100results about How to "Meet the noise" patented technology

Systems, methods and devices related to detecting and transmitting images. Imaging system and devices, as well as methods of using such that are provided herein include flicker detection and/or correction; and/or built-in self test (170) associated with various analog circuitry in the imaging devices; and/or power reduction ability; and/or pixels with charge evacuation functionality; and/or parallel to serial conversion (190) unit and associated serial output interface (106); and/or other advanced functionality.

Methods, systems and apparatus are provided for sorting particles in a stream of a sample in a flow cytometer by producing from a stable sort having desirable sort characteristics multiple images of a portion of the stream; generating from the multiple images an averaged numerical reference standard representative of the stable sort; continuously collecting during the sorting multiple running images of the portion of the stream; generating from the multiple running images at least one numerical sample average representative of the sample sort of each collection of the multiple running images; and comparing each numerical sample average to the numerical reference standard and determining whether a sample average exhibits a deviation from the reference standard that requires an adjustment of the sort. The sort may then be adjusted to eliminate or reduce the deviation and maintain the stable sort of the reference histogram. A novel imaging apparatus may be employed in a flow cytometer performing this method.

A chopped Hall effect sensor topology includes a switched Hall plate, an amplifier responsive to an output of the switched Hall plate and a filter stage responsive to the output of the amplifier and including an anti-aliasing filter and a selective filter that is tuned to the modulation frequency. The switched Hall plate includes a Hall element and a Hall plate modulation circuit that modulates the Hall offset signal component or the magnetic signal component. In embodiments in which the Hall offset signal component is modulated by the switched Hall plate, the amplifier, if chopped, includes an even number of additional modulation circuits. In embodiments in which the magnetic signal component is modulated by the switched Hall plate, the amplifier contains an odd number of modulation circuits. The described topology provides a low noise, fast response time Hall effect sensor.

A vehicle includes a motor for driving wheels WH, an inverter to drive the motor, and a control device to perform PWM control of the inverter. The control device performs synchronous PWM control in a case where an electric current supplied to the motor by the inverter or torque generated in the motor is larger than a threshold value; and performs the synchronous PWM control or non-synchronous PWM control in a case where the electric current or the torque is smaller than the threshold value and sets carrier frequency or a pulse number of the PWM control to be higher than the case where the electric current or the torque is larger than the threshold value. Thereby, it is possible to provide a vehicle of achieving reduction of noise, reduction of cost and improvement of fuel consumption in a balanced manner.

Porous damping material (40) is attached to an entire inner circumference of the fan shroud (20) opposing to an end of a fan (4) and is exposed to opposing space without using conventional perforated metal. Accordingly, jet noise caused by strong swirl between the fan (4) and the fan shroud (20) can be damped by the damping material (40) and impulsive sound scarcely occurs. Thus, both of the impulsive sound and the jet noise can be effectively damped, thereby securely reducing noise. The pours member (401) constituting the porous damping material (40) is a die-molding product made by a die (150) having a cavity (153).

A semiconductor device with a TSV and a shelter is provided. The semiconductor device includes a substrate, a circuit area, at least a TSV and a shelter. The circuit area and the TSV are disposed on the substrate, and the TSV penetrates through the substrate. The shelter is disposed on the substrate and at least one part thereof is between the circuit area and the TSV in order to shelter EMI between the TSV and the circuit area. The novel structure prevents the circuits in the circuit area being affected by noise caused by TSV when TSV acts as a power pin.

A mechanical quantity measuring apparatus is provided which can make highly precise measurements and is not easily affected by noise even when it is supplied an electricity through electromagnetic induction or microwaves. At least a strain sensor and an amplifier, an analog/digital converter, a rectification/detection/modulation-demodulation circuit, and a communication control circuit are formed in one and the same silicon substrate. Or, the silicon substrate is also formed at its surface with a dummy resistor which has its longitudinal direction set in a particular crystal orientation and which, together with the strain sensor, forms a Wheatstone bridge. With this arrangement, even when a current flowing through the sensor is reduced, measured data is prevented from being buried in noise, allowing the sensor to operate on a small power and to measure a mechanical quantity with high precision even when it is supplied electricity through electromagnetic induction or microwaves.

A molded and shaped acoustical insulating vehicle panel having a dry-laid needled fibrous composite composed of a first portion of about 50 to 80 percent meltable binder fibers and about 20 to 50 percent stable fibers and having a second portion of about 20 to 50 percent meltable binder fibers and 50 to 80 percent of staple fibers. The meltable binder fibers are in a molded and resolidified state such that the resolidified binder fibers of the first portion form a substantially continuous, semi-impervious, densified skin integrally associated with and bonded to a surface of the first portion. The molded composite is in such a heat and pressure molded state that the composite has over a predominance of its area a density of from about 12 to 22 lbs./cubic foot (192 to 352 kg/cubic meter) and the panel is sufficiently rigid as to be self-supporting.

