A method of automatically generating a calibration file for a card handling device comprises automatically generating a calibration file stored in memory of a main control system for a card handling device. Automatically generating the calibration file comprises identifying at least one parameter associated with a rank area around a rank of at least a portion of the card, identifying at least one parameter associated with a suit area around a suit of the at least a portion of the card, and storing the at least one parameter associated with the rank area and the at least one parameter associated with the suit area in the calibration file. Additionally, a method of automatically generating deck libraries for one or more decks of cards comprises automatically generating a plurality of master images for the cards of the first deck type using the parameters from the calibration file.

A geography game for learning geography and geographic information is disclosed that includes maps, scoresheets, lists of facts, and rules and instructions used to guide players on how to effectively use edible food items, such as chips, to learn geography through a fun and entertaining platform. The game provides marketing value to chip manufacturers and variations of the game add even more value by creating excitement and longevity. In one implementation, the edible chip is a triangular corn tortilla chip.

A target may allow target practice and/or simulate the shape of one or more animals. In various implementations, a target may include a target body and/or stand. The target body may be capable of receiving shots from arrows and/or ammunition. A target body may include a first aiming zone and a second aiming zone on an opposing surface. In some implementations, the first aiming zone and/or the second aiming zone may be off center. The orientation of the target body may be altered to select an aiming zone of the target body based upon user preference, in some implementations. The overlay may have shape similar to a predetermined animal. The overlay may be replaceable. The stand may support the target body. In various implementations, an overlay may be coupled to the target body and/or stand.

A method and system for suspending a target above a surface that provides for supporting a support member above the surface. A hanger is used to suspend a target from the support member. When the target is hanging from the support member, it is induced into an angle so that its top portion is closer to a shooter. When the target is struck by an incoming projectile, it is allowed to pivot downward from its initial position and the target is also restrained from rotating about the axis of suspension.

An outer plastic tube has water connections through the wall into an annular space defined by an O-ring spacer-gasket positioned between the wall and the perimeter margin of an inner cylinder rolled from a single-layer of sheet metal. A metal drainpipe with a removable bullet-shape at one end is forced through the cylinder to expand it and to thereby compress the gasket sealing the annular space. Thermal contact conductance is increased by the compressive force of water pressure. Water flow through the heat exchanger is both annular and turbulent to optimize heat transfer.

A heat exchanger may include at least one fluid passageway adjacent a heat transfer plate and a plurality of heat transfer elements positioned in the at least one fluid passageway and joined with the heat transfer plate. The heat transfer elements may be positioned with first spacings therebetween at an inlet end of the at least one fluid passageway. The heat transfer elements may be positioned with second spacings therebetween at an outlet end of the at least one fluid passageway. The first spacings may be smaller than the second spacings.

A heat exchange assembly includes an upper cover panel, a lower cover panel, a plurality of stacked plate assemblies, and a plurality of fins interposed between the plurality of plate assemblies. Each of the plurality of plate assemblies forms a flow passage for receiving a coolant. A continuous flow path extends through the heat exchange assembly. The flow path is in fluid communication with the flow passage of each of the plates and configured to convey air from each of the flow passages to an environment separate from the heat exchanger.

The present application relates to a system for dynamic control of the operation of a heat exchanger, the system comprising a heat exchanger, a plurality of injector arrangements, a local sensor arrangement, and a controller, wherein the local sensor arrangement comprises a plurality of local temperature sensors being arranged to measure temperature values; and wherein the controller is arranged to determine a difference between the measured temperature values and is further arranged to communicate with the valves of the plurality of injector arrangements to adjust the local amount of first fluid supplied by at least one of the injector arrangements in order to even out the determined difference. The application also relates to a method for the dynamic control of the operation of a heat exchanger in such a system.

The invention relates to a device for cooling hot gases generated by an internal arc in high voltage metal-enclosed switchgear and controlgear or prefabricated high voltage/low voltage stations. This device comprises a metal foam cooling filter having a honeycomb structure.

