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"The wireless music box has no imaginable commercial value. Who would pay for a message sent to nobody in particular?"
David Sarnoff, American radio pioneer ; 1921
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| Number | Title | Issue Date |
| 8184826 | Speaker system A speaker system includes a cabinet, at least one speaker unit fixed to the cabinet, and a gas adsorbent which is situated inside the cabinet and which is made from a porous material. The speaker unit is configured with moisture-proof component parts. In the speaker... | 05/22/2012 |
| 8170233 | Loudspeaker array system The invention is a multi-channel loudspeaker system that provides a compact loudspeaker configuration and filter design methodology that operates in the digital signal processing domain. Further, the loudspeaker system can be designed to include drivers of various p... | 05/01/2012 |
| 8160268 | Loudspeaker array system The invention is a multi-channel loudspeaker system that provides a compact loudspeaker configuration and filter design methodology that operates in the digital signal processing domain. Further, the loudspeaker system can be designed as a multi-way loudspeaker syst... | 04/17/2012 |
| 8139784 | Compound loudspeaker A compound loudspeaker comprises an acoustically radiating first diaphragm and an acoustically radiating second diaphragm. The first and second diaphragms are substantially coaxial and at least part of the second diaphragm is situated radially outwards of the first ... | 03/20/2012 |
| 8068618 | Spherical loudspeaker for omnipresent sound reproduction A highly compact loudspeaker system having a spherical housing produces time and phase coherent sound waves in an omnipresent manner throughout a spatial listening environment. Within is a relatively low frequency sound driver and a relatively high frequency sound d... | 11/29/2011 |
| 7957541 | Acoustic compliance adjuster A speaker arrangement is described, suitable for improving the sound quality of a small size first speaker. The arrangement comprises a cavity, to which the first speaker is acoustically coupled. A second speaker is also acoustically coupled to the cavity, and the f... | 06/07/2011 |
| 7912229 | Array driving system and method of driving loads Power amplifies are provided to correspond with a plurality of speaker units constituting a speaker array. Driving signals from the power amplifies are supplied to one terminals of the speaker units, and other terminals are connected a common line. Inverters are pro... | 03/22/2011 |
| 7489787 | Spa audio system A portable spa including an audio system designed to use the spa shell as the sound generating device. Transducer devices are mounted within an enclosure which is bonded to the spa shell so as couple the sound vibration energy to the shell so that sound can be heard... | 02/10/2009 |
| 7439873 | Synthetically generated sound cues Communication systems and apparatus to allow a user to perceive the relative spatial location or present position of other elements of interest in a control space, such as the location of a speaker participating in a telephone conference or that of an aircraft carri... | 10/21/2008 |
| 7426278 | Sound device provided with a geometric and electronic radiation control A sound device for carrying out a homogenous sound cover for a public addressed area includes an electroacoustic source network (1), wherein each electroacoustic source (1) diffuses a version delayed by a delay (3), filtered by a filter (4 | 09/16/2008 |
| 7350618 | Multimedia speaker product A satellite speaker system includes a side firing low mid driver mounted in a sub-enclosure which is vented into a second sub-enclosure through an acoustic resistance vent and to a third sub-enclosure through a variable aperture second vent. The vents further serve ... | 04/01/2008 |
| 7343018 | System of sound transducers with controllable directional properties The invention relates to loudspeaker systems or loudspeaker columns as used in public address systems and at (pop) concerts. Such systems heretofore possess a frequency-dependent coverage angle and strong second and third order side lobes. The invention describes fo... | 03/11/2008 |
| 7343020 | Vehicle audio system with directional sound and reflected audio imaging for creating a personal sound stage Automotive audio systems that use directional planar magnetic transducers in a layout or placement configuration to provide direct or reflected audio imaging in stereo or surround sounds for individual passengers of an automotive vehicle with reduced crossed audio i... | 03/11/2008 |
