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| Number | Title | Issue Date |
| 8077877 | Courtesy announcement system and method of using A courtesy announcement system and method for broadcasting messages audially and visually having a central database server connected to operator workstation computers. Announcements stored and maintained in the database server can be accessed, viewed, modified, and ... | 12/13/2011 |
| 7995770 | Apparatus and method for aligning and controlling reception of sound transmissions at locations distant from the sound source A receiver and method is for receiving wireless transmissions including program data and locating data, and for determining its location from the locating data, and optionally from a stored representation of a venue and/or sound reproducing transducers therein. The ... | 08/09/2011 |
| 7440750 | Signal routing for reduced power consumption in a conferencing system A technique is provided for reducing power consumption of an internally powered console in an audio system through frequency based signal routing. A system employing the technique includes a base unit having an interface for receiving a signal representative of acou... | 10/21/2008 |
| 7436971 | Mixing signal-path setting apparatus and program One or more input channels are selected from among a plurality of input channels, and signals of the selected one or more input channels are mixed into a first output channel. A particular input channel to be excluded from the plurality of input channels is set as d... | 10/14/2008 |
| 7433821 | Methods and systems for intelligibility measurement of audio announcement systems A measurement system and method combine an audio announcement system with a plurality of spaced apart wirelessly coupled devices which evaluate speech intelligibility of audio output from loudspeakers of the audio announcement system. Processing can take place at so... | 10/07/2008 |
| 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 |
| 7408442 | Programmable event driver/interface apparatus and method A programmable event driver/interface has timekeeping and scheduling functions and tone and voice capabilities. A software-based interface allows for direct communication with individual annunciators and dynamic grouping of annunciators by zone. System state of heal... | 08/05/2008 |
| 7376476 | Methods for changing time intervals of the occurrence of audio information from local and remote sites A method of processing audio information for broadcast to an audience can include changing first audio information from occurring in a first time interval to occurring in a second time interval to provide time-changed audio information. The time-changed audio inform... | 05/20/2008 |
| 7367423 | Speaker assembly with aiming device A speaker assembly aimable relative to a remote target. The speaker assembly comprising a sound generating device configured to project sound in a sound pattern about a sound axis. A speaker aiming device is coupled to the sound generating device for use in visually... | 05/06/2008 |
| 7369061 | Vehicle locator device A device for locating a parked vehicle has a remote mobile unit with an aerodynamic housing, including a base and a transparent lens covering an illuminating visual indicator, such as a strobe light. The base contains a battery power source, an electronic sound emit... | 05/06/2008 |
| 7359671 | Multiple channel wireless communication system A wireless audio distribution system may have a wireless transmitter, responsive to a plurality of audio input channels, for transmitting signals carrying the audio, a receiver, responsive to the transmitted signals for selecting one or more of the audio input chann... | 04/15/2008 |
| 7356603 | Integrated system of loads with multiple public awareness functions A signaling system may include two subsystems that share a common wiring backbone and provide public awareness functions. The two subsystems may be a public address system and a master/slave clock system. Remote rooms at the tail end of the wiring backbone include a... | 04/08/2008 |
| 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 |
| 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 |
| 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 |
| 7295809 | Portable audio playback device with bass enhancement Wirelessly linking a portable audio device to an external audio system permits the external audio system to generate audible signals that enhance local playback of audio by the portable device. For example, the portable device wirelessly transmits lower frequency co... | 11/13/2007 |
| 7277551 | Sound reproducing apparatus and sound reproducing method A sound reproducing apparatus includes a low-frequency sound reproducing unit for reproducing and outputting a low-frequency sound having a frequency of a predetermined frequency or less; a high-frequency sound reproducing unit for reproducing and outputting a high-... | 10/02/2007 |
| 7274301 | Access control device with electronic identification and audio communication capability An access control device including electronic identification device, the access control device characterized in that the access control device also includes an audio communication device. ... | 09/25/2007 |
| 7266927 | Drive-in movie theater with short range sound system The present invention relates to a drive-in movie theater and/or events center preferably located on top of one or more parking garages located at a shopping mall or other similar complex. The drive-in theater preferably has a short range radio broadcast system that... | 09/11/2007 |
