An apparatus for changing a display output of an entertainment system, the apparatus comprising: a display that displays a first output; a detector that detects a hand placed proximae to the display; and a controller that is coupled to the display, the controller causing the display to display a second output in ...

A projecting screen that includes a multilayer, multiband, single stack device that selectively reflects light with wavelengths in plurality of narrow wavelength bands, and methods for making the screen. The multilayer, multiband, single stack device may be an etalon device. The multiple layers may be deposited on a...

An AM radio antenna circuit having a ferrite bar loop antenna comprises a resonating structure forming a balacned antenna circuit, a varavtor diode tuning structure presenting a controllable capacitance to said winding structure, a DC path including the winding structure coupled to the varactor constructed and arra...

Video processing for enhancing contrast includes detecting the ambient light levels on a display, performing local contrast enhancement processing to emphasize the luminance component based on the detected ambient light levels to provide a processed video signal, and presenting the processed video signal on the disp...

The invention relates features an acoutic waveguide and system for transmitting pressure wave energy produced by an transducer in a medium that propagates pressure wave energy. The wave energy system includes a tube defining a spiral shaped channel with a lenth of L. The tube has a first end an second end with the f...

N/A

An electro-acoustic transducer has an electro-magnetically driven moving dome and a phase plug having a body and a dome-interface surface, with a compression cavity formed between the dome and the dome-interface surface. The phase plug includes at least first and second annular slots beginning at the dome-interface ...

1. An automobile suspension element for a vehicle suspension_coupling a wheel assembly to a sprung mass, the suspension element_comprising: a first rotary motor; a second rotary motor; and a transmission coupled to the first and second rotary motors; wherein the transmission converts rotation of the first r...

A module for use in an acoustic enclosure, comprising, a closed three dimensional structure defining a cavity with an opening, a first passive radiator having a vibratile element having a first and a second surface and further having an intended direction of motion along a first axis, said first passive radiator mou...

An acoustic apparatus, including an acoustic driver, acoustically coupled to a pipe to radiate acoustic energy into the pipe. The pipe includes an elongated opening along at least a portion of the length of the pipe through which acoustic energy is radiated to the environment. The radiating is characterized by a vol...

An audio power amplifier includes a first and a second amplification unit each including a switching voltage amplifier an output filter a current compensator an inner current feedback loop feeding a measurement of current measured at the output inductor back to a summing input of the current compensator a voltage co...

A multi-axis fatigue testing device includes a multi-axis test fixture having a multiple input, multiple output mechanical linkage driven by a plurality of actuators and a controller operating each of the plurality of actuators in real time and in synchronization to produce user-defined multiple fatigue cycle prof...

A vehicle testing system includes a wheel plate constructed and arranged to support a vehicle wheel. A linear electromagnetic actuator has a moving magnet mechanically coupled to the wheel plate constructed and arranged to impart a controlled substantially vertical force to the wheel plate. A spring may be mechanic...

An audio device has passive radiators that are driven by acoustic drivers. The passive radiators are arranged so that the net mechanical vibration is minimized.

A surround audio system for a vehicle with a plurality of operating modes. The vehicle includes seating locations. The audio system includes a plurality of input channels including surround channels. The audio system further includes a plurality of operating modes. A first operating mode is characterized by substant...

An apparatus comprising an acoustic device comprising a waveguide having a soimd opening at one end facing a space, an audio source, an acoustic driver at another end of the waveguide, the acoustic driver facing a listening area, and structure supporting the acoustic device, the audio source, and the acoustic dr...

An acoustic waveguide system contains a trunk waveguide and a number of branch waveguides. The trunk waveguide section defines an interior passage and includes at least one open end. A number of branch waveguide sections define an interior passage and include a junction end and a terminal end, with the junction end ...

An apparatus includes an acoustic device comprising a waveguide having a sound opening at one end facing a space, an audio source, an acoustic drive at another end of the waveguide, the acoustic driver facing a listening area, and structure supporting the acoustic device, the audio source, end the acoustic driver, a...

A method comprising: receiving a first amount of light having a narrower spectrum, reflecting the narrower spectrum light from a reflective surfce on a color wheel of an image projector, and transimtting light having a broader spectrum, the broader spectrum light including a second amount of light haaving the narrow...

A system for operating a fuel cell comprises a fuel cell having an anode, an electrolyte and a cathode. An external power supply circuit connects the anode and cathode. There are a first supplier for supplying a fuel to the anode, a second supplier for supplying oxidizer to the cathode, and a controller for intermit...

Dynamic equalizing includes level sensing before a manually operated volume control and adjusting the frequency response in response to both the level sensing and the manually set volume control setting.

