JPH0153469B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a key press instruction device for instructing a player which key to press in an electronic musical instrument that electronically generates a predetermined musical tone in response to key operations.

Generally, playing a keyboard instrument requires a high degree of skill, so beginners must memorize the arrangement of the keys and practice enough to be able to intuitively press the keys in time with the rhythm. However, beginners often cannot read music scores well, and even if they can read music, they search for the keys to press one by one while performing, so they may accidentally press the wrong key and operate other keys. Or,
Not being able to press the keys in time with the specified rhythm, etc.
It was not possible to expect a dramatic improvement in practice results.

The present invention has been made based on the above circumstances, and its purpose is to store in advance scale data and tone length data of a series of musical tones constituting a desired piece of music, and based on this scale data, each key is The display body arranged corresponding to the key to be pressed is sequentially displayed to indicate the key to be pressed, and the display is stopped when the scale note is emitted for a time based on the note length data, or further. An object of the present invention is to provide a key press instruction device for an electronic musical instrument that stops outputting the scale sound.

That is, in the first invention, the key to be pressed next is indicated in advance by displaying a corresponding display, and the comparison means determines whether or not the displayed key has been operated by the performer. After the match is detected, the corresponding display is displayed for the corresponding tone length, and then the display of the display is stopped, and from the time when the match is detected, the next key press is The key to be pressed is displayed by driving the corresponding display to make it easier to recognize the duration of the tone, and the key to be pressed next is clearly indicated during the operation of one key, so that the key to be pressed is displayed smoothly. This allows for key operations to be performed.

Furthermore, the second invention further enhances the learning function of the first invention that allows the performer to recognize the duration of a note.
It has the same configuration as the first invention, and furthermore, after a match is detected by the comparison means, the musical tone is output for the duration of the tone, and thereafter, even if the corresponding key is pressed, the corresponding musical tone is forcibly outputted. This device is characterized by a musical tone output control means that stops the output of musical tones, and by forcibly muting the musical tone in addition to displaying the tone length on the display, it is possible to more clearly indicate the tone length. It is designed to make people aware of it.

Hereinafter, the present invention will be specifically described based on embodiments shown in the drawings. FIG. 1 shows the appearance of an electronic keyboard instrument to which the present invention is applied. A keyboard 2 with a plurality of keys, an operation section 3, and a sound emitting section 4 are provided on the body 1 of this electronic musical instrument, and inside the body 1 are LSI components that constitute the electric circuit diagram shown in FIG. , a speaker (not shown), etc. are provided.
In addition, the normal performance is specified on the operation section 3.
NORMAL mode, WRITE mode to specify writing of a series of scale data and tone length data that make up a desired song to memory (described later), and readout of scale data and tone length data written to the RAM mentioned above. A sliding mode changeover switch 5 for switching to a specified READ mode, a timbre designation switch group 6, a rhythm designation switch group 7, a volume switch 8, and the like are provided. Furthermore, in the vicinity of the keyboard 2, a plurality of display bodies 9 corresponding to each key are arranged at positions facing each key. Each of these display bodies 9 is constituted by, for example, a light emitting diode, and when lit, indicates that the opposite key should be operated.

Next, the main circuit configuration of this embodiment will be explained with reference to FIG. Reference numeral 10 in FIG. 2 is an input section, and this input section 10 receives a key operation signal KS when a key is operated.
is given to the key input control section 11. This key input control section 11 performs input control based on the control of the CPU (central processing unit) 12. During normal performance (NORMAL mode) or writing (WRITE mode), the key input control section 11 controls the input of the corresponding scale note by the output of the switch 5. The scale and octave code specifying the above are transferred to the musical tone output port 13, and the musical tone generating section 14 generates a musical tone signal.

Further, during reading (READ mode), this key input unit 11 is supplied with outputs from an X register 15 and a Y register 16, which will be described later.
It is determined whether the key operation signal KS obtained by operating the keyboard 2 matches the contents of the X register 15 and Y register 16, and the result is transferred to the CPU 12 to control the lighting display of the display 9. I'm starting to do it.

Reference numeral 17 in FIG. 2 is an address register (A register) that specifies the address of the tone length memory 18 and pitch memory 19.
A clear command is now being supplied. The tone length memory 18 and tone pitch memory 19, which are addressed by the address register 17, are composed of, for example, RAM (random access memory), and receive read/write signals R/W from the CPU 12.
It is controlled whether data from the CPU 12 is input and stored, or whether the stored contents are transferred to the Z register 20 and Y register 16, respectively.

However, in WRITE mode, the tone length memory is 18.
The pitch memory 19 receives and stores pitch data and scale data of musical tones that are continuously input by operating the keyboard 2 from the CPU 12.

