| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 121 | AUTOMATIC MUSIC TRANSCRIPTION APPARATUS AND PROGRAM | US12016451 | 2008-01-18 | US20080210082A1 | 2008-09-04 | Ren SUMITA |
| An automatic music transcription apparatus that can automatically transcribe an acoustic signal produced by a single musical instrument, not only in monophonic music but also in polyphonic music, where a plurality of notes are sounded at the same time, is provided. The apparatus includes an input block for receiving an acoustic signal; an overtone-power-ratio detection block for detecting overtone-to-fundamental power ratios of an input sample acoustic signal of a musical instrument used in music to be transcribed automatically; a storage block for storing the overtone-to-fundamental power ratios; a chromatic-note-power detection block for detecting the power of each chromatic note from the acoustic signal input from the musical instrument; an overtone elimination block for subtracting, on the assumption that each chromatic note is a fundamental note, the product of the power of the fundamental note and the power ratio of each overtone corresponding to the chromatic note of the fundamental note from the power of the chromatic note of the overtone and adding the product to the power of the fundamental note, with respect to all the chromatic notes, one after another from the lowest chromatic note; a musical-notation-information detection block for detecting musical notation information by extracting a chromatic note having a power greater than or equal to a threshold level, after the overtone elimination block performs the processing; and a detection result output block for outputting the detected musical notation information to a file or the like. | ||||||
| 122 | AUTOMATIC PLAYER MUSICAL INSTRUMENT PRODUCING SHORT TONES WITHOUT MISSING TONE AND AUTOMATIC PLAYING SYSTEM USED THEREIN | US11612870 | 2006-12-19 | US20070169608A1 | 2007-07-26 | Yuji Fujiwara |
| An automatic player piano is a combination between an acoustic piano and an automatic playing system, and a grand piano and an upright piano are used as the acoustic piano; the grand piano has action units prompter than action units of the upright piano so that a half-stroke recorded through the grand piano is not reproducible by the upright piano; the automatic playing system causes the hammers to rotate toward the strings without any escape thereby compensating the poor promptness with the short keystroke of the keys until the rotation of hammers. | ||||||
| 123 | Music data modifier for music data expressing delicate nuance, musical instrument equipped with the music data modifier and music system | US11261949 | 2005-10-27 | US20060130640A1 | 2006-06-22 | Yuji Fujiwara |
| A music data modifier receives pieces of original music data from a master hybrid piano, and partially modifies the pieces of original music data to pieces of modified music data for a slave hybrid piano; each piece of original music data contains a series of values of a piece of motion data expressing continuous motion of the associated key, a series of values of a piece of time data expressing each expressing a time to obtain the associated value of the motion data and a piece of identification code expressing the key number assigned to the key; even if the music data modifier changes the piece of identification data from the key number to another key number, the piece of motion data still expresses the continuous motion of the key so that the slave hybrid piano exactly reproduce the key motion. | ||||||
| 124 | Automatic player musical instrument with velocity conversion tables selectively accessed and electronic system used therein | US11113909 | 2005-04-25 | US20060000339A1 | 2006-01-05 | Tsutomu Sasaki |
| A key sensor-less automatic player piano includes, key actuators so as to give rise to key motion without any fingering of a human player, key sensors producing key position signals expressing key motion and a data processing unit producing music data codes during a performance on the keyboard and a playback table expressing a relation between the hammer velocity and a reference key velocity; while the data processing unit is recording the performance, the hammer velocity is estimated on the basis of a key velocity-to-hammer velocity conversion table already prepared through an experiment where the keys are depressed by a human player; while the data processing unit is preparing the playback table, the hammer velocity is estimated on the basis of another velocity conversion table prepared through another experiment where the keys are actuated by the key actuators. | ||||||
| 125 | Automatic player musical instrument having playback table partially prepared through transcription from reference table and computer program used therein | US11102914 | 2005-04-08 | US20050247182A1 | 2005-11-10 | Tomoya Sasaki; Tsutomu Sasaki |
