicating with the first volume, and a sound channel communicating with the second volume; the extra volume being isolated from the sound channel, and the sound channel transmitting sounds from the sound radiation surface to outside of the acoustic device via a sound aperture formed in the housing.