| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 381351000 | Plural chambers | 19 |
| 20080219489 | SPEAKER SET AND ELECTRONIC PRODUCT INCORPORATING THE SAME - An electronic product ( | 09-11-2008 |
| 20080219490 | SPEAKER SET FOR ELECTRONIC PRODUCT - A speaker set ( | 09-11-2008 |
| 20090190784 | MULTI CHAMBER PORTED STEREO SPEAKER - A method and apparatus for a multi-chamber ported stereo speaker is disclosed. The stereo speaker is a single unit with multi-chambers in an enclosure box. The multi chamber ported speaker comprises an enclosure housing a shared acoustic chamber having an external port for allowing air external of the enclosure box to flow into the shared acoustic chamber, and at least two additional chambers comprising a corresponding internal port in each additional chamber for forming an air pass from each additional chamber with the shared chamber, each additional chamber comprising a corresponding driver mounted through a wall of the chamber and enclosure box for forming the ported speaker. | 07-30-2009 |
| 20090296971 | Hearing Instrument Receiver With Improved Low-Frequency Efficiency - The low frequency efficiency of a hearing instrument receiver can be improved by increasing the unoccupied rear volume. The receiver may be configured with one or more motor and diaphragm assemblies. The receiver may also be fabricated using multiple, conventional receivers with an added housing to create the increased, unoccupied rear volume. | 12-03-2009 |
| 20100177921 | RESPONSE SPEAKER SYSTEM - A sound generator like a guitar supplies an electrical out put to operate speakers that are mounted in a chassis. The electrical output is divided into three frequency ranges, separately amplified and delivered to speakers mounted in a three separate enclosures each acoustically isolated from the other. | 07-15-2010 |
| 20100310106 | IN-EAR HEADPHONES - An earphone is disclosed that is used in connection with reproducing audio sounds that are supplied from an audio-frequency source. The earphone includes a housing that includes a boot assembly positioned in the housing. A first audio driver is positioned in the boot assembly such that a first output of the first audio driver is in acoustic communication with a mixing chamber. A second audio driver is also positioned in the boot assembly such that a second output of the second audio driver is in acoustic communication with a chamber in the boot assembly. A tubular needle is positioned in the boot assembly having a first end in acoustic communication with the chamber and a second end in acoustic communication with the mixing chamber. | 12-09-2010 |
| 20110058700 | Inverse Horn Loudspeakers - In a low frequency transducer system a multi-compression chamber, inverse horn structure is employed in combination with a resonance-distortion filter chamber. The filter chamber effectively expands the effective enclosure volume at low frequencies and connected to one of the compression chambers filter parasitic resonances and distortion and allowing the system to more efficiently reproduce low frequencies while being able to use smaller diameter transducers and maintaining good system sensitivity. Compression chambers are organized for constant or continuous compression on a section-by-section basis throughout the inverse horn system. | 03-10-2011 |
| 20120070026 | SPEAKER SYSTEM - A speaker system includes a case having a receiving chamber; a variable mechanism received in the receiving chamber for dividing the receiving chamber into a first chamber and a second chamber and being capable of varying a volume of the first chamber; and a speaker unit is received in the first chamber and defining an acoustic port facing an exterior of the case. The separating wall alternatively inserts into one of the receiving member for placing the separating wall precisely at specific locations. Thus, it is easy to vary the volume of the first chamber for achieving an excellent acoustic capability of the speaker system. | 03-22-2012 |
| 20120099751 | ATTACHABLE EXTERNAL ACOUSTIC CHAMBERS FOR A MOBILE DEVICE - A wireless mobile electronic device includes a first housing and a first acoustic chamber disposed within the first housing. A sound generator, within said first housing, is acoustically coupled to the first acoustic chamber. Additionally, a first acoustic port defines an opening into the first acoustic chamber. The acoustic port includes a first mating structure configured for mating with a second mating structure of a second acoustic chamber, exclusive of said first housing. | 04-26-2012 |
| 20130129135 | MULTIPLE-USE ACOUSTIC PORT - Two or more acoustic transducers share the same acoustic port in a device. The acoustic properties—such as acoustic impedance and frequency response—of the shared acoustic port are matched to each of the two or more acoustic transducers. To accomplish acoustic impedance matching, a separate back volume is provided for each of the acoustic transducers, matched to that transducer. Frequency response matching can be accomplished by the design of the transducer itself, but also by providing an adjacent element in the acoustic system of the transducer. One transducer may serve as an element in the acoustic system of another transducer. Frequency response adjustment of an individual element may also affect acoustic impedance of the entire port-transducer system. | 05-23-2013 |
| 20140003645 | ACOUSTIC FILTER | 01-02-2014 |