A wind turbine with a tower; a nacelle supported by said tower; at least one unit to be cooled and arranged in the tower or the nacelle; a tower mounted heat exchange structure arranged outside the nacelle and tower; and a circuit facilitating a flow of a fluid medium between the at least one unit and the heat exchange structure. To improve thermal convection with the ambient space, the heat exchange structure comprises a set of panels mutually angled and extending outwards from the tower such that a flow of ambient air can pass transversely trough the panels and thereby cool the unit.

A heat exchanger for a battery has fluid-carrying panels and defines a multi-sided enclosure for enclosing at least two sides of the battery. The heat exchanger has first and second fluid-carrying panels defining first and second flow channels, where the first and second fluid-carrying panels are arranged at an angle to another. The heat exchanger may also include a third fluid-carrying panel defining a third flow channel, and being arranged at an angle to the second fluid-carrying panel. The heat exchanger has first and second plates sealingly joined together along their peripheries and defining a fluid flow passageway between their central fluid flow areas. The second plate may be compliant, its central fluid flow area being deformable away from the central fluid flow area of the first plate in response to a pressure of a fluid inside the fluid flow passageway.

The present document discloses a plate type heat exchanger for an oil cooler, comprising at least two heat exchanger members, each enclosing a respective first cavity (C1), at least one inlet port (20, 22), for feeding a medium to the first cavities and at least one output port (21, 23) for extracting the medium from the first cavities (C1); and at least one mounting member (13, 14), which is attached to an outside of an outermost one, as seen in a stacking direction (Z), of the heat exchanger members. A second cavity (C2) is formed between the at least two heat exchanger members. A medium present in the second cavity (C2) is isolated from a medium present in the first cavities (C1). A reinforcement plate (30, 31) is located on an inside of the outermost one of the heat exchanger members, and at least partially overlapping the mounting member (13, 14).

A heat exchanger system comprises a first heat exchanger, a second heat exchanger, a mixer, and a third heat exchanger. A first working fluid flow path connects the first working fluid outlet port and the first mixer inlet port, a second working fluid flow path connects the second working fluid outlet port and the second mixer inlet port, and a third working fluid flow path connects the mixer outlet and the third inlet port.

Generally discussed herein are devices and methods for thermal management of a component. An apparatus can include a phase change material substantially at a phase transition temperature of the phase change material, a component near, on, or at least partially in the phase change material, and a heat removal device to transfer heat energy away from the phase change material and maintain the phase change material substantially at the phase transition temperature.

A Rack Information Handling System (RIHS) has a liquid cooling subsystem that provides cooling liquid to liquid cooled (LC) nodes received in chassis-receiving bays of a rack. Leak collection structures are positioned to receive cooling liquid that leaks from the liquid cooling subsystem. Liquid sensors detect a presence of leaked cooling liquid in the leak collection structures. A leak detection subsystem responds to a detected presence of liquid by providing a leak indication. In one or more embodiments, the liquid cooling subsystem has a liquid rail formed by more than one rack interconnections vertically aligned in a rear section of the rack that are connected by modular rail conduits for node-to-node fluid transfer. The leak collection structures include a pipe cover received over at least one modular rail conduit. A liquid cavity of each pipe cover spills over into another lower pipe cover at a rate that can be correlated to severity of the leak.

An air conditioning system of a motor vehicle with a refrigerant circuit for operation in a refrigerator mode and a heat pump mode. The refrigerant circuit includes a primary circuit with a compressor, a heat exchanger for heat transfer between the refrigerant and the surroundings, an expansion element and a heat exchanger for heat transfer from the intake air being conditioned for the passenger compartment to the refrigerant, and a first flow path. The flow path extends from a branching point between the compressor and the heat exchanger to an opening and includes a heat exchanger for heat transfer from the refrigerant to the intake air being conditioned for the passenger compartment. The heat exchanger is situated in a flow direction of intake air of the passenger compartment after the heat exchanger.