An electromagnetic actuator includes a stator assembly mounted to a center pole formed of material having high magnetic permeability and functions as a return path for the magnetic field generated when current is passed through coils in the stator assembly. When current is applied to one or more coils within the sta...

A method of starting an internal combustion engine, wherein the engine includes a plurality of cylinders each containing a piston which is mechanically connected to a crankshaft, and wherein the engine is configured to operate with a predefined normal firing order, the method comprising: selecting at a cylinder for...

A noise reducing headset has one or more of the following features: (a) pan of earcups each seated in a yoke assembly mechanically coupled by a hedband enclosing a flat spring formed with a slot that runs the length of the spring accommodating electrical wires electrically interconnecting electrical elements in the ...

A communication system for a vehicle is described. The communication system includes a microphone array having a plurality of microphones mounted within the vehicle for receiving acoustic signals and converting the acoustic signals to electrical signals. An antenna is mounted proximate to the microphone array. The ...

A loudspeaker system having an enclosure having a narrow opening or slot for radiating high frequency acoustic energy. The loudspeaker system has a cover member defining a slot between the cover member and a boundary of a listening space. The loudspeaker system may also include a fixed or adaptive equalizer for mo...

Methods and apparatus for manipulating a map in a navigation system are described. A navigation system includes a first control having a first function that orients a panning axis relative to a display in the navigation system. A second control includes a first function that moves the map along the panning axis. Th...

Audio electrical signals are controlled lo he provided lo a plurality of eleclroacoustical transducers of an array lo achieve directivity and acoustic volume characteristics that are varied with respect in a parameter associated with operation of the array, llie controlling of the signals results in a change in the ...

A convertible automobile sound system is responsive to the state of the convertible automobile top for providing equalization to speakers related to the state of the convertible top.

A line array loudspeaker, including a first plurality of acoustic drivers each acoustic driver comprising an axis, the first plurality of acoustic drivers arranged so that the axes of first plurality of acoustic drivers are coplanar in a first plane and so that a straight line intersects each axis at a same position...

A line array electroacoustical transducing system includes at least first and second line arrays detachably secured in electrical and mechanical coupling relationships. The assembly may be detachably secured to a base having an amplifier in electrical and mechanical coupling relationships.

A method and apparatus for increasing phase margin in a feedback circuit of an active noise reduction headphone. The method includes providing an acoustic block comprising an acoustic driver comprising a voice coil mechanically coupled along an attachment line to an acoustic energy radiating diaphragm, the acoustic ...

A method and apparatus for increasing phase margin in a feedback circuit of an active noise reduction headphone. The method includes providing an acoustic block comprising an acoustic driver comprising a voice coil mechanically coupled along an attachment line to an acoustic energy radiating diaphragm, the acoustic ...

An apparatus for generating low frequency acoustic signals in a vehicle having an instrument panel is described. The apparatus includes a baffle that is located at least partially within the instrument panel. An electroacoustical transducer is mechanically coupled to the baffle. The electroacoustical transducer gene...

Sound reproducing apparatus having at least a remotely controlled radio and left and right loudspeakers in a base enclosure comprising, a remote controller having at least manually selectable controls constructed and arranged to control volume and radio tuning, said base enclosure being free of at least manually ...

A vehicle sound system is constructed and arranged to establish a sound image at a desired location spaced from the sound source.

A method for a multi-zone audio communication network including at least one master device and a plurality of slave devices, comprising: receiving a message at the master device from a remote control or control buttons on the devices that includes a command; and transmitting the command to the one or more slave...

A media player facing has a device housing with a drawer and a façade. The outer surface of the facade and the outer surface of the device housing are aligned so that the façade outer surface and the device housing outer surface are substantially continuous when the drawer is closed.

An active suspension system for a motor vehicle, in which a controller has a first input and an output. The first input receives a roll command-signal generated in response to a turn executed by the vehicle. The output provides a control signal for causing a chassis of the vehicle to roll to an angle determined by t...

An actuator for an active suspension system includes an armature and a housing enclosing an interior. The interior has a volume that varies in response to movement of the armature. A wall of the housing forms a first aperture through which air passes in response to movement of the armature.

A method comprising driving an amplifier in a predefined manner, sensing a change in power delivered to a power input of the amplifier as a result of the predefined driving, and determining a value indicative of a state of connection of one or more speakers to an output of the amplifier, based on the sensed chan...

An audio system includes an enclosure having a transducer. The transducer creates a vibration in the enclosure in response to being driven by an audio signal having a frequency range. A cradle assembly mechanically couples a portable device to the enclosure through an isolator. A portion of the vibration is coupled ...

