JPH083696B2 - Performance instruction device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a performance instruction device for chord training.

[Prior Art and its Problems] Conventionally, an electronic musical instrument having a performance instruction device that blinks an LED (light emitting diode) corresponding to the next key to be pressed and illuminates the LED corresponding to the key to be currently pressed by the duration Being developed. The maximum number of pronunciations of the electronic musical instrument at this time is one note. According to this, the key to be pressed next can be recognized in addition to the key currently to be pressed, and even if the player is unfamiliar with the performance, the performance operation following the current performance operation can be recognized. , You can play with plenty of time.

However, if the conventional display method is applied in order to realize a performance instructing device capable of instructing key depression of chords such as C-Maj and F-Min, a plurality of tones are simultaneously emitted, and the lights are turned on at the same time. Have at least 3 LEDs,
Furthermore, since there are at least 3 LEDs that are blinking at the same time, there are at least 6 LEDs that are displaying,
It is very difficult to see, and it may take a long time to respond to the instructed information, or there may be inconveniences such as pressing the key corresponding to the blinking LED by mistake.

As described above, the conventional display method is unsuitable for a performance instruction device for instructing a plurality of keys such as a chord, and an improvement has been desired.

[Object of the Invention] The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to enable a key press capable of simplifying an instruction of performance operation information regarding a chord or the like to facilitate learning thereof. An object is to provide an electronic musical instrument with an indicating device.

[Key points of the invention] Here, in order to instruct the chord playing smoothly, firstly, the plural keys to be pressed should be clearly recognized, and secondly, the plural keys should be pressed. It is to recognize the right timing. In other words, if the key to be pressed can be recognized in advance and the performer can be notified when it is time to press the key, the key to be pressed currently and the key to be pressed next are displayed simultaneously. It is possible to display the minimum necessary key without doing so.

Focusing on this point, the present invention provides a plurality of performance operators, a plurality of display elements provided corresponding to each of the plurality of performance operators, chord information representing a chord, and duration of the chord. Storage means for storing the represented tone length information, reading means for reading out the chord information and tone length information from the storage means, and when the reading means reads out the chord information, the plurality of display elements based on the chord information. And a counting means for starting counting of the duration corresponding to the sound length information from the time when the sound length information is read by the reading means, and this counting means Display switching means for changing the display form of the display element displayed on the display means from the previous state when the counting of the duration corresponding to the information is finished; Detecting means for detecting whether or not the performance operator corresponding to the display element corresponding to the display element and the performance operator being operated are coincident with each other, and when the coincidence is detected by the detecting means, the reading means is operated. The following chord information and tone length information are read from the storage means, and the plurality of displays based on the newly read chord information by stopping the display operation displayed on the display means. The main point is to provide a control means for controlling to display any one of the elements.

[Structure of Embodiment] An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is an overall rotation diagram of an embodiment in which the performance instruction device according to the present invention is configured as an electronic musical instrument for chord learning.
Is a CPU that controls the entire electronic musical instrument.
Includes a tone length subtraction register 1a, an indicated chord register 1b, and a display register 1c, which will be described in detail later in connection with the operation description.

ROM2 is a chord information storage device that stores chord information for chord training. In this embodiment, 8-bit parallel RO
It is configured as M, and one chord information is 4 bits for chord type (0 to 15: 16 types of chords that can be learned), 4 bits for root note of chord, and 8 bits for note length. , 16 bits in total. More specifically, as shown in the example of FIG. 2, the ROM 2 has the tone length data of 2 beats starting from C-7th and the tone length data of 2 beats following C-Maj. , And F-Maj
After that, chord information is sequentially stored in the structure of tone length data of 2 beats.

The first chord C-7th stored in the ROM 2 is read by the CPU 1 and displayed on the display unit 4 in response to the operation of the start switch 3 for navigating. The display unit 4 is composed of a plurality of LEDs provided corresponding to each key of the keyboard 5 (Fig. 1) as shown in Fig. 3A. A control signal for controlling lighting or blinking of the LED is sent from the CPU 1 to the display unit 4 via the control line 4a.

