Transducer assembly and associated signal processing
AssigneeDolby Laboratories Licensing Corporation
InventorsPengfeng Zhang, Hui Yang, Nengkun Lv
Life of this patent
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Abstract
Example embodiments disclosed herein relate to a transducer assembly and associated signal processing. A transducer assembly includes two voice coils in a telescopic arrangement and having unequal sizes, and two suspension systems connected to the two voice coils, respectively. The two voice coils extend in opposites directions from their suspension systems. Dimensions of respective wires of the two voice coils are determined based on respective magnetic flux densities in magnetic gaps for receiving the two voice coils. As a result, a residual vibration caused by the unequal-sized voice coils can be further reduced.
Claims28
A transducer assembly comprising:
- a first voice coil and a second voice coil, the first and the second voice coils having different sizes and being arranged in a telescopic arrangement;
- a first suspension system connected to the first voice coil, the first voice coil being disposed to extend from the first suspension system in a first direction to a first plane that is orthogonal to the first direction;
- a second suspension system connected to the second voice coil, the second voice coil being disposed to extend from the second suspension system in a second direction opposite to the first direction to a second plane that is orthogonal to the second direction;
- a magnet system defining a first magnetic gap for at least partially receiving the first voice coil and a second magnetic gap for at least partially receiving the second voice coil;
- a frame defining a space therein;
- and
- a yoke for at least partially attaching the magnet system to the frame, wherein the yoke has a wall extending along a first axis of the frame and has no wall extending along a second axis of the frame, the second axis being longer than the first axis,
- wherein the first plane and the second plane are the same plane.
A transducer assembly comprising:
- a first voice coil and a second voice coil, the first and the second voice coils having a same size and being arranged in an opposite and lengthwise offset arrangement;
- a first suspension system connected to the first voice coil, the first voice coil being disposed to extend from the first suspension system in a first direction to a first plane that is orthogonal to the first direction;
- a second suspension system connected to the second voice coil, the second voice coil being disposed to extend from the second suspension system in a second direction opposite to the first direction to a second plane that is orthogonal to the second direction;
- a magnet system defining a first magnetic gap for at least partially receiving the first voice coil and a second magnetic gap for at least partially receiving the second voice coil;
- a frame defining a space therein;
- and
- a yoke for at least partially attaching the magnet system to the frame, wherein the yoke has a wall extending along a first axis of the frame and has no wall extending along a second axis of the frame, the second axis being longer than the first axis,
- wherein the first plane and the second plane are the same plane.
Dependencies are inferred from the claim text.