| 7316290 | Acoustic lens system A loudspeaker includes a frame, a magnet coupled to the frame and a diaphragm secured to the frame. An acoustic lens may be positioned in front of the diaphragm. An aperture extends through the acoustic lens. The acoustical directivity pattern of the loudspeaker may... | 01/08/2008 |
| 7292706 | Support structure of loudspeaker unit and loudspeaker system A support structure of a loudspeaker unit is constructed to prevent transmission of vibrations of the loudspeaker unit to a cabinet so that the quality of sound can be improved, and so as to have excellent stability in its assembled condition. The support structure ... | 11/06/2007 |
| 7260228 | Optimum driver spacing for a line array with a minimum number of radiating elements The loudspeaker has a first pair of drivers arranged in a line, a center point along the line, wherein the pair of drivers are substantially centered about the center point with a center to center distance, d0, between the drivers in the first pair of dri... | 08/21/2007 |
| 7260235 | Line electroacoustical transducing A line array loudspeaker system including a large number of small, regularly and closely spaced acoustical drivers. Each of the acoustical drivers receives essentially the same audio signal. In another embodiment, a line array includes a plurality of portable line a... | 08/21/2007 |
| 7254239 | Sound system and method of sound reproduction A sound reproduction system comprises a left and right speakers located in close proximity, and a sound processor which provides audio signals to the pair of speakers. The sound processor preferably derives a cancellation signal from the difference between the left ... | 08/07/2007 |
| 7218240 | Synthetically generated sound cues Communication systems and apparatus to allow a user to perceive the relative spatial location or present position of other elements of interest in a control space, such as the location of a speaker participating in a telephone conference or that of an aircraft carri... | 05/15/2007 |
| 7218743 | Speaker module and apparatus using this A speaker module includes a first diaphragm and a second diaphragm acoustically coupled with each other as a part of a wall forming a hermetic space with a panel. A light emitting section emits light to the panel, and the panel transmits the light to a side of the s... | 05/15/2007 |
| 7215788 | Digital loudspeaker A digital pulse-width-modulation (PWM) generator comprising: an n bit digital magnitude comparator having first and second n bit inputs and an output indicative of the relative values of the signals applied at the first and second inputs; a first n bit digital up/do... | 05/08/2007 |
| 7206427 | Flat panel surface array A surface loudspeaker array uses a plurality of sound sources, such as flat panel or planar magnetic transducers, that are mounted on either a flat or a curved surface to produce a substantially controlled sound dispersion in both the horizontal and vertical planes.... | 04/17/2007 |
| 7191022 | Public addressing system A sound-amplification apparatus comprises: an acoustic signal source for outputting an acoustic signal; an amplified sound source for receiving the acoustic signal from the acoustic signal source and radiating an amplified sound; a control sound source provided in a... | 03/13/2007 |
| 7181029 | Speaker system for picture receiver and speaker installing method A speaker system for a picture receiver provides for lessening of the casing width of the picture receiver while assuring highly uniform acoustic characteristic at listening points in a sufficiently broad range. The speaker system for picture receiver and its speake... | 02/20/2007 |
| 7162049 | Ported loudspeaker system and method with reduced air turbulence, bipolar radiation pattern and novel appearance A loudspeaker system includes a cabinet with an interior air volume, a transducer, a first port extending from an opening in the front wall of the cabinet to the interior of the cabinet, and a second port extending from and opening in the rear wall of the cabinet to... | 01/09/2007 |
| 7149691 | System and method for remotely experiencing a virtual environment A virtual environment system includes an acoustic localizer for detecting the location of sound sources in a local environment, a user data I/O device, a remote data I/O device in a remote world, and a system controller in data communication with the acoustic locali... | 12/12/2006 |
| 7139402 | Sound reproduction device A sound reproduction device of the present invention includes: a first loudspeaker; a second loudspeaker; a first loudspeaker drive section for driving the first and second loudspeakers, the first loudspeaker drive section drives the first and second loudspeakers at... | 11/21/2006 |
