168results about How to "Noise is generated" patented technology

A cooling method and system is disclosed which utilizes vortex tubes to generate and direct cold air over heat-generating components of an electronic system.

An image sensor includes a plurality of pixels, a plurality of sense circuits, and a count circuit. Each sense circuit is configured to read out electrical signals from at least one pixel associated with the sense circuit in order to generate data representing whether or not photons have been received by the sense circuit. The count circuit is in communication with a sense circuit selected from the plurality of sense circuits. The count circuit is configured to provide integration results for the pixels associated with the sense circuits based on the data received from the sense circuits.

A hinge unit includes a coupler plate formed with first and second coupler holes; first and second axles extending rotatably through the coupler holes in the coupler plate and formed with first and second engaging grooves corresponding to each other; a driving slide block disposed between the first and second axles, having first and second contact surfaces formed with first and second engagement ribs in engagement with the first and the second engaging grooves such that the slide block is movable along axes of the axles; and a positioning plate formed with first and second position holes permitting extension of the first and second axles, thereby restricting a movable range of the slide block between the coupler plate and the positioning plate. Movement of the slide block along the axes of the axles results in simultaneous rotation of the axles in directions opposite to each other.

A pump assembly for a dental cleaning appliance includes a fluid chamber, a piston, and a drive. Magnets, connected respectively to the piston and the drive, enable the drive to couple to the piston and move it within the fluid chamber to draw fluid into the fluid chamber. A stop prevents the piston from being pulled beyond a stop position so that through continued actuation of the drive the magnets separate to allow a spring to push the piston away from the stop position to urge a burst of fluid from the fluid chamber.

A vehicular refrigeration cycle apparatus where, at the time of startup before starting the operation of a compressor, the speed of a condenser-use blower which blows outside air toward the condenser is increased in accordance with the air-conditioning load. Due to this, the operating noise of the condenser-use blower familiar to the users becomes masking noise helping to prevent the operating noise of the compressor from being heard by the user and the unfamiliar operating noise of the compressor can be kept from being heard by the user.

A digital processor for use in a conveyor belt rip detector, which provides excitation signals at a selected frequency to inverted and noninverted sensor loops on a conveyor belt and then, detects corresponding received signals from the sensor loops. The digital processor then performs FFTs on the corresponding received signals to provide respective received signal frequency spectrums. Next magnitude and phase values of the selected frequency in the respective received signal frequency spectrums are used to determine a qualitative state of the sensor loops. The selected frequency has a lowest detected ambient noise level, and the magnitude value is a normalized magnitude value.

A centrifugal fan includes a scroll casing having first and second flat base walls, and a circumferential side wall. An air inlet is formed on a center portion of the first base wall and an exhaust port is formed on the circumferential side wall. An airflow correction mechanism that forms smooth airflow when an impeller rotates is provided. The mechanism has an annular rib that is formed on the inside surface of the first base wall so as to be jutted to the side of the second base wall and to be concentric with the rotating shaft, and a recess portion that is formed on every blade of the impeller so that the annular rib is inserted therein with a predetermined gap. The annular rib and the recess portion are configured to change the direction of airflow directed to the air inlet back to a space between the blades.

There are provided a split outer ring which can suppress the reduction in durability and which can suppress largely the generation of noise or vibration which is caused in association with the passage of rolling elements over a mating surface and a split rolling bearing which employs the same outer ring.

A split outer ring 2 according to the invention has first and second split outer ring members 5, 6 which are formed into a cylindrical shape by being butted against each other at circumferential end portions. First flat plane portions 7 and a V-shaped recess portion 8 which is recessed in a circumferential direction are formed at one end portion 5a of the circumferential end portions which are butted against each other. Secondary flat plane portions 9 which are to be brought into abutment with the first flat plane portions 7 and a projecting portion 10 which projects in the circumferential direction from the second flat plane portion 9 so as to be introduced into the recess portion 8 are formed at an end portion 6a which is to be butted against the end portion 5a. A space S is formed between the recess portion 8 and the projecting portion 10 so as to avoid a contact between a bottom portion 8b of the recess portion 8 and a vertex portion 10b of the projecting portion 10.

