Patent ID: 11917348
Assignee: XMEMS TAIWAN CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A covering structure, disposed within a sound producing package, the covering structure comprising:
a first portion, configured to form a first sound outlet having a first diameter;
a second portion, configured to form a chamber having a second diameter; and
a third portion, configured to form a second sound outlet having a third diameter;
wherein the first sound outlet, the chamber and the second sound outlet provide an acoustic pathway, the first diameter is smaller than the second diameter, and the third diameter is smaller than the second diameter;
wherein the second portion is disposed between the first portion and the third portion;
wherein the sound producing package comprises a sound producing device configured to produce an acoustic wave;
wherein the acoustic wave propagates through the second sound outlet having the third diameter before the acoustic wave propagates through the first sound outlet having the first diameter which is smaller than the third diameter.