| An automatic player piano is only equipped with key sensors, and the automatic player is expected to give rise to hammer motion to be varied together with the loudness of tones; the manufacturer prepared not only a velocity conversion table expressing a relation between measured values of the hammer velocity and measured values of the reference key velocity but also a reference table expressing a relation between measured values of hammer velocity and target values of reference key velocity through experiments, and the velocity conversion table and reference table were stored in a suitable memory in the automatic player; the automatic player determines a playback table partially through an experiment and partially through transcription from reference table so as to drive the hammers without influence of unstable key motion at large loudness. | ||||||
| 126 | Key actuation systems for keyboard instruments | US10155629 | 2002-05-24 | US06888052B2 | 2005-05-03 | David Meisel |
| A key actuation system that is designed for use with a keyboard instrument of the type having multiple keys. Each key is pivotally supported and has a front end that is depressed by a player to play a note. The actuation system includes multiple actuators that are operable to move at least some of the keys. The actuators together include a block of ferromagnetic material with a surface with multiple bores defined in the surface. Each of the bores has a diameter. A winding is positioned in each of the bores. Each of the windings has a hole. A piston is provided at least partially in each of the holes, with each piston being in mechanical communication with one of the keys such that movement of the piston causes movement of the key. Each piston has a width. A ferromagnetic flux plate with multiple openings is positioned on the surface of the block of ferromagnetic material with the openings aligned with the bores. The openings each have a width that is less than the diameter of the bores, such that the flux plate partially closes off the upper end of each bore. When the windings are energized, the corresponding piston moves, thereby moving one of the keys. | ||||||
| 127 | Storage medium containing musical score displaying data, musical score display apparatus and musical score displaying program | US10669782 | 2003-09-24 | US20040069115A1 | 2004-04-15 | Satoshi Hiratsuka; Shuichi Matsumoto |
| Musical score displaying data include note or musical score information indicative of a note or musical score symbol to be displayed, position information indicative of a display position on a musical score where the note or musical score symbol is to be placed, and attribute information designating any one of a plurality of musical stave rows where the note or musical score symbol is to be displayed. Note or musical score marks of a same performance part can be displayed across two musical staves, by determining any one of the plurality of musical stave rows where the note or musical score symbol is to be displayed in accordance with the attribute information. In another aspect, the musical score displaying data include at least one of first attribute information for variably controlling the display position of the note or musical score symbol in a horizontal direction and second attribute information for variably controlling the display position of the note or musical score symbol in a vertical direction. With such first and second attribute information, the display position of the note or musical score symbol can be changed to an easier-to-view position. | ||||||
| 128 | Method and recognizing music and computer-readable recording medium having music-recognizing program recorded therein | US09380225 | 1999-11-15 | US06580805B1 | 2003-06-17 | Seiji Nakano |
| A music score image is read, a two-valuing threshold is set based on a staff interval and a line width of the staff so as to input the music score image as a two-valued image, then music signs are recognized to prepare data for playing and/or music score displaying. With this arrangement, the image two-valuing threshold which seriously affects the recognition rate can be automatically set to an optimum value for the recognition. | ||||||
| 129 | Keyboard musical instrument for exactly producing tones and hammer sensor varying output signal exactly representing physical quantity of hammer | US10002262 | 2001-11-14 | US06515213B2 | 2003-02-04 | Shigeru Muramatsu; Tsutomu Sasaki; Tadaharu Kato |
| A hammer sensor includes a photo-filter plate movable together with a hammer assembly and having a base plate fixed to the hammer shank and an arc pattern formed on the base plate and different in transparency from the base plate, a photo radiating element radiating a light beam toward the arc pattern and a photo detecting element disposed on the optical path of the light beam for converting the amount of transmitted light to an electric signal, wherein the photo-filter plate converts the rotational angle of the hammer assembly to the amount of light incident on the photo detecting element, and makes the photo radiating element and the photo detecting element stationary so that a suitable photo-shield case prevents the photo elements from environmental light. | ||||||