| 7134523 | System for integrating mid-range and high-frequency acoustic sources in multi-way loudspeakers This invention provides a radiation boundary integrator (“RBI”) for integrating sound radiation from mid-range and high-frequency sources in multi-way loudspeakers. The RBI is a substantially solid boundary that is placed over the mid-range speakers to provide s... | 11/14/2006 |
| 7127070 | Loudspeaker broadcasting system and loudspeaker broadcasting apparatus To provide a loudspeaker broadcasting system and a loudspeaker broadcasting apparatus which can perform a loudspeaker broadcasting of appropriate contents at each block without reducing sound clearness. Bi-directional speakers 1 which performs sound-reinforce... | 10/24/2006 |
| 7123724 | Sound system The invention is directed to a sound system with four loudspeakers and at least one signal processing device connected to the input of two loudspeakers and controlled by two input signals. The signal processing device produces control signals for the loudspeakers. T... | 10/17/2006 |
| 7123725 | High intensity infrasonic tunable resonant acoustic test cell An apparatus and method are provided for high intensity acoustic test cells that employ the Helmholtz resonator principle, incorporating at least one moderately-sized volume or test cell that is tunable to a given infrasonic to low-sonic frequency and generates soun... | 10/17/2006 |
| 7106880 | Universal ribbon element-module for two or more membrane-widths with optimized flow and drive A loudspeaker module in the form of a ribbon element, where the module can be equipped with a membrane, 50 millimeters in width or narrower, and with any length from 50 millimeters to 2500 millimeters. The magnet system is equipped with so called booster-magnets in ... | 09/12/2006 |
| 7093688 | Structure for preventing the generation of standing waves and a method for implementing the same A speaker assembly includes a speaker mounted within a housing having a front plate and a base plate. The speaker is inclined with respect to the front plate. The base plate includes one of an inclined type structure, a convex type structure, a radial rib type struc... | 08/22/2006 |
| 7095861 | Audible signaling device with determinate directional radiation An audible signaling device uses one or more digital signal processors to modify the shape of a sound field to put high sound pressure levels only in a predetermined pattern, thus minimizing undesirable high volume levels in adjacent areas. Using digital signal proc... | 08/22/2006 |
| 7088827 | Reconfigurable speaker system A reconfigurable speaker system for producing sound in response to at least one of right and left channel audio signals generated by an audio source. The speaker system can be configured by the user to simultaneously reproduce right and left channel audio informatio... | 08/08/2006 |
| 7069061 | Speaker assemblies and mobile terminals including the same Mobile terminals include a housing, an electronic circuit and a speaker assembly positioned in the housing. The speaker assembly includes a first speaker positioned adjacent a first side of the electronic circuit and a second speaker positioned adjacent the first sp... | 06/27/2006 |
| 7039206 | Dual diaphragm speaker A dual diaphragm speaker comprising first and second diaphragms operating in accordance with the piezoelectric effect, the diaphragms being arranged to be driven in opposite phase with respect to one another so as to cancel out non-linearities. The speaker is made t... | 05/02/2006 |
| 7035422 | Wearable speaker garments The personal wearable speaker system includes a garment having a plurality of substantially hollow tubular ducts formed from a substantially flexible material designed to promote superior sound wave flow and anti-collapse (pinch) functionality, and a plurality of pa... | 04/25/2006 |
| 6985593 | Baffle vibration reducing A vibration reducing apparatus comprising, a baffle subject to vibration, a first electroacoustical transducer characterized by a first mass seated in the baffle, a second electromechanical transducer mechanically connected to said first transducer or said baffle in... | 01/10/2006 |
| 6963650 | Coaxial speaker with step-down ledge to eliminate sound wave distortions and time delay A coaxial speaker assembly (10) with reduced sound distortion, sound time delay, and polar response distortion. The coaxial speaker assembly (10) includes a high-frequency speaker system (16) mounted coaxially with and fitting within a lower-fre... | 11/08/2005 |
