JP3843858B2 - Note display control device and note display control program - Google Patents

Description

従って、図６（ｃ）に示すように、表示可能範囲は、73.5〜80.5となる。
【００３４】
この手法Ａでは、所定期間内の音符群の音長に基づいて音高を重み付けしていることから、曲の流れの中でより重要な音符（音長が長い）が優先的に表示されることになり、曲の流れをつかみやすい。ただし、演奏進行上の現時点で入力された音符であっても、その音長が短ければ表示できない場合がある。
手法Ｂでは、過去の所定期間内の音符群を検索し、最高音高と最低音高の中間音高を代表音高とする。
図示の例では、最低音高が74、最高音高が80であるので、
中間音高＝（74＋80）÷2＝77となる。
この手法Ｂでは計算が非常に簡単である。ただし、演奏進行上の現時点で入力された音符であっても、その音高が代表音高から離れすぎていれば表示できない場合がある。
【００３５】
図７は、２音符目以降の処理の第２の例の説明図である。
図７（ａ）はフローチャート、図７（ｂ）は演奏進行上の現時点において音符が入力されたときに、音符表示領域６を修正しない場合の、図７（ｃ）は音符表示領域６を修正した場合の、音符表示領域６を示す説明図である。
Ｓ８１において、演奏進行上の現時点において入力された音符の音高データを、例えば、入力音符の発音終了時点において取得する。
Ｓ８２において、新規入力音符の音高が音高表示範囲８内にあるか否かを判定する。そうであればこの新規入力音符に関する処理を終了し、そうでなければＳ８３に処理を進める。
Ｓ８３においては、入力音符を含む過去の所定期間内にある音符群の音高に基づいて、新規入力音符は必ず表示されるように、新規入力音符の音高を最高音高または最低音高とするような音高表示範囲８を計算する。
すなわち、演奏中における新規の音符の音高が、音高表示範囲８を超えるときには、新規の音符が最高音高の音符として表示されるように音高表示範囲８の位置を平行移動させ、音高表示範囲未満のときには、新規の音符が最低音高の音符として表示されるように音高表示範囲８を平行移動させる。音符表示領域６の表示幅および音高表示範囲８の幅は変えない。
Ｓ８４において、音高表示範囲８を修正した音符表示領域６を作成して、この新規入力音符に関する処理を終了する。
【００３６】
図７（ｂ）において、音高表示範囲が仮に72〜79である状態において、所定期間内に音符Ａ〜Ｈがあり、新規に音符Ｉが入力された場合を示している。
新規入力された音符Iの音高は80であるので、音高表示範囲８を超えている。
したがって、音符Ｉの音高が最高音高の音符として表示されるように、図７（ｃ）に示されたように、音高表示範囲８を平行移動させて、例えば、音高表示範囲を73〜80にする。
【００３７】
図８は、２音符目以降の処理の第３の例のフローチャートである。
Ｓ９１において、演奏進行上の現時点において入力された音符の音高データを、例えば、入力音符の発音終了時点において取得する。後述するＳ１０３における代表音高の計算に、音長を用いる場合は、これも取得する。
Ｓ９２において、入力音符の音高が音高表示範囲８内にあるか否かを判定する。そうであればＳ９３に、そうでなければＳ９４に処理を進める。
Ｓ９４において、入力音符を含む、過去の所定期間内にある音符群の中で最高音高と最低音高とを検索する。
Ｓ９５において、最高音高と最低音高との差である最大音高差を計算する。
【００３８】
Ｓ９６において、この最高音高から最低音高までを表示できるように音高表示範囲の幅を変更する。ただし、音符表示領域６の表示幅は変えない。
その際、音高表示範囲の中心は、入力音符を含む演奏データの過去の所定期間内にある音符群に基づいて、既に図６を参照して説明したような、手法Ａまたは手法Ｂ等の代表音高になるように制御する。手法Ａの場合は、所定期間内の音符群の各音高を、各音符の長さで重み付けした平均値とする。手法Ｂの場合は、所定期間内の音符群の中の最高音高と最低音高との中間値とする。
Ｓ９７において、音高表示範囲を修正した音符表示領域６を作成して、この新規入力音符に関する処理を終了する。オペレーティングシステム・プログラムは、作成された音符表示領域６を表示器３に表示させる。
【００３９】
一方、Ｓ９２において、入力音符の音高が音高表示範囲８内にあるときに進められるＳ９３，Ｓ９８においては、Ｓ９４，Ｓ９５と同様の処理がなされる。
Ｓ９９において、最大音高差に比べて［音高表示範囲の幅］の［最大音高差」に対する比率を計算する。
Ｓ１００において、この比率が、所定値、例えば２倍以上であるか否かを判定する。２倍以上であればＳ１０１に処理を進め、そうでなければ、この新規入力音符に対する処理を終了し、音高表示範囲を保持する。
ここで、２倍以上であるということは、音高表示範囲８の幅の半分にしか音符群が分布していないことを意味する。そこで、表示される音高間の幅が拡大表示されるようにして音符を見やすくする。
【００４０】
Ｓ１０１において、音高表示範囲８の幅を、所定値、例えば２５％小さくする。ただし、音符群が音高表示範囲内に入り得る限度内で、音高表示範囲の幅を小さくする。音符表示領域６の表示幅は変えない。
Ｓ１０２において、新規入力音符の音高を含む過去の所定期間内の音高に基づいて、図６を参照して説明した代表音高を計算する。
Ｓ１０３においては、代表音高を中心とする音高表示範囲８を計算する。
Ｓ１０４においては音高表示範囲８を修正した表示画面を作成して、この新規入力音符に関する処理を終了する。オペレーティングシステム・プログラムは、作成された音符表示領域６を表示器３に表示させる。
なお、上述したＳ９５，Ｓ９６、あるいは、Ｓ９８〜Ｓ１０２においては、音高表示範囲の幅を先に設定してから代表音高が音高表示範囲８の中心になるように制御している。これに代えて、代表音高を先に計算し、この代表音高が音高表示範囲８の中心になるようにして、新規入力音符を含む、過去の所定期間内の最高音高から最低音高までが表示されるように、音高表示範囲の幅を制御するようにしてもよい。
【００４１】
図９は、図８に示した、音符表示の開始動作に続く２音符目以降の音符表示動作の第３の例の説明図である。
図９（ａ）は演奏進行上の現時点における音符が入力されたときに、音符表示領域６を修正しない場合の、図９（ｂ）は修正した場合の、音符表示領域６を示す。
図９（ｃ）は演奏進行上の現時点における音符が入力されたときに、音符表示領域６を修正しない場合の、図９（ｄ）は修正した場合の、音符表示領域６を他の例を示す。
図９（ａ）の例では、音高表示範囲が仮に72〜79（スケール8）である状態において、所定期間内に音符Ａ，Ｂ，Ｃがあり、新規に音符Ｄが入力された場合を示している。
音符Ａは音高が79、音符Ｂは音高が76、音符Ｃは音高が72である。新規入力音符Ｄの音高が81であるので、音高表示範囲８を超えている。
従って、図８のＳ９７において、音符Ｄの音高を最高音高、音符Ｃの音高を最低音高とする、修正された音高表示範囲72〜81の音符表示領域６が作成される。音高表示範囲８の幅は拡大されて、スケール10となる。
【００４２】
一方、図９（ｃ）の例では、音高表示範囲が仮に73〜80（スケール8）である状態において、所定期間内に音符Ｂ，Ｃ，Ｄがあり、新規に音符Ｅが入力された場合を示している。
音符Ｂは音高が76、音符Ｃは音高が74、音符Ｄは音高が76である。新規入力音符Ｅの音高が74であるので、Ｓ９２からＳ９３に進み、Ｓ９８において最大音高差＝2が計算される。音高表示範囲８のスケール＝8であるので、Ｓ９９において比率＝4が計算されるので、Ｓ１０１において、音高表示範囲８をスケール＝6とする。
代表音高は、手法Ａ、手法Ｂともに、75となる。従って、音高表示範囲は72.5〜77.5となる。