An earphone includes a first acoustic chamber including a reactive element and a resistive element in parallel, a second acoustic chamber separated from the first acoustic chamber by an acoustic transducer, and a housing to support the apparatus from the concha of a wearer"s ear and to extend the second acoustic cha...

A geographical field is displayed including indicia, representing respective items stored in a navigation system, that are displayed in positions that correspond to geographic relationships of the items on the geographic field. In response to a user manipulating a user interface control device, a visible featur...

A mobile navigation system includes a graphical display for presentation of map information. Map features are selected for presentation on a display. Characteristics for display are also selected. The characteristics for display include a scale for display that varies across the display. An image for display is gene...

The invention is directed to a display and method for conducting sound system design. The display is configured to simultaneously show a sound system model comprising both audio components and sound environment components, a plurality of parameters and a graphic representation of a calculated sound system performanc...

An automotive system provides an integrated user interface for control and communication functions in an automobile or other type of vehicle. The user interface supports voice enabled interactions, as well as other modes of interaction, such as manual interactions using controls such as dashboard or steering wheel m...

A portable audio system includes a housing. A docking cradle includes a connector that is electrically coupled to the electronic audio circuit. The docking cradle is mechanically coupled to the housing such that the docking cradle is capable of being rotated horizontally between an open position in which the connect...

A loudspeaker suspension structure has an inner circumferential border, and an outer circumferential border, and grooves each extending from the inner circumferential border to the outer circumferential border at an angle with respect to a normal to the inner circumferential border, a profile of a circumferential se...

A substrate injection molded to a surface of metal, wood, a wood-based product, or leather to form a composite, such that the composite has an acoustical region and a non-acoustical region, and the surface extends continuously from the acoustical region to the non-acoustical region is described. ...

A plate has a low birefringence and a retardation layer is characterized by a fast optical axis and a slow optical axis. The retardation layer is positioned with its fast optical axis at a rotation angle selected to reduce an s-polarized component of light passing through the retardation layer at a particular angle...

Vehicle audio systems including directional loudspeakers, particularly directional arrays. An exemplary audio system for a vehicle includes a plurality of audio channels. The vehicle includes a first passenger position and a second passenger position ahead of the first passenger position. The audio system includes a...

An active suspension system for a vehicle includes an active su^efisiorreiement mat is substantially rigidly attached to a frame of the vehicle such that a motion of an armature of the active suspension element is mechanically decoupled from a lateral motion of a wheel of the vehicle. A control rod is attached betwe...

A surround for supporting a diaphragm used to create acoustic waves includes a rib section extending away from the diaphragm and a membrane section that is supported by the rib section. The membrane section has a thickness in a direction substantially normal to opposing top and bottom surfaces of the membrane sectio...

In a dual-concentric knob, an inner knob acts as a solid economically functional knob for forces below a threshold and collapses into an outer knob for forces above the threshold. In.some examples the inner knob also acts as a push burton for forces below the threshold. A hand-operated control is mounted on a hub f...

An active suspension system for a vehicle including elements for developing and executing a trajectory plan responsive to the path on which the vehicle is traveling. The system may include a location system for locating the vehicle, and a system for retrieving a road profile corresponding to the vehicle location. ...

A procedure for slatting up a fuel cell syslcm lhal is disconnected from its primary load ami has both ils cathode and anode now lie ids tilled wild air includes initiating u l!cw of air through ihc cathode How licit! and rapidly displacing ihc air in Ihc amide flow field hy delivering a flow uf fresh hydrogen conta...

An active suspension system for a vehicle includes a first component, and a second component in communication with the first component using a network. The first component is configured to encrypt at least some of the data transmitted by the first component to the second component using the network. ...

Power is delivered from a power source in a head-mounted device to a separate accessory that is coupled to the head-mounted device. Power and signals are delivered on a common conductor that couples the head-mounted device to an accessory. One or both of the head-mounted device and the accessory are configured based...

In one aspect, in general, the invention teatures a metnod including a wireless system determining a frequency of active operation of a first wireless; system and communicating wirelessly on the second wireless system in the vicinity of the wireless communication on the first wireless system, the wireless communicat...

An active wheel suspension for suspending a wheel assembly from a sprung body of a wheeled vehicle, and adapted to permit a center of the wheel assembly to move relative to the sprung body through a jounce and rebound travel and defining a wheel center locus path relative to the body, the suspension including an act...

In response to a change in a circuit parameter of a converter delivering power to a load, the converter is operated in a mode in which additional power is supplied to the load by a capacitive element that is in parallel with the converter, the circuit parameter including a parameter other than input current. ...

