JPS59190A - Music score display - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a musical score display device that displays a musical performance performed on, for example, a piano, an Italian organ, etc. as a musical score.

As a conventional musical score display device of this kind, one is known that displays each note to be displayed at equal intervals regardless of the type of note. However, it is well known that in actual musical scores, the display intervals of each note or the intervals correspond to the length of each note.

By the way, if the display interval of each note is determined depending only on the length of each note, the following inconvenience will occur when multiple notes are played simultaneously. In other words, for example, as shown in Figure 1 (a), when a musical score is played on the piano in which the sounding of the 04 sound half note ρ' begins in the middle of the sounding of the C3 sound half note, the performance process When converting to music score, C
Display interval Ls between 3rd note (3rd octave C note) and 04th note
, display interval L between 04 sound and E4 sound! should each correspond to the length of a quarter note. However, if the display interval is determined based on the height of each note, the display interval L31L4 will both correspond to the length of a half note, as shown in Figure 1 (B), and the shape will be different from the actual musical score. It will be displayed.

Therefore, the present invention displays famous notes at display intervals corresponding to the time intervals of changes in musical tone information (hereinafter referred to as events), thereby displaying the musical score in a form that is closer to the actual musical score. The present invention provides a musical score display device that can perform the following functions.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a block diagram showing the configuration of a musical score display device according to the present invention, and the musical score display device shown in this figure displays the process of performance performed on the piano 1 along with the musical score. That is, the piano 1 is provided with a key switch for detecting key operation corresponding to each key (@).
The outputs (musical tone information) of each key switch are each supplied to the musical instrument interface 2.

The musical instrument interface 2 detects the on/off state of each key by scanning the output of each key switch of the piano 1 at a constant frequency M (for example, 4 m5ec). When an event (change) occurs in the on/off state of each key, the event block IB shown in FIG.
is created and supplied to the note selection processing circuit 3. ,here,
As shown in the figure, the event block TB consists of 4 bytes, the first . The second byte is written with timer data indicating the time from the previous event occurrence to the current event occurrence, and the third byte is written with the indicator shown in Figure 3 (b). ,
The fourth byte contains the key code (pitch data) of the key that has changed. In this case, the timer data of the event block TB that is created when a key on the piano 1 is first pressed at the start of the performance becomes "0". In addition, information indicating whether the key is on or off is written in the 7th bit (USB) of the indicator as ``1'' (key on) or ``()'' (key off), and the 1st bit and The Oth bit (LSB) is usually “0”, “0”
'° is entered W. Note that if the event interval exceeds the time represented by the number of bits of the 7J1 timer data, either a similar event block B is created again at that point, or in this case, the first . The 0th bit becomes ``0'' and ``1'', respectively. Further, the 2nd to 6th bits of the indicator are not used at all in subsequent processing.

In addition, if an event occurs for two or more keys at the same time, for example, if one key is turned off and another key is turned on at the same time, a block BBXJi event consisting of the indicator and key code shown in Figure 3 will be generated. There are as many keys as there are generated keys.

FIG. 4 is a score showing an example of a piece of music. For example, at time 1 shown in the figure. At this time, key C3 of piano 1 (key corresponding to note 03) 7/1 was pressed, and at this time! , the key C4 is pressed at a time Ta, Qi which is equal to the length of a quarter note, and from this time t, the above-mentioned time Ta7
At time t, 1i elapsed, key C3 is released and at the same time key E4 is pressed, and from this time t, time T^〃
If key D5 is pressed at the same time as key C4 is released at time t4, the event blocks 1B created at times t and 14 are event blocks TB-1 to TB-B shown in FIG. -4.

Next, the parameter crotch setting ryo 4 is both names (ha 艮CHO).

A minor, etc.), tempo (e.g. quarter note time).

This is for setting each time signature (4/4 time, etc.), and both name data, tempo data, and time signature data corresponding to the set tone, tempo, and time signature are respectively supplied to the note selection processing circuit 3.

The note selection processing circuit 3 detects the on/off state of each key of the piano 1 based on the event block 1B supplied from the musical instrument interface 2, and creates the slot block SB shown in FIG. 6 based on the result of this detection. and outputs it to the symbol assembly processing circuit 5.