音高表示範囲８の幅は、原則として、上述したＳ９６において拡大され、Ｓ１０１において縮小され、演奏の進行とともに、拡大と縮小とを任意に繰り返す。しかし、Ｓ１００における比率の閾値とＳ１０１における縮小率との関係で、Ｓ９６において縮小される場合もある。
【００４３】
図５ないし図９を参照した動作説明では、演奏進行上の現時点において、入力音符の終端（ノートオフ）が入力されたときに、その音高、または音高および音長を取得して計算を行い、音高表示範囲８の制御を行った。これに対し手法Ｂのように、音長を考慮しない代表音高を用いる場合は、新規入力音符の始端（ノートオン）で、音高表示範囲８を決定することができる。
上述した説明では、音高表示領域６の表示幅（垂直方向）は所定値に予め設定されて、変化させないことを前提にしていた。しかし、この表示幅を変更することにより、見えない音符を見えるようにしてもよい。
すなわち、演奏中に入力された音符の音高が音符表示領域の音高表示範囲内にないときには、演奏中に入力された音符を含む、演奏データの所定期間内に含まれた音符群の音高に応じて、音符群が音高表示範囲内に入るように音符表示領域の音高方向の表示幅を変更する。演奏中に入力された音符の音高が音高表示範囲内にあり、かつ、音符群の中の最大音高差に比べて音高表示範囲の幅が所定値以上であるときには、音符群の音高に応じて、音符群が前記音高表示範囲内に入り得る限度内で、音符表示領域の音高方向の表示幅を小さくすればよい。
本発明は、上述したピアノロール・ウインドウやスタッフ・ウインドウに限らず、一方の座標軸に時間に相当する情報、もう一方の座標軸に音高に相当する情報を表示する、任意の音符表示領域の音符表示制御に適用できる。音符の表示を、例えば、音名あるいは階名によって、絵柄や色が異なる表示にしてもよい。
上述した説明では、パーソナルコンピュータや電子楽器で実現する場合について説明したが、カラオケ装置、ゲーム装置、携帯電話端末等に備えられた表示器に音符を表示させる場合についても同様に適用できる。
【００４４】
【発明の効果】
本発明は、上述した説明から明らかなように、入力された音符の音高を考慮して音高表示範囲を決定するため、入力された音符や、入力された音符を含む所定期間内の音符を、できるだけ見えるようにしたり、常に見えるようにしたりすることができるという効果がある。
【図面の簡単な説明】
【図１】 本発明の実施の一形態のブロック構成図および音符表示領域の説明図である。
【図２】 本発明の実施の一形態を実現するためのハードウエア構成の一例を示すブロック図である。
【図３】 図２中のRAMに記憶されるプログラムやデータの説明図である。
【図４】 音符表示制御装置の全体動作を示すフローチャートである。
【図５】 音符表示の開始動作の説明図である。
【図６】 ２音符目以降の処理の第１の例の説明図である。
【図７】 ２音符目以降の処理の第２の例の説明図である。
【図８】 ２音符目以降の処理の第３の例のフローチャートである。
【図９】 図８に示した第３の例を説明するための説明図である。
【図１０】 従来の音符の可視表示の具体例を示す説明図である。
【符号の説明】
１…音高表示範囲決定部、２…音符表示位置制御部、３…表示器、４…仮想画面、５…音符、６…音符表示領域、７…表示期間、８…音高表示範囲[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a note display control for receiving performance data from a keyboard or a music data storage device and displaying a note of the performance data on a display.
[0002]
[Prior art]
Piano roll display, staff display, and the like are used as a method for sequencer software to display performance data notes on the display.
FIG. 10 is an explanatory diagram showing a specific example of conventional note display.
FIG. 10A shows a piano roll window screen. Such a window screen is displayed inside the application window.
In the piano roll display, the musical note 5 is represented by a bar line (bar) indicating the sound length (gate time), displayed in time series in the horizontal direction, and arranged in the vertical direction in the order of the pitch (note number). . Reference numeral 111 denotes a pointer / line indicating the current time (song position) in the performance progress, and moves to the right as the performance time progresses. When the pointer / line 111 indicating the current point in the performance progress reaches the right end, the note display area 6 is switched so that the next display period is reached. Since the case where the music data is reproduced from the storage device is shown, the note 5 is also displayed on the future side of the pointer / line 111 indicating the current point in the progress of the performance.
FIG. 10B shows a staff window screen. In the staff display, the musical note 5 is represented by the musical symbol and displayed on the 5-line score.
[0003]
In the application window, the display range (horizontal width and vertical width) of the note display area 6 provided on the display screen is set small so that other windows can be displayed simultaneously. There is a case. In such a case, the width of the pitch display range (range from the upper limit to the lower limit of the displayable pitch) 8 is limited. Therefore, for all pitches and 88 keys, A₀(Note number 21) to C₈Up to (note number 108) cannot be displayed.
