| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 141 | Keyboard musical instrument hammer movement detection apparatus | US722001 | 1991-06-27 | US5194685A | 1993-03-16 | Kiyoshi Kawamura; Shigeru Muramatsu |
| A hammer movement detection device for detecting the movement of a hammer which strikes strings provided for each key of a keyboard musical instrument. The hammer movement detection device radiates light onto a hammer shank which moves with the hammer and detects at least the displacement of the hammer shank based on the light reflected from the hammmer shank. The movement detection device may be attached to a shank rail which supports the hammer shank in a freely rotatable manner. The hammer movement detection device may be supported using a fixed member which is supported above the hammer shank and below the pin board which is connected to the frame which supports the strings which are struck by the hammer. | ||||||
| 142 | Method for automatically transcribing music and apparatus therefore | US315761 | 1989-02-27 | US5038658A | 1991-08-13 | Schichirou Tsuruta; Yosuke Takashima; Masaki Fujimoto; Masanori Mizuno |
| An automatic music transcription method and system for generating a muscial score from an input acoustic signal. The acoustic signal may include vocal songs, vocal humming, and music from musical instruments. The system comprises means for extracting pitch information and power information from the input acoustic signal, for correcting the pitch information based on the deviation of the acoustic signal relative to an absolute musical scale, for dividing the acoustic signal into a set of single-sound segments using the corrected pitch information, dividing the acoustic signal into a second set of single-sound segments this time using changes in the power information, for dividing the acoustic signal in still greater detail using information contained in both previous segmentations, for associating each segment with a musical interval of an absolute musical scale, and for determining single-sounds segments depending on whether or not the musical intervals of adjacent segments are identical, for determining the key of the acoustic signal, for correcting the placement of the segments on the musical scale of the determined key using the pitch information, for determining the time and tempo of the acoustic signal using this placement, and for compiling musical score data using the determined musical scale, sound length, key, time, and tempo of the acoustic signal. | ||||||
| 143 | Tempo monitoring device and associated method | US373686 | 1989-06-30 | US5036742A | 1991-08-06 | Phillip M. Youakim |
| A device and method for monitoring the tempo of an instrument generating tempo beats involves the sensing of each tempo beat, measuring the time interval between successive beats, dividing the time interval into a minute, and visually indicating the measured beats/min. between each two successive beats. The device includes a piezo transducer for sensing the beats, an electronic timer for measuring the time interval between each two successive beats, and a display associated with the timer for visually displaying the measured beats/min. time interval. The device thus provides visual feedback to a musician or user of the tempo of the instrument being played. | ||||||
| 144 | Performance data processing apparatus | US499219 | 1983-05-31 | US4602544A | 1986-07-29 | Shigeru Yamada; Koichi Kozuki; Tatsuhiro Koike |
| Performance data is comprised of a successive serial arrangement of note data formed with paired pitch data and note duration data and of rest data formed with only rest duration data and having no pitch data. A performance data processing apparatus judges whether a rest datum following a note datum is shorter than a predetermined duration, and in case the result of this judgment if YES, the apparatus integrates the rest datum and the note datum preceding the rest datum into an integrated note datum having a note pitch of the note datum and a note duration which is equal to the sum of the duration of the note datum and the duration of the rest datum, whereby, in case a music score is displayed or printed out based on the performance data, rests having a duration shorter than the predetermined duration are eliminated to prolong the duration of the respective preceding notes each by an amount of the duration of the eliminated rest. Thus, there is obtained a music score having inscriptions similar to those of an ordinary music score, and also there can be reproduced a performance which is free of an unnatural sense. | ||||||
| 145 | Apparatus for printing out graphical patterns | US525607 | 1983-08-22 | US4538500A | 1985-09-03 | Koichi Kozuki; Tatsuhiro Koike |
| A musical score printing apparatus comprises: storing means for storing a musical score data; read-out controlling means for successively reading out the musical score data from the storing means; converting means for converting the musical score data read out from the storing means to a musical score print and paper feed data; and printing means for printing out the musical score on a printing sheet based on the musical score print and paper feed data delivered from the converting means, wherein arrangement is so provided that where printing of a musical score is suspended at halfway of a measure block and thereafter a reprint command is given, the printing of the musical score is resumed from the beginning of the measure block in which the suspension of the printing has been taking place. | ||||||
| 146 | Method of processing data for musical score display system | US504395 | 1983-06-15 | US4506587A | 1985-03-26 | Kazurou Tanaka |
| There is disclosed a method of processing data for a musical score display system for displaying a musical score in accordance with depression of keys on a keyboard of a musical instrument. Key information containing a key depression timing, a key release timing and a name of key is detected with respect to two keys depressed one after another. When a period between the key depression timings of the two keys is very short, the two keys are displayed as depressed simultaneously. When the succeeding key is depressed before release of the preceding key and the difference in depression timing of the two keys is greater than a certain period, a rest note is displayed before a musical note corresponding to the succeedingly depressed key. | ||||||
