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26748 results about "Microphone" patented technology

A microphone, colloquially named mic or mike (/maɪk/), is a device – a transducer – that converts sound into an electrical signal. Microphones are used in many applications such as telephones, hearing aids, public address systems for concert halls and public events, motion picture production, live and recorded audio engineering, sound recording, two-way radios, megaphones, radio and television broadcasting, and in computers for recording voice, speech recognition, VoIP, and for non-acoustic purposes such as ultrasonic sensors or knock sensors.

Use of online messaging to facilitate selection of participants in game play

A method and system facilitating selection of participants in multiplayer online electronic games. The method provides an efficient procedure for players to host and join new instances of multiplayer online electronic games, as well as providing a scheme that enables players to join multiplayer online electronic games that are already in progress. The method is implemented through a gaming utility that runs on each player's electronic device (e.g. PC) and interacts behind the scenes with an online messaging service. Player hosts are enabled to select players from a list of contacts provided by the online messaging service who they want to invite to join a chat session. A selected multiplayer online electronic game is selectively launched on all of the player's computers through a single command issued by the host. Additionally, the gaming utility provides players with a list of existing chat sessions being hosted by other players so as to enable the players to join multiplayer online electronic games that are already in progress. The system includes a plurality of electronic devices linked in communication across a communications network, such as a LAN or the Internet. Each electronic device is operatively coupled to a headset having a pair of headphones and a microphone. The headset is worn by a player, enabling the players to verbally communicate with others in a verbal chat session.
Owner:MICROSOFT TECH LICENSING LLC

Variable gain active noise canceling system with improved residual noise sensing

InactiveUS6118878AReduce the possibilityCancellation system retains its effectiveness across its bandwidthNoise generationSound producing devicesInstabilityEngineering
An active noise cancellation system includes a series of features for more effective cancellation, greater reliability, and improved stability. A particular feature adapted for headset systems includes locating a residual microphone radially offset from the center of a sound generator to detect a signal more similar to that incident upon the eardrum of the user. In addition, an open back headset design includes perforations on the side of the headset instead of the back, so that the perforations are less susceptible to inadvertent blockage. The system also includes a mechanism for detecting changes in the acoustic characteristics of the environment that may be caused, for example, by pressure exerted upon the earpieces, and that may destabilize the cancellation system. The system automatically responds to such changes, for example, by reducing the gain or the frequency response of the system to preserve stability. The system further includes other methods for detecting imminent instability and compensating, such as detecting the onset of signals within enhancement frequencies characteristic of the onset of instability, and adjusting the gain or frequency response of the system or suppressing the enhanced signals. The system further includes a mechanism for conserving battery life by turning the system off when sound levels are low, or adjusting the power supply to the system to correspond to the current power requirements of the system.
Owner:NOISE CANCELLATION TECH

Digital security multimedia sensor

A fully digital camera system provides high-resolution still image and streaming video signals via a network to a centralized, server supported security and surveillance system. The digital camera for collects an image from one or more image transducers, compressing the image and sending the compressed digital image signal to a receiving station over a digital network. A plurality of image transducers or sensors may be included in a single camera unit, providing array imaging such as full 360 degree panoramic imaging, universal or spherical imaging and field imaging by stacking or arranging the sensors in an array. The multiple images are then compressed and merged at the camera in the desired format to permit transmission of the least amount of data to accomplish the desired image transmission. The camera also employs, or connects to, a variety of sensors other than the traditional image sensor. Sensors for fire, smoke, sound, glass breakage, motion, panic buttons, and the like, may be embedded in or connected to the camera. Data captured by these sensors may be digitized, compressed, and networked to detect notable conditions. An internal microphone and associated signal processing system may be equipped with suitable signal processing algorithms for the purpose of detecting suitable acoustic events and their location. In addition, the camera is equipped with a pair of externally accessible terminals where an external sensor may be connected. In addition, the camera may be equipped with a short-range receiver that may detect the activation of a wireless ‘panic button’ carried by facility personnel. This ‘panic button’ may employ infrared, radio frequency (RF), ultrasonic, or other suitable methods to activate the camera's receiver.
Owner:PR NEWSWIRE
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