Suppose you want to record notes while playing the keyboard. When displaying the recorded note 5 in real time, if the position of the pitch display range 8 is too high or too low, it is inconvenient because the recorded note 5 cannot be seen, and the sound being recorded and reproduced cannot be visually confirmed. There was also anxiety.
[0004]
Therefore, conventionally, a window frame is provided, and the pitch display range 8 is scrolled by the buttons 112, 113, and 114 of the vertical scroll bar. Meanwhile, the display width of the note display area 6 is constant. However, the user had to make a manual adjustment before recording, which was troublesome.
In addition, when calling the recording start and the window open collectively, the pitch display range 8 cannot be adjusted immediately after the recording starts, and therefore the first recorded note 5 may not be visible. For this reason, since it is necessary to confirm the pitch of the song before recording starts, the beginner is confused.
The situation described above is the same when displaying the musical note 5 while reproducing the automatic performance data from the storage device. When playing the displayed note as an example, the note to be played is not visible.
In addition, when a user's singing voice is captured with a microphone and displayed while recording as a note, the pitch of his / her song is often not known, so the note cannot be displayed as expected.
[0005]
[Problems to be solved by the invention]
The present invention has been made to solve the above-described problems, and automatically determines a pitch display range so as to avoid a situation in which the pitch of a note goes out of the pitch display range and the note becomes invisible. It is an object of the present invention to provide a note display control device and a note display control program.
[0006]
[Means for Solving the Problems]
  According to the present invention, in the note display control device according to the first aspect of the present invention, in the note display area of the indicator, the notes included in the input performance data are changed to the pitch and timing of the notes, and the notes. Note display areaThe pitch displayed inOn the basis of the note display position control means for displaying at a position corresponding to the pitch and timing of the note, and according to the pitch of the note,Without changing the note display area itselfThe notes areNote display areaTo get insideDifference in pitch displayed in the note display areaTheIncrease or decreasePitchdifferenceIt has a determination means.
  Therefore, even if the preset display width of the note display area is narrow, it is possible to avoid a state in which the note cannot be seen..
  The pitch display rangeChangeTo doAs a specific method, firstly, there is parallel movement (scrolling). Since the pitch interval of the displayed note is changed, it is easy to see the note. Second, there is a change in the width of the pitch display range. Even if the pitch distribution of notes is too wide, it can be handled. Third, there is a change in the display width of the note display area. Even if the pitch distribution is too wide, it can be dealt with. However, if there is a window screen that is displayed at the same time, this window screen may be affected and lost. You may make it display a note combining these change methods arbitrarily. For example, a note is displayed by combining the change of the width of the pitch display range and the parallel movement.
  Increasing or decreasing the pitch difference displayed in the note display area in claim 1 described above means changing the width of the pitch display range.
  As for the display period, firstly, only notes at the present time during the performance progress can always be displayed, and second, notes during a predetermined period starting from the present time during the performance progress can always be displayed. Or thirdly, even when the display period is moved in parallel, the notes within the display period can be displayed without fail.
[0007]
  According to a second aspect of the present invention, in the musical note display control device according to the first aspect, the pitchdifferenceThe determining means is configured such that the pitch of the note input at the start of performance is the initial setting state.Note display areaWhen not insideWithout changing the note display area itself according to the pitch of the note.The notes areNote display areaTo get insideIncrease or decrease the pitch difference displayed in the note display area., The pitch of the note input at the start of the performance is in the initial setting state.Note display areaWhen it is inDifference in pitch displayed in the note display areaIs to hold.
  Therefore, it is possible to avoid a state in which a note cannot be seen at the start of performance.
  When a note is visible even in the initial setting state, the pitch display range is kept as it is and the change is reduced as much as possible, so the note display is not difficult to see.
  For example, if the pitch of the note input at the start of the performance is positioned at the center of the pitch display range, the note display area is easy to see, and if there is continuity of the pitch, it is input thereafter. Since it is highly possible that the notes can be seen while maintaining the pitch display range, the note display is not difficult to see from this point.
[0008]
  In invention of Claim 3,,soundIn the sign display control device,Within the note display area of the display unit, the notes included in the input performance data are converted into pitches and notes based on the pitch and timing of the notes and the pitch displayed in the note display area. The note display position control means for displaying at a position corresponding to the timing, and when the pitch of the note input during the performance is not within the note display area, the performance including the note input during the performance Displayed in the note display area so that the note group falls within the note display area without changing the note display area itself according to the pitch of the note group included within a predetermined period of data. Having a pitch difference determining means for increasing or decreasing the pitch differenceIs.
  Therefore,Even if the display width of the note display area is narrow, the pitch difference is changed and displayed by increasing / decreasing the pitch difference displayed in the note display area. As a result, it is possible to avoid a situation in which a note goes out of the pitch display range and cannot be seen. Even if the pitch distribution of notes is too wide, it can be handled.
[0009]
  In the invention according to claim 4, the claim3In the musical note display control device according to claim 1, the pitchdifferenceThe determining means determines that the pitch of the notes input during the performance isNote display areaWhen the above is exceeded, the notes input during the performance are displayed as the highest sound.Increase or decrease the pitch difference displayed in the note display area., The pitch of the notes input during the performance isNote display areaWhen the value is less than, the note input during the performance is displayed as the lowest note.Increase or decrease the pitch difference displayed in the note display areaTo do.
  Therefore, it is possible to reliably avoid the state where the input notes cannot be seen during the performance.
  Since the pitch of the note is not used in the calculation for changing the pitch display range, the pitch display range can be adjusted at the time of note-on of the note input during performance even when performance data is input in real time. Since the case where the pitch display range is moved is reduced as much as possible, the note display is not difficult to see.
[0010]
  In the invention according to claim 5,Claim 3 or 4In the note display controller, ActingThe pitch of the notes input during the performance isNote display areaIf not, the group of notes included in a predetermined period of the performance data including the notes input during the performancePitch ofIn response to theIt has a pitch center determining means for calculating a representative pitch and making the representative pitch the center of the pitch displayed in the note display area.Is.
  ThereforeSince the representative pitch is controlled to be the center of the pitch display range, the note group is displayed at an easy-to-see position.