An active noise control system is provided which cancels a noise using a sound radiated from a speaker driven by an output from an adaptive notch filter. The system employs output signals from an adder or simulation cosine-wave and sine-wave signals, an error signal or an output signal from a microphone, and a compensated signal from the adder or a signal available for acoustically transferring an output from the adaptive notch filter to the microphone in accordance with initial transfer characteristics to update the filter coefficient of the adaptive notch filter. This configuration allows the system to operate with stability even when the acoustic transfer characteristics vary with time or under circumstances where there exists a significant amount of incoming external noises. The system also prevents overcompensation for a noise at the ears of a passenger in a vehicle, thereby proving an ideal noise reduction effect.

Large diameter axial Super Low Noise flow fans and commercial air cooled apparatuses incorporating such fans are provided. The large diameter axial flow fan is mounted on the air cooled apparatus for generating an axial air flow in the air cooled apparatus for accomplishing the cooling. The fan has a diameter of at least four feet. The fan has plurality of blades. Each blade includes a leading edge opposite a trailing edge. The entire of the leading edge of each of the blades is linear and forward swept, and each blade includes a metallic outer surface.

The invention regards a scheme for generating a probe noise signal to be used in an anti feedback system of an audio system. The audio system comprises e.g. a microphone for capturing an audio signal, an audio signal processor for adaptation of the audio signal and a receiver for generation of an audible signal. According to an embodiment of the invention, a noise signal is injected into the audio signal path between the microphone and the receiver and used for estimating acoustical feedback, the noise signal being generated by the following steps:

• • converting a digitized audio signal to the frequency domain, in order to obtain a series of magnitude and phase values,
  • changing the phase values such that the phase of the resulting signal becomes less correlated, preferably substantially un-correlated, to the original signal,
  • converting the magnitude and phase back to a time domain signal using the changed phase values.

The invention may e.g. be used in a hearing aid, a headset or a pair of headphones.

The invention discloses a novel in-line pump dedicated motor, and the motor comprises a motor base and internal fans. The periphery of a stator iron core is fixedly provided with a plurality of axialthrough cooling tubes on the motor base, and the cooling tubes are communicated with an air outgoing cover disposed at a shaft-extension end of a rotating shaft. A bearing device is installed in a bearing seat, and comprises a bearing bush and an oil slinger, wherein the bearing bush is disposed in the bearing seat. The bearing seat consists of a bearing upper seat and a bearing lower seat. The internal fans are symmetrically disposed on the rotating shaft between the bearing device and a rotor in a fixed manner. The bearing lower seat comprises separator plates which are fixed at left and right sides of the bearing seat body. The separator plates enable the cavity of the bearing seat to be divided into a left oil pool, a central oil pool and a right oil pool, wherein the left, central andright oil pools are communicated. The oil slinger sleeves the periphery of the bearing bush, and is located in the central oil pool of the cavity of the bearing seat. A non-shaft-extension end is provided with an external fan, and is provided with a curved-path fan cover. The motor provided by the invention improves the structure of the bearing seat, improves the self-lubricating effect of a bearing, is additionally provided with the curved-path fan cover, prolongs the propagation path of air, and reduces the noise.

A wind turbine (10) comprising at least one turbine (24), a generator (26) configured for converting torque into electrical power, and a controller (40) capable of comparing a wind turbine (10) acoustical profile and a wind turbine (10) power profile to determine a noise reduced operational condition, the controller (40) further being capable of controlling the wind turbine (10) to provide a rotor speed and the pitch angle of the turbine (24) corresponding to the noise reduced operational condition.

The invention provides a balance compensation cable for a high-speed elevator.The balance compensation cable comprises a compensation cable body, and the compensation cable body comprises at least one evenly distributed core and an outer wrapping layer wrapping the cores.The compensation cable body is flat, the cores are steel wire bundles or carbon fiber, and the outer wrapping layer comprises polyoxyethylene resin, plasticizer, stabilizer, a lubricating agent, a flame-retardant agent, accelerant, an adhesive, an anti-aging agent, a reinforcing agent and inorganic filler.The cores and the outer wrapping layer are poured together into a solid integrated element.The wide balance compensation cable for the elevator lowers operation noise, increases specific gravity of unit length, and has the advantage of being large in bearing load.The outer wrapping layer meets the requirements for softness, environment stress cracking resistance and heat resistance, elasticity is good, bending radius is small, and safety performance of the elevator is improved.

The present invention relates to a base design of cooling structure, which includes a base, and a shaft tube disposed on the base to support a spindle of an impeller to rotate therein. The base has at least a groove and the groove is located beyond an outer diameter; the groove design can be employed to effectively prevent the issue of contraction stress caused by difference of cooling time of temperature and to prevent a slanted shaft tube for supporting a stable operation of the spindle of the impeller, thereby avoiding the resulting run-out and noise, making vibration and noise test values of the product comply with a standard value range, reducing the defective rate of the product and prolonging the product lifespan.