| 130 | Staff sheet printer | US10059134 | 2002-01-29 | US20020178897A1 | 2002-12-05 | Toshio Hayakawa |
| The purposes of this staff sheet printer (100) is to translate played acoustic sound into music notes as music staff sheets (60) by having a plurality of sensors attached on an acoustical musical instrument. Conventionally, a music teacher listens while a musical instrument player plays. To check skill of novice players requires to have well-trained music teachers. Using newly invented staff sheet printer (100) can check their skills easily since it can print played notes as exactly as players play acoustic musical instruments. Once it prints, the musical instrument players can check visually whether correct keys are played or not, by comparing the output staff sheets (60) and the original music sheets. | ||||||
| 131 | Method and apparatus for sensing, controlling and recording key motion in a keyboard musical instrument | US09482484 | 2000-01-12 | US06472589B1 | 2002-10-29 | Charles R. Lee |
| A device and related method for detecting, controlling, and recording keyboard motion in which individual magnets, sensors and actuators associated with each key capture and re-produce key motion with a high degree of accuracy. The method uses a non-contact sensing assembly technique that requires no mechanical or electrical connections with the keyboard assembly, thus making the device easy to service and install. The method also uses a mathematical algorithm to adjust actuator key movement at a very rapid rate making it possible to install in a variety of pianos with different key weights and still be able to play with high accuracy. Finally, the device system dynamically maps the keyboard to which keys are in playback mode and which are in record mode, allowing the use of both modes simultaneously, thus letting the player add to (layer) performances. | ||||||
| 132 | Jig for aligning shutter with photo couplers and key and assembling method using the same | US09754780 | 2001-01-04 | US06407321B2 | 2002-06-18 | Takashi Tamaki; Katsuo Itou |
| A jig is used in an assemblage between key sensors and an acoustic piano, and the jig has a shutter guide assembled with a casing of optical sensor array for aligning slits with target trajectories of shutter plates and pieces of adhesive double coated tape adhered to the shutter plates for aligning the shutter plates with associated white/black keys, wherein the shutter plates are inserted into the slits so that the shutter plates are placed on the target trajectories, and the white/black keys are moved along the target trajectories until they are brought into contact with the pieces of adhesive double coated tape for temporality tacking the shutter plates to the associated white/black keys. | ||||||
| 133 | Keyboard musical instrument faithfully reproducing original performance without complicated tuning and music data generating system incorporated therein | US09737615 | 2000-12-13 | US06403872B2 | 2002-06-11 | Shigeru Muramatsu; Yasuhiko Oba; Tadaharu Kato; Kiyoshi Kawamura |
| An automatic player piano is an acoustic piano equipped with a data acquisition system and a playback system, and the data acquisition system monitors the hammers with hammer sensors for producing a set of music data codes representative of a performance on the keyboard, wherein the hammer sensor has a detectable range over the trajectory of the associated hammer so that the data acquisition system obtains pieces of music data accurately representative of the trajectory of hammer to be required for a faithful reproduction of the original performance. | ||||||
| 134 | Music staff sheet-printing device for practicing musical instruments | US09866220 | 2001-05-25 | US20010045151A1 | 2001-11-29 | Toshio Hayakawa |
| The purposes of this device (100) is to convert and print mechanical strokes of music instruments onto papers as five-line music sheets (60) by sensing motion of mechanical strokes played by a musical instrument player. A typical application for this newly invented device is to monitor key stokes of an acoustic piano (10) played by a musical instrument player. Conventionally, a music teacher listens while the musical instrument player plays the piano. To check skill of novice and beginner players require to have well-trained music teachers. Using this newly invented printing device for musical instruments can check their skills by printing music notes played by them since this device (100) can store and print key stokes as the five-line music sheets (60). Once it prints as the five-line music sheets (60), the musical instrument players can check visually whether correct keys are pressed or not, by comparing the output printed out (60) by the device (100) and original music sheets. | ||||||
| 135 | Keyboard musical instrument faithfully reproducing original performance without complicated tuning and music data generating system incorporated therein | US09737615 | 2000-12-13 | US20010003945A1 | 2001-06-21 | Shigeru Muramatsu; Yasuhiko Oba; Tadaharu Kato; Kiyoshi Kawamura |