[0011]
  In the invention according to claim 6, the claim3In the musical note display control device according to claim 1, the pitchdifferenceThe determining means determines that the pitch of the notes input during the performance isNote display areaCompared to the maximum pitch difference in the note group.Difference in pitch displayed in the note display areaIs greater than or equal to a predetermined value, depending on the pitch of the note group,Without changing the note display area itselfThe note group isNote display areaWithin the limits that can enterDifference in pitch displayed in the note display areaAnd the pitch of the notes input during the performance isNote display areaCompared to the maximum pitch difference in the note group.Difference in pitch displayed in the note display areaIs less than the predetermined value,Difference in pitch displayed in the note display areaIs to hold.
  Therefore, even if the notes input during the performance are displayed, the pitch display range is too wide compared to the distribution of the note group, in other words, when there is room, the width of the pitch display range is reduced. Since the interval between displayed pitches is enlarged, there is an effect that it becomes easy to see by ensuring the width of each note.
  On the other hand, when the pitch display range is not too wide compared to the distribution of the note group, the pitch display range is kept as it is and the width of the pitch display range is changed as much as possible, so the note display is not difficult to see .
[0012]
  According to the seventh aspect of the present invention, in the note display control program to be executed by the computer, in the note display area of the display unit, the notes included in the input performance data are changed to the pitch and timing of the notes, and the notes. Note display areaThe pitch displayed inOn the basis of the note display position control step to display at a position according to the pitch and timing of the note, and according to the pitch of the note,Without changing the note display area itselfThe notes areNote display areaTo get insideDifference in pitch displayed in the note display areaTheIncrease or decreasePitchdifferenceIt has a decision step.
  Therefore, the musical note display control apparatus according to claim 1 can be realized using a computer.
[0013]
  In the invention according to claim 8, in the musical note display control program to be executed by the computer, the displaysound ofWithin the note display area, the notes included in the input performance data are replaced with the pitch and timing of the notes.WritingMark display areaThe pitch displayed inBased on the note display position control step for displaying the note at a position corresponding to the pitch and timing of the note, and the pitch of the note input during performance is the note display region.In the regionIf not, according to the pitch of the note group included within a predetermined period of the performance data, including the notes input during the performance,Without changing the note display area itselfThe note group isNote display areaTo get insideDifference in pitch displayed in the note display areaTheIncrease or decreasePitchdifferenceIt has a decision step.
  Therefore, the claims3The musical note display control apparatus described in 1 can be realized using a computer.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
  FIG. 1 is an explanatory diagram of a block configuration and a note display area according to an embodiment of the note display control device of the present invention.
  FIG. 1A is a block diagram, in which 1 is a pitch display range determining unit, 2 is a note display position control unit, and 3 is a display.
  FIG. 1B is an explanatory diagram schematically showing a note display area. Portions similar to those in FIG. 10 are denoted by the same reference numerals and description thereof is omitted.
  The note display control device inputs performance data from the performance data providing unit.
  The note display position control unit 2 converts the pitches and timings of the notes included in the input performance data within the predetermined note display area 6 of the display 3 and the pitch display range of the predetermined note display area 6. 8 is displayed as “note 5” at a position corresponding to the pitch and timing of the note. Note that the display width of the note display area 6 is preset to a predetermined value in both the horizontal and vertical directions. Pitch display range determination section1Changes, for example, translates (scrolls) the pitch display range so that the notes fall within the pitch display range according to the pitch of the notes included in the input performance data.
[0015]
The operation will be described with reference to FIG. In the figure, 4 represents a virtual screen on which all notes are displayed, the horizontal axis represents time, measure, or beat number, and the vertical axis represents pitch (note number). Note that what is assigned to the horizontal axis and the vertical axis may be reversed. The note display area 6 displays a part of the virtual screen 6. The display period 7 moves in the direction of the arrow 9 as the performance progresses. As described with reference to FIG. 10, the display period 7 moves so as to be switched in units of several bars, and a pointer / line (111 in FIG. 10) indicating the current time in the performance progress is continuously displayed. Sometimes it moves.
The pitch display range determination unit 1 sets the pitch display range 8 based on the pitch of the notes of the performance data, or the pitch and the pitch so that the note 5 is displayed in the note display area 6. Translated in the direction indicated by arrows 10 and 11. When the movement speed is slow, the display contents in the note display area 6 appear to be scrolled in the vertical (vertical) direction, and if the movement is instantaneous, the display contents appear to be switched.
[0016]
When the pitch of the note input first at the start of performance does not exist in the pitch display range 8 in the initial setting state, the pitch display range 8 is moved in parallel so that this note is displayed. During the performance, by determining the position of the pitch display range 8 at a predetermined timing such as a timing for each note or a measure according to the passage of time and the progress of the performance, the state where the note 5 can be seen is continued as much as possible.
In the above description, the pitch display range 8 is translated in the vertical direction while keeping the width of the pitch display range 8 constant. Instead of this, the width of the pitch display range 8 may be changed. At that time, the boundary of the pitch display range 8 is moved.
[0017]
That is, when the pitch of the note input at the present time during the performance of the performance is not within the pitch display range 8 of the note display area 6, it is included within a predetermined period of the performance data including the note input during the performance. The width of the pitch display range is changed so that the note group falls within the pitch display range 8 according to the pitch of the note group.
When the pitch of the input note is within the pitch display range 8 and the width of the pitch display range 8 is greater than or equal to the maximum pitch difference in the note group, the note group The width of the pitch display range 8 is reduced within a limit that allows a group of notes to fall within the pitch display range 8 according to the pitch of the note, and the pitch of the input note is within the pitch display range 8. When the width of the pitch display range 8 is less than a predetermined value compared to the maximum pitch difference in the note group, the pitch display range 8 is held.
In this case, in the window screen shown in FIG. 10, since the display width (vertical width) of the note display area 6 is preliminarily set to a predetermined value, the display content of the note display area 6 is reduced. With expansion. However, it is only necessary to enlarge / reduce only the display width of the pitch difference while keeping the note 5 itself.
[0018]
In any of the cases described above, it is desirable that the notes of the current performance data on the progress of the performance can always be displayed in the predetermined note display area 6. It is preferable that notes of a predetermined period including the present time can be displayed. Here, the predetermined period is a past predetermined period starting from the present time.
