JPH034916B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a musical score display device for displaying musical scores of musical pieces played on a keyboard, and more particularly to a musical score display device capable of displaying notes with pitches outside the display area. When displaying musical notes played on the keyboard on a staff notation, notes that correspond to very high or very low notes cannot be displayed without increasing the number of ledger lines, and even if they can be displayed, it is difficult to read them. The problem is that it is difficult. This invention was made in view of the above circumstances.
It is an object of the present invention to provide a musical score display device capable of displaying a musical score with a wide range in a predetermined display area without increasing the number of ledger lines. According to this invention, when displaying a note corresponding to a pitch that is out of the preset range, it is displayed one octave higher or lower on the staff, and the note is played eight degrees higher or eight degrees lower than the above or below. By displaying a sign outside the display range, the ledger line can be omitted, and musical scores with a wide range can be displayed in a predetermined display area. The present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a block diagram showing an embodiment of an electronic musical instrument having a musical score display device according to the present invention.
This system generates musical tones based on key presses, and automatically displays the musical tones on a liquid crystal display and in print. Keyboard 1 has key information (key code) KC indicating the pressed key corresponding to the key pressed on keyboard 1 and the corresponding key code.
A key-on signal KON indicating whether the key corresponding to KC is pressed is generated. The key code KC is information indicating the pitch, for example, as shown in Table 1, the 2-bit octave codes B ₂ and B ₁ represent the octave range, and the 4-bit note code N represents the 12 note names within one octave. This is a 6-bit binary coded signal consisting of ₄ , _N3 , _N2 , and _N1 .