Disclosed is a heat exchanger including: a heat exchanger body; a gas inlet for introducing exhaust gas into the heat exchanger body; a coolant inlet for introducing a coolant into the heat exchanger body; a gas outlet for discharging the exhaust gas that is cooled by heat exchange with the coolant; and a coolant outlet for discharging the coolant that completes heat exchange with the exhaust gas. In this case, the heat exchanger body includes: a laminated tube core formed by laminating a plurality of gas channels side by side; a housing formed so as to enclose the laminated tube core except for opposite ends thereof; and a wave fin plate integrally provided with a plurality of wave fins and arranged within each of the gas channels, wherein each of the wave fins includes a fixed pitch section, and a variable pitch section.

What is disclosed is a heat exchanger including: a core including a plurality of core plates, first and second passages, and a vertical passage; a base plate including a passage port; and a distance plate; wherein the first vertical passage and the passage port are arranged apart from each other in a direction orthogonal to a stacking direction of the core plates, and wherein the distance plate includes a bottom wall part and a swelling part, the bottom wall part being a thin plate-shaped and being joined to an upper surface of the base plate, the swelling part swelling up in the stacking direction from the bottom wall part so as to surround a circumference of a communication passage which communicates the first vertical passage with the passage port and being joined to a lowermost surface of the core in a flange part of a tip of the swelling part.

A high-efficiency plate type heat exchanger increases a heat-exchanging efficiency with an exhaust gas by connecting unit fluidized beds formed with stacked heat exchanging plates to each other in up and down directions, and elongating a flow path of circulating water to be greater than or equal to two passes (2-PASS). The heat exchanger retrieves heat of an exhaust gas by increasing a flow amount of circulating water of a portion close to a burner while a circulation path is elongated as described above. In addition, the high-efficiency plate type heat exchanger increases efficiency thereof by inserting a baffle plate having distribution holes between unit fluidized beds, controlling a flow of an exhaust gas while reducing an exhaust speed of the exhaust gas using heat exchanging fins of the baffle plate, absorbing heat of the exhaust gas, and effectively using a heat transfer area.

A heat exchange device includes a housing, a heat exchange module, and a piezoelectric module. Isolated inner and outer circulation chambers are formed in the housing. The heat exchange module in the housing includes a stack of separated plates parallel to each other. An inner channel communicated with the inner circulation chamber and an outer channel communicated with the outer circulation chamber are defined respectively by both sides of one of the plates and the other adjacent plates. The piezoelectric module in the housing includes a piezoelectric chip, and first and second heat exchange sides thermally coupled to the piezoelectric chip. The first heat exchange side is located in the inner circulation chamber and the second heat exchange side is located in the outer circulation chamber, so that heat can be transferred between the inner and outer circulation chambers via the piezoelectric chip.

Various methods and systems are provided for cryogenic heat transfer by nanoporous surfaces. In one embodiment, among others, a system includes a cryogenic fluid in a flow path of the system; and a system component in the flow path that includes a nanoporous surface layer in contact with the cryogenic fluid. In another embodiment, a method includes providing a cryogenic fluid; and initiating chilldown of a cryogenic system by directing the cryogenic fluid across a nanoporous surface layer disposed on a surface of a system component.

An adjustable refrigerant distribution device and a heat exchanger having same. The heat exchanger comprises: first and second collecting pipes; a heat exchanger core body; and a refrigerant distribution device, the refrigerant distribution device comprises a first distribution pipe, a first inlet pipe and a first drive assembly. The pipe wall of the first distribution pipe is provided with a first distribution hole. The first distribution pipe is inserted into at least one of the first and the second collecting pipes. The first inlet pipe is located outside at least one collecting pipe and is in communication with the first distribution pipe, and the first drive assembly drives the first distribution pipe to move relative to at least one collecting pipe. The distribution pipe of the refrigerant distribution device and the heat exchanger can translate along the axial direction, thereby adjusting refrigerant distribution so as to satisfy different distribution requirements.

