Koito Manufacturing Company, Ltd.

Roland Corporation

Meiji University

Akihiro Nagata

Shinichi Irisawa

Kunio Fukai

Takeshi Fukuyo

Yoshitaka Ohshima

Hiroshi Goto

Masakazu Nagasawa

Takaaki Hagino

Tokio Takahashi

Fumihiko Miura

Shigeki Sagayama

Nobuo Ohkawai

Yoji Inagaki

Ichiro Yazawa

Hidemasa Togai

Yusuke Miyama

Hiroshi Okamura

Kohei Hayashi

In a synthesizer, the highest note number is set from the allowed Oct width and the lowest note number of a sound production part in a setting table, and if the note number of an Arp note memoryis not between the lowest note number and the highest note number, the note number of one octave unit is added to or subtracted from the note number of the Arp note memory. Consequently, the note number of the Arp note memoryis corrected to the pitch range between the lowest note number and the highest note number, and thus can be corrected to the sound production pitch range of the timbre of the sound production part, and arpeggios can be outputted using sounds that are more appropriate for an instrument of said timbre.

Arpeggiator, recording medium and method of making arpeggio

[Problem] To provide an arpeggiator capable of creating a rich arpeggio performance that includes multiple pieces of performance information, and a program equipped with a function therefor. [Solution] When the key press mode for a sounding part is a chord, a synthesizeracquires all note numbers from a remain table for the sounding part in a setting tableand stores all the note numbers in an Arp note memory. This allows all the notes corresponding to the note numbers set in the remain table to be concurrently generated at the sounding time set in an Arp pattern. That is, an expressive arpeggio based on a chord made up of all the notes corresponding to the note numbers set in the remain table can be produced.

An electronic device and a data usage method are provided. An electronic musical instrument confirms whether respective sound data stored in a timbre memory or a wave memory can be used or cannot be used based on management information acquired from a server. A sound data determined to be usable in the management information is validated so that it can be used for loading or writing. On the other hand, a sound data determined to be unusable in the management information is invalidated so that it cannot be used.

Electronic device, data usage method, and recording medium

[Problem] To provide an arpeggiator enabling musically natural arpeggio playing to be achieved, and a program comprising a function therefor. [Solution] In the present invention, a synthesizerresets the number of octaves in an octave counter memoryto zero at the beginning of each bar when an octave reset function is on. Due to this configuration, sounds generated at the beginning of each bar, that is, when the step count is 0, all have the same note number. Consequently, a sound generation timing-based cycle of an arpeggio pattern of each bar can be synchronized with a pitch variation-based cycle, making it possible to give a listener the impression that a consistent phrase is being played.

The automatic performance device includes a storage part for storing a plurality of performance patterns, a performance part for playing a performance on the basis of a performance pattern stored in the storage part, an input part for inputting performance information through an input device that receives a performance operation of a user, and a selection part for selecting a performance pattern being a maximum likelihood estimation from the plurality of performance patterns stored in the storage part on the basis of the performance information input to the input part.

Automatic performance device and automatic performance method

Keyboard instrument

An arc tube bodyand a foil such as molybdenum foilare joined with each other such that a compressive stress of 10N/mor more remains at an ordinary temperature in the arc tube bodyalong a junction surface. The compressive stress is always generated on the arc tube bodyeven if a fluctuation in the stress is caused on the junction surface by the repetition of the ON/OFF of the arc tube (or a tensile stress is caused to have a very small value even if the compressive stress and the tensile stress are alternately generated). Thus, the junction strength of both members may be increased. In one embodiment, a plurality of cracks (intercrystalline cracks) may be generated on the molybdenum foilby a high pressure acting during pinch seal, and quartz glass is caused to enter the cracks so that the junction strength of both members can be increased.

Arc tube having compressive stress and method for manufacture of an arc tube

An arc tube and method of fabricating the arc tube for a discharge lamp. The arc tube includes an arc tube main body at which a sealed glass bulb serving as a discharge portion sandwiched by pinch seal portions is formed at a portion of a glass tube W along the longitudinal direction thereof, and a cylindrical shroud glass which is welded on and integrated with the arc tube main body so as to cover the sealed glass bulb , the front and rear end portions of the shroud glass may be joined, for example, by welding on shroud glass welded portions with circular cross sections provided at the front and rear end sides of the arc tube main body , respectively. The inner peripheral surface of the diameter reduced portion of the shroud glass tube , which is molten, soften and deformed inside along the radial direction, contacts closely to the circular outer peripheral surface on the arc tube main body side, so that a space can not be formed at the welding portion of the shroud glass (adhesion surface). Thus, the atmosphere does not enter into the sealed space surrounded by the shroud glass , and accordingly, devitrification is prevented.

