Force canceling speaker
AssigneeMeta Platforms Technologies, LLC
InventorJason Silver
Life of this patent
Estimating the term…
Abstract
Aspects of the present disclosure are directed to a speaker system that uses a single driver that results in both force and moment canceling. The speaker system can be mounted within a structure, such as a head mounted display. The speaker system includes a first moving mass, including a sound-producing diaphragm, connected by a primary suspension to a floating basket. The floating basket is both coupled to a second moving mass that controls a voice coil, inducing voice coil movement to produce sound via the diaphragm. A secondary suspension can couple the suspended basket and a fixed frame. The secondary suspension can reduce shaking and contamination generated by the magnet core/motor assembly from seeping into the fixed frame and subsequently to other connected components.
Claims20
A speaker system comprising:
- a basket;
- a voice coil;
- a first moving mass comprising a diaphragm and coupled to the voice coil, the first moving mass coupled to the basket via a non-rigid primary suspension having a first center;
- and
- a second moving mass comprising a motor assembly, the second moving mass directly coupled to the basket;
- wherein the basket is coupled to a fixed frame via a non-rigid secondary suspension having a second center;
- and
- wherein a first radius, from a central axis of the speaker system to a center of the non-rigid primary suspension, is approximately the same as a second radius, from the central axis to a center of the non-rigid secondary suspension.
A method of operating a wearable device comprising a fixed frame and a speaker system, the method comprising:
- applying an audio drive signal to the speaker system,
- wherein the speaker system comprises a basket, a voice coil, a first moving mass comprising a diaphragm and coupled to the voice coil, the first moving mass coupled to the basket via a non-rigid primary suspension having a first center, and a second moving mass comprising a motor assembly, the second moving mass directly coupled to the basket;
- wherein the basket is coupled to a fixed frame via a non-rigid secondary suspension having a second center;
- and
- wherein a first radius, from a central axis of the speaker system to a center of the non-rigid primary suspension, is approximately the same as a second radius, from the central axis to a center of the non-rigid secondary suspension.
Dependencies are inferred from the claim text.