An acoustic passive radiator that controls "rocking mode" vibration includes a diaphragm for radiating acoustic energy. The diaphragm has a perimeter portion and a central portion. The perimeter portion is thicker than the central portion. The passive radiator further includes a passive radiator suspension. The susp...

A method comprising providng, to a user of a control device, an indication of a value currently associated with a preset, and simultaneously providing an indication of a possible new value of the preset.

An earphone for a supra-aural noise reducing headphone, with a front cavity that includes a foam portion and an open passageway. The foam portion supplements the volumetric dimension of the passageway.

A method for actively suspending a real plant in a vehicle includes modifying control signal on the basis of a difference between a property of the real plant, as indicated by the response of the real plant to the control signal, and a property of a nominal plant.

A power supply includes a battery source supplying power and a voltage converter circuit. The voltage converter circuit converts the power to the input voltage supplied to other circuitry. The voltage converter circuit varies the input voltage in response to a load current drawn by the other circuitry from the power...

An electromagnetic transducer including a stator and an armature, the armature defining a first axis and being driven to ride between first and second couplers back and forth relative to the stator along the first axis. The second coupler is configured to permit movement of the armature along a second axis orthogona...

A power supply includes a battery source supplying power and a voltage converter circuit. The voltage converter circuit converts the power to the input voltage supplied to other circuitry. The voltage converter circuit varies the input voltage in response to a load current drawn by the other circuitry from the power...

Demodulation apparatus includes a transversal filter characterised by coefficients adjusted by a coefficient determiner responsive to a constant modulus error signal and variable mode error signal related to the output of a spectral mean frequency detector having its input coupled to the output of the transversal fi...

A multi-channel audio system including first combining circuitry, for combining a first spectral band of a first plurality channels to provide a first bass audio signal stream; second combining circuitry, for combining the first spectral band of a second plurality channels to provide a second bass audio sign...

Scan a plurality of broadcast signals, select and receive one of the scanned broadcast signals and determine parameters about the received broadcast signal. Assign a priority to the received broadcast signal based on the parameters, and store the parameters and priority in memory. Redetermine the parameters in prior...

An information display unit for an automobile includes a display screen and a user interlace presented on the display screen that simultaneously presents at least two display elements each depicting information relating to a different subsystem of the automobile (e.g., a navigational subsystem and an audio subsystem...

A transducer assembly for a vehicle is described. The transducer assembly includes an enclosure formed from an interior component of the vehicle. The enclosure includes a front section defining an aperture and a rear section defining a volume. The assembly also includes a baffle that is located within a periphery of...

An active noise reduction system using adaptive filters. A method of operation the active noise reduction system i ncludes smoothing a stream of leakage factors. The frequency of a noise reduction signal may be related to the engine speed of an engine associated with the system within which the active noise reductio...

An active noise reduction system using adaptive filters. A method of operation the active noise reduction system includes smoothing a stream of leakage factors. The frequency of a noise reduction signal may be related to the engine speed of an engine associated with the system within which the active noise reduction...

An automated sound system design device and a method for operating it. A computer is constructed and arranged to accept input of facility information signals and sound system preference signals requirements, and using a previously stored assemblage of component performance capability data signals to generate a sound...

A method for processing and transducing audio signals. An audio system has a first audio signal and a second audio signal that have amplitudes. A method for processing the audio signals includes dividing the first audio signal into a first spectral band signal and a second spectral band signal; scaling the first spe...

An apparatus includes a housing. A waveguide is located within the housing. The waveguide includes a first subsection that bends around a first axis and has a first cross-sectional area with an aspect ratio that is substantially different from unity. A second subsection bends around a second axis that is non-parall...

Adapting an audio response addresses perceptual effects of an interfering signal, such as of a residual ambient noise or other interference in an earpiece of a headphone. In one aspect, an input audio signal is presented substantially unmodified when it is at levels substantially above the interfering signal and is ...

An active noise reducing headphone has a noise reducing microphone (11) in a noise reducing circuit, an outside microphone, a signal input terminal (24) and an outside microphone (41) output terminal (SlB) and a switch (SI) for selectively coupling the headphone to one of. the signal input (SlA) and microphone outpu...

[00045]   An audio/video switchbox includes a housing and one or more jacks on the housing. Each jack is configured to be connected to an end of a signal cable. A logic and control controls operation of the switchbox. The switchbox is connectable to a video display so that video images from the switchbox can be pres...

