JP2000259151A - Automatic accompaniment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize an automatic accompaniment device which guides a chord playing operation. SOLUTION: A chord to be accompanied is read from an accompaniment pattern storing means 6 in synchronism with a specified tempo and a playing operation that specifies the chord is guided. For example, in a simple chord system, in which a kind of a chord is specified by the number of keys simultaneously pressed and a lowest sound in the pressed keys is specified as a root (a root sound), the chord kind of the chord read from the means 6 is discriminated, light emitting colors are made different for the root and other keys to be pressed based on the discriminated chord kind so that a chord playing is press key guided visually.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic accompaniment device capable of guiding a chord playing operation.

[0002]

2. Description of the Related Art Conventionally, each of the sounds constituting a pre-stored accompaniment pattern (for example, a chord backing pattern representing a middle-range accompaniment or a bass pattern representing an accompaniment of a bass sound in a low-pitched range) is depressed. There is known an automatic accompaniment apparatus that performs semi-automatic accompaniment by converting the pitch in accordance with a chord that is played or automatically accompaniment by automatically reading accompaniment patterns in accordance with a specified tempo. In this type of device, for example,
Each key in this accompaniment key range is assumed to be a chord specification switch so that the chord can be specified so that the bass range is divided into the accompaniment key range from the predetermined key in the keyboard and the beginner can easily specify the chord. The simple chord method that was used, the fingered chord method for specifying chords by actually pressing chord sounds in the accompaniment key range for intermediate and advanced players, or the chord composition sounds using the entire key range A full-range code system for designating a code has been put to practical use.

[0003]

In the above-mentioned conventional automatic accompaniment apparatus, when performing accompaniment practice by using an accompaniment pattern of a factory-preset practice song as an example, the number of simultaneous key presses on the accompaniment keyboard in the simple chord system. In this mode, the chord type is designated simply by setting the lowest note of the key depression as the root (root note), but this is different from the method of depressing the actual chord component sound. There is an adverse effect that it is difficult to understand whether the key may be locked.

On the other hand, in the fingered chord system and the full-range chord system, the chord constituent sound is actually depressed. However, the chord sound and the base sound have different roots and a chord to which a fractional sound or a tension sound is added. When playing a chord with a high degree of difficulty, it is not suitable for accompaniment practice, for example, it is difficult to know which key to press. In short, in other words, in the conventional automatic accompaniment device, it is difficult to know which key to press and it is impossible to guide the chord playing operation. The present invention has been made in view of such circumstances, and has as its object to provide an automatic accompaniment device that can guide a chord playing operation.

[0005]

To achieve the above object, according to the first aspect of the present invention, an accompaniment pattern storage means for storing chords to be accompanied in a song progression order, and the accompaniment pattern synchronized with a designated tempo. It is characterized by comprising reading means for reading a chord to be accompanied from the storage means, and guiding means for guiding a performance operation for designating the chord read by the reading means.

According to a second aspect of the present invention, the guiding means includes a light emitting means arranged for each key and a key for designating a code read by the reading means. A guide control means for controlling a light emission form of a corresponding light emission means is provided, and keying is guided by changing a light emission form of a light emission means provided for a key to be depressed.

According to a third aspect of the present invention, the guidance control means determines the code type of the code read by the reading means by the number of simultaneous key presses, and sets a route of the code. Key guidance according to the simple chord method that specifies the lowest tone of the simultaneous key depression,
It is characterized in that the key corresponding to the root and the key to be depressed have different light emission modes.

[0008] Further, claim 4 is dependent on claim 2 above.
In the invention described in the above, the guide control means, when a base sound or a tension sound is added to the code read by the reading means, a light emission form of a key corresponding to a constituent sound of the code, and a base sound. And the key light emission mode corresponding to the tension sound is distinguished from each other.

In addition, claim 5 is dependent on claim 2.
In the invention described in the above, the guide control means, when a base sound is added to the code read by the reading means, if the root of the code and the base sound are different fraction codes, the base control means , And among the constituent sounds of the chord, the light emitting form of the key corresponding to the root and the light emitting form of each key corresponding to the constituent sounds other than the root of the chord are distinguished from each other. In the case of a fractional chord, the light emission form of the key corresponding to the root and the light emission form of each key corresponding to the constituent sounds other than the root of the chord are distinguished from each other.

