Abstract: Audio and haptic signal processing systems and methods are provided. There is provided a method for haptic drive signal generation. The method comprises receiving an input audio signal for driving an audio speaker. The method further comprises deriving, from the audio signal, data components indicative of behaviour of the audio speaker when being driven by the input audio signal, each data component being associated with a respective frequency range. The method further comprises determining a haptic drive component from each data component. A gain is selected to provide to each of the haptic drive components, the gain being selected for each respective frequency range. Each selected gain is applied to the respective haptic drive component to produce gain adjusted haptic drive components.

Abstract: An apparatus comprising a rack having a row of shelves, each shelf supporting an electronics circuit board, each one of the circuit boards being manually removable from the shelve supporting the one of the circuit boards and having a local heat source thereon. The apparatus also comprises a cooler attached to the rack and being able to circulate a cooling fluid around a channel forming a closed loop. The apparatus further comprises a plurality of heat conduits, each heat conduit being located over a corresponding one of the circuit boards and forming a path to transport heat from the local heat source of the corresponding one of the circuit boards to the cooler. Each heat conduit is configured to be manually detachable from the cooler or the circuit board, without breaking a circulation pathway of the fluid through the cooler.

Abstract: An apparatus comprising a rack having a row of shelves, each shelf supporting an electronics circuit board, each one of the circuit boards being manually removable from the shelve supporting the one of the circuit boards and having a local heat source thereon. The apparatus also comprises a cooler attached to the rack and being able to circulate a cooling fluid around a channel forming a closed loop. The apparatus further comprises a plurality of heat conduits, each heat conduit being located over a corresponding one of the circuit boards and forming a path to transport heat from the local heat source of the corresponding one of the circuit boards to the cooler. Each heat conduit is configured to be manually detachable from the cooler or the circuit board, without breaking a circulation pathway of the fluid through the cooler.

Abstract: An apparatus comprising a rack having one or more shelves, a plurality of electronics circuit boards and heat conduits and a cooler. Each board is held by one of the one or more shelves, some of the boards having a localized heat source thereon. Each heat conduit forms a heat conducting path over and adjacent to a particular one of the boards from a region adjacent to the heat source thereon to a connection zone, the zone being remote from the heat source. The cooler is located on a side of the rack and coupled to the zones such that heat is transferable from the paths to the cooler. The cooler is configured to flow a cooling fluid therein to cool localized thermal interfaces at the cooler, each interface being adjacent to and at a corresponding one of the zones.

Abstract: A method is provided for cooling electrical equipment located in distinct regions in a cabinet. A first air flow is provided to a first region in the cabinet. A second air flow is provided to a second region in the cabinet. The temperature of the first and second air flows provided to the first and second regions is substantially equalized to provide similar cooling characteristics within the first and second regions. The equalization is accomplished via a heat exchanger arrangement that may be an active or passive system.

Abstract: A range hood positioned above a cooking range employs a continuous heat sensor system which includes twisted wires which are separated from one another by an insulator which is formed of a material which melts at a predetermined temperature. The wires carry a supervisory current which also flows through an actuator, which may be an electrified system for cutting a tension wire. An indicator lamp, such as an LED, which may have a series resistor associated therewith, limits the current through the actuator to a level below the activation threshold of the actuator.

Abstract: A range hood positioned above a cooking range employs a continuous heat sensor system which includes twisted wires which are separated from one another by an insulator which is formed of a material which melts at a predetermined temperature. The wires carry a supervisory current which is monitored continuously. When the magnitude of the current is increased, such as by the creation of a short-circuit condition as would be caused by the presence of a fire, an actuation signal is issued to an actuator, which may include an explosive squib. The explosive squib releases a tension wire which holds a discharge valve in a closed position, permitting a fire suppressant fluid to be discharged from a supply tank. Monitor circuitry ensures that open-circuit or short-circuit faults do not disable the functioning of the actuation system. Multi-condition fault indicators alert the user visually and audibly of system faults.

Abstract: A range hood positioned above a cooking range employs a continuous heat sensor system which includes twisted wires which are separated from one another by an insulator which is formed of a material which melts at a predetermined temperature. The wires carry a supervisory current which also flows through an actuator, which may be an electrified system for cutting a tension wire. An indicator lamp, such as an LED, which may have a series resistor associated therewith, limits the current through the actuator to a level below the activation threshold of the actuator.

Abstract: A check system for a chemical fire extinguisher utilizes a normally-closed check valve to prevent escape of pressurized chemical during periodic maintenance of a pressure monitoring system, such as a pressure gauge. An actuator member which is disposed within the flow channel of the fire extinguisher system is used to apply a force to the check system whereby a normally-closed check valve is urged to its open state. This open state establishes communication between the interior of the pressurized tank and the pressure monitoring system. Removal, or loosening, of a coupler, or union, which secures the pressure monitoring system to the chemical tank, permits the check valve to return to its normally-closed state. Thus, the pressure monitoring system can be removed and serviced periodically without requiring the pressurized tank to be emptied.