Abstract: A power generating device is provided, which includes a matrix converter device, a power transmission path for transmitting electric power between the matrix converter device and an electric power system, and at least one inductor for phase adjustment, bridged between the power transmission path and a neutral point.

Abstract: A power generating device is provided, which includes a matrix converter device, a power transmission path for transmitting electric power between the matrix converter device and an electric power system, and at least one inductor for phase adjustment, bridged between the power transmission path and a neutral point.

Abstract: A wind turbine generator system for generating electric power from wind power, the system comprising: a conversion unit configured to convert the electric power generated; a first cooling unit configured to cool the conversion unit; a wind condition data acquisition unit configured to acquire wind condition data; and a cooling control unit configured to control an operation of the first cooling unit in accordance with the wind condition data acquired by the wind condition data acquisition unit.

Abstract: A matrix converter apparatus for wind-power generation according to an embodiment includes a matrix converter and a controller. The controller adds information about a voltage phase of the power grid or information about a voltage phase of the generator to a power-grid-side power factor to generate information about a current phase, and generates a control signal for controlling the matrix converter based on the information about the current phase.

Abstract: An apparatus is to assist an unskilled player in playing a musical instrument by detecting the quantity of the player's manipulation against the instrument, modifying the detected manipulation quantity with reference to a recommended manipulation to a degree according to a given assistance coefficient, and actuating the instrument with the modified manipulation quantity. For a brass instrument, the apparatus comprises an embouchure sensor and a breath pressure sensor to detect the embouchure and the breath pressure of the player as he/she plays the brass instrument. The detected embouchure and breath pressure are then modified with reference to a recommended embouchure and breath pressure weighted by a given assistance coefficient. The apparatus actuates the brass instrument based on the modified embouchure and breath pressure.

Abstract: A playing device includes a hollow blowing body in which a vibration is applied to an internal air in the hollow blowing body in response to a vibration of lips of a player, a detecting portion which generates a detecting signal in response to the vibration in the blowing body, and a vibration applying portion which applies a vibration corresponding to the detecting signal to an air in the blowing body.

Abstract: A production method of a musical instrument and its components (parts, materials or the like), a musical instrument and its components obtained in accordance with the methods that can achieve the effect of increased sound quality of the musical instrument because of deterioration with age after many years by reforming the quality of the coating layer on the surface of the musical instrument or its components in a short time, are provided. A production method of a musical instrument and of a component of the musical instrument includes steps of: coating the component; and irradiating ultraviolet that has the highest peak value of strength in the far ultraviolet wavelength region on a coating layer, and the musical instrument or the component of the musical instrument are made in accordance with this method.

Abstract: An electronic drum 30 comprises a hollow body part 10 having an opening side, a drum head stretched over the opening side of the hollow body part 10 and having a stroked surface, an elastic cushion part 40 arranged to touch with a reverse side of the stroked surface of the drum head 30, a vibration absorber 43 that is arranged inside the body part 10 and absorbs a vibration transmitted from the body part 10, and a sensor 41 that is arranged in the vibration absorber 43 to touch with the elastic cushion part 40 and outputs a result of detecting a stroke on the drum head 30 transmitted by the elastic cushion part 40. The drum head 30 is made of a lamination of a plurality of elastic films and has a plurality of holes 30h pierced thorough all layers of the laminated films.

Abstract: An apparatus is to assist an unskilled player in playing a musical instrument by detecting the quantity of the player's manipulation against the instrument, modifying the detected manipulation quantity with reference to a recommended manipulation to a degree according to a given assistance coefficient, and actuating the instrument with the modified manipulation quantity. For a brass instrument, the apparatus comprises an embouchure sensor and a breath pressure sensor to detect the embouchure and the breath pressure of the player as he/she plays the brass instrument. The detected embouchure and breath pressure are then modified with reference to a recommended embouchure and breath pressure weighted by a given assistance coefficient. The apparatus actuates the brass instrument based on the modified embouchure and breath pressure.

Abstract: An apparatus is to assist an unskilled player in playing a musical instrument by detecting the quantity of the player's manipulation against the instrument, modifying the detected manipulation quantity with reference to a recommended manipulation to a degree according to a given assistance coefficient, and actuating the instrument with the modified manipulation quantity. For a brass instrument, the apparatus comprises an embouchure sensor and a breath pressure sensor to detect the embouchure and the breath pressure of the player as he/she plays the brass instrument. The detected embouchure and breath pressure are then modified with reference to a recommended embouchure and breath pressure weighted by a given assistance coefficient. The apparatus actuates the brass instrument based on the modified embouchure and breath pressure.

Abstract: In an apparatus for assisting play of a wind instrument, an actuator is attached to the wind instrument for vibrating a portion of the wind instrument so as to assist play of the wind instrument. A microphone receives a vibration of a sound generated by the wind instrument and generates a vibration signal representing the vibration of the sound. A breath pressure sensor detects a pressure of a breath that is blown into the wind instrument during the play thereof, and generates a breath pressure signal corresponding to the detected pressure of the breath. A controller generates a control signal corresponding to the product of an inverse value of an envelope of the vibration signal and a value of the breath pressure signal. A variable gain amplifier amplifies the vibration signal with a variable gain which varies in response to the control signal so that an output signal of the variable gain amplifier is provided to enable the excitation part to vibrate the portion of the wind instrument.