Further, according to the present invention, an accompaniment pattern in which chords to be accompanied are stored in the order of music progression, and which key on the keyboard the left and right fingers are to be positioned in correspondence with the accompaniment pattern. Storage means for storing fingering data to be read, reading means for reading the accompaniment pattern and the corresponding fingering data from the storage means in synchronization with the designated tempo, and reading the fingering data read by the reading means. And guiding means for guiding a finger position when playing a chord to be accompanied and guiding a key corresponding to a constituent sound of the chord to be accompanied in accordance with the read accompaniment pattern. I have.

According to the present invention, the chord to be accompanied is read out from the accompaniment pattern storage means in synchronization with the designated tempo, and the performance operation for designating the chord is guided, so that the accompaniment pattern of the practice music is used as an example. In practice, it is possible to solve the problem that it is difficult to determine which key to press.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an automatic accompaniment apparatus according to an embodiment of the present invention will be described as an example with reference to the drawings. A. First Embodiment (1) Configuration FIG. 1 is a block diagram showing a configuration of an automatic accompaniment device according to a first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a keyboard for generating performance information such as a key-on / key-off signal and a key code corresponding to a key press / release operation (performance operation). 2 is CP
A key press guide unit for guiding key press under the control of U3. As shown in FIG. 2, the key press guide section 2 includes a light emitting means 2a formed of a translucent resin material or the like and arranged below each key, and a light emitting means 2a provided for each key. And a driver 2b (not shown) for driving the light emitting means 2a. The light emitting means 2a provided corresponding to the key to be depressed is lighted and driven in accordance with a lighting control signal supplied from the CPU 5 to be described later. Guide key presses. The light emitting means 2a preferably uses a type in which LEDs (light emitting elements) that emit light of "red", "blue" and "yellow" are integrally formed, and emits a color other than these three primary colors by adjusting the emission luminance of each color. Making it possible. Further, the light emitting means 2a is not limited to this, and may be a mode in which LEDs for monochromatic emission are provided for required colors.

Reference numeral 3 denotes a panel switch group. In addition to a power switch for turning on / off the power, a pattern selection switch for selecting an accompaniment pattern of a predetermined music, and a chord designating method for accompaniment performance (the above-described simple chord method, fingered chord, etc.) And a full-range code system). 4 is L
A display unit composed of a CD panel or the like.
The operation mode and various setting states are displayed according to the display control signal supplied from the PU 5. The CPU 5 controls the key press guide unit 2 according to the chord designation method selected by operating the chord method selection switch when performing automatic accompaniment according to the accompaniment pattern of the music specified by the pattern selection switch. Then, the chord playing operation is guided, and the characteristic operation will be described in detail later.

Reference numeral 6 denotes a ROM for storing not only various control programs loaded on the CPU 3 but also accompaniment patterns for a plurality of songs and a guide table TBL (described later). ROM
The guidance table TBL stored in 6 is a data table that stores key designation data that designates a key to be used for key depression guidance using a code type as a read address as shown in FIG. The guide table TBL is used when guiding a chord playing operation. For example, when the code type of the chord data read from the accompaniment pattern is “ma
In the case of "j", key guidance is provided only for the route (root tone) with reference to this guidance table. On the other hand, ROM6
As shown in the example of FIG. 4, the accompaniment pattern stored in the... Code data is stored in units of beats in the order of measures corresponding to the music progression. The code data referred to here is data formed from a route and a code type.

Next, the configuration of the embodiment will be described with reference to FIG. 1 again. In FIG. 1, reference numeral 7 denotes a RAM used as a work area of the CPU 5, in which various register / flag data are temporarily stored. Reference numeral 8 denotes a sound source which is constituted by a well-known waveform memory reading method and has a plurality of sounding channels which operate in a time-division manner. Sound source 8 is C
In accordance with the musical tone parameters supplied from the PU 5, waveform data of a predetermined timbre is read from the waveform memory 8a to generate a musical tone waveform, and also generates a chord tone and a bass tone generated corresponding to the accompaniment pattern. Reference numeral 9 denotes a D / A conversion circuit, which converts the output of the sound source 8 into an analog waveform signal and supplies it to a sound system 10 at the next stage. The sound system 10 performs, for example, filtering such as removing unnecessary noise from the analog waveform signal supplied from the preceding stage, amplifies the signal, and emits the sound from the speaker SP.

