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| Number | Title | Issue Date |
| 8110732 | Keyboard device for electronic keyboard instrument A keyboard device for an electronic keyboard instrument, ensuring stable pivotal motion of each key and improved in each of assembly and disassembly. Each key extends in a front-rear direction and has a pivot shaft extending at a rear end in a left-right direction. ... | 02/07/2012 |
| 8093480 | Keyboard device for electronic keyboard instrument A keyboard device for an electronic keyboard instrument, which has a simple construction and can be manufactured at relatively low costs, and is capable of providing let-off feeling closely analogous to the let-off feeling of an acoustic piano. The keyboard device c... | 01/10/2012 |
| 8080721 | Hammer for electronic keyboard instrument A hammer for an electronic keyboard instrument, constructed to ensure secure mounting of a weight to a hammer body and enable both assembly and disassembly of the hammer to be easily performed. The hammer includes a hammer body having a weight mounting portion that ... | 12/20/2011 |
| 8017850 | Electronic musical instrument having ad-lib performance function and program for ad-lib performance function The ROM 101 stores a chord scale note table composed of a plurality of scale by 12 notes starting from a chord tone in which C note is given as a root note and arranging a chord scale note as an inverted form of a chord in which the note is given as the lowes... | 09/13/2011 |
| 7973233 | Musical tone control system for grand-type piano A musical tone control system for a grand-type piano, which not only enables a shutter to be mounted on a hammer without any inconvenience even when a space above the hammer is small, but also is capable of properly controlling musical tones to be sounded. In this s... | 07/05/2011 |
| 7872189 | Electronic musical sound generator An electronic musical sound generator prevents a sound production sequence to be stopped from continuing to be produced even through the key is released. Even if an erroneous instruction is sent to prevent identification data from being compared, in other words, if ... | 01/18/2011 |
| 7642445 | Music sound generator A music sound generator imitates released key string vibration sounds (RKSV) and cabinet resonances of an acoustic piano. When a key is pressed, waveform is readout from a normal music sound waveform memory 15. The normal sound waveform is inputted into a fil... | 01/05/2010 |
| 7582824 | Tempo detection apparatus, chord-name detection apparatus, and programs therefor There is provided a tempo detection apparatus capable of detecting, from the acoustic signal of a human performance of a musical piece having a fluctuating tempo, the average tempo of the entire piece of music and the correct beat positions, and further, the meter o... | 09/01/2009 |
| 7579546 | Tempo detection apparatus and tempo-detection computer program A user is asked to perform tapping at beat positions by using a tapping detection section while listening to the beginning of a waveform from which beats are to be detected. When a fluctuation calculation section determines that tapping fluctuation falls in a predet... | 08/25/2009 |
| 7507899 | Automatic music transcription apparatus and program An automatic music transcription apparatus that can automatically transcribe a monophonic or polyphonic signal produced by a single musical instrument is provided. The apparatus includes an input block, an overtone-power-ratio detection block, a storage block, a chr... | 03/24/2009 |
| 7485797 | Chord-name detection apparatus and chord-name detection program When a first bar-division determination section determines that the bass note changes in a bar or when a second bar-division determination section determines that the degree of change in the chord in the bar is large, a chord-name determination section divides the b... | 02/03/2009 |
| 7335829 | Bat for upright piano A bat for an upright piano is provided for ensuring stable swinging movements of a hammer to generate a proper piano sound even if a hammer assembly has the centroid which is laterally asymmetric about a center pin. The bat for an upright piano is supported by the c... | 02/26/2008 |
| 7279627 | Action for piano An action for a piano is provided for clarifying a timing of let-off, improving the sequential touching capabilities, and consequently realizing high playing performance excellent in expressive power in a simple structure without adversely affecting the key touch fe... | 10/09/2007 |
| 7208668 | Keyboard device for keyboard instrument A keyboard instrument which is capable of ensuring sufficient strength of neighboring portions of chassis and preventing generation of noise, while restricting lateral motion of hammers. Keys are pivotally supported by chassis arranged side by side in a left-right d... | 04/24/2007 |
| 7193147 | String-striking device for piano A keystroke device of a piano capable of increasing an area for the adjustment of static loads applied to the tips of keys on the playing sides, wherein a first weight lever (31) rotating according to the movement of the keys (21) is installed above th... | 03/20/2007 |
| 7169990 | Back check for piano A back check for a piano is provided for locking a returning hammer in a pivotal movement without fail and for saving the manufacturing cost. The back check is used for locking the hammer in a pivotal movement for returning after it has struck a string to prevent th... | 01/30/2007 |
| 7141728 | Action part for piano There is provided an action part for a piano, which has higher rigidity than that of an action part made only of a synthetic resin, while maintaining advantageous effects as provided by the use of the synthetic resin, thereby making it possible to obtain the sound v... | 11/28/2006 |
| 6849796 | Operation detection switch, musical instrument and parameter determination program An operation detection switch capable of reproducing the manner of performance in which the speed of depressing an operating portion changes in the middle of a key action and of achieving a reduced manufacturing cost. The operation detection switch includes a switch... | 02/01/2005 |
| 6822155 | Key to switch for electronic musical instrument A key top switch for an electronic musical instrument which can be manufactured at a low cost is provided for preventing noise due to bouncing between an operation panel and a key top, and permitting accurate and easy positioning of the key top at a predetermined po... | 11/23/2004 |
| 6774294 | Key for musical instrument A key for a musical instrument is provided for facilitating the attachment of a weight, and adjustments of a touch load, while using an alternative material for substitution for lead as a material for the weight. The key comprises a swingable key body formed with em... | 08/10/2004 |