This note selection processing circuit 3 will be described in detail below. For example, when the musical score shown in FIG. 4 is played on piano 1, the musical score display device shown in FIG. 2 can display the musical score shown in FIG. 4 as is. The note selection processing circuit 3 is
Data essential for displaying this musical score is created in the form of slot blocks SB for each slot sI+s2 . . . shown in FIG. FIG. 6 shows the basic configuration of this slot block SB, in which the first byte contains slots S3. S,... slot width (S T shown in Figure 4)
JI, BL7, . . . ) are converted into a note length code to be described later and written, and TYPE data, length data, and key code are written in the second to fourth bytes, respectively. In this case, blocks 8BB consisting of the second to fourth bytes are provided corresponding to the notes or rests in each slot SI+82... For example, in the case of slot S shown in FIG. 4, two blocks 8BB are provided. Block 8B corresponds to the note of
B or 2(]N are provided, and in the case of slot S, one block SBB is provided.As for the TYPE data, if the block SBB of slot block SB is 1 sign, then 1-1" is inserted, and in the case of a rest, "2" is inserted. Also, as length data, a note length code corresponding to the length of a note or rest is written. , in this example, a whole note (whole rest), a half note (half rest).

Quarter note (quarter rest)... Corresponding to each quality, note length code LN 1. ,,LN2,LN4...
... has been assigned. Further, as the key code, when the block SBB represents a musical note, the key code of that note is inserted, and when the block SBB represents a rest, "0" is inserted.

Next, the process of creating the slot block date B mentioned above will be specifically explained.

For example, at time 1 shown in FIG. When the event blocks TB- and 1 shown in FIG. 5 are created and supplied to the note selection processing circuit 3, the craft mark selection processing circuit 3 determines that the key C3 is pressed based on the event block TB-1. Detecting this, it injects "1" as TYPE data into area E shown in FIG. 7, and injects the key code of key C3 into area E4. Dimly, time 1. When the event block rB-2 is supplied, the note selection processing circuit 3
First, the timer data Ta is converted into a note length code. In this case, the timer data Th corresponds to the time of a quarter note, and therefore a note length code LN4 is obtained. The note selection processing circuit 3 assigns this note code LN4 to area E in FIG. 7 as the slot width. Next, the note selection processing circuit 3 detects that the key C4 is turned on based on the event block B-2, and selects T! in the area R6.
Insert the key code of key C4 into YPF data "1" and area E. Next, when the event block TB-3 is supplied at time 1s, the note selection processing circuit 3F,
First, the timer data Ta is converted into a note length code LN4, and this note length code L)14 is written into the area E as the slot width. Next, based on event block TB-3, it is detected that key C3 is turned off and key E4 is turned on, and key C3σ) is inserted into area 3 for a time of 27 seconds [corresponding note length code L N 2 is inserted, and the size is set. T to area E1o
YPE Data 11”, area P11.・Enter the key code for key E4. In this way, slot block 5B-1 is completed at time t. At this time, the creation of slot block 5B-3 is started. The note selection processing circuit 3 outputs the completed slot block 5B-1 to the symbol assembly processing circuit 5.

Note that the slot block EIB-5 shown in FIG. 7 is a slot block created by performing nLG on the slot S.

The symbol assembly processing circuit 5 creates display blocks I (B (see β in FIG. 8) for displaying notes, rests, etc.) corresponding to each slot block SB supplied from the note selection processing circuit 3, The display block HB is output to the display processing circuit 6.As shown in FIG. The X coordinate, yW! mark, and UD61 code are written in the second to fourth bytes, respectively. Also, the blocks HBBd, which consists of the second to fourth bytes, correspond to the block EIBH of the slot block SB. In this display block HB,
xP3! ! As i, slots S, , St shown in FIG.
. . . Data indicating the position of the note or rest in the X direction (horizontal direction) is written.

This position in the X direction is usually slot Sl+S! ...
It suffices if the position is a certain distance from the left edge of the note, but if the note has an accidental (such as a sharp) added to it, move it to the right from the normal position.

It's Dou, the X coordinate is slot s,,s,...
- Data indicating the position in the Y direction (vertical direction) (for example, the distance from the bottom line of the staff) is written. This Y
In the case of a musical note, the position in the direction is determined by the key code in the block date BB of the slot block EIB, and in the case of a rest, it is a predetermined fixed position.

Further, the UDS code is a code indicating the type of musical note, rest, temporary, symbol, etc. (these are collectively referred to as musical symbols). That is, all musical symbols are stored in advance in the form of vectors in the memory 7 shown in FIG. For example, a quarter note is represented by the vector vI+"!... shown in Figure 9.
..., and the half note is stored by the coordinates of the start and end points of..., and the half note is represented by the vector vIt + vI! shown in the same figure.・
The coordinates of each starting point and ending point are stored. Further, for each note, as shown in FIG. 10, those where the bar is at the top of the note head and those where the bar is at the bottom are stored. Then, U/D date codes are determined corresponding to each of these musical symbols.