| 7236600 | Transmission of power and/or signalling between an audio distribution unit and a plurality of remote audio transducers A remote-controlled audio system comprises sets of loudspeakers (14A-14D) connected to power amplifier units (22A-22D) in an audio distribution unit (10) to which several audio sources, such as a compact disc unit, a tape deck, etc... | 06/26/2007 |
| 7221260 | Multi-sensor fire detectors with audio sensors and systems thereof An ambient condition detector incorporates an audio transducer for discrimination between alarm and non-alarm conditions. The transducer can provide occupancy information. In addition, a monitoring system can graphically present information as to the location of ind... | 05/22/2007 |
| 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 |
| 7211928 | Apparatus, circuitry, signals and methods for cleaning and/or processing with sound The invention utilizes a multiple frequency ultrasound generator driving a multiple frequency harmonic transducer array to improve cleaning and processing effects while eliminating damage to parts being cleaned. An AC switch and circuitry to modify the output of an ... | 05/01/2007 |
| 7206421 | Hearing system beamformer The present invention, generally speaking, picks up a voice or other sound signal of interest and creates a higher voice-to-background-noise ratio in the output signal so that a user enjoys higher intelligibility of the voice signal. In particular, beamforming techn... | 04/17/2007 |
| 7206417 | Wireless digital transmission system for loudspeakers This invention relates to a wireless digital transmission system for loudspeakers comprising: compression means for the file representing the digital audio signal of the “compact disc” type, a transmission device comprising mea... | 04/17/2007 |
| 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 |
| 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 |
| 7155412 | Billing for use of a telephony device A method, system, and program for billing a caller for use of an origin device are provided. Usage, of at least one measurable element of a telephony device by an identified individual, is tracked, where the identified individual is distinct from an owner of the ori... | 12/26/2006 |
| 7155017 | System and method for controlling audio signals for playback An apparatus and method for controlling a plurality of speakers, comprising an amplifier for amplifying and outputting a play signal to be played over the speakers; and at least one sensor disposed proximal to at least one of the speakers for sensing at least one en... | 12/26/2006 |
| 7151910 | Wireless microphone information displaying apparatus and method thereof The wireless microphone information displaying apparatus comprise a plurality of wireless microphones having information respectively assigned thereto, a wireless microphone supporting device having a plurality of supporting portion for supporting the microphones, r... | 12/19/2006 |
| 7148810 | Evacuation systems providing enhanced operational control An evacuation system, which provides enhanced operational control to an operator. In an embodiment, each voice point module capable of playing evacuation messages is implemented as an addressable unit, and an operator can cause different messages to be played on dif... | 12/12/2006 |
| 7143649 | Sound characteristic measuring device, automatic sound field correcting device, sound characteristic measuring method and automatic sound field correcting method In order to measure a sound characteristic in a sound space, measurement sound is outputted to the sound space. Measurement sound data of a predetermined time period, which is prepared in advance, is divided into plural block periods, and plural block sound data are... | 12/05/2006 |
| 7130432 | Speaker mounting system and method A system and a method for mounting a speaker unit (12). The system (12) containing a surface mounting bracket (14) including at least one attaching feature (20) and a speaker unit (12). The speaker unit (12) comprises at lea... | 10/31/2006 |
| 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 |
| 7123728 | Speaker equalization tool A computer readable medium containing program instructions for controlling a parametric equalizer is provided. Generally, a computer readable code is provided for displaying a composite equalization curve, wherein the composite equalization curve is formed from at l... | 10/17/2006 |
| 7110558 | Systems and methods for automatically adjusting the volume of an audio source A system adjusts audio levels so as to maintain a constant perceived audio level at a user's location. The system includes a sensor (110) and an audio device (120). The sensor (110) receives a first audio signal, receives at least one data packe... | 09/19/2006 |
| 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 |
| 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 |
| 7088830 | Parametric ring emitter A sound emitting device for providing at least one new sonic or subsonic frequency as a by-product of emitting a waveform of at least two ultrasonic frequencies whose difference in value corresponds to the desired new sonic or subsonic frequency. The device includes... | 08/08/2006 |
| 7068795 | Public address system and method for an urban transit vehicle Apparatus and method for allowing an operator of a transit vehicle to make public address announcements to passengers internal and external to the vehicle. The safety of the vehicle and passengers is maintained through providing a hands-free directional microphone h... | 06/27/2006 |
