KR930006613B1 - Musical note display apparatus/method for electro keyboard musical instruments - Google Patents

Abstract

The apparatus and method displays sheet music for an electronic keyboard instrument on a monitor. The apparatus includes a sound length detector (7) for detecting length of interval through which a keyboard is pressed, a sound length compensator (8) for converting the detected sound length to standard sound length, a notation signal generator (9) for gnerating notation signal according to the decided standard sound length, a measure detector (11) for detecting snatches, a measure counter (12) for counting the number of snatch, a mode switch (15) for setting modes, a mode controller (16) for controlling sheet music according to modes selected by a user using the mode switch, a repeat signal generator (13) for generating repeat sign when repeated tune is played, and a display controller (17) for displaying notations on a display.

Description

Score display device and display method for electronic keyboard instrument

1 is a circuit diagram showing the configuration of the score display device of the present invention.

2 is a signal flow diagram showing a score display method of the present invention.

3A and 3B show musical scores represented by the present invention as an example.

* Explanation of symbols for main parts of the drawings

1: Keyboard part 2: Sound generator

3: amplifier 4: speaker

5: rhythm generator 6: tempo clock generator

7: sound length detector 8 sound length corrector

9: note / comma information converter 10: display drive controller

11: node end detector 12; Measure counter

13; Dodol Adder 14: Indicator

15: Mode switch 16: Mode controller

16A: Memory 17: Display Drive Controller

mp: node pulse TCK: tempo clock signal

The present invention, when playing a variety of electronic keyboard instruments, such as a digital piano, automatically displays the score of the music played on an indicator such as a monitor so that the composition and arrangement of the musical keyboard instrument can be easily performed And a display method.

In general, in the case of composing and arranging a predetermined piece of music, the composition or arrangement of contents is separately recorded on the wrong line while playing a musical instrument.

However, in case of such recording work, forgetting or distorting the part frequently occurs, and it is often unsatisfactory, so it is corrected while replaying the music contents recorded on the stave. The disadvantage is that the work is very inconvenient and time consuming.

The present invention has been made to solve the above shortcomings. The present invention provides a keyboard, sound generator, a rhythm generator, a tempo clock generator, etc. in an electronic keyboard musical instrument including a note length detector, a note length corrector, a measure end detector, a measure counter, a note / A comma information converter, a mode controller, a dodol sign adder, and a score data memory are installed, and the program to control them can recognize the sheet music being played at a glance. It is an object of the present invention to provide a score display device and a display method capable of displaying scores, which will be described in detail with reference to the accompanying drawings.

1 is a circuit diagram showing the configuration of the score display device of the present invention, as shown therein, a keyboard unit 1 for generating key information of a pressed key and a predetermined value according to an output signal of the keyboard unit 1; A sound generator 2 for generating a sound signal, a rhythm generator 5 for generating a predetermined rhythm according to the tempo clock signal TCK generated by the tempo clock generator 6, and the sound generator 2 and a rhythm generator An amplifier 3 which amplifies the output signal of (5) and outputs it to the speaker 4, and counts the output signal of the tempo clock generator 6 according to the output signal of the keyboard unit 1 to detect the sound length. A sound length detector 7, a sound length corrector 8 for correcting the detected value of the sound length detector 7 to a standard value, and a correction output signal of the sound length corrector 8 as information of notes and commas. A note / comma information converter 9 for converting and an output signal of the note length corrector 8 A node end detector 11 for detecting a node end and generating a node pulse, a node counter 12 for counting an output signal of the node end detector 11, and an operation mode set according to a user's operation. A mode controller 16 having a mode switch 15, a storage device 16A stored in an operation program, for controlling the operation of musical score display according to the setting mode of the mode switch 15, and the mode controller 16; A dodol symbol adder 13 for generating a dodol symbol under control of the control unit, and the note / comma information converter 9, the node counter 12 and the dodol symbol adder under the control of the mode controller 16 The score data memory 10 for storing and outputting the output signal of 13) and the display driving controller 17 for displaying the score on the display 14 according to the output signal of the score data memory 10.