The output of the tone length memory 18 is sent to the Z register 2.
0 is read by the control signal _I1 from the CPU 12,
The contents of this Z register 20 are transferred to the CPU 12 and used for tone duration count control, which will be described later. Further, the output of the pitch memory 19 is read into the Y register 16 by the control signal _I2 from the CPU 12, and its contents are transferred to the key input control section 11, the X register 15 and the tone output port 13, and further
It is also transferred to the LED driver 21.

In other words, the X register 15 is once filled with the Y register 1.
The scale data read into the CPU 12 is written when the control signal _I3 is output from the CPU 12. And the LED
The contents of the X register 15 and the contents of the Y register 16 are supplied to the driver 21, and the CPU 12
The lighting of the display body 9 is selectively controlled based on the control signal _I4 from the control signal I4.

Further, the musical tone output port 13 reads the scale code from the key input control section ₁₁ or the musical scale code from the Y register 16 according to the control signal I5 from the CPU 12, and determines whether or not to transfer it to the musical tone generating section 14. become controlled.

Next, the operation of the above embodiment will be explained with reference to FIGS. 3 to 10. First, the operation for writing a series of scale data and note length data that constitute a desired piece of music will be described. Note that a case in which the music shown in FIG. 3 is written will be specifically described as an example. First, operate an external switch (not shown) to reset the address register 17 and set its contents to "0".
Set it to the initial state. Then, when the mode selector switch 5 is switched to WRITE mode,
Memories 18 and 19 receive signal R1W from CPU 12
Receive writing instructions according to the following. Next, a series of tones constituting a piece of music are sequentially read from the musical score, starting with the first tone, and the key corresponding to that scale is operated by the length of that note. In this case, as shown in Figure 3, the first musical tone is scale B ₄ , so the scale
When the B ₄ key is operated, the scale data representing the scale B ₄ output from the CPU 12 is stored in the pitch memory 19.
is written to the area at address 0. Then the scale
When the key B ₄ is released, the tone length data representing the time length, that is, the length of the half note, is stored at 0 in the tone length memory 18.
written to the address. And address register 1
The content of 7 is updated to "1" by the "+1" signal from the CPU 12. Next, the second musical note is a scale
G ₄ , so when the key of the scale G ₄ is operated with the length of a quarter note, the scale data representing the scale G ₄ is written to the area 1 of the pitch memory 19, and the pitch data is stored in the pitch memory 19. It is written to address 1 of 18. The contents of address register 17 are then updated to "2". Thereafter, if you read the music score in the same way and operate the key corresponding to the scale by the note length, the scale data corresponding to the operated key will be written to the pitch memory 19 and the note length data will be written to the note length memory 18 in order. , the contents of the pitch memory 19 are as shown in FIG. 4, and the contents of the tone length memory 18 are as shown in FIG.

That is, the 12-tone scale C to B corresponds to a 4-bit chord, as shown in Figure 5, and the 1st to 8th octaves correspond to a 3-bit chord, as shown in Figure 6. is associated with.

Furthermore, each tone length is coded as shown in FIG. In addition, since the note length is actually input using the keyboard,
Although this chord differs slightly depending on each scale, FIG. 7 shows a case where it is encoded as shown in FIG. 8.

During the operation of writing musical tone data into such memories 18 and 19, as in normal performance,
A musical tone corresponding to the pressed key is emitted.

When the writing operation to the memories 18 and 19 is completed, the address memory 17 is
is reset and its contents are set to an initial state of "0".

When the mode selector switch 5 is switched to the READ mode, the memories 18 and 19 become readable, and the LED driver 21 becomes operable.

In this READ mode, the system operates according to the flowchart shown in FIG. First, in step _S1 , the contents of the pitch memory 19, which is addressed by the contents of the address register 17, in this case "0011001", are transferred to the Y register 16. The contents are then read into the Y register 16 by the control signal _I2 from the CPU 12. As a result, the information is sent to the LED driver 21, and the control signal _I4 controls the lighting of the display 9 for pitch _B4 (see FIG. 10).

Then, proceed to step _S2 and save tone length memory 1.
8 contents "0001100" to Z register 20 CPU1
It is read by the control signal _I1 from 2.

Then, proceed to step _S3 , and proceed to Y register 1.
It is detected whether or not the same key as the scale data given to the key input control unit 11 from 6, that is, the key _B4 is pressed. That is, the key input control section 11 compares and detects the key operation signal KS from the keyboard 2 and the scale data transferred from the Y register 16.

Then, proceed to step _S4 only when the key of scale B ₄ is operated on the keyboard, but if another key is operated by mistake or no key operation is performed, step S4 will proceed. Retain the state of S ₃ .