A method is provided for generating noise in an interior and exterior of a motor vehicle in which a control unit is provided which can be activated and which is operatively connected to a noise generator. The noise generator is connected to at least one noise emitting device (3). The noise emitting device (3) is mounted underneath a hood of the motor vehicle, and is connected to the vehicle interior via at least one hose with at least one sound transmitting element. Sound waves are extracted from the noise emitting device (3) and are transmitted into the vehicle interior.

To enable the reduction in working efforts by hand by performing control a drying operation by appropriately selecting dry conditions depending on the connection mode of the cooling device, and removal of moisture and the like without fail. The thermal analysis system uses a heater and a cooling device to raise and decrease the temperature inside the purge box. In the drying method for the thermal analysis system, the drying operation is performed by: previously setting dry conditions depending on the connection mode of the cooling device; starting control of an opening time dry process upon activation of the thermal analysis system; supplying a predetermined amount of dry gas into the purge box in accordance with the dry conditions corresponding to the selected connection mode of the cooling device with the cooling device kept off; and making the temperature control module control the temperature of the dry gas.

A method and system for utilizing information content in speech and a transition hangover between speech and noise to generate comfort noise on the decoder side. This adaptation to noise may be accomplished using various algorithms of estimating the spectrum of color noise. According to an embodiment of the present invention, an adaptation algorithm may be implemented that adapts, with time, rather than a block based algorithm to prevent the repeated generation of artifacts present in the block that are being adapting to. The method and system of the present invention generates comfort noise in the absence of silent insertion descriptions containing spectrum information thereby saving bandwidth and generating colored comfort noise that reflects the spectrum of the actual noise.

The present invention provides a linear motor, wherein, a coil is fastened on a mass block that is suspended inside a housing, a first magnet and a second magnet that have opposite magnetic poles are symmetrically disposed at an upper side and at a lower side relative to the coil in the middle and positioned parallel to the centric plane of the coil, by arranging an upper magnetic steel and a lower magnetic steel at an upper side and at a lower side relative to the mass block in the middle and parallel to the mass block. In the linear motor of the present invention, the design route that utilizes coil motion to drive mass block motion is different from the traditional route that utilizes magnet motion to drive mass block motion. When the coil moves to either of the two lateral sides of the housing, both the first magnet and the second magnet simultaneously generate forces along a vertical direction of the housing, and as the first magnet and the second magnet having opposite magnetic poles are symmetrically disposed on both sides of the coil, the electromagnetic forces generated by the two magnets are equal in magnitude and opposite in direction, thus being counterbalanced with each other in the vertical direction, so as to ensure that the coil only moves back and forth in a horizontal direction, without generating vibration in a vertical direction, therefore, no noise related to vertical vibration is caused.

A noise control system for a ducted rotor assembly, the ducted rotor assembly including a hub, a duct, and two or more blades coupled to the hub and supported by the duct. The noise control system including a microphone configured to receive a sound input generated by the ducted rotor assembly, the microphone configured for association with the hub; a speaker unit configured to generate a cancellation noise, the speaker configured for association with the hub; and a controller operably connected to the microphone and the speaker unit, the controller configured to selectively adjust harmonics of the cancellation noise to reduce an acoustic signature of the ducted rotor assembly. In another aspect, there is provided a rotorcraft with a ducted rotor assembly in a tail portion including a noise control system. In a third aspect, there is a method of reducing an acoustic signature of a ducted rotor assembly.

A foot assembly is adapted to be removably attached to the elbow of a sled-type leg of a piece of furniture that is adapted to be supported upon a surface. The furniture-foot assembly includes a body defining a hollow interior adapted to removably receive the elbow of the leg and a bottom exterior portion. A glide is adapted to be removably mounted to the bottom exterior portion of the body and supported upon the surface for gliding movement of the furniture-foot assembly relative to the surface.

An MRI apparatus provided with a support panel on which a subject is placed, the MRI apparatus including a noise cancelling unit movably installed at the support panel in a longitudinal direction of the support panel and configured to output a sound wave to cancel noise that reaches a target position, and a controller configured to control the noise cancelling unit to be moved to a target position and output the sound wave to cancel the noise.