EARBUD WITH MEMBRANE BASED ACOUSTIC MASS LOADING

摘要

An in-ear earphone housing has a speaker driver installed therein. The driver has a diaphragm with a front face and a rear face, and a motor to vibrate the diaphragm in accordance with an audio signal. A back volume chamber is positioned behind the driver within the earphone housing. The diaphragm is part of a wall of the back volume chamber. An acoustic mass loading membrane that is part of a wall of the back volume chamber, and that is to vibrate in response to acoustic waves produced by vibration of the diaphragm impinging on a front face of the membrane, is provided. Other embodiments are also described and claimed, including a polymer production process for an elastic material.

主权项

1. An earphone comprising:
an in-ear earphone housing; a speaker driver installed in the housing, the driver having a diaphragm with a front face and a rear face, and a motor to vibrate the diaphragm in accordance with an audio signal; a back volume chamber within the earphone housing, wherein the diaphragm is part of a wall of the back volume chamber; and an acoustic mass loading membrane that is part of a wall of the back volume chamber and that is to vibrate in response to acoustic waves, produced by vibration of the rear face of the diaphragm, impinging on a front face of the membrane.