| 147 | Method of processing performance data | US498780 | 1983-05-27 | US4485716A | 1984-12-04 | Tatsuhiro Koike |
| When a player plays a musical piece on a keyboard of a musical instrument, the instrument provides an event datum at every event of the key depression and key release. The event datum includes information on the time of such depression or release and information on the note pitch. Thus a sequential train of these event data constitutes performance data which represents the progression of the music actually played. According to a reference tempo clock, a barline datum indicative of the time for a barline is provided at every period of a time length which defines a measure. Where the performance data exhibits the existence of a note pitch at the time of the barline and then if the time difference between the barline timing and the immediately preceding event is shorter than a predetermined time length, the performance data is adjusted so that this preceding event should fall on the barline timing, but if not shorter and then if the time difference between the barline timing and the immediately succeeding event is shorter than a predetermined time length, the performance data is adjusted so that this succeeding event should fall on the barline timing. Where the performance data exhibits the non existence of a note pitch at the time of the barline and if the time difference between the barline timing and the immediately succeeding event is shorter than a predetermined time length, the performance data is adjusted so that this succeeding event should fall on the barline timing. Thus, there is obtained adjusted performance data free from unintended and unnecessarily precise locations of barlines with respect to notes and rests. | ||||||
| 148 | Keyboard input coding device and musical note displaying device | US403633 | 1982-07-19 | US4476767A | 1984-10-16 | Ritsu Katsuoka |
| This invention relates to a keyboard input coding device comprising a counter for counting ON and OFF duration of signals obtained by pushing a keyboard, an encoder for producing codes of musical interval corresponding to keys of the keyboard, a note-length discriminating circuit for taking count values from the counter based on signals from the keyboard and discriminating a note-length, a note-length memory circuit for receiving or supplying the note-length data from or to the note-length discriminating circuit, a reference time generating circuit for supplying the note-length discriminating circuit with data of partitioning a musical section and a processing control circuit, wherein the discrimination of the note-length is effected by referring to the note-length between sequential notes according to data stored in the memory circuit, thereby a musical note with a note-length to agree well with intention of an operator is coded after correcting the key input duration data according to estimates made from the relation of the note-length between sequential notes, and also to a musical note displaying device comprising a CRT display, a character ROM, a video RAM and a timing circuit for these circuits, wherein an additional note-chaining circuit is provided to take musical note data outputted by the keyboard input coding device, note-chaining data (musical interval) between sequential two musical notes and note-chaining pattern selecting data in the musical note data and to generate note-chaining pattern corresponding to musical note position, and the note-chaining pattern data generated from the additional note-chaining circuit and the musical note pattern of the character ROM are superposed so as to produce a chained note thereby a musical note is displayed at pattern which can be clearly seen as a staff. | ||||||
| 149 | Apparatus for recording and reproducing musical performance | US396360 | 1982-07-08 | US4419920A | 1983-12-13 | Ichiro Ohe |
| Not only an image signal of a scene of performance of musical instruments and a sound signal of such performance, but also the performance data of a specific musical instrument are recorded by a video system, and by virtue of a reproduction of this record, the image signal, the sound signal and the performance data are separated from each other. Thus, not only the image from the image signal and the electronically reproduced sound from the sound signal, but also a real automatic playing musical instrument such as player piano corresponding to said specific musical instrument is actually driven to effect a performance, whereby the watcher-listener is also able to listen to the performance sound of a real musical instrument. | ||||||
| 150 | System for transcribing analog signals, particularly musical notes, having characteristic frequencies and durations into corresponding visible indicia | US101102 | 1979-12-07 | US4392409A | 1983-07-12 | Peter Coad, Jr.; David E. Wilensky |
| A system for transcribing a sequence of input analog signals having characteristic frequencies and durations into indicia which visibly reflect the frequencies and durations of the input analog signals. The system uses the principles that the frequency of an analog signal can be determined from the number of zero crossings the signal makes in a predetermined time period and that the durations of the input analog signals can be determined from the number of successive time periods that the determined frequencies remain the same.In the preferred embodiment, the system transcribes successive musical tones into corresponding musical notes. A microphone produces electrical signals corresponding to the musical tones and a frequency digitizer circuit produces a digital signal train comprising a digital pulse for each zero crossing of the electrical signals. A counter counts the number of pulses in the digital signal train and, at predetermined time intervals, a timer transfers the contents of the counter to a count buffer to store as counts the frequencies of the musical tones during each time interval. A programmed digital computer accesses the counts in the count buffer and determines the frequency of each musical tone from the values of its corresponding counts and the duration of each tone from the number of successive counts of the same value. The digital computer also produces an indicia code reflecting the frequency and duration of each note. From the indicia codes, a printer produces, on an output medium, the musical notes in their proper positions on a musical staff. | ||||||