In a cooled component system, a heat exchanger mounted on a surface of the industrial component is housed in an isolated access compartment adjacent to but separated from the primary compartment containing the industrial component. Housing the heat exchanger in a separately accessible compartment permits access to the heat exchanger for cleaning or other purposes without having to shut down the industrial component being cooled. A means for moving a cooling media over the surface a the heat exchanger might also be included to maximize heat exchange.

A digital-to-analog converter (DAC) and a high-voltage tolerance circuit are provided. The DAC includes a high-voltage tolerance circuit. The high-voltage tolerance circuit is configured to generate a reference voltage, and select the reference voltage or a first power-source voltage to control the node voltage of each branch of an operational amplifier circuit of the high-voltage tolerance circuit according the logical signal level of an input signal.

Typically, complex systems require a separate and expensive equalizer at the output of an analog-to-digital converter (ADC). Rather than providing a separate equalizer, the effective Signal Transfer Function (STF) of a Multi-stAge noise SHaping (MASH) ADC can be modified by leveraging available digital filtering hardware necessary for quantization noise cancellation. The modification can involves adding calculations in the software previously provided for computing digital quantization noise cancellation filter coefficients, where the calculations are added to take into account equalization as well. As a result, the signal transfer function can be modified to meet ADC or system-level signal-chain specifications without additional equalization hardware. The method is especially attractive for high-speed applications where magnitude and phase responses are more challenging to meet.

The disclosure relates to a circuit for stabilizing a digital-to-analog converter reference voltage. One example embodiment is a circuit for stabilizing a voltage on a reference node. The circuit includes a digital-to-analog converter that includes an array of capacitors and arranged for: receiving an input voltage via an input node, receiving a voltage via a reference node and a digital-to-analog code via a controller node, and outputting a digital-to-analog output voltage. The circuit also includes a capacitive network on the reference node comprising a fixed capacitor arranged to be pre-charged to an external reference voltage and a variable capacitor arranged to be pre-charged to an external auxiliary voltage. Further, the circuit includes a measurement block. In addition, the circuit includes a calibration block arranged for determining an updated setting of the variable capacitor based on the digital-to-analog code and the measured voltage on the reference node.

The invention provides a process comprising: a crystallization step of concentrating and crystallizing the ammonium salt of sulfuric acid from an aqueous solution that contains the ammonium salt of sulfuric acid; a solid-liquid separation step of solid-liquid separating the ammonium salt of sulfuric acid obtained in the crystallization step, and a crystallization mother liquid recycling step of recycling a crystallization mother liquid obtained in the solid-liquid separation step to at least one step selected from the crystallization step and one or more steps that precede the crystallization step, in which not all of the crystallization mother liquid is recycled.

A process for producing granules containing one or more complexing agent salts of the general formula from an aqueous starting solution, containing the one or more complexing agent salts in a concentration of from 10 to 80% by weight, based on the total weight of the aqueous starting solution, in a jet apparatus.

Process for the combined regeneration of at least two soluble salts contained in a residue of an industrial process comprising heavy metals, comprising: adding an amount of reactive aqueous solution needed to completely dissolve the salts which are desired to be regenerated to the residue; subjecting the resulting aqueous suspension to a separation to obtain an aqueous production solution on the one hand and insoluble impurities on the other hand, which are removed; successively subjected the aqueous production solution to at least two selective crystallization steps intended to crystallize, separately, the at least two soluble salts which are desired to be regenerated, which are washed, dried and regenerated separately; and adjusting the concentration of at least one of the soluble salts to be regenerated in the aqueous production solution, at the moment when such solution is subjected to the step of crystallization of this salt, to give rise to the selective crystallization of this salt, by addition of a controlled amount of this salt to the aqueous production solution upstream of the crystallization step.