The operation of the melody key on the keyboard 5 is detected by the CPU 1, and the CPU 1 sends the pitch data corresponding to the operated key to the musical sound creating section 6. The melody sound generated by the musical sound creating unit 6 is emitted by the speaker 8 through the amplifier 7.

On the other hand, the operation of the accompaniment keys on the keyboard 5 is performed by the CPU 1 as before.
Detected, the CPU 1 sends the pitch data corresponding to the operated key to the chord sound creation section 9.

The accompaniment sound generated by the chord sound creating section 9 is emitted by the speaker 8 through the amplifier 7 together with the melody sound from the musical sound creating section 6.

[Operation of Embodiment] Next, the operation of this embodiment will be described.

FIG. 4 shows a processing flow relating to chord learning which is a subject of the present invention. This flow starts when the power is turned on, and the CPU 1 detects presence / absence of a key depression or switch-on in step S1, and if not, NO. In step S4, it is determined whether or not the lesson is in progress.
Return to step S1. This is a state in which the main flow is circulated and the key press or switch on is simply monitored.

If the key is pressed or the switch is turned on, step S1
The result is YES, and the CPU 1 determines in step S2 whether or not the learning start key, that is, the chord navigating start switch 3 is pressed. here,
If the start switch 3 is pressed, step
The determination in S2 is YES, the CPU 1 proceeds to step S5,
Set the address counter to all "0". Since the chord information of ROM2 is stored in order from the address "0", the address data of all "0" from CPU1 corresponds to the first chord information address in ROM2. Next, the CPU 1 executes step S6
, The type of the chord and the root note (C-7th in the example of FIG. 2) at the head of the ROM2 are read out, and the address is incremented (+1) to obtain the chord (note length information for the C-7h (second note). (2 beats in the example in the figure) is read from the ROM 2. The operation up to this point corresponds to the completion of the reading of the first chord information for teaching chords.
In, the display element to be excited, that is, the LED (4), from the type and root note (C-7th) of the chord read in the previous step
And output the information to the display unit 4 and simultaneously output a control signal to the display unit 4 through the control line 4a to instruct the LEDs to be constantly turned on (see FIG. 3A).

Next, the note length information (2 beats) read out in step S6 is stored in the note length subtraction register 1a (step S8), the in-training flag is set (step S9), and the type and root note of the previously read chord are stored. Is stored in the designated chord register 1b (step S10), and the process returns to step S1.

When the keyboard 5 is pressed based on the currently pressed key depression information, the flow proceeds to the switch S11 via steps S1, S2 and S3. Here, since the CPU 1 supplies the pitch data corresponding to the key depression to the chord tone creating section 9, the musical tone produced by the chord tone creating section 9 is emitted by the speaker 8 through the amplifier 7.

Next, it is determined whether or not the training is currently in progress, that is, whether or not the training flag is set (step S12).
Since the teaching flag has already been set in step S9, the process proceeds to step S13, in which the type and root note of the chord pressed and the type and root note of the chord instructed to light stored in the designated chord register 1b. And if they are the same, then YE
In S, the process proceeds to step S14, the address is incremented by 1, and then the next chord information (type, root note, note length, in the example of FIG. 2, C-Maj, 2 beats) is read from ROM2 and the chord is read. The information of the type and the root sound is stored in the display register 1c, the LED (4) to be excited is determined based on the content of the display register 1c, and the blinking display is instructed (step S16). At this time, no control signal is input to the display unit 4 via the control line 4a. Therefore, the LE indicating the key of the chord to be pressed next is selected.
D (4) is placed in a blinking state (see FIG. 3B).

Next, it is judged whether or not it is the tone length subtraction timing based on the time count corresponding to the set tempo (step S1
7) At the subtraction timing, the tone length subtraction register 1a is subtracted (step S18), and it is determined whether the tone length subtraction register 1a is equal to 0 (step S19). The subtraction in step S18 is repeated by repeating steps S19, S1, S2, S3, S4, and S17 until the determination in step S19 becomes YES, that is, when the determination in step S19 becomes YES, that is, Two
Beat sound When a long time has elapsed, proceed to step S7
U1 sends a control signal to the display unit 4 through the control line 4a to keep the blinking LED in a constantly lit state, then passes through steps S8 and S9 to step S10, and the display register 1c is stored. The data about the type and root note of the chord is transferred to the designated chord register 1b and held, and the process returns to step S1 while instructing that it is the timing for key depression.