| An automatic player piano is an acoustic piano equipped with a data acquisition system and a playback system, and the data acquisition system monitors the hammers with hammer sensors for producing a set of music data codes representative of a performance on the keyboard, wherein the hammer sensor has a detectable range over the trajectory of the associated hammer so that the data acquisition system obtains pieces of music data accurately representative of the trajectory of hammer to be required for a faithful reproduction of the original performance. | ||||||
| 136 | Method and apparatus for real-time correlation of a performance to a musical score | US15004 | 1998-01-28 | US06166314A | 2000-12-26 | Frank M. Weinstock; George F. Litterst |
| The invention relates to a computerized method for correlating a performance, in real time, to a score of music, and a machine based on that method. A score processor accepts a score which a user would like to play and converts it into a useable format. Performance input data is accepted by the input processor and the performance input data is correlated to the score on a note-by-note basis. An apparatus for performing this method includes an input processor that receives input and compares it to the expected score to determine whether an entire chord has been matched, and an output processor which receives a note match signal from the input processor and provides an output stream responsive to the match signals. | ||||||
| 137 | Method and apparatus for midifying vintage organs and pianos | US679926 | 1996-07-15 | US5763806A | 1998-06-09 | Raymon A. Willis |
| A system for rejuvenating old keyboard instruments has an array of key sensor switches which are individually adjustable in a horizontal plane to accommodate varying angulations of the keys behind the balance rail of the keyboard and each key sensor switch includes a friction retained sensor probe which enables a rapid and accurate accommodation of uneven keys. | ||||||
| 138 | Keyboard musical instrument equipped with pedal sensor for discriminating half pedal at high resolution | US131075 | 1993-10-01 | US5523522A | 1996-06-04 | Shinya Koseki; Jun Yamamoto |
| A player fingers on the keyboard of an automatic player piano and steps on the soft and damper pedals for variety of musical expression in a recording mode, and a controller drives actuators associated with the keys and the pedals as if the player performs, wherein the controller sequentially checks a digital locational signal to see whether or not transit points indicated by the digital locational signal characterize the locus of the plunger and stores digital locational codes indicative of the characterizing transit points only, thereby improving the faithfulness of the performance without sacrifice of the amount of stored data. | ||||||
| 139 | Musical key determining device | US117977 | 1993-09-07 | US5424486A | 1995-06-13 | Eiichiro Aoki |
| Melody and chord information of a music piece are supplied. On the basis of the chord information, one or more possible musical keys are nominated. Then, on the basis of the melody information, it is judged in a collating manner whether it is proper to determine any of the possible musical keys as a musical key of the music piece. For instance, the possible musical keys are nominated on the basis of detection of a dominant motion, since the dominant motion in a chord progression strongly suggests specific musical keys. For instance, of the nominated possible musical keys, those which do not contain all of the melody notes as their scale note are excluded, and a single musical key which contains all of the melody notes as its scale note is determined as the musical key of the music piece. With such arrangements, it is allowed to make a musical key determination which is very reasonable from a musical point of view. | ||||||
| 140 | Method and device for converting source piano playing data for automatic playing piano | US904172 | 1992-06-25 | US5357047A | 1994-10-18 | Yoshimasa Isozaki; Shinya Koseki |
| Converting method comprising a detecting step for detecting a movement of an action of a piano, calculating step for calculating playing data depending on the movement of the action, correcting step for correcting at least string-striking intensity data in the automatic playing data based on the compared result playing data, recording step for recording the corrected data as the automatic playing data. Furthermore, converting device comprises detecting member for detecting a position of a hammer, calculating member for calculating playing data depending on a position of a hammer, correcting member for correcting the playing data, recording member for recording the corrected data, and driving member for driving a key. The method and device compensates the errors of playing data resulted by a difference of a piano's type or by changing shape of parts in an action, because data is corrected by ratios of lengths of the parts of the piano. | ||||||
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