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| Number | Title | Issue Date |
| 8054987 | System for wireless audio signal distribution between a plurality of active loudspeakers Each loudspeaker (10, 10′) comprises means, e.g. of the Bluetooth type, for establishing a wireless interface with every other loudspeaker of the system. The network configures itself automatically by each loudspeaker searching for the other loudspeakers wi... | 11/08/2011 |
| 8041051 | Dual streaming with exchange of FEC streams by audio sinks A system and method is described herein in which an audio source wirelessly transmits audio content to a first audio sink over one wireless link and to a second audio sink over another wireless link. The two audio sinks also exchange forward error correction (FEC) s... | 10/18/2011 |
| 7899194 | Dual ear voice communication device A method for voice communication which includes sensing at least one channel of audio information from proximate a first external auditory canal of a user, sensing at least one channel of audio information proximate a second external auditory canal of the user, and ... | 03/01/2011 |
| 7424118 | Moving object equipped with ultra-directional speaker A moving object 1 equipped with ultra-directional speaker is provided with an emitter 44 for measuring a distance to a target 11 to which it is to provide a voice by using an ultrasonic transmit sensor 45 and an ultrasonic receive sensor ... | 09/09/2008 |
| 7418106 | Apparatus and methods for increasing magnetic field in an audio device An audio device is provided that is in electrical communication with a magnetic coil for the purpose of increasing magnetic field emissions generated by the device. The magnetic coil may be disposed on a flexible substrate in multi-turn and multi-layer format or dis... | 08/26/2008 |
| 7395090 | Personal portable integrator for music player and mobile phone A personal portable integrator is used to integrate the services of an arbitrary audio delivery device such as an MP3, CD, DVD, radio, or other media player, with the services of an arbitrary two-way communication device such as a mobile phone, or a two-way radio su... | 07/01/2008 |
| 7359451 | System and method for wirelessly transmitting and receiving digital tokens for use in electronic gameplay A system and a method for the transmission and reception of digital data wirelessly using acoustic tones comprises a device having an encoder, a modulator system, a demodulator system, and a decoder. The modulator system uses a plurality of acoustical tones with a f... | 04/15/2008 |
| 7343017 | System for playback of pre-encoded signals through a parametric loudspeaker system A method and system for generating parametric output directly from a prerecorded and error corrected parametric signal for playback in a parametric loudspeaker system. The method includes the step of retrieving a pre-encoded audio signal from an electronically reada... | 03/11/2008 |
| 7343015 | Method and apparatus for high fidelity wireless stereophonic transmission utilizing dual frequency carriers A method and system is disclosed for transmitting two related channels of signals through the air. A first channel of signals is modulated with a first carrier frequency, and a second channel of signals is modulated with a second carrier frequency. The modulated fir... | 03/11/2008 |
| 7324857 | Method to synchronize playback of multicast audio streams on a local network A method is provided for synchronizing the playback of a digital audio broadcast on a plurality of network output devices using a microphone near a source, embedded control codes, and the audio patterns from the network output devices. An optional, additional manual... | 01/29/2008 |
| 7319763 | Power amplification for parametric loudspeakers A power amplifier for a parametric loudspeaker system which utilizes switch-mode power conversion to increase efficiency. The power amplifier is configured to coordinate the switching frequency of the amplifier with the carrier frequency of the parametric loudspeake... | 01/15/2008 |
| 7315729 | Wireless transmitter for use in a vehicle A connecting device comprises a first power plug for connecting to a power output port of a vehicle, a second power plug for connecting to a power input port on an electronic device, at least one signal plug for connecting to at least one signal output port of the e... | 01/01/2008 |
| 7313242 | Hypersonic transducer This invention provides methods and apparatus for focusing a hypersonic beam to control both a direction and depth of audible formation delivery. Signals that are delivered to each of a plurality of hypersonic transducer elements are adjusted in phase so that transm... | 12/25/2007 |
| 7298853 | Parametric virtual speaker and surround-sound system A system for generating at least one remote virtual speaker location in connection with at least a partial reflective environment (12, 12, 14 or 15) in combination with an audio speaker for creating multiple sound effects including a virtual sound sour... | 11/20/2007 |
| 7283922 | Transducer employing wireless transmissions for sending and receiving signals A transducer is implemented to operate with transmitted frequency signals. These transmitted signals provide a bias potential to the transducer and enable the transducer to transmit a transducer output signal to a remote location. The transducer has an antenna for r... | 10/16/2007 |
| 7262359 | Digital recording device for electric guitars and the like A digital recording device includes a housing that is engageable with a lower curvature of a guitar's frame. The housing includes an arcuate inner surface, an arcuate outer surface coextensively shaped with the inner surface, and a padded member conjoined to the ext... | 08/28/2007 |
| 7197148 | System for controlling remote speakers using centralized amplifiers, centralized monitoring and master/slave communication protocol An apparatus and method for providing a centralized speaker system that allows multiple speakers connected to a central amplifier speaker line to be monitored and controlled from a central location via a master/slave protocol. The centralized speaker system comprise... | 03/27/2007 |
| 7194055 | Frame synchronization device, communication terminal apparatus using this device and frame synchronization method According to the present invention, there is disclosed a frame synchronization device which detects a time point to start a data frame from a received signal. Here, the received signal is constituted by disposing the data frame following a preamble period constitute... | 03/20/2007 |
| 7181024 | Portable audio listening apparatus A portable audio listening apparatus includes, for example, a portable audio playback apparatus serving as a portable transmission apparatus and a headphone serving as a portable receiving apparatus. The portable audio playback apparatus has an electrode at its side... | 02/20/2007 |