| 20140064541 | Wrist Band and Other Portable Loudspeakers and Electronic Apparatus Utilizing Same - The invention provides in some aspects a loudspeaker, for example, configured in a band-like shape and suitable, for example, for wearing as a wristband, armband, legband or the like. A related aspect of the invention is to provide such a wearable loudspeaker comprising a band-shaped enclosure, a driver that is mounted in the enclosure, and an active diaphragm that is coupled to the driver to generate sound waves directed outwardly from the enclosure (referred to below as “outwardly directed waves,” “outward waves” and, more often, by analogy to a conventional, non-wearable loudspeaker “frontward-directed sound waves” or, more simply, “front waves”) and backward-directed sound waves (“back waves”) directed inwardly into the enclosure (referred to below as “inwardly directed waves,” “inward waves” and, more often, by analogy to a conventional loudspeaker “backward-directed waves” or, more simply, “back waves”). A reflective member, which is also disposed within the enclosure and/or on an inner surface of a wall thereof, reflects one or more components of the back wave. | 03-06-2014 |
| 20160066082 | SOUND PRESENTATION DEVICE - A sound presentation device including: a casing; an electroacoustic transducer that is installed in such a way that a space inside the casing is divided into a first empty chamber and second empty chamber that are acoustically isolated, and that receives an electrical signal and vibrates; and a vibration plate that makes contact with a body surface of a human body when the sound presentation device is mounted on the body surface, and causes vibration of the electroacoustic transducer to be propagated to the human body via the first empty chamber, the second empty chamber suppressing sound waves produced by the vibration of the electroacoustic transducer from being emitted to outside of the sound presentation device via the second empty chamber. | 03-03-2016 |
| 20160100247 | SPEAKER - A modular loudspeaker includes a plurality of chambers and a plurality of vibration plates. Each vibration plate is fixed to two chambers, to cause the chambers to be secured to each other in a certain orientation by the vibration plates. A vibrator is attached to each vibration plate. A processor and a wireless communication unit are received in each chamber. The vibrator attached to each vibration plate is electrically connected to the processor, and the processor is configured to control the vibrator to vibrate when the loudspeaker receives a wireless audio signal via the wireless communication unit, thereby causing the vibration plate to vibrate and output sound. | 04-07-2016 |
| 20160119718 | DOUBLE-VIBRATING-DIAPHRAGM LOUDSPEAKER MODULE - A double-diaphragm loudspeaker module comprises: a housing providing with a first sound hole and a second sound hole; a supporting structure fixed on an inner wall of the housing; and a loudspeaker unit comprising a first diaphragm, a sound coil, a magnetic circuit system and a second diaphragm. The sound coil and the magnetic circuit system are separately combined with the first diaphragm and the second diaphragm. The housing, the supporting structure and the loudspeaker unit form a first front sound cavity, a second front sound cavity, and a rear sound cavity. The first front sound cavity comprises a space between the first diaphragm and the housing. The second front sound cavity comprises a space between the second diaphragm and the housing. The rear sound cavity comprises a space between the first diaphragm and the second diaphragm. | 04-28-2016 |
| 20160134963 | SPEAKER - A speaker includes a speaker enclosure and at least one speaker driver. The speaker enclosure includes an upper housing and a lower housing matched with the upper housing. A bottom face of the upper housing is recessed upward to form a first chamber. The upper housing defines at least one first opening communicating with the first chamber. The speaker driver is fitted in the first opening hermetically. A top face of the lower housing is recessed downward to form a second chamber. The second chamber is interconnected with the first chamber to form an inner chamber in the speaker enclosure. An adjusting assembly is disposed in the second chamber of the lower housing. The adjusting assembly is used to adjust the air volume in the inner chamber by selectively installing a different dimension of the adjusting assembly or a different number of the adjusting assembly. | 05-12-2016 |
| 20160134964 | LOUDSPEAKER MODULE - A loudspeaker module includes a housing composed of a hollow spherical central section having a central cavity and a plurality of wing members extending from the spherical central section. Each of the plurality of wing members includes a wing member cavity in fluid communication with the central cavity of the spherical central section. A central driver mounting plate secures a low-frequency driver to an aperture formed in the spherical central section. A loudspeaker module may also include a mid-range/high-frequency driver where a full range of sound frequencies are desired. | 05-12-2016 |
| 20160157027 | HEARING DEVICE WITH IMPROVED LOW FREQUENCY RESPONSE AND METHOD FOR MANUFACTURING SUCH A HEARING DEVICE | 06-02-2016 |
| 20160165335 | A LOUDSPEAKER WITH A HELMHOLTZ RESONATOR - The present invention relates to a loudspeaker ( | 06-09-2016 |