When reading music data stored in advance in the storage device, it is possible to prefetch notes ahead of the present time in the performance progress. Therefore, the predetermined period is not a past predetermined period starting from the current new input pitch, but the pre-read period is set to a predetermined period from the current new input pitch, or the predetermined period including the pre-read and the past It is good. In addition, as shown in FIG. 10, the note display area 6 may switch the display period when the current timing in the performance progress reaches the right end. In such a case, the latest time point that precedes the display period 7 can be set as a starting point to be a predetermined period on the past side.
[0019]
The predetermined period may be about one measure, for example. It may be automatically adjusted to match the display period 7 or to 1.5 bars or 2 bars depending on the setting width of the display period 7, or it may be based on the current input note of interest. You may decide by the number of notes, such as up to the last five notes.
The processing for determining the pitch display range 8 may be performed every time a new note is input, or may be performed in units of a predetermined time such as one measure. More specifically, the control may be performed at the end of the note (note-off) across the end of the measure or across the measure line, or at the start or end of the first note of the measure.
The note display area 6 can be freely translated (scrolled) in the display period 7 by a button on the horizontal scroll bar regardless of the current timing position in the performance progress. When the stored music data notes are displayed and the display period is moved, the display period 7 is set as the “predetermined period” described above, and the pitch is set so that the notes in the display period 7 fall within the pitch display range. The display range may be changed.
[0020]
As a performance data providing unit, there is a keyboard that is actually played by a user. In this performance data, the timing itself at which a note is input becomes the timing data of this note.
As the performance data providing unit, there is a storage device such as a ROM (Read Only Memory), a semiconductor memory card, a hard magnetic disk or the like in which music data such as SMF (Standard MIDI File) format is stored. In this case, the music data includes timing data. Furthermore, as described in the prior art, the user's singing may be input and converted into musical note data for input.
[0021]
FIG. 2 is a block diagram showing an example of a hardware configuration for realizing one embodiment of the present invention. A case where a note display function is realized by installing an application program in a personal computer will be described.
In the figure, 21 is a bus, 22 is a CPU (Central Processing Unit), 23 is a ROM, and 24 is a RAM (Random Access Memory). Reference numeral 25 denotes a timer, which measures program interruption time, various times, and time. Reference numeral 26 denotes an operator such as a keyboard or a mouse. A display circuit 27 drives and controls the display 3.
28 is a sound source circuit, 29 is a D / A converter, and 30 is a sound system. Reference numeral 31 denotes an external storage device such as an HDD (hard magnetic disk drive), an FDD (flexible magnetic disk drive), an optical disk drive such as a CD-ROM (Compact Disc Read Only Memory), a semiconductor memory card, or the like. Reference numeral 32 denotes a MIDI (Musical Instrument Digital Interface) interface, which is connected to an external electronic keyboard instrument 33 and the like.
[0022]
The performance data is read from the ROM 23 or the external storage device 31 or input from an external electronic keyboard instrument 33 or the like and stored in the work area of the RAM 24.
A communication interface 34 is connected to a server on the Internet via a communication network 35, or connected to a server via a LAN (Local Area Network) or the like to input performance data in real time. Input a song data file (streaming or downloading).
[0023]
Under the control of the operating system program, the CPU 22 loads an application program stored in a hard magnetic disk, which is one of the external storage devices 31, to the RAM 24, and performs note display control. The program for performing note display control is used independently, and is executed by being incorporated in the sequencer software program. The application program is supplied via a CD-ROM or downloaded from a server on the communication network 35.
The tone generator circuit 28 generates a musical tone signal according to the performance data. The tone signal is converted into an analog waveform by the D / A converter 29, then supplied to the sound system 30 and output from the speaker.
In the configuration described above, the tone generator circuit 28 is provided. However, an external sound source device connected to the MIDI interface 32 may be used, or the sound source function may be executed by causing the CPU 22 to have a software sound source function.
Although the hardware configuration is different, it can also be realized in an electronic musical instrument with a built-in CPU. A note is displayed on a display provided on the panel, or a note is displayed on a display connected to a personal computer via the MIDI interface 32 or the like.
.
[0024]
FIG. 3 is an explanatory diagram of programs and data stored in the RAM 24 in FIG. The storage area 41 of the RAM 24 includes an area for an execution program such as an operating system program and an application program, and a register area for storing various parameters necessary for program execution and data being processed. In addition to the performance data of music A and performance data of music B input from the external storage device 31, the performance data recording unit, that is, the MIDI data transferred from the externally connected electronic keyboard instrument 33 or the like is stored. There are areas to do.
The performance data 42 of the music piece A is composed of, for example, a plurality of MIDI channels, and the performance data is stored for each channel. Each channel has, for example, a plurality of combinations consisting of duration and note data and an initial value.
The duration is data representing the passage of time from the previous event. The note data is data representing a note, and includes, for example, a note number indicating the pitch of the note, a velocity indicating the strength of the sound, and a gate time indicating the length of the note. This duration and gate time are timing data.
Note data may be described as a combination of two event data, note-on and note-off. In this case, each duration of the note-on event and the note-off event becomes timing data.
[0025]
The operation of the embodiment of the present invention will be described below using a flowchart.
FIG. 4 is a flowchart showing the overall operation of the note display control program.
In S41, an application program is started and initial setting is performed. Set SS (start / stop flag) to SS = 0.
In S42, an operation event such as a keyboard or a mouse is detected, and a corresponding process as described later is performed. There is a case of reproducing existing music data and a case of recording keyboard performance, but here, description will be made without distinction.
In S43, it is determined whether or not the operation event detected in S42 is to open the track view window, and the process proceeds to S44 or S45.
In S44, a track view window is displayed. 16 channel tracks in the display period including the current time are displayed, and a bar indicating a block is displayed on each track. At this time, when SS = 1, the display screen is moved as time progresses, and when SS = 0, the display screen is stopped.
In this track view window, when an operation for selecting one block is detected by a mouse operation or the like, a display channel in a piano roll window or a staff window described later is designated.
[0026]
In S45, it is determined whether or not the operation event is to open the piano roll window, and the process proceeds to S46 or S47.
In S46, the piano roll window is displayed. For a preselected channel, a piano roll window is displayed for a predetermined period including the current time in the performance progress. At this time, when SS = 1, the note display area 6 moves as time progresses. When SS = 0, the movement is stopped.
In S47, it is determined whether or not the operation event is to open the staff window, and the process proceeds to S48 or S49.
In S48, a staff window is displayed, and the same processing as in S46 is performed.