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An electrical voltage-generating piezoelectric device comprising at least a first blade (1) with a curved portion (10) defining a first arm (11) and a second arm (12) of the blade, the first arm (11) being intended to be fastened to a fixed support, the second arm (12) being substantially flat and having a free end (120) designed to oscillate around its resting position under the effect of mechanical force, at least one piezoelectric element (31) resting upon one of the main surfaces (14) of the second arm (12) of the first blade. The device also includes a second blade (2) identical in structure to the first blade (1), the first arms (11, 21) of the first and second blades (1, 2) being fastened together on all or part of their surfaces and being fixed relative to each other.

Provided is a garment generating electricity which transforms kinematic energy generated when a user wearing the garment walks and/or swings arms past torso to an electric energy, and has a simple structure and is produced at low cost, and realizes excellent electricity generation efficiency. A garment generating electricity from ambulation or aim swinging past torso or both includes a magnet member arranged on a first part of a garment to generate magnetic field, a coil member provided on a second part of the garment which reciprocally moves with the first part of the garment while walking or swinging aims past torso, the coil member generating electricity from the magnetic field of the magnet member, and a storage battery charged with the electricity generated by the coil member.

A system and method provides a piezoelectric stack arrangement for reduced driving voltage while maintaining a driving level for active piezoelectric materials. A stack arrangement of d36 shear mode single crystals of both air X-cut and Y-cut ±1:45° (±20°) arrangement are bonded with discrete conductive pillars to form a shear crystal stack. The bonding area between the neighboring crystal parts is minimized. The bonding pillars are positioned at less than a total surface are of the single crystal forming the stack. The stack fabrication is facilitated with a precision assembly system, where crystal parts are placed to desired locations on an assembly fixture for alignment following the preset operation steps. With the reduced clamping effect from bonding due to lower surface coverage of the discrete conductive pillars, such a piezoelectric d36 shear crystal stack exhibits a reduced driving voltage while maintaining a driving level and substantial and surprisingly improved performance.

An electric motor includes a stator operable to produce a magnetic field and defining an opening, and a rotor at least partially disposed within the opening. The rotor includes a shaft extending along a rotational axis, a first rotor magnetic core portion including a plurality of laminations stacked contiguously on the shaft, and a second rotor magnetic core portion coupled to the plurality of laminations. The first rotor magnetic core portion and the second rotor magnetic core portion cooperate to define the rotor magnetic core. A plurality of windings is coupled to the rotor magnetic core and an air flow path is formed as part of the second rotor magnetic core portion. The air flow path includes an axial portion that passes through the shaft axially along the rotational axis and a radial portion that extends radially outward through the second rotor magnetic core portion.

A triboelectric generator includes a first contact charging member and a second contact charging member. The first contact charging member includes a first contact layer and a conductive electrode layer. The first contact layer includes a material that has a triboelectric series rating indicating a propensity to gain electrons due to a contacting event. The conductive electrode layer is disposed along the back side of the contact layer. The second contact charging member is spaced apart from and disposed oppositely from the first contact charging member. It includes an electrically conductive material layer that has a triboelectric series rating indicating a propensity to lose electrons when contacted by the first contact layer during the contacting event. The electrically conductive material acts as an electrode. A mechanism maintains a space between the first contact charging member and the second contact charging member except when a force is applied thereto.

A monolithic integration of phase change material (PCM) switches with a MEMS resonator is provided to implement switching and reconfiguration functionalities. MEMS resonator includes a piezoelectric material to control terminal connections to the electrodes. The PCM is operable between an ON state and an OFF state by application of heat, which causes the phase change material to change from an amorphous state to a crystalline state or from a crystalline state to an amorphous state, the amorphous state and the crystalline state each associated with one of the ON state and the OFF state. A method of fabricating the MEMS resonator with phase change material is provided. A reconfigurable filter system using the MEMS resonators is also provided.

Protective gear is provided, such as, for example, protective headgear that includes a rigid helmet structure, an engagement system configured to engage a user's head, and a plurality of tethering devices coupled between the engagement system and the rigid helmet structure to suspend the rigid helmet structure from the user's head when the protective headgear is worn. The protective headgear further includes at least one damper coupled to one or more of the plurality of tethering devices to resist motion of the rigid helmet structure relative to the engagement system when the rigid structure is impacted during an impact event.