Therefore, the performer first selects the key corresponding to the display 9.
You will be prompted to press B ₄ . Therefore,
When the performer presses key B ₄ , the process advances to step S ₄ and the contents of Y register 16 are transferred to musical sound output port 1.
3 by the control signal _I5 from the CPU 12,
The musical tone generator 14 outputs scale note _B4 based on the content.

Following this step _S4 , the process proceeds to step _S5 . In step _S5 , the contents of the Y register 16 are transferred to the X register 15 and input. The contents of the X register 15 are the contents of the LED driver 21.
Therefore, the display on the display 9 corresponding to the key _B4 continues.

Next, proceed to step _S6 , address register 17
The contents of are incremented to "1". Then, in the next step _S7 , the content "0001001" of the pitch memory 19 at the address incremented in the step _S6 , that is, the scale _G4 is stored in the Y register 16. As a result, the LED driver 21 receives the contents from the above-mentioned X register 15, that is, B ₄ and Y
The contents of the register, ie, _G4 , are given, and the two indicators 9 are lit as shown in FIG.

Therefore, the performer can predict the next press by lighting up the display 9 corresponding to the currently pressed key B ₄ and the display 9 corresponding to the key G ₄ to be pressed next. The key will be given to you.

Then, proceed to step _S8 and register Z register 2.
The content of 0 is read into the CPU 12, and the CPU 12 is caused to count down from this content. That is, this step
S ₈ will count the note length. However, in this case, the Z register stores tone length data "0001100" for scale _B4 , and this length,
That is, the length of the half note is counted. and,
In step _S8 , if the value obtained by sequential down-counting is not 0, the process proceeds to step _S9 , and the key input control unit 11 checks whether the key of scale _B4 corresponding to the contents of the X register 15 has been turned off. Detected at If the currently pressed key _B4 is not turned off, the process returns to step _S8 .

Therefore, in this case, even after the length of the half note is counted in steps S ₈ and S ₉ , the length of the half note is
If _B4 is turned on, the process proceeds to step _S10 , where the CPU 12 sends the control signal _I5 to the musical tone output port 13 and the control signal _I4 to the LED driver 21.
The output of the currently sounded scale note B ₄ is stopped, and the display 9 of the scale B ₄ specified by the scale data given from the X register 15 is turned off.

Then, by executing step _S10 , even if the performer is operating the key of scale _B4 , the display 9 will go out and the musical tone notification will stop, so it will not be lit next time. The user is instructed to press the key _G4 indicated on the display 9.

Then, the process proceeds to step _S11 , where it is determined whether all data has been read out from the pitch memory 19. That is, the key input control unit 11 determines whether the data given from the Y register 16 is an end code, and sends a result signal to the CPU 12 for determination.

However, in this case, the Y register 16 contains
Since the contents of _G4 have been set, the program proceeds to _{step S2 following} step S11. Then, in step _S2 , the content "0011000" of the note length memory 18, that is, the quarter note data, is transferred to the Z register 2.
Set to 0 and proceed to step _S3 .

In this step _S3 , the key input control section 11 determines whether or not the key of the contents of the Y register 16, ie, the key _G4 , has been operated. Therefore, until this key G ₄ is operated, there is only one display 9, that is, G ₄
Only those corresponding to the above are lit as shown in FIG.

When this key _G4 is pressed, the process proceeds to step _S4 , where the musical tone corresponding to this key begins to be played, and the process proceeds to step _S5 in the same manner.
-S ₁₁ and S ₂ -S ₄ are repeated, and the musical tone is emitted for the time stored in the tone length memory 18.

Note that if the key is released while the length of the note is being counted in step _S9 , the process immediately moves to step _S10 and the output of that musical tone is stopped. This is to avoid unnaturalness in performance by not causing the musical tone to continue to be produced for a pre-stored length of time even after the key is released. Of course, it is also possible to always make the musical tone sound for a preset time even after the key is released, and it is easy to see that this can be done by eliminating step _S9 .

In this way, in this embodiment, the indicator 9 corresponding to the key to be pressed is driven to light up, and the performer is guided to press the key corresponding to the illuminated indicator 9. Further, the display body 9 is
The display 9 is turned on for a preset time corresponding to the length of a note, then turned off, and at the same time, the output of musical tones is forcibly stopped. instructions will be given to the performer by the Also, while a certain key is being pressed, the display 9 corresponding to that key is lit (however, it is lit only for the duration of the note length of the key), and the display 9 corresponding to the next key to be pressed is lit. By lighting up the keys at the same time, the player is instructed as to which key to play next.

In the above embodiment, the key depression instruction is given by a lighted display, but the method is not a problem as long as it can be distinguished by a blinking display or the like.
Further, in this case, for example, the display for the key being pressed may be lit, and the display for the key to be played next may be displayed blinking.