In S49, based on the music data, it is determined whether or not it is time to turn on the sound, and the process proceeds to S50 or S51. In S50, if SS = 1, the music data is sequentially transferred to the sound source circuit 28 to generate sound. If SS = 0, stop the transfer.
[0027]
In S51, it is determined whether or not the operation event detected in S42 is a start / stop switch switching operation, and the process proceeds to S52 or S53.
In S52, start / stop switching is performed. If SS = 1, SS = 0. If SS = 0, SS = 1.
In S53, it is determined whether or not the operation event detected in S42 is an instruction to end the application program. If so, the process ends. Otherwise, the process returns to S42.
[0028]
FIG. 5 is an explanatory diagram of a note display start operation.
FIG. 5A is a flowchart for explaining the note display start operation in S44 or S46 in FIG.
The piano roll window of S44 will be described, but the same applies to the staff window of S46. The control of the display period is omitted.
In S61, the pitch display range 8 is set to the initial state. In S62, recording or reproduction of performance data is started. In S63, the pitch data of the first note input at the start of performance is acquired.
In S64, it is determined whether or not the pitch of the first note is within the pitch display range 8. If so, the processing relating to the first note is terminated, and the position of the pitch display range 8 is maintained as it is. Otherwise, the process proceeds to S65.
In S65, a pitch display range 8 centered on the pitch of the first note is calculated. In S66, the note display area 6 in which the pitch display range 8 is corrected is created, and the processing relating to the first note is completed. The operating system program causes the display 3 to display the created note display area 6.
Note that the pitch display range 8 is determined without changing the width (display width) of the note display area 6 and the width (pitch range) of the pitch display range 8 described above.
[0029]
FIGS. 5B and 5C are diagrams showing the note display area 6 for explaining the start operation of the note display.
5B shows the note display area 6 in the initial state, and FIG. 5C shows the note display area 6 after the pitch display range 8 is corrected.
The numerical value on the vertical axis indicates the note number. In order to simplify the explanation, the present time in the performance progress is fixed to the right end of the pitch display range.
The width of the pitch display range 8 is expressed by the number of displayable pitches, which is defined as “scale”. However, when a note number is located at the center of the pitch display range 8 and the “scale” is an even number, the number of pitches that can be displayed is reduced by one from the value of the “scale”. In the examples in FIGS. 5B and 5C, the scale = 8. In FIG. 5B, the central pitch = 72 and the pitch display range is 68.5-75.5.
If the pitch of the first note is 89, for example, it cannot be displayed. Therefore, the pitch 89 is moved in parallel so that it becomes the center of the pitch display range 8, so that FIG. As shown, the pitch display range is 85.5-92.5.
[0030]
FIG. 6 is an explanatory diagram illustrating a first example of processing after the second note following the start of note display. At least one note is displayed.
6 (a) is a flowchart, FIG. 6 (b) is a case where the note display area 6 is not corrected when a note is input at the time of performance progress, and FIG. 6 (c) is a note display when the note is corrected. FIG. 6 is an explanatory diagram showing a region 6.
In S71 of FIG. 6A, the pitch data of the note input at the present time during the progress of the performance is acquired, for example, at the end of the pronunciation of the input note. When the pitch is used for the calculation of the representative pitch in S73 to be described later, the pitch data is also acquired.
In S72, it is determined whether or not the pitch of the input note is within the pitch display range 8. If so, the processing related to the input note is terminated, and the position of the pitch display range 8 is held as it is. Otherwise, the process proceeds to S73.
[0031]
In S73, the “representative pitch” is calculated based on the pitch of the note group within the “predetermined period” including the pitch of the input note described above.
The starting point of the “predetermined period” is the current point in the performance. As will be described later, the “representative pitch” is a statistically central pitch for a group of notes in the past predetermined period.
In S74, a pitch display range 8 centered on the representative pitch is calculated.
In S75, the note display area 6 in which the pitch display range 8 is corrected is created, and the processing relating to the new input note is ended. Since the width (display width) of the note display area 6 and the width (pitch range) of the pitch display range 8 are not changed, the pitch display range 8 is translated.
[0032]
FIG. 6B shows the case where the note display area 6 is not corrected when a note is input at the present time during the performance of the performance. FIG. 6C shows the note display area 6 when the note display area 6 is corrected. It is explanatory drawing which shows.
FIG. 6B shows a case where there are notes A, B, C, and D within a predetermined period and note E is input in a state where the pitch display range 8 is 71 to 78.
Express the length of each note in Tick. A quarter note is equivalent to 480 Tick.
The note A is a dotted quarter note having a pitch of 78, but its length within a predetermined period is 240 Tick. Note B is 240 Tick because it is an eighth note with a pitch of 76. Note C is 240 Tick because it is an eighth note with a pitch of 77. Note D is 360 Tick because it is a dotted eighth note with a pitch of 74. Note E is 360 Tick because it is a dotted eighth note with a pitch of 80.
[0033]
There are various methods for determining the representative pitch described above. Here, two examples will be described.
In Method A, an average value obtained by weighting each pitch of a note group within a predetermined period by the length (gate time) of each note is used as a representative pitch. The calculation process is as follows.

Therefore, as shown in FIG. 6C, the displayable range is 73.5 to 80.5.
[0034]
In this method A, the pitches are weighted based on the lengths of the notes in a predetermined period, so that more important notes (longer lengths) are preferentially displayed in the music flow. This makes it easier to grasp the flow of the song. However, even if a note is input at the present time while the performance is in progress, it may not be displayed if the note length is short.
In method B, a group of notes within a predetermined period in the past is searched, and an intermediate pitch between the highest pitch and the lowest pitch is set as the representative pitch.
In the example shown, the minimum pitch is 74 and the maximum pitch is 80.
Intermediate pitch = (74 + 80) ÷ 2 = 77.
In this method B, the calculation is very simple. However, even a note input at the present time during the performance of the performance may not be displayed if the pitch is too far from the representative pitch.
[0035]
FIG. 7 is an explanatory diagram of a second example of processing after the second note.
7 (a) is a flowchart, FIG. 7 (b) is a case where the note display area 6 is not corrected when a note is input at the time of performance progress, and FIG. 7 (c) is a correction of the note display area 6. It is explanatory drawing which shows the note display area | region 6 at the time of doing.
In S81, the pitch data of the note input at the present time during the performance progress is acquired, for example, at the end of the pronunciation of the input note.