Therefore, if the block SBB of the supplied slot block SB represents a musical note, the symbol assembly processing circuit 5 determines the type of musical note based on the length data,
Furthermore, the desired position of the note is determined based on the key code, and the UDS code corresponding to this determination result is written in the display block HB shown in FIG. Also, slot block S
If block SBB of B represents a rest, the type of rest is determined based on the length data of block SBB, and the UDS code corresponding to this determination result is written in display block 1 (B).

Note that when an accidental symbol is added to a note, a block HBB for displaying the accidental symbol is added to the display block HB. In this case, X, X of the added block HBB
Data regarding the display position of each accidental is written in the coordinates, and the UDS code of the accidental is written in the UD8 code column.

As mentioned above, the display block HB is the slot block SB.
Each block HBB of display block HB is created each time block 8 of slot block SB is supplied.
A block HBB is created corresponding to BB, and if there is an accidental, a block HBB for displaying the accidental is added. The created display block HB is then supplied to the note display processing circuit 6.

The musical note display processing circuit 6 converts the X, X coordinates in the block HBB of the display block HB supplied from the symbol assembly processing circuit 5 to the X, X coordinates (hereinafter referred to as X', Y' coordinates) on the screen of the display device 8. ) and output to the display device 8 along with the UD8 code. That is, when displaying the musical score shown in FIG. 4, for example, first select the X' coordinate (x/
The X' coordinate of the note c3 is calculated from the X coordinate in the display block HB corresponding to P+I=mark (x'-1) and the slot date. Next, the slot width and coordinates (x'-
1), find the X' coordinate of the right end of slot Sl (left end of slot s) (take it as x/-2), and calculate the found coordinate (
X/-2) and slot s, the X/coordinate of note '(NO3) is calculated from the X coordinate in HB of the display block corresponding to slot s. Still, the Y' coordinate of each note etc. is determined from the Y' coordinate of the staff and the X coordinate within each display block.
The note display processing circuit 6 displays x/,
The X/coordinate is output to the display device 8 as a UDS code.

The display device 8 is composed of a CRT (cathode ray tube) display device and a control circuit, and displays the musical staff on the CR7 screen, and reads musical symbols from the memory 7 based on the supplied UDS code. The coordinates representing each vector of this musical symbol are transformed based on the above-mentioned x/, X/ coordinates, and the musical symbol is displayed on the CR7 screen.

In this way, in the embodiment shown in FIG. 2, the slot widths (SL, SL, . . . shown in FIG. 4) correspond to the event intervals Ta, T, . . . shown in FIG. Each note (rest) is displayed at display intervals based on this slot width.

Although the above-described embodiment has a hardware configuration, it is of course possible to replace this configuration with a microcomputer. Although the musical score is displayed, the present invention can also display a musical score based on musical tones 1f4@ recorded on, for example, a kahittegu or a floppy disk.

As explained above, according to the present invention, musical tone information (second
In the embodiment shown in the figure, each note is displayed at a display interval corresponding to the time interval of the event (output of each key switch of the piano 1), so that the musical score can be displayed in a form extremely similar to the actual musical score. I can do it.

[Brief explanation of drawings]

Figures 1 (A) and (2) are diagrams each showing an example of musical score display, Figure 2 is a block diagram showing the configuration of an embodiment of the present invention, and Figures 3 (A1 and (B) are diagrams of the event block TB. A diagram showing the configuration, FIG. 4 is a musical score showing an example of a song, FIG. 5 is a diagram showing a specific example of the event block TB, FIG. 6 is a diagram showing the configuration of the slot block SB, and FIG. 8 is a display block. H
FIG. 9 is a diagram showing each vector constituting a musical symbol, and FIG. 1O is a diagram showing an example of a musical symbol. 2. Musical instrument interface 1, 3...1* Ladle selection processing circuit, 5. Symbol assembly processing circuit, 6. I mark display processing circuit, 7. Memory, 8. Display device. Applicant Nippon Musical Instruments Co., Ltd. Figure 3 (a) Figure 4 Figure 5 Figure 6 Applicant Japanese Painting 1. :, :i mustzor (Bokai?L Figure 9)
Figure 10

Claims (1)

[Claims] A musical score display device that displays the supplied musical tone information as a musical score detects the event of the systematic tone information, and detects the timer data corresponding to the time between the moe event and the current event, and the musical tone that occurred after the event. The first step is to output each pitch data. , a second means for detecting the length of the musical tone based on the timer data, a third means for converting the musical tone detected by the second means into a note having the longer length, and the event and display means for displaying the musical notes obtained by the third means at display intervals corresponding to the time intervals of.