Abstract: A playing device includes a hollow blowing body in which a vibration is applied to an internal air in the hollow blowing body in response to a vibration of lips of a player, a detecting portion which generates a detecting signal in response to the vibration in the blowing body, and a vibration applying portion which applies a vibration corresponding to the detecting signal to an air in the blowing body.

Abstract: In an apparatus for assisting play of a wind instrument, an actuator is attached to the wind instrument for vibrating a portion of the wind instrument so as to assist play of the wind instrument. A microphone receives a vibration of a sound generated by the wind instrument and generates a vibration signal representing the vibration of the sound. A breath pressure sensor detects a pressure of a breath that is blown into the wind instrument during the play thereof, and generates a breath pressure signal corresponding to the detected pressure of the breath. A controller generates a control signal corresponding to the product of an inverse value of an envelope of the vibration signal and a value of the breath pressure signal. A variable gain amplifier amplifies the vibration signal with a variable gain which varies in response to the control signal so that an output signal of the variable gain amplifier is provided to enable the excitation part to vibrate the portion of the wind instrument.

Abstract: An apparatus is to assist an unskilled player in playing a musical instrument by detecting the quantity of the player's manipulation against the instrument, modifying the detected manipulation quantity with reference to a recommended manipulation to a degree according to a given assistance coefficient, and actuating the instrument with the modified manipulation quantity. For a brass instrument, the apparatus comprises an embouchure sensor and a breath pressure sensor to detect the embouchure and the breath pressure of the player as he/she plays the brass instrument. The detected embouchure and breath pressure are then modified with reference to a recommended embouchure and breath pressure weighted by a given assistance coefficient. The apparatus actuates the brass instrument based on the modified embouchure and breath pressure.

Abstract: An electronic drum 30 comprises a hollow body part 10 having an opening side, a drum head stretched over the opening side of the hollow body part 10 and having a stroked surface, an elastic cushion part 40 arranged to touch with a reverse side of the stroked surface of the drum head 30, a vibration absorber 43 that is arranged inside the body part 10 and absorbs a vibration transmitted from the body part 10, and a sensor 41 that is arranged in the vibration absorber 43 to touch with the elastic cushion part 40 and outputs a result of detecting a stroke on the drum head 30 transmitted by the elastic cushion part 40. The drum head 30 is made of a lamination of a plurality of elastic films and has a plurality of holes 30h pierced thorough all layers of the laminated films.

Abstract: A production method of a musical instrument and its components (parts, materials or the like), a musical instrument and its components obtained in accordance with the methods that can achieve the effect of increased sound quality of the musical instrument because of deterioration with age after many years by reforming the quality of the coating layer on the surface of the musical instrument or its components in a short time, are provided. A production method of a musical instrument and of a component of the musical instrument includes steps of: coating the component; and irradiating ultraviolet that has the highest peak value of strength in the far ultraviolet wavelength region on a coating layer, and the musical instrument or the component of the musical instrument are made in accordance with this method.

Abstract: Wood such as spruce, maple, and hornbeam are retained in high pressure steam of pressure 0.2 to 1.6 MPa at 120 to 200° C. for 1 to 60 minutes, and subsequently, cooled and dried to obtain a modified wood having superior acoustic properties and old wood-like appearance due to a change to a deep color tone. Since the conventional modification methods by chemical treatment using chemicals such as resorcin and formaldehyde are not used, the treatment steps are simple and a modified wood used as a material for musical instruments is obtained at low cost.

Abstract: Wood such as spruce, maple, and hornbeam are retained in high pressure steam of pressure 0.2 to 1.6 MPa at 120 to 200° C. for 1 to 60 minutes, and subsequently, cooled and dried to obtain a modified wood having superior acoustic properties and old wood-like appearance due to a change to a deep color tone. Since the conventional modification methods by chemical treatment using chemicals such as resorcin and formaldehyde are not used, the treatment steps are simple and a modified wood used as a material for musical instruments is obtained at low cost.

Abstract: A process for producing a dicarboxylic acid monoester which comprises subjecting a dicarboxylic acid monoester or an alkali metal salt of a dicarboxylic acid monoester and a metal alkoxide to transesterification in the presence of an organic solvent, or a process for producing a dicarboxylic acid monoester which comprises subjecting a dicarboxylic acid monoester or an alkali metal salt of a dicarboxylic acid monoester and an alcohol to transesterification in the presence of a metal alkoxide.

Abstract: A drum producing a wooden tom-tom sound free of any disharmony including reinforcement rings made of wood, plastic, etc. and fastened to both ends of the shell and batter heads stretched over these reinforcement rings with no parts for holding the batter heads projecting beyond the batter heads level, thus making a conventional rim shot impossible but a stick-playing method or edge shot in which the batter head and the reinforcement ring are simultaneously struck with a stick possible.