Arc tube for discharge lamp and method of fabricating the same

Arc tube including step-down plane portions in pinch seal area

A method of manufacturing an arc tube having a light emitting tube portion, a first pinch seal portion, and a second pinch seal portion, all formed on a quartz glass tube. The first and second pinch seal portions are disposed on both sides of the light emitting tube portion. The quartz glass is provided almost vertically with the first pinch seal portion down. A thermal insulating plate is provided in a boundary position between the light emitting tube portion and a portion to be pinch-sealed in an outer peripheral space of the quartz glass tube. Liquid nitrogen is jetted from a cooling nozzle provided obliquely below the light emitting tube portion toward the same, thereby cooling the light emitting tube portion. The portion to be pinch-sealed is heated with a burner, and pinch-sealed with a pincher immediately thereafter.

Method of manufacturing arc tube

Method and apparatus for supplying pellets to arc tube for discharge lamp

A mercury supplying method capable of always supplying a constant amount of mercury into a chamber part easily by executing measurement and ejection of the mercury at the same time. A small diameter pipe as a mercury supply path, is inserted through a glass tube elongating from a chamber part of an arc tube from above so as to have the tip part thereof substantially reaching into the chamber part, and connecting the upstream side of the sealed mercury supply path (mercury barrel) with a gas pressure adjuster. The gas pressure adjuster keeps the inside of the mercury supply path (mercury barrel) at a predetermined pressure so as to maintain the inside of the small diameter pipe in the state filled with mercury as well as applying a predetermined pressure to the mercury in the small diameter pipe for a predetermined time and thus ejecting a predetermined amount of mercury from the small diameter pipe tip part so as to be dropped and supplied to the chamber part. Measurement and ejection of the mercury can be executed at the same time with the small diameter pipe inserted through the glass tube of the arc tube from above. A predetermined amount of mercury can always be supplied into the chamber part in a short time.

Method and apparatus for supplying mercury to arc tube for discharge lamp

An arc tube for a discharge lamp device comprises: a cylindrical glass tube made of glass, having linear extension portions, each having an opening portion at an end, and a spherically swollen portion formed between the linear extension portions; and electrode assemblies inserted in the respective linear extension portions, wherein neck portions are formed in boundaries between the spherically swollen portion and the linear extension portions so that the glass in each of the linear extension portions side is prevented from flowing into the inside of the spherically swollen portion when the linear extension portions are pinch-sealed.

Arc tube for discharge lamp device

A method for manufacturing an arc tube which obtains a high luminous flux retention rate by completely removing impurities, such as oxides, from the surfaces of the electrodes within the arc tube. An exhaust tube is connected to a glass tube of an arc tube in which a pair of electrodes are oppositely disposed. After gas is exhausted through the exhaust tube from the glass tube, inert gas is introduced. An arc discharge generating circuit is connected to the oppositely disposed electrodes, and an ion bombardment process is carried out in which an arc discharge is caused between the electrodes in the inert gas atmosphere at a current density of 30 to 100 A/mm.sup.2. Due to the arc discharge process, impurities (oxides), which lead to a reduction of the luminous flux retention rate, are completely removed from the electrode surfaces. Gas is exhausted from the glass tube, and then a degassing process is carried out to degas the glass tube while it is heated to thus completely remove impurities from the inner wall of the glass tube. Metal halide as a luminous material, mercury, and a rare gas are successively introduced into the glass tube through the exhaust tube, and the exhaust tube is tipped off.

Method for manufacturing arc tube for discharge bulb

An electrode assembly for an arc tube which is free from the difficulty that tearing of a foil occurs in pinch-sealing the arc tube. One end portion of an electrode bar is overlapped with a molybdenum foil, and the electrode bar is connected to the molybdenum foil by spot-welding the overlapped portions of the two members, except for the tip end part of the end portion of the electrode bar, whereby the molybdenum foil is prevented from being damaged by the rectangular corner of the end portion of the electrode bar.

Growing community of inventors

Shizuoka, Japan

Akihiro Nagata