Back to results
US 8,135,163 B2Granted
Balanced armature with acoustic low pass filter
AssigneeKlipsch Group, Inc.
InventorsMark Alan Blanchard, Bradley Carl Geswein, Eric A. Hruza, Onno Geschiere
Life of this patent
Estimating the term…
Abstract
A balanced armature apparatus is disclosed that includes dual transducers for generating sound waves in response to electric audio signals. The dual transducers include a motor assembly coupled to a diaphragm. A housing defines an interior chamber and the motor assembly and the diaphragm are positioned within the interior chamber. A pair of acoustic output ports is located in a respective end of the housing. A low pass acoustic filter is in communication with one of the acoustic output ports that is operable to attenuate a predetermined range of frequencies from an audio signal produced by one of the diaphragms.
Claims37
An apparatus, comprising:
- a motor assembly coupled to a diaphragm;
- a housing defining an interior chamber, wherein said motor assembly and said diaphragm are positioned within said interior chamber;
- an acoustic output port located in a respective end of said housing;
- and
- a low pass acoustic filter in communication with said acoustic output port operable to attenuate a predetermined range of frequencies from an audio signal produced by said diaphragm, wherein said low pass acoustic filter comprises an aperture formed as part of said housing.
2 more elements
A balanced armature speaker, comprising:
- a motor comprising a coil and a magnet assembly;
- an armature extending through said coil and said magnet assembly;
- a drive pin having one end coupled to said armature and a second end coupled to a membrane;
- a housing containing said motor, said armature, said drive pin and said membrane;
- and
- a spout coupled to a respective end of said housing including a low pass filter formed as an integral part of said spout.
3 more elements
An apparatus, comprising:
- a first transducer positioned in a housing;
- a second transducer positioned in said housing such that said first and second transducers are oriented in a side-by-side relation in said housing;
- a dividing member separating said first and second transducers such that said first and second transducers are substantially isolated from one another;
- a spout connected to a respective end of said housing;
- a first output port in said housing for directing sound waves generated by said first transducer through an output of said spout;
- and
- a second output port in said housing for directing sound waves generated by said second transducer through a low pass filter and then out of said spout.
4 more elements
A method, comprising:
- generating sound waves from a first transducer positioned in a housing;
- generating sound waves from a second transducer positioned in said housing;
- directing said sound waves generated by said first transducer to an output port located in a spout;
- and
- directing said sounds waves generated by said second transducer to a low pass filter located in said spout, wherein said low pass filter is formed as an integral part of said spout and sound waves directed to said low pass filter are isolated from sound waves generated by said first transducer.
2 more elements
An apparatus, comprising:
- a housing;
- a first motor assembly coupled to a first diaphragm positioned in a first side of said housing;
- a second motor assembly coupled to a second diaphragm positioned in a second side of said housing;
- a cover separating said first motor assembly and said first diaphragm from said second motor assembly and said second diaphragm thereby isolating said first motor assembly from said second motor assembly;
- a first acoustic output port located in said housing for directing sound waves generated from operation of said first diaphragm out of said housing;
- a second acoustic output port located in said housing for directing sound waves generated from operation of said second diaphragm out of said housing;
- and
- a filter in communication with said first acoustic output port for attenuating a predetermined range of frequencies from said sound waves generated by operation of said first diaphragm.
5 more elements
An in ear audio system, comprising:
- an electric audio signal source for producing an electric audio signal;
- a crossover connected with said electric audio signal source including a low pass filter and a high pass filter;
- a balanced armature speaker connected with a first output of said low pass filter and a second output from said high pass filter;
- and
- wherein said balanced armature speaker includes a motor assembly coupled to a diaphragm;
- a housing defining an interior chamber, wherein said motor assembly and said diaphragm are positioned within said interior chamber;
- an acoustic output port located in a respective end of said housing;
- and a low pass acoustic filter in communication with said acoustic output port operable to attenuate a predetermined range of frequencies from an audio signal produced by said diaphragm.
5 more elements
Dependencies are inferred from the claim text.