Casio Computer Co., Ltd.

Kazutaka Kasuga

Ryutaro Hayashi

Keiichi Sakurai

Yuji Tabata

Chihiro Toyama

Eiichi Harada

Naotaka Uehara

Katsutoshi Sakai

Hideo Hamanaka

A musical sound signal generation device continuously connects any one of a connected zeroth delay unit and a connected second delay unit to a fractional delay block and connects at least any one of a new zeroth delay unit and a new second delay unit to at least any one of the fractional delay block other than the fractional delay block connected to a new first delay unit in response to setting any one of the connected zeroth delay unit and the connected second delay unit as the new first delay unit, setting a delay unit in a preceding stage of the new first delay unit as the new zeroth delay unit, and setting a delay unit in a subsequent stage of the new first delay unit as the new second delay unit in accordance with a change in a designated tone pitch.

Musical sound signal generation device, musical sound signal generation method, and non-transitory computer-readable recording medium

A detection device including n number of sensors arrayed in a direction, in which n is an integer of 3 or more and from which (n&#x2212;1) pairs of adjacent sensors are formed, and a processor which determines one specified position in the direction based on output values of the n number of sensors, in which the processor calculates (n&#x2212;1) sets of difference values each of which is a difference between two output values corresponding to each of the (n&#x2212;1) pairs of sensors, and determines the one specified position based on the (n&#x2212;1) sets of difference values and correlation positions corresponding to the (n&#x2212;1) sets of difference values and indicating positions correlated with array positions of each pair of sensors.

Detection device for detecting operation position

An electronic wind instrument is provided with a processor (CPU) and plural touch sensors (a detecting unitand detecting units) disposed along a first direction. A first output variable da/dt is obtained, representing a variation per unit time of an output value from a first sensor (detecting unit) in the plural touch sensors disposed on the side close to first end (tip side) in the first direction. A second output variable dS/dt is obtained, representing a variation per unit time of a sum of output values from second sensors (detecting units) disposed between a second end (heel side) and the first sensor in the first direction. The processor judges based on the first output variable da/dt and the second output variable dS/dt whether a tonging process should be performed.

Electronic wind instrument capable of performing a tonguing process

In the preset invention, in an initial stationary state of a drumstick section, a CPU stores each axis component of geomagnetism obtained by a magnetic sensor in a RAM, and obtains each axis component of geomagnetism obtained by the magnetic sensor which is changed by a motion provided to the drumstick section at every predetermined timing. Then, the CPU accumulates each axis component of geomagnetism obtained at every predetermined timing, for each predetermined interval, and conforms each axis component of geomagnetism accumulated thereby to each axis component of geomagnetism stored in the RAM.

Orientation detection device, orientation detection method and program storage medium

In the preset invention, in an initial stationary state of a drumstick section, a CPU stores acceleration that occurs due to gravity and is obtained by an acceleration sensor in a RAM, obtains, at every predetermined timing, acceleration that occurs due to a motion provided to the drumstick section and is obtained by the acceleration sensor at a predetermined timing, accumulates the accelerations each obtained at the predetermined timing for each predetermined interval, and conforms the accelerations obtained by accumulation to the acceleration stored in the RAM.

An electronic musical instrument uses a mouthpiece model that models a mouthpiece as a three-dimensional shape having one end at which the mouthpiece is to be held in a mouth of a performer being smaller than another end. A processor in the instrument calculates a reflection coefficient of a progressive wave and a regressive wave using the mouthpiece model by calculating a wave impedance for the progressive wave and calculating a wave impedance for the regressive wave, and generates a musical sound signal on the basis of the calculated reflection coefficient, which is then outputted to a sound generator for sound production.

Musical sound generating device, control method for same, storage medium, and electronic musical instrument

The present invention provides a reed for an electronic musical instrument and an electronic musical instrument in which determination of lip position is not susceptible to the influence of noise and the like. In one embodiment of the present invention, an electronic musical instrument is provided with a reed and a plurality of sensor electrodes in the reed, arranged next to one another from a tip side of the reed towards a base side of the reed, each of the sensor electrodes having a center portion projecting towards the tip side of the reed. The lip position of the performer is determined in accordance with the output from the plurality of sensors.

Reed for electronic musical instrument, and electronic musical instrument

An electronic musical instrument includes: a contact sensor that generates lip detection information from an operation by a performer; and a controller that derives a lip contact area from the lip detection information generated by the contact sensor, and performs musical note control of an electronic sound source in accordance with the derived lip contact area.

Electronic wind instrument

A sensor obtains an angular rate of a stick member. A sound source map includes plural areas disposed in a virtual space. CPU presumes a direction of a turning axis of the stick member based on the angular rate obtained by the sensor, while a user is operating the stick member, calculates an angular rate of a top of the stick member based on the angular rate obtained by the sensor with the angular rate in the longitudinal direction of the stick member removed, calculates a position of the holding member in the virtual space after a predetermined time, based on the recent direction of the turning axis of the stick member and recent angular rate of the top of the stick member, and sends a sound generating unit a note-on event of a musical tone assigned to an area corresponding to the calculated position among the plural areas.

Growing community of inventors

Fussa, Japan

Kazutaka Kasuga