In S82, it is determined whether or not the pitch of the new input note is within the pitch display range 8. If so, the process relating to the new input note is terminated, and if not, the process proceeds to S83.
In S83, the pitch of the new input note is set to the highest pitch or the lowest pitch so that the new input note is always displayed based on the pitch of the note group in the past predetermined period including the input note. The pitch display range 8 is calculated.
That is, when the pitch of a new note during performance exceeds the pitch display range 8, the position of the pitch display range 8 is moved in parallel so that the new note is displayed as the highest pitch note. When the pitch is less than the high display range, the pitch display range 8 is moved in parallel so that the new note is displayed as the lowest pitch note. The display width of the note display area 6 and the width of the pitch display range 8 are not changed.
In S84, a note display area 6 in which the pitch display range 8 is corrected is created, and the processing relating to the new input note is ended.
[0036]
FIG. 7B shows a case where notes A to H exist within a predetermined period and a note I is newly input in a state where the pitch display range is 72 to 79.
Since the pitch of the newly input note I is 80, the pitch display range 8 is exceeded.
Therefore, as shown in FIG. 7C, the pitch display range 8 is moved in parallel so that the pitch of the note I is displayed as the highest note, for example, the pitch display range is changed. Set to 73-80.
[0037]
FIG. 8 is a flowchart of a third example of the process after the second note.
In S91, the pitch data of the note input at the present time during the performance progress is acquired at the end of the pronunciation of the input note, for example. When the pitch is used for calculation of the representative pitch in S103 described later, this is also acquired.
In S92, it is determined whether or not the pitch of the input note is within the pitch display range 8. If so, the process proceeds to S93; otherwise, the process proceeds to S94.
In S94, the highest pitch and the lowest pitch are searched from the note group in the past predetermined period including the input note.
In S95, a maximum pitch difference that is a difference between the highest pitch and the lowest pitch is calculated.
[0038]
In S96, the width of the pitch display range is changed so that the highest pitch to the lowest pitch can be displayed. However, the display width of the note display area 6 is not changed.
At that time, the center of the pitch display range is based on the note group in the past predetermined period of the performance data including the input note, such as the method A or the method B already described with reference to FIG. Control to be representative pitch. In the case of the method A, each pitch of the note group within a predetermined period is an average value weighted by the length of each note. In the case of method B, an intermediate value between the highest pitch and the lowest pitch in the note group within a predetermined period is used.
In S97, the note display area 6 in which the pitch display range is corrected is created, and the processing relating to the new input note is ended. The operating system program causes the display 3 to display the created note display area 6.
[0039]
On the other hand, in S93 and S98 which are advanced when the pitch of the input note is within the pitch display range 8 in S92, the same processing as S94 and S95 is performed.
In S99, the ratio of [width of pitch display range] to [maximum pitch difference] is calculated compared to the maximum pitch difference.
In S100, it is determined whether or not this ratio is a predetermined value, for example, twice or more. If it is twice or more, the process proceeds to S101. If not, the process for this new input note is terminated and the pitch display range is held.
Here, being 2 times or more means that the note group is distributed only in half of the width of the pitch display range 8. In view of this, the range of pitches to be displayed is enlarged to make it easier to see the notes.
[0040]
In S101, the width of the pitch display range 8 is reduced by a predetermined value, for example, 25%. However, the width of the pitch display range is reduced within the limit that allows the note group to fall within the pitch display range. The display width of the note display area 6 is not changed.
In S102, the representative pitch described with reference to FIG. 6 is calculated based on the pitch within a predetermined period in the past including the pitch of the newly input note.
In S103, a pitch display range 8 centered on the representative pitch is calculated.
In S104, a display screen in which the pitch display range 8 is corrected is created, and the processing relating to the new input note is terminated. The operating system program causes the display 3 to display the created note display area 6.
In S95, S96, or S98 to S102 described above, the pitch is controlled so that the representative pitch becomes the center of the pitch display range 8 after the pitch range is set first. Instead, the representative pitch is calculated first, and the representative pitch is set to the center of the pitch display range 8 so that the lowest pitch from the highest pitch in the past predetermined period including the new input note is included. The width of the pitch display range may be controlled so that up to high is displayed.
[0041]
  FIG. 9 is an explanatory diagram of a third example of the note display operation after the second note following the note display start operation shown in FIG.
  FIG. 9A shows the note display area 6 when the note display area 6 is not corrected when a note at the present time in the performance progress is input, and FIG. 9B shows the note display area 6 when the note is corrected.
  FIG. 9C shows another example of the note display area 6 in the case where the note display area 6 is not corrected when the current note in the performance progress is input, and FIG. Show.
  In the example of FIG. 9A, in a state where the pitch display range is 72 to 79 (scale 8), there are notes A, B, and C within a predetermined period, and a new note.DIt shows the case where is input.
  Note A has a pitch of 79, Note B has a pitch of 76, and Note C has a pitch of 72. New input noteDSince the pitch of is 81, the pitch display range 8 is exceeded.
  Therefore, in S97 of FIG. 8, the note display area 6 of the corrected pitch display range 72 to 81 is created in which the pitch of the note D is the highest pitch and the pitch of the note C is the lowest pitch. The width of the pitch display range 8 is expanded to a scale of 10.
[0042]
  On the other hand, in the example of FIG. 9C, in a state where the pitch display range is 73 to 80 (scale 8), there are notes B, C, and D within a predetermined period, and a note E is newly input. Shows the case.
  Note B has a pitch of 76, Note C has a pitch of 74, and Note D has a pitch of 76. Since the pitch of the new input note E is 74, the process proceeds from S92 to S93, and in S98.maximumPitch difference = 2 is calculated. Since the scale of the pitch display range 8 is 8, the ratio = 4 is calculated in S99. Therefore, in S101, the pitch display range 8 is set to scale = 6.
  The representative pitch is 75 for both method A and method B. Therefore, the pitch display range is 72.5 to 77.5.
  As a general rule, the width of the pitch display range 8 is enlarged in S96 described above, reduced in S101, and is repeatedly enlarged and reduced as the performance progresses. However, due to the relationship between the threshold value of the ratio in S100 and the reduction ratio in S101, there are cases where the reduction is performed in S96.