[Table] The musical tone forming circuit 2 forms a musical tone signal based on the key code KC and the key-on signal KON generated from the keyboard 1, and applies this signal to the speaker 4 via the amplifier 3. As a result, the speaker 4 produces a sound corresponding to the key pressed on the keyboard 1. The autorhythm circuit 5 is used for automatic rhythm performance, and a tempo oscillator 6 generates rhythm sound signals representing various rhythm instrument sounds in response to a rhythm selected by a rhythm selection switch (not shown). Occurs depending on the tempo clock TCL. This rhythm sound signal is also amplified by the amplifier 3 in the same manner as described above, and is emitted by the speaker 4 as a rhythm sound. On the other hand, the key-on signal generated from keyboard 1
KON is applied to the note length detection circuit 7. The note length detection circuit 7 has the tempo clock TCL added to the other input from the tempo oscillator 6, and generates note length data by counting the tempo clock TCL added to the key-on time, and counts the tempo clock TCL added to the key-off time. By doing this, the note length data of the rest is generated. In addition,
The note length detection circuit 7 is configured to correct the count value when the count value includes an error, and generate note length data corresponding to the corrected count value. In other words, when the regular count value corresponding to a quarter note is, for example, 32, even if the actual count value does not match the regular count value, such as 30 or 34, the note length data corresponding to the regular count value is It is now being output. The note length data generated from the note length detection circuit 7 is applied to the note rest information conversion circuit 8. The note rest information conversion circuit 8 converts input note length data into note rest information indicating predetermined notes and rests, and outputs this to the display control circuit 9. Further, a key code KC generated from the keyboard 1 is applied to an octave sound detection circuit 10 and an octave conversion circuit 11. Otsutaba sound detection circuit 1
0 outputs a signal H when the pitch indicated by the input key code KC is higher than the preset range, and outputs a signal L when it is lower than the preset range. In this embodiment, the preset pitch range refers to the pitch range from the lower second line to the upper second line of the treble staff. The octave conversion circuit 11 converts the input key code KC to a key code one octave lower when the signal H is applied from the octave sound detection circuit 10, and converts the input key code KC to the input key code when the signal L is applied.
Convert KC to a key code one octave higher,
This is output as a key code KC' to the display control circuit 9 and the leger line information generating circuit 11, and when a key code KC within the preset tone range is input, it is output as is as a key code KC'. The ledger line information generation circuit 12 is the octave conversion circuit 1
Based on the key code KC' added from 1, it is detected whether the note corresponding to the key code KC' requires a ledger line, and the ledger line information U1, U2, L1,
Generate L2. Note that the ledger line information U1 and U2
are the ledger line information corresponding to the upper first line and the upper second line, respectively, and the ledger line information L1 and L2 are the ledger line information corresponding to the lower first line and the lower second line, respectively. Therefore, when the key code KC' input to the ledger line information generating circuit 12 corresponds to a one-point C note (center C note), the ledger line information generating circuit 12 generates the leger line information L1. Further, when the key code KC' corresponds to a three-point C note, the ledger line information generating circuit 12 generates the ledger line information U1 and U2. The display control circuit 9 includes a read-only memory (ROM) that stores in advance dot information indicating a plurality of notes and rests corresponding to the note rest information output from the note rest information conversion circuit 8, and a leger line information generation circuit 1.
A ROM that outputs dot information corresponding to a predetermined ledger line based on the ledger line information output from 2, and a signal H or L output from the overabundance sound detection circuit 10.
Based on
Controls the position of the dot information corresponding to the note on the staff based on the key code KC' output from the octave conversion circuit 11, which includes a ROM, etc.
Data including the dot information is output to the liquid crystal display control circuit 13 and printer control circuit 14. The liquid crystal display control circuit 13 outputs appropriate control signals to display notes, rests, ledger lines, and overturners (8va) on the display section 15a of the liquid crystal display 15 based on the input data, and also outputs appropriate control signals on the display section 15a of the liquid crystal display 15. After the notes, etc. are displayed, a feed control signal is also output to shift each note, etc. one by one to the left. In response to this control signal, the liquid crystal display 15 displays notes, rests, ledger lines, and overtones (8va) on a display section 15a on which staffs are printed in advance. For example, when a key corresponding to a hard A note is pressed down on keyboard 1 for a time period corresponding to a quarter note, the note rest information conversion circuit 8 generates note information corresponding to a quarter note, and converts the note into an octave. The circuit 11 generates a key code KC' corresponding to the hard A sound, and the liquid crystal display 15 displays the lower first line by a control signal corresponding to the above information applied via the display control circuit 9 and the liquid crystal display control circuit 13. , displays the lower second line and displays a quarter note on the lower second line.
Further, when the key corresponding to a hard G note is pressed down on the keyboard 1 for a time period corresponding to a quarter note, the note rest information conversion circuit 8 generates note rest information corresponding to a quarter note, The overtone detection circuit 10 has a symbol L.
The octave conversion circuit 11 converts and outputs the accepted key code KC corresponding to the hard G note into the key code KC' corresponding to the one-point G note one octave higher by the signal L, and displays it on the liquid crystal display. The device 15 displays a quarter note on the second line by a control signal corresponding to the above information applied via the display control circuit 9 and the liquid crystal display control circuit 13, and also displays an overtaba (8va) below the quarter note. do. Similarly to the liquid crystal display control circuit 13, the printer control circuit 14 also controls the printing paper 16a of the printer 16 based on the data output from the display control circuit 9.
Appropriate control signals are outputted to display notes, rests, ledger lines, and overtones (8va), and after the notes, etc. are printed on the print paper 16a, a paper feed control is performed to feed the print paper 16a. It also outputs a signal. In response to this control signal, the printer 16 prints notes, rests, ledger lines, and overtones (8va) on print paper 16a on which staffs are printed in advance. In addition, Otsutava (8va) written below the note.
Of course, 8va means to play the note 8ths lower, and 8va written above the note means to play the note 8ths higher. FIG. 2a is a musical score displayed using many ledger lines, and FIG. 2b is a musical score displayed based on the abbreviation system according to the present invention, which is the musical score shown in FIG. 2a. As is clear from the figure, according to the present invention, many ledger lines can be omitted, thereby narrowing the width of the display section 15a of the liquid crystal display 15 and the width of the printing paper 16a set in the printer 16. At the same time, it is possible to display music scores that are easy to read. Note that when there are consecutive notes outside the displayed range, the first note is marked as otsutaba (8va), and the continuous section is indicated with a dotted line. In this case, the display control circuit 9 may be provided with a storage means for storing the immediately preceding data. Also, notes that can be displayed without using otsutaba (8va) are displayed using otsutaba (8va) if it is easier to read using otsutaba (8va) depending on the context. In this case, all data may be temporarily stored in the display control circuit 9 before displaying the musical score, and after checking the context of each note and editing, the edited data may be output. Furthermore, when a musical note is displayed on its display section 15a, the liquid crystal display 15 shifts each musical note by one, and when a musical note is printed on the printing paper 16a, the printer 16 feeds the printing paper 16a. If the shift amount and paper feed amount are made to correspond to the length of the note, the musical score display is not limited to the note, but may also be a simple black circle indicating the key-on point. As explained above, according to the present invention, many ledger lines can be omitted by using codes outside the display range, and musical scores with a wide range can be displayed even on displays, printers, etc. that have a limited display range. Moreover, it has the advantage that even notes indicating very high or low notes can be easily read.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of an electronic musical instrument having a musical score display device according to the present invention, and FIG.
is a musical score displayed using many ledger lines, and FIG. 2b is a musical score that is the musical score shown in FIG. 2a, displayed based on the abbreviation according to the present invention. 1...keyboard, 2...musical tone forming circuit, 4...speaker,
5... Autorhythm circuit, 6... Tempo oscillator, 7...
Note length detection circuit, 8... Note rest information conversion circuit, 9...
Display control device, 10... Otsutaba sound detection circuit, 1
DESCRIPTION OF SYMBOLS 1...octave conversion circuit, 12...legger line information generation circuit, 13...liquid crystal display control circuit, 14...printer control circuit, 15...liquid crystal display, 15a...display section, 1
6...Printer, 16a...Print paper.

Claims (1)

[Scope of Claims] 1. Sound information generation means for generating pitch information indicating pitch and duration information indicating pitch length in response to key presses on a keyboard; and a pitch information indicating a pitch indicated by the pitch information. a deviation information generating means for generating deviation information indicating whether the pitch has deviated to the pitch side or the bass side when the pitch has deviated from the set pitch range; an octave conversion means for converting and outputting an octave of the pitch information so as to place the pitch information within a preset pitch range; A musical score display device comprising display means for displaying a symbol representing a sound corresponding to note length information on a staff mark, and displaying a symbol outside the display range in correspondence with the symbol based on the deviation information. 2. The musical score display device according to claim 1, wherein the symbol representing the sound corresponding to the pitch information and the note length information is a musical note. 3. The deviation information generating means generates deviation information for all of the plurality of pitch information when at least one of the plurality of pieces of information in a predetermined relationship deviates from the preset pitch range.
Musical score display device as described in Section 1.