| 151 | Envelope generator | US839912 | 1977-10-06 | US4178826A | 1979-12-18 | Teruo Hiyoshi; Akira Nakada; Tsutomu Suzuki; Eiichiro Aoki; Eiichi Yamaga |
| An envelope generator comprises a counting circuit and counting control means capable of controlling a counting mode of the counting circuit, i.e., operation and non-operation of the counting circuit, counting speed, addition and subtraction etc., in accordance with an envelope shape to be obtained. There are various predetermined counting modes corresponding to different envelope shapes and the envelope generator includes selection means for causing the counting control means to select a desired one of the counting modes. | ||||||
| 152 | Method and apparatus for encoding of expression while recording from the keyboard of an electronic player piano | US828068 | 1977-08-26 | US4172403A | 1979-10-30 | Joseph M. Campbell; Larry J. Minyard |
| There is disclosed a method and apparatus for encoding of expression while recording from the keyboard of an electronic player piano wherein the intensity of the music being recorded is reflected in variations in the power of the acoustic waveform produced thereby. There is a delay between the time the key is struck and the time that the note is sounded or heard by the listener. The apparatus measures the changes in power by performing a digital integration of a waveform. The key note or key switch actuations are multiplexed and a serial bit stream of data and stored in a shift register and then combined with the expression data bits to form the data stream which is encoded in a bi-phase encoder to be recorded on tape. | ||||||
| 153 | Method and apparatus for reproducing a musical presentation | US681093 | 1976-04-28 | US4132142A | 1979-01-02 | Joseph M. Campbell |
| There is disclosed a method and apparatus for reproducing a musical presentation wherein musical data, from such presentation, such as keyboard actuations of a keyboard-type musical instrument, is encoded and stored in a code which has information contained in the transitions only and the sense and direction of such transitions are ignored. This avoids several major drawbacks of bi-phase level code previously disclosed in the prior art because the (1) phase of the signal need not be maintained and, (2) the bi-phase level code cannot be recovered following a dropout until a 1-0 or a 0-1 transition occurs.There is also disclosed a data dropout detection system for assuring that the wrong music is not played. | ||||||
| 154 | Audio-visual method and apparatus for teaching melody and chord manipulation of keyboard musical instruments | US48187974 | 1974-06-21 | US3897710A | 1975-08-05 | SCHMOYER ARTHUR ROBERT |
| A device for teaching operation of a keyboard musical instrument includes indicator lights associated with melody keys and both a changeable pictorial image and light indicators associated with the chord keys. A program of audio instructions includes cue signals for operating the melody key indicators and for changing the pictorial image. The chord key indicators are, however, activated not from the program but from indicia at the pictorial image producer. A color association is established between the chord indicator lights and the pictorial image.
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| 155 | Piano instruction device | US3719118D | 1971-07-13 | US3719118A | 1973-03-06 | COLBURN J |
| COMBINATIONS OF NOTES ON THE SCALE AND/OR KEYS ON THE KEYBOARD FOR A PRESELECTED PERIOD OF TIME. THE KEYBOARD AND PEDALS OF THE INSTRUMENT IF DESIRED, ARE ADAPTED TO INTERRUPT THE FLASHING NOTE-LIGHTS AND KEY-LIGHTS TO DISPLAY A CONTINUOUSLY LIGHT ONLY WHEN THE CORRECT KEY OR PEDAL IS DEPRESSED.
A DEVICE TO TEACH PUPILS TO READ MUSIC AND IDENTIFY NOTES ON A KEYBOARD INSTRUMENT AND PROMOTE EFFICIENCY IN THE PERFORMANCE OF MUSICAL EXERCISES IS PRESENTED. THE DEVICE INCLUDES A SCALE REPRESENTATION VISUALLY DISPLAYING NOTES AS FLASHING LIGHTS, A KEYBOARD REPRESENTATION VISUALLY DISPLAYING KEYS TO BE PLAYED AS FLASHING LIGHTS SAID REPRESENTATIONS SELECTIVELY CONTROLLED BY AN ELECTROMECHANICAL SIGNAL DEVICE FOR SUCCESSIVELY DISPLAYING PRESELECTED |
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| 156 | Music teaching machine | US3577824D | 1969-05-13 | US3577824A | 1971-05-04 | LAVAN LAWRENCE P |
| A music teaching machine produces small lighted areas on a screen having musical notations in response to depressions of the keys of an associated musical instrument. The lights are color coded and physically positioned to indicate the sets of notes constituting major thirds and minor thirds. A movie picture projector, lens system, and a mirror are arranged to project notes, to be played, on the same screen.
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| 157 | Method and apparatus for generating electric currents of small magnitude | US3457463D | 1965-07-07 | US3457463A | 1969-07-22 | BALAMUTH LEWIS |
| 158 | Musical score, and means for reading this score, particularly designed for teaching a musical instrument | US38928964 | 1964-08-13 | US3369439A | 1968-02-20 | ERNEST BURDET |
| 159 | Device for producing typed records of musical compositions | US54237455 | 1955-10-24 | US2805596A | 1957-09-10 | PHYSIOC LEWIS W |
| 160 | Music writing machine | US45348530 | 1930-05-19 | US1847282A | 1932-03-01 | UNDERWOOD GATES E |
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