| 6740801 | Action for keyboard-based musical instrument An action for a keyboard-based musical instrument is provided for preventing action parts made of a synthetic resin from being charged to eliminate stains due to dust and motes in the air attracted by static electricity. The action is composed of a plurality of acti... | 05/25/2004 |
| 6673991 | Keyboard lid opening and closing mechanism for keyboard musical instrument and keyboard musical instrument A keyboard lid opening and closing mechanism for a keyboard musical instrument having a simple structure and not requiring a large space for installation thereof. To house a keyboard lid in the folded state inside the keyboard musical instrument, the mech... | 01/06/2004 |
| 6528708 | Exterior structure for electronic keyboard instrument The present invention provides an exterior structure for an electronic keyboard instrument which has excellence in an outward appearance and which can be produced easily without detracting acoustic characteristics. In the present invention, a recess groov... | 03/04/2003 |
| 6479742 | Audio system in electronic musical instrument The present invention provides an audio system in an electronic musical instrument which can determine the characteristics of a reproduced sound automatically or simply for matching with the environment. An infrared ray emitter and an infrared ray receiver are... | 11/12/2002 |
| 6469237 | Apparatus for opening and closing top board of grand piano In an apparatus for opening an closing a top board of a grand piano, the top board is hingedly supported along one side thereof on an outer rim of the grand piano. The apparatus has a gear-type of jack made up of a jack main body fixed to a wooden fame of... | 10/22/2002 |
| 6421637 | Pitch shifting apparatus and method In a pitch shifting method, an input sound signal is stored into a memory, and a period of the input sound signal is extracted. Then, a sawtooth wave is produced whose amplitude is set to a value which is integer times the extracted period. A read address... | 07/16/2002 |
| 6313389 | Automatic accompaniment apparatus adjusting sound levels for each part of a plurality of patterns when one pattern is switched to another pattern An automatic accompaniment apparatus has a storage unit (53) for storing information on a variation pattern selection state and the mute setup state of each part of each variation, and a control unit (55) for controlling to make each part in a tone genera... | 11/06/2001 |
| 6255578 | Tone color setting device of electronic musical instrument A musical instrument having a signal output function 1 for outputting a given signal in response to a user command, and a mode managing function 2 for managing process modes of an electronic keyboard and compulsorily finishing an arbitrary process mode of... | 07/03/2001 |
| 6145197 | Method of assembling a grand piano A method of assembling a grand piano, an outer rim for a grand piano and a manufacturing method thereof, an arm for a grand piano and a fabricating method thereof, and a keyboard musical instrument are provided. The method of assembling a grand piano comp... | 11/14/2000 |
| 6091894 | Virtual sound source positioning apparatus A virtual sound source positioning apparatus includes a channel signal generating section for generating first and second channel signals, a first component signal indicative of a component of the first channel signal, and a second component signal indica... | 07/18/2000 |
| 6031916 | Sound effect adding device using DSP A sound effect adding device includes an instruction storage section in a DSP for storing a main routine including a program for controlling an input and an output of an audio signal, and a plurality of selected sound effect adding routines transferred fr... | 02/29/2000 |
| 6023017 | Musical performance assisting system and storage medium storing musical performance assisting program A musical performance assisting system includes a key designating section for designating a key of music, a chord designating section for designating a chord in the music, a chord file storing pointers in a manner so as to correspond to keys of music, and... | 02/08/2000 |
| 5977470 | Electronic musical instrument with independent control of expression and effect An electronic musical instrument has a processing circuit for adding a reverberation tone after volume control using expression data generated upon operation of an expression pedal to generate tone data which does not vary the attenuation characteristics ... | 11/02/1999 |
| 5959228 | Key support device There is disclosed a key support device for a keyboard musical instrument including a plurality of keys and a keyboard chassis. The key support device has a support member for rotatably supporting a rear part of each of the plurality of keys on the keyboa... | 09/28/1999 |
| 5959223 | Method of assembling an upright piano There is provided a method of assembling an upright piano. The upright piano is divided into a plurality kinds of units. The plurality of kinds of units are each separately assembled, and these plurality of kinds of units thus assembled are joined to each... | 09/28/1999 |
| 5932826 | Effect adder circuit with a coefficient smoothing circuit for an electronic musical instrument An electronic musical instrument has an effect adder circuit for adding sound effect which is controlled by coefficients for filtering operations and amplitude control. The instrument also has a smoothing circuit for smoothly changing a coefficient to a t... | 08/03/1999 |
| 5932820 | Damper lever for grand piano A damper lever for a grand piano is provided for realizing a significantly cost reduction, a higher dimensional accuracy at a fabricating stage and a higher weathering resistance, and for permitting lead pieces to be stably fixed in a lever body without c... | 08/03/1999 |
| 5932821 | Hammer head for piano and method of manufacturing same A hammer head for a piano which is simple in structure and is capable of maintaining a humidity preventive effect for a longer time. The hammer head comprises a hammer body having a hammer felt including two flat surfaces substantially parallel to each ot... | 08/03/1999 |
| 5925844 | Piano with built-in electronic musical instrument The invention was developed in order to play an electronic piano in the same manner as when playing an acoustic piano without feeling any sense of incompatibility. At S100, the key velocity (key stroke strength) is detected by key sensors 33 and 35. At S1... | 07/20/1999 |
| 5918296 | Closing control device for fallboard There is provided a closing control device for a fallboard of a piano. A fallboard support is detachably mounted on a body of the piano, and the fallboard is rotatably attached to the fallboard support. A linkage has one end thereof connected to the fallb... | 06/29/1999 |