Presented is a method for controlling an electronic stringed instrument. Embodiments of electrical stringed instruments according to the present invention can be actual stringed instruments or virtual representations of stringed instruments. The methods provide a way in which to teach and play electronic stringed instruments which allow a novice musician to focus on a small portion of playing of a stringed instrument while maintaining overall musicality and ability to play the instrument.

A stringed musical instrument including a body in which a cutaway is formed, wherein the body includes a back board on which at least one brace is provided so as to extend in a width direction of the back board, and wherein a first brace, which is the closest to the cutaway among the at least one brace, has a dimension in the width direction of the back board smaller than a width of the back board at a position of the back board at which the first brace is fixed, the first brace being fixed to the back board so as to be disposed nearer to one side of the back board than another side thereof on which the cutaway is formed.

A content server generates sponsored audio including procedurally generated background music. The content server obtains reference music features describing musicological characteristics of reference songs as well as sponsored audio information received from a third-party. The content server determines music generation parameters based on the sponsored audio information and based on a music model mapping the reference music features to music generation parameters. The music model may incorporate machine learning techniques to improve the mapping. The content server generates background music by using the determined music generation parameters as input to a procedural music algorithm, and generates sponsored audio by combining the generated background music concurrently with an audio voiceover obtained from the sponsored audio information. The sponsored audio is provided to a client device, which presents the sponsored audio to a user.

The Invention is designed so that it is comfortable to hold, and easy to play for long periods of time without becoming fatigued. There are two different designs that the invention can utilize. Both designs provide for an instrument that is compact, making it comfortable for the musician to reach various parts of the fingerboard while still providing a normal scale fretboard. The first design features one neck, shaped to look like the letter Z. The neck is actually composed of three sections: The first section contains the lower notes of the fretboard, while the second section contains the higher notes. Between these two sections sits a connecting strut that connects the strings via an additional string saddle. This design thus produces uses two separate fretboard areas that are easy to reach, providing comfortable access to a full scale of notes. The second design includes two wholly separate necks, similar to a double neck guitar. (1) One neck is normal length and is meant to be used to play the higher notes of the scale. The musician has the option to play the lower notes on this neck, as well. To make the lower notes easier to reach, another neck is included just below the first neck. The second neck is either placed further up the body horizontally, or is undersized, making the lower frets closer to the body of the musician. The second neck's bridge is located on the back of the instrument, thus providing a regular string length, and thus a full scale of notes. This design is similar to that of portable guitars, but goes a step further. Instead of replacing the head stock of the instrument with a back mounted bridge, (2) or using a removable neck, (3) the placement of the neck is moved further up the body horizontally. Like some portable instruments, the bridge is mounted on the back side, but for different reasons. In the invention, the bridge is moved much further up the back of the instrument, allowing either the neck to be placed further up the body on the front side, or an undersized neck to be used, thus keeping a full scale of notes on the fretboard. The lower notes of this neck are easier to reach than a normal positioned neck. The higher notes of this neck will be hard to reach, but can be utilized by musicians for some applications, most notably slide playing, and harmonic effects. For others, the first neck will be used for playing on higher frets.Additionally, both instrument designs utilize a curved underside, conforming to the shape of the leg, thus providing for comfortable sitting playing.

A system for remotely generating sound from a musical instrument includes a calibration system to improve the quality of the sound produced by the musical instrument. In one embodiment, the system includes an input configured to receive a signal representative of the sound of a first musical instrument, an exciter for converting the signal to mechanical vibrations, a coupling interface for coupling the mechanical vibrations into a second musical instrument, and a calibration system for altering the signal sent to the exciter.

A method, computer program product, and system for automatically tuning a stringed instrument. An initial height of a first string of an instrument having a plurality of strings and a floating bridge is determined. The height of the plurality of strings is determined using a bridge sensor. The floating bridge is locked. A frequency of the first string is analyzed. In response to determining the frequency of the first string does not match a predetermined frequency, a tuning peg servo motor to adjust a tuning peg, thereby adjusting a string tension of the first string. The one or more bridge servo motors adjusts a spring tension until the spring tension of the one or more springs equals the string tension of the first string. In response to determining the first string is tuned, the floating bridge is unlocked.