| 7181023 | Distributed stereo system This invention concerns a distributed stereo audio system (1). Distributed stereo audio systems are used to provide stereo sound to several rooms or areas from a single source of signal. The system includes two or more speakers (2, 3) for the broadcast... | 02/20/2007 |
| 7170396 | Addressable smart speaker An addressable smart speaker for use in a fire alarm system connects to and receives messages over a network, has plural taps for selecting audio power. In response to a command, a selector in an addressed smart speaker selects a tap to select a particular audio pow... | 01/30/2007 |
| 7162042 | Modulator processing for a parametric speaker system A parametric loudspeaker system using improved modulators to compensate for the non-linearity of the parametric process in air when driving the air at saturation levels and below saturation levels. The parametric loudspeaker uses a pre-processed single sideband modu... | 01/09/2007 |
| 7155164 | Method and apparatus for performing transmit pre-emphasis A pre-emphasis circuit and methods are provided. The circuit includes a first amplifier and a second amplifier. The first amplifier is operable to amplify a signal using a first amplifier current, and the second amplifier is operable to amplify a delayed version of ... | 12/26/2006 |
| 7146011 | Steering of directional sound beams Apparatus is disclosed for steering a directional audio beam that is self-demodulated from an ultrasound carrier. The apparatus includes means for modulating a carrier signal with an audio signal and means for adjusting the amplitude and phase of at least one of the... | 12/05/2006 |
| 7133023 | Context input device The invention provides for context detecting apparatus which includes a housing shaped to allow the apparatus to be positioned in a plurality of orientations each corresponding to at least one particular context, means adapted to detect the orientation and communica... | 11/07/2006 |
| 7130430 | Phased array sound system An array of speakers are fed from a single source of audio frequency sound but each speaker transmits the sound delayed by an amount which is determined by the distance between a particular speaker and a selected region in space, so that sound from each speaker cons... | 10/31/2006 |
| 7110552 | Personal listening device for arena events A method and apparatus for transmitting sound generated at an event to those in attendance at the event is shown. This is accomplished by a system that collects an acoustic audio signal generated at a first location within a fixed space. The system also conditions t... | 09/19/2006 |
| 7099483 | Sound control system, sound control device, electronic device, and method for controlling sound A sound control system includes a plurality of electronic devices connected to a communication network, each of the electronic devices being capable of independently producing sound from connected speakers, and a sound control device transmitting control signals for... | 08/29/2006 |
| 7099486 | Multi-coil coupling system for hearing aid applications A hearing improvement device using a multi-coil coupling system and methods for operating such a device are disclosed. An embodiment of the present invention may use an array microphone to provide highly directional reception. The received audio signal may be filter... | 08/29/2006 |
| 7096169 | Virtual speaker demonstration system and virtual noise simulation A virtual speaker demonstration system is disclosed that permits a retail outlet to use a reference speaker to demonstrate the performance of multiple different demonstration speakers. A user interface permits a user to select a demonstration speaker and signal proc... | 08/22/2006 |
| 7095866 | Wireless 900 MHz broadcast link A high frequency signal transmission apparatus includes a transmitter for transmitting received signals from a signal source as a modulated signal on a high frequency 900 MHz carrier to a remote receiver. The remote receiver converts the high frequency carrier in at... | 08/22/2006 |
| 7092531 | Sound output apparatus for an automotive vehicle An output section, consisting of a pair of loudspeakers disposed adjacently to each other, is installed inside a seatback of a designated seat. Sound output surfaces of respective loudspeakers face a designated person sitting on the designated seat. It is hence easy... | 08/15/2006 |
| 7082203 | Wireless audio transmission method and apparatus for coupling audio players to audio receivers A wireless audio transmission apparatus and method for coupling audio players to audio receivers for broadcast of audio signals stored in and processed by the audio player. A housing carrying operative circuitry is electrically connected by a multiconductor cable to... | 07/25/2006 |
| 7024003 | Wireless speaker system suitable for hard-wired audio system A wireless speaker system used in conjunction with a hard-wired audio system is provided. The wireless speaker system includes a wireless transmitter module including an input connected to a wired speaker output of a main component of the hard-wired audio system. Th... | 04/04/2006 |
| 7010131 | Quasi-differential power amplifier and method A quasi-differential power amplifier and method are disclosed that enhance drive capability and dynamic range by driving a right, left and common terminals with a right channel output signal, a left channel output signal, and a common mode output signal that are eac... | 03/07/2006 |
| 6987992 | Multiple wireless microphone speakerphone system and method A multiple wireless microphone speakerphone system includes one or more wireless microphones. The wireless microphones accept speech and transmit the speech to receivers, one receiver corresponding to each wireless microphone. Audio processing and acoustic echo canc... | 01/17/2006 |
| 6985592 | Multipurpose earphone set An earphone apparatus is designed for an audio device and a portable communication terminal device. The earphone apparatus includes a first plug for disconnectable connection with the audio device, and a second plug for disconnectable connection with the portable co... | 01/10/2006 |
| 6975737 | Speaker mounting structure of head rest in vehicle A speaker mounting structure is provided in a head rest at an upper portion of a seat. A pair of left and right speakers are mounted to the head rest, which has a through-bore at a central portion so the speakers only occupy a lower half of the through-bore. ... | 12/13/2005 |
| 6937718 | Method and apparatus for personalized conference and hands-free telephony using audio beaming The present invention is directed to the provision of a personalized speaker phone and hands-free telephony. In particular, the present invention allows communications to be output along a narrowly defined path, rather than being broadcast. In this way, a private vo... | 08/30/2005 |
| 6859417 | Range finding audio system A range finding audio system automatically modifies the audio output of an audio source based on the distance of a listener from the speakers. A speaker in an audio system may include a range device coupled with a controller. The range device may utilize infrared, l... | 02/22/2005 |