[0043]
In the explanation of the operation with reference to FIG. 5 to FIG. 9, when the end of the input note (note-off) is input at the present time in the progress of the performance, the pitch or the pitch and the length are obtained and calculated. The pitch display range 8 was controlled. On the other hand, when using a representative pitch that does not consider the pitch as in method B, the pitch display range 8 can be determined at the start (note-on) of a new input note.
In the above description, it is assumed that the display width (vertical direction) of the pitch display area 6 is preset to a predetermined value and is not changed. However, the invisible notes may be made visible by changing the display width.
That is, when the pitch of the notes input during the performance is not within the pitch display range of the note display area, the notes of the notes included within the predetermined period of the performance data including the notes input during the performance are displayed. The display width in the pitch direction of the note display area is changed so that the note group falls within the pitch display range according to the height. When the pitch of a note input during performance is within the pitch display range, and the width of the pitch display range is equal to or greater than the maximum pitch difference in the note group, Depending on the pitch, the display width in the pitch direction of the note display area may be reduced within a limit in which a note group can fall within the pitch display range.
The present invention is not limited to the above-described piano roll window and staff window, and a note in an arbitrary note display area that displays information corresponding to time on one coordinate axis and information corresponding to pitch on the other coordinate axis. Applicable to display control. For example, the musical notes may be displayed in different designs and colors depending on the name of the note or the name of the floor.
In the above description, the case where it is realized by a personal computer or an electronic musical instrument has been described. However, the present invention can be similarly applied to a case where a musical note is displayed on a display device provided in a karaoke device, a game device, a mobile phone terminal, or the like.
[0044]
【The invention's effect】
As will be apparent from the above description, the present invention determines the pitch display range in consideration of the pitch of the input notes, and therefore the input notes and the notes within a predetermined period including the input notes. Can be made visible as much as possible or always visible.
[Brief description of the drawings]
FIG. 1 is a block diagram and an explanatory diagram of a note display area according to an embodiment of the present invention.
FIG. 2 is a block diagram showing an example of a hardware configuration for realizing an embodiment of the present invention.
FIG. 3 is an explanatory diagram of programs and data stored in a RAM in FIG. 2;
FIG. 4 is a flowchart showing the overall operation of the note display control device.
FIG. 5 is an explanatory diagram of a note display start operation.
FIG. 6 is an explanatory diagram of a first example of processing after the second note.
FIG. 7 is an explanatory diagram of a second example of processing after the second note.
FIG. 8 is a flowchart of a third example of processing after the second note.
FIG. 9 is an explanatory diagram for explaining a third example shown in FIG. 8;
FIG. 10 is an explanatory diagram showing a specific example of visual display of a conventional note.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Pitch display range determination part, 2 ... Note display position control part, 3 ... Display, 4 ... Virtual screen, 5 ... Note, 6 ... Note display area, 7 ... Display period, 8 ... Pitch display range

Claims (8)

Within the note display area of the display unit, the notes included in the input performance data are converted into pitches and notes based on the pitch and timing of the notes and the pitch displayed in the note display area . Note display position control means for displaying at a position according to the timing;
Depending on the pitch of the note, as the note without changing the note display area itself enters the note display area, Ruotodaka to increase or decrease the pitch difference to be displayed on the notes display area Having a difference determining means,
A note display control device characterized by the above. The pitch difference determining means includes
When the pitch of the note input at the start of performance is not in the note display area in the initial setting state, the note is displayed in the note without changing the note display area itself according to the pitch of the note. Increase or decrease the pitch difference displayed in the note display area so that it falls within the area ,
When the pitch of the notes input at the time of the performance starting is in notes display area in the initial setting state, holds the pitch difference to be displayed on the notes display area,
The musical note display control apparatus according to claim 1, wherein: In sound marks display area of the display unit, the notes contained in the input performance data, based on the pitch, which is displayed on the note pitches and timing before Kion marks display area, of the notes Note display position control means for displaying at a position corresponding to the pitch and timing;
When the pitch of the note entered during play is not in the notes display territory region, the including the notes entered into play, the pitch of the note group included within a predetermined time period of the performance data According to the pitch difference determining means for increasing or decreasing the pitch difference displayed in the note display area so that the note group falls within the note display area without changing the note display area itself ,
A note display control device comprising: The pitch difference determining means includes
When the pitch of the note entered during play exceeds the note display area, pitch difference which the notes entered in the play is displayed on the notes display area to be displayed as a top note Increase or decrease
Wherein when the pitch of a note entered during play is less than the note display area, a pitch difference of note entered during the playing are displayed on the notes display area to be displayed as a lowest tone Increase or decrease ,
The musical note display control apparatus according to claim 3 , wherein: When the pitch of the note entered during Starring Kanade is not in the notes display area, the comprises the notes entered into the playing pitch of the note group included within a predetermined time period of the performance data A pitch center determining means for calculating a representative pitch according to the pitch and making the representative pitch the center of the pitch displayed in the note display area ;
Note display control apparatus according to claim 3 or 4, characterized in that it has a. The pitch difference determining means includes
The pitch of notes input during the performance is in the note display area , and the pitch difference displayed in the note display area is a predetermined value compared to the maximum pitch difference in the note group. the time is at least in response to the note group pitch, the note group without changing the note display region itself within the limits may enter the note display area, it is displayed on the notes display area Reduce the pitch difference ,
The pitch of the notes input during the performance is in the note display area , and the pitch difference displayed in the note display area is greater than the maximum pitch difference in the note group. When the value is less than the value, the pitch difference displayed in the note display area is retained.
The musical note display control apparatus according to claim 3 , wherein: Within the note display area of the display unit, the notes included in the input performance data are converted into pitches and notes based on the pitch and timing of the notes and the pitch displayed in the note display area . A note display position control step to display at a position according to the timing;
Depending on the pitch of the note, as the note without changing the note display area itself enters the note display area, Ruotodaka to increase or decrease the pitch difference to be displayed on the notes display area The difference determination step
A note display control program to be executed by a computer. In sound marks display area of the display unit, the notes contained in the input performance data, based on the pitch, which is displayed on the note pitches and timing before Kion marks display area, of the notes A note display position control step to display at a position corresponding to the pitch and timing;
When the pitch of the note entered during play is not in the notes display territory region, the including the notes entered into play, the pitch of the note group included within a predetermined time period of the performance data In response, the pitch difference determining step for increasing or decreasing the pitch difference displayed in the note display area so that the note group falls within the note display area without changing the note display area itself ,
A note display control program to be executed by a computer.

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