Further, when writing scale data and note length data, a display body corresponding to the operation key may be lit up, or the display body may be attached inside the key.

Furthermore, in the above embodiment, the scale data and note length data are written by keyboard operation, but in particular, in order to input note length data accurately, note length switches (for example, □〓, □ In addition to inputting by providing push button switches such as ♪, □〓, etc., it is also preferable to input externally by using a magnetic card, magnetic tape, or barcode reader. In this way, it becomes possible to practice playing with a very accurate rhythm.

In addition, in the above embodiment, while a key is being pressed, both the display corresponding to the currently pressed key and the display corresponding to the next key to be played are illuminated. , it is not necessarily necessary to light up the indicator of the next key to be played while the key is being pressed.

As described in detail above, the first aspect of the present invention is to store scale data and note length data of a series of musical tones constituting a desired piece of music in advance, and to store keys to be pressed when playing this piece of music. is indicated by the distinguishing display on the display body, and while the key is being pressed, the above-mentioned distinguishing display is performed for a time corresponding to the note length data of the musical note concerned, and after that, the above-mentioned distinguishing display is stopped.
Even beginners can be told the scale and note length of the musical tones to be played sequentially by the distinguishing display on the display, and when the corresponding musical tone is being generated by key operation, the key to be played next will also be indicated by the distinguishing display on the corresponding display. Therefore, not only is it easy to recognize the note duration, but also the fingering can be done smoothly because the key to be played next is understood.
In addition to the first invention, the present invention also stops the output of the musical tones after the corresponding tone duration has elapsed, allowing the user to clearly understand the rhythm of the music and dramatically improving practice results. I will do it.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is an external perspective view of an electronic keyboard instrument to which the present invention is applied, FIG. 2 is a circuit diagram thereof, FIG. 3 is a diagram showing an example of a musical score, and FIG. Figure 4 shows the contents of the pitch memory, Figure 5 shows the correspondence between scales and chords, Figure 6 shows the correspondence between octaves and chords, and Figure 7 shows the correspondence between scales and chords. Figure 8 shows the correspondence between notes and chords; Figure 9 is a flowchart to explain the operation of READ mode; Figure 10 shows keyboard operations. FIG. 3 is a diagram showing a state in which a key press instruction progresses. 2...keyboard, 5...mode changeover switch, 9...
... Display body, 10 ... Input section, 11 ... Key input control section, 12 ... CPU, 13 ... Musical sound output port,
14...Musical tone generator, 18...Tone length memory, 19
...Pitch memory, 21...LED driver.

Claims (1)

[Claims] 1. An electronic musical instrument that electronically generates predetermined musical tones in response to key operations, comprising: a plurality of indicators corresponding to the keys; and scale data and sounds for each musical tone constituting a desired piece of music. a storage means for storing length data in advance; a designation means for designating updates of each scale data and each note length data stored in the storage means in accordance with a predetermined order in response to a key operation; and designation by the designation means. a readout control means for reading out the scale data and note length data read out; and a match comparison between the scale data read out by the readout control means and indicating the key to be pressed next and the scale specified by the new key operation. a comparison means for displaying a key indicator corresponding to the scale data indicating the next key to be pressed read out by the readout control means to distinguish it from other indicators; After a match is detected, the discrimination display is continued for a time corresponding to the corresponding note length data read out by the readout control means, and then the discrimination display is stopped and the next key to be pressed is displayed. A key press instruction device for an electronic musical instrument, comprising: a display control means for displaying a display corresponding to scale data indicating a key to distinguish it from other display after a match is detected by the comparison means; . 2. In an electronic musical instrument that electronically generates predetermined musical tones in response to key operations, a plurality of indicators corresponding to the keys and scale data and tone length data of each musical tone constituting a desired piece of music are stored in advance. a storage means; a designation means for updating each scale data and each note length data stored in the storage means in accordance with a predetermined order in response to a key operation; and a designation means for updating the scale data and note length data stored in the storage means; a readout control means for reading out the long data; a comparison means for comparing the scale data read out by the readout control means indicating the next key to be pressed with the scale specified by the new key operation; Displaying the key indicator corresponding to the scale data indicating the next key to be pressed read out by the reading control means to distinguish it from other indicators, and after the matching is detected by the comparing means. The discrimination display continues for a time corresponding to the corresponding note length data read out by the readout control means, and then the discrimination display is stopped and the scale data indicating the next key to be pressed is displayed. display control means for displaying a corresponding display object to distinguish it from other display objects after a match is detected by the comparison means; Outputs musical sounds,
A key press instruction device for an electronic musical instrument, comprising: musical tone output control means for forcibly stopping the output of the musical tone even if a corresponding key is subsequently pressed.