After that, when a key press is detected in step S1, the process proceeds to steps S2 → S3 → S11 in the same manner as described above,
In step 11, the tone corresponding to the chord of the depressed C-Maj is emitted, and then the process proceeds to steps S12 → S13 → S14 → S15,
In step S15, the next chord type, root note, and note length (F-Maj, 2 beats) are read from ROM2, the chord type and its root note information are stored in the display register 1c, and the note length information is set as note length. Store each in the subtraction register 1a, and step
The LED (4) to be excited is determined in 16 and the blinking operation is instructed.

Next, at each tone length subtraction timing, steps S17 → S18 → S1
9 → S1 → S2 → S3 → S4 → S17 → S18 → S19
When the determination result in S19 is YES, that is, when the content of the indicated chord register 1b becomes 0, the process proceeds to step S7 and the CP
U1 outputs a control signal to the display unit 4 via the control line 4a to switch the LED which has been blinking until now to be constantly lit, and at step S10, stores the data stored in the display register 1c into the instruction chord register 1b. Set and instruct when to press the key.

In this way, the performer can recognize the key to be pressed through the blinking of the LED and can determine the timing to press the key by looking at the change from the blinking of the LED to the constant lighting, so even beginners can follow such instructions accurately. It will be possible.

In the above embodiment, the LE
Although the display state of D is switched from blinking to lighting, conversely, it may be switched from lighting to blinking, the display color is changed, and the point is that the display state may be switched at the key pressing timing.

[Effects of the Invention] As described in detail above, the present invention provides a method for navigating the performance operator correctly during learning using the navigation function, that is, the function of leading and instructing the performance operator to be operated. The display element indicating the performance operator to be operated next is displayed on the display, and the display form is changed to the previous one when it is detected that the duration corresponding to the read sound length information has elapsed from the time when it was displayed. By making it different, it is possible to recognize that the timing to operate has arrived, and when the performance operator corresponding to the displayed chord information is operated correctly, the next chord and note length information is read out and A display is made based on the read chord information. For this reason, it is possible to display with a display element that requires a minimum number of performance operators and timings that should be operated corresponding to the chord to be played, and it is possible to prevent many display elements from illuminating and becoming difficult to see as in the conventional case.
Also, since the performance operator to be operated next can be recognized in advance, even an inexperienced player can perform smoothly.
It has the effect of enabling efficient learning.

[Brief description of drawings]

FIG. 1 is an overall circuit diagram of an embodiment of an electronic musical instrument with a key depression instruction device according to the present invention, FIG. 2 is an example of chord accompaniment patterns stored in the ROM of FIG. 1, and FIG. FIG. 4 is a diagram for explaining the specific configuration of the display section shown in the figure and the flow of the display, and FIG. 4 is a flow chart for explaining the operation of the embodiment of FIG. 1 ... CPU, 1a ... tone length subtraction register, 1b ... instruction chord register, 1c ... display register, 2 ... ROM, 3 ...
Start switch, 4 ... Display, 5 ... Keyboard, 6 ...
Musical sound creation section, 7 ... Amplifier, 8 ... Speaker, 9 ... Chord sound creation section.

Claims (1)

[Claims] 1. A plurality of performance operators, a plurality of display elements provided corresponding to each of the plurality of performance operators, chord information representing chords and tone length information representing duration of the chords. Storage means for storing, reading means for reading out the chord information and tone length information from the storage means, and when the chord information is read out by the reading means, one of the plurality of display elements is displayed based on the chord information. Display means, counting means for starting counting the duration corresponding to the sound length information from the time when the sound length information is read by the reading means, and the counting means corresponds to the sound length information. A display switching means for changing the display form of the display element displayed on the display means from the previous state when the counting of the duration is finished, and the display element on the display. Detecting means for detecting whether or not the corresponding performance operator and the operated performance operator are coincident with each other, and when the coincidence is detected by the detecting means, the reading means is operated to operate the storage means. From the plurality of display elements based on the newly read chord information by stopping the display operation displayed on the display means while reading the next chord information and tone length information from A performance instruction device comprising: a control unit for controlling to display.