A loudspeaker includes a horn including a first end panel, a second end panel, a first side panel, and a second side panel. Edges of at least the first and second side panels define a diffraction slot opening. The first and second side panels are each fabricated from a sheet of flexible material held in a stressed, ...

An audio system for processing two channels of audio input to provide more than two output channels. The input may be conventional stereo material or compressed and signal data. The audio processing includes separating the input signals into frequency bands and processing the frequency bands according to processes w...

A system for sensing the state of a display includes a display, a sensor proximate to said display configured to detect electromagnetic radiation generated by said display, at least one signal processing means configured to process a signal received from said sensor, adn wherein said at least one signal processing ...

A method comprising based on user preference information about digital works, selecting available digital works to be included in at least two different sequences of digital works to be performed, the different sequences being based on different aspects of the preference information, and enabling the different seque...

A loudspeaker enclosure is formed with fins that may be extended to support the enclosure on a surface and retracted into mating recesses to comprise a cosmetically appealing outer surface when the enclosure is suspended.

A multichannel electrical power amplifying system constructed and arranged to distribute electrical power of amount P to a total load coupled thereto. The system includes a plurality n of power amplifier channels, coupling the power amplifying system to a portion of the electrical load.  Each of the amplifier cha...

An electromechanical actuator in a vehicle suspension system includes a housing having a first section adapted to affix to a vehicle body and a second section adapted to affix to a vehicle wheel assembly suspended to the vehicle body, the first and second sections coupled to form a motor, electronics including a pow...

The invention features an audio system for a vehicle that includes an audio source. A controller modifies an audio signal from the audio source with one of a first and a seconi signal processing operation in response to a user input. The first signal processing operation configures the audio signal for listening ins...

A method for actively suspending a real plant in a vehicle includes modifying a control signal on the basis of a difference between a property of the real plant, as indicated by the response of the real plant to the control signal, and a property of a nominal plant.

An apparatus for reducing baffle vibration includes a baffle that is subject to vibration. A first transducer that is seated in the baffle includes a first diaphragm that is acoustically coupled to a listening area in a vehicle and also acoustically coupled to a cavity in the vehicle. A first input signal applied to...

Preserving an audio signal in an audio system includes selecting a first audio signal from a plurality of audio signals. The first audio signal is applied to a first transducer. Mix a portion of the first audio signal with a second audio signal from the plurality of audio signals to provide a mixed audio signa...

A method for receiving broadcast signals includes selecting a broadcast signal, and receiving selected broadcast signal. Determine parameters about the selected broadcast signal wherein the parameters are based on supplemental broadcast data. Choose a scan interval based on the parameters.

The performance of multimedia works is controlled based on indicated preferences of a user.

An acoustic waveguide system, having source of acoustic radiation and a source of opposing acoustic radiation. An acoustic waveguide has an open end and an interior. A first acoustic driver having a first radiating surface and a second radiating surface is arranged and constructed so that the first radiating surface...

An active noise reduction headset with active noise reduction and talk-through, and switching circuitry related thereto.

An acoustic device comprising: an acoustic driver (22), comprising a frustal shaped vibratile surface (24) defining a frustal shaped volume (25), said vibratile surface comprising an inner side (80') and an outer side (82'), said frustal shaped volume (25) characterized by an axis (20); a support structure (...

A method for processing audio signals, comprising: receiving a first channel audio signal;separating said first audio channel signal into a first channel first spectral portion and a first channel second spectral portion;a first processing, of said first channel signal first spectral portion, acc...

An audio system including a left channel, a right channel and a surround channel, the system comprising: a listening area (10), comprising a plurality of listening spaces (12,14,16); a first directional array (I2LR'), at a given position in a first of said listening spaces (12), which in use is local to the ...

Audio electrical signals are controlled to be provided to a plurality of electroacoustical transducers of an array to achieve directivity and acoustic volume characteristics that are varied with respect to a parameter associated with operation of the array. The controlling of the signals results in a change ...

A ported electroacoustical device uses the action of the port to provide cooling airflow across a heat producing device. The device includes a loudspeaker enclosure including a first acoustic port, and an acoustic driver, mounted in the loudspeaker enclosure. The device also includes a heat producing device....

Certain aspects provide methods and apparatus for recovering audio quality of voice when processing signals associated with a wearable audio output device. A method that may be performed includes receiving, by an in-ear microphone acoustically coupled to an environment inside an ear canal of a user, an audio signal ...

An open-ear headphone with an acoustic module that is configured to be located at least in part in a concha of an outer ear of a user. The acoustic module includes an acoustic transducer, and a sound-emitting opening that is configured to emit sound produced by the acoustic transducer. A body is coupled to the acous...