2 is a signal flow showing the score display method of the present invention, as shown in the first step of generating a corresponding key code keyon signal when a key is pressed, and a tempo clock according to the keyon signal of the first step of the shanghai. The second step of correcting the error and correcting the error by comparing the length of the standard sound, The third step of converting the error value corrected in the second process to the note and the comma information, and the error correction in the second process A fourth process of judging nodes and generating node pulses by sequentially calculating coefficient values; a fifth process of generating node numerical information by accumulating the node pulses of the fourth process; and a key code of the first process; A sixth step of storing the three-step note and comma information and the fifth numerical value information of the fifth step, and a step of adding the dodol symbol while eliminating duplicate nodes by comparing the data stored in the sixth step in units of bars; 7 lessons And, it made up of the eighth step of displaying the data stored in the sixth and seventh process.

According to the score display device and display method of the present invention as described above, when the user presses a key, does the keyboard unit 1 increase the key code KC, which is key information corresponding to the increased key, and a key lower in the key code? Generates a key-on signal (KON) indicating whether or not.

The key code is a binary code signal composed of 7 bits as a 3-bit octave code (O1, O2, O3) and a 4-bit node code (N1, N2, N3, N4) representing 12 scales in 1 octave as shown in the following table. .

TABLE 1

The sound generator 2 generates a musical sound based on the key code KC and the key-on signal KON generated by the keyboard unit 1, and the generated sound signal is transmitted to the rhythm generator 5 through the amplifier 3. Is mixed with a predetermined rhythm, which is transmitted as a sound to the user or listener through the speaker 4.

In addition, the rhythm generator 5 is used for automatic rhythm performance, and outputs a variety of rhythm patterns corresponding to the rhythm selected by the rhythm selection switch in accordance with the tampo clock generator TCK generated by the tampo clock generator 6. .

On the other hand, the key-on signal KON generated by the keyboard unit 1 is applied to the sound length detector 7. Another input of the note length detector 7 is applied to the tampo clock TK generated by the tampo clock generator 6, and the note length detector 7 counts the tampo clock TK from the key-on time to the length of the note. Generates data and counts the tempo clock (TCK) at keyoff to generate length data for the comma.

This note data is added to the note length corrector 8, where the coefficient value (including the error) corresponding to the note length is adjusted and output to the standard note length.

For example, if the standard note coefficient value of the quarter note () is 32, the actual coefficient value 30 or 34 degrees including the error is modified to 32 to output 32, the length data value corresponding to the quarter note.

The note length data generated by the note length corrector 8 is added to the note / comma information converter 9, where note and comma information representing a predetermined note / comma corresponding to the note data (e.g. And a key code KC outputted in correspondence with the key pressed on the keyboard 1 and added to the sheet music data memory 10.

The measure end detector 11 sequentially accumulates the input sound length data and outputs a measure pulse mp to the measure counter 12 when the pre-selected measure value is reached.

For example, if one note length value is 32, a quarter pulse will generate a pulse when the total value of the note value reaches 128 (4 × 32). Will be.

The measure counter 12 calculates the input measure pulse mp and applies numerical information corresponding to the calculated value to the score data memory 10.

The score data memory 10 sequentially stores the previous note / comma information and the key code KC, and also stores numerical information corresponding to the measure number.

It is assumed that the memory capacity of this score data memory 10 is usually fast, so that it is possible to store all information about a song of about 20 minutes (about 1 M bit or more).

The music score data memory 10, the dome adder 13, and the indicator 14 are appropriately selected and controlled by the operation of the mode switch 15.

That is, when a mode such as a display code or an edit mode is selected by the mode switch 15, a signal corresponding to the selected mode is applied to the mode controller 16. The mode controller 16 applies appropriate control signals to the musical score data memory 10, the dome adder 13, and the display drive controller 17 based on the signals input from the mode switch 15, respectively.

In the case where the display mode is selected by the mode switch 15, the mode controller 16 applies a control signal to the musical score data memory 10 and the display drive controller 17. FIG.

The score data memory 10 stores note / comma information, key code KC, and measure signal mp corresponding to the keyboard performance, and selectively outputs each input information.

The display drive controller 17 displays the score on the indicator 14 based on the information output from the score data memory 10 so that the note is displayed on the stair, and shifts each note to the left with the display of the new note. Represents a piece of music.

Next, the case where the edit mode is selected in the mode switch 15 will be described. First, the mode controller 16 applies the control signal to the dodol symbol adder 13.

The dowel symbol adder 13 is a place for editing information about one piece of music stored in the music data memory 10, and deletes duplicated information in units of measures, and simultaneously adds the dodol symbol as appropriate.