A method, computer program product, and system for automatically tuning a stringed instrument. An initial height of a first string of an instrument having a plurality of strings and a floating bridge is determined. The height of the plurality of strings is determined using a bridge sensor. The floating bridge is locked. A frequency of the first string is analyzed. In response to determining the frequency of the first string does not match a predetermined frequency, a tuning peg servo motor to adjust a tuning peg, thereby adjusting a string tension of the first string. The one or more bridge servo motors adjusts a spring tension until the spring tension of the one or more springs equals the string tension of the first string. In response to determining the first string is tuned, the floating bridge is unlocked.

A method for converting textual messages to musical messages comprising receiving a text input and receiving a musical input selection. The method includes analyzing the text input to determine text characteristics and analyzing a musical input corresponding to the musical input selection to determine musical characteristics. Based on the text characteristic and the musical characteristic, the method includes correlating the text input with the musical input to generate a synthesizer input, and sending the synthesizer input to a voice synthesizer. The method includes receiving a vocal rendering of the text input from the voice synthesizer and generating a musical message from the vocal rendering and the musical input. The method includes generating a video element based on a video input, incorporating the video element into the musical message, and outputting the musical message including the video element.

A voice generation device (10b) is configured to generate a voice corresponding to one or a plurality of characters designated in a pre-defined character string. A controller (10a) for the voice generation device is provided with a character selector (60a) configured to be operable by a user to designate the one or a plurality of characters in the character string, and a voice control operator (60b) configured to be operable by the user to control the state of the voice to be generated by the voice generation device. The controller (10a) is provided with a grip (G) suitable for being held with a hand of the user, and the character selector and the voice control operator are provided on the grip. The character selector and the voice control operator are provided on the grip at such positions as to be operable with different fingers of the user holding the grip.

A delay time counter in a DSP cyclically counts a sampling clock from zero to a delay time sampling count and issues a delay time interrupt to a CPU each time the sampling clock count reaches the delay time sampling count. The CPU measures a time difference between each time the DSP issues the delay time interrupt and each time sequence clock interrupts occur a number of times corresponding to the delay time. Then, in order to reduce this time difference, the CPU increases or decreases a maximum count that is set to the sequence clock counter. Therefore, in the next delay process, the shift between the time by which the automatic performance is advanced by the CPU (which is equal to the delay time) and the timing of the delay process executed by the DSP (which is also equal in length to the delay time) will be corrected.

A stringed instrument bow includes an elongated stick (102) having a head (110) and a frog (112) holding a ribbon of bow hair (108). The head and frog are configured such that bow hair (108) held under tension between the head and the frog forms a longitudinally twisted ribbon as held.

A drum assembly includes a drum, a stimulus processor assembly and a Tesla coil. The stimulus processor assembly receives a stimulus, generates an input signal, and converts the input signal to an output signal. The Tesla coil receives the output signal from the stimulus processor assembly. The Tesla coil emits an electrical discharge in response to the output signal. The electrical discharge occurs at least partially within the drum interior. The stimulus processor assembly uses a conversion algorithm to convert the input signal to an output signal. The Tesla coil can be positioned inside or outside of a drum interior of the drum. A discharge router can send the electrical discharge from the Tesla coil to the drum interior. The electrical discharge can have an intensity that is correlative to the decibel level of the stimulus. The stimulus can be generated by the drum or by a source remote from the drum.

A system for remotely generating sound from a musical instrument includes a linear exciter which may be configured as a brace for a sound board of the musical instrument. In one embodiment, the system includes an input configured to receive a signal representative of the sound of a first musical instrument, a linear exciter for converting the signal to mechanical vibrations, and a calibration system for altering the signal sent to the exciter.