For example, when the information stored in the sheet music data memory 10 is the same as that shown in FIG. 3A, the dodol adder 13 stores the last section information D stored in the sheet music data memory 10 in units of measure. Read this information and compare the information (D) sequentially by measure in the direction of the song.

When duplicated information is detected in this way, the whole node information C of the information D is compared with the node information immediately before the node where the same information is detected.

Therefore, it is detected that the last two nodes of FIG. 3A are the same as the previous two nodes. In this case, the node information C and D corresponding to the same node are erased, and at the same time, a dodol table is added in front of the node information C and at the end of the node information D, as shown in FIG. 3B.

In this case, when processing information in units of measure, the measure value information corresponding to the measure number is used. The information re-edited in this way is newly displayed in accordance with the operation of the mode switch 15. In addition, in the previous embodiment, a simple repetition symbol such as the dodol table (,) is used, but depending on the state of overlapping nodes, various dodol symbols (D, S,,, coda, etc.) may be added along with eliminating duplicate nodes. .

On the other hand, in the score display method of the present invention, when the user presses a key as shown in FIG. 2, a key code KC and a key-on signal KON are generated by decoding the press of a key corresponding to the pressed key. The tempo clock (TCK) is counted according to the generated key-on signal (KON), and the error is corrected by comparing the counted value with the length of the standard sound, that is, if the count value and the standard sound length are not equal, there is an error. The error is corrected by changing the coefficient value to the length of the standard sound, and the corrected coefficient value is converted into information of notes and rests.

In addition, when the two values are the same as compared to the node value while calculating the coefficient value corrected for error sequentially, the node pulse (mp) is generated, and the generation generates the node pulse number information.

All data for one song, i.e., keycode (KC), information of notes and rests, and numerical value information are stored, and the last uncompared measure is compared by measure in the first direction of the song. If the comparison node and the first node are not the same and the last node and the comparison node are the same, they are erased as duplicates, the dodol symbols are added, and the data of the stored song is displayed on the display unit 14.

As described above, according to the score display device and display method of the present invention, not only the electronic keyboard musical instrument can be easily composed or edited, but also the music being played at the time of performance can be easily distinguished from the original score. There is an effect that becomes possible.

Claims (2)

The tempo at which the keyboard portion 1 for generating key information of the pressed key, the sound generator 2 for generating a predetermined sound signal according to the output signal of the keyboard portion 1, and the tempo clock generator 6 are generated. Rhythm generator 5 for generating a predetermined rhythm according to the clock signal (TCK), and an amplifier (3) for amplifying the output signals of the sound generator (2) and the rhythm generator (5) and outputs to the speaker (4) In the equipped electronic keyboard musical instrument, a sound length detector (7) for counting an output signal of the tempo clock generator (6) in accordance with an output signal of the keyboard unit (1) and detecting a sound length, and the sound length detector ( A note length corrector 8 for correcting the detected value of 7) to a standard value, a note / comma information converter 9 for converting the corrected output signal of the note length corrector 8 into information of notes and rests, and the note A node that generates a node pulse by detecting the end of node by the output signal of the length corrector 8 A de-shut detector 11, a node counter 12 for counting the output signal of the measure-end detector 11, a mode switch 15 for setting an operation mode according to a user's operation, and storage stored in an operation program. A mode controller 16 having an apparatus 16A and controlling the operation of musical score display according to the setting mode of the mode switch 15, and a dodol symbol unit for generating a dodol symbol under the control of the mode controller 16; Music data memory for storing and outputting the output signals of the note 13, the note / comma information converter 9, the measure counter 12, and the dome adder 13 under the control of the go 13 and the mode controller 16; And a display drive controller (17) for displaying the score on the display (14) in accordance with the output signal of the score data memory (10). A first process of generating a corresponding keycode key-on signal when the key is pressed; a second process of counting a tempo clock according to the key-on signal of the first process and correcting an error by comparing with a standard sound length; A third step of converting the error value corrected in step 2 into note and comma information, a fourth step of determining a node and generating a node pulse by sequentially calculating the error value corrected in the second step; A fifth process of generating node numerical information by accumulating the node pulses of the fourth process, and a sixth process of storing the numeric code information of the fifth process and the keycode of the first process, the note and comma information of the third process, And a seventh step of comparing the data stored in the sixth step by measure and adding a dodol symbol while erasing the duplicate node and the eighth step of displaying the data stored in the sixth and seventh steps. Characterized by Musical score display method for electronic keyboard musical instrument to be.

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