(2) Operation Next, the operation of the first embodiment will be described with reference to FIGS. In the following, first, the operation of the main routine will be described as a schematic operation, and then the operation of the accompaniment guidance processing routine according to the gist of the present invention will be described. Operation of Main Routine First, when the power is turned on in the present embodiment, the CPU 5
A predetermined control program is loaded from M6, the main routine shown in FIG. 5 is executed, and the process proceeds to step SA1. In step SA1, various registers and flags set in the RAM 7 are reset, and an initialization process for instructing the sound source 8 to reset the registers to zero is executed.

After the completion of the initialization processing, the CPU 5 proceeds to step SA2 to perform a switch processing in accordance with various switch operations of the panel switch group 2 disposed on the console, for example, in response to an operation of the above-described pattern selection switch. The setting of the accompaniment pattern and the selection of the chord designation system by operating the chord system selection switch are performed. And
At step SA3, a tone corresponding to the key press / release operation is generated /
After performing the keyboard processing to mute the sound, in step SA4, an accompaniment guidance process for guiding the chord playing operation by controlling the key press guide unit 2 is executed. Thereafter, steps SA2 to SA4 are repeated until the power is turned off, and the tone generation and the accompaniment guidance proceed according to the contents of the key press / release operation and the switch operation.

Operation of Accompaniment Guidance Processing Routine Next, the operation of the accompaniment guidance processing routine will be described with reference to FIGS. In this description of the operation, it is assumed that the accompaniment pattern shown in FIG. 4 is selected in step SA2 described above, and that the accompaniment pattern is set in advance so as to accompany the accompaniment using the simple code method described above. Now, when the accompaniment guidance processing routine is executed through the above-described step SA4 under such pre-setting, the CPU 5 advances the process to step SB1 shown in FIG. 6, and is the timing for reproducing the accompaniment pattern first? It is determined whether or not it is not at the reproduction timing, and the determination result is “NO”, and this routine is once completed.

On the other hand, if it is during the playback timing, the result of the determination at step SB1 is "YES", the process proceeds to the next step SB2, and the chord data is read out from the accompaniment pattern shown in FIG. The address pointer is updated so as to correspond to the next beat in preparation for the next reading. Next, in step SB3, the code type is determined from the read code data, and the subsequent step S3
In B4, using the determined code type as a read address, key designation data designating a key to be depressed is read out from the above-described guidance table TBL (see FIG. 3), and a lighting control signal corresponding to the key designation data is depressed. It is supplied to the guide unit 2 to guide the key pressing operation by the simple code method.

A specific example of the key press guidance will be described. For example, if you want to guide the route in red and the code type in green among the keys pressed by the simple code method,
The lighting control of the accompaniment pattern shown in FIG. 4 is performed in the forms shown in FIGS. That is, if the code data is “C
In the case of "maj", the code type is "maj (major)", so that the key to be depressed is only the root when referring to the guidance table TBL. Therefore, FIG.
As shown in the figure, only the root "sound C" is lit in red.

Next, when the code data is "Am", the code type is "min (minor)", so that referring to the guidance table TBL, the key to be depressed is the root and the key immediately above it. As shown in FIG. 2B, the root “A sound” is red, and the “B”
The "sound" is lit green respectively. When the code data is "Dm7", the code type is "m7 (minor seventh)". Therefore, referring to the guidance table TBL, the keys to be pressed are the root and the three keys above it. As shown in (c), the route “D
"Sound" is red and "E sound" and "F sound" to specify the chord type
And "G sound" are lit green. further,
When the code data is “G7”, the code type is “7t
h (seventh) ", referring to the guidance table TBL, the key to be depressed is the root and the two keys above it, and as shown in FIG.
"Sound" is red, and "A sound" and "B
The "sound" is lit green respectively.

As described above, according to the first embodiment, in the simple chord method in which the chord type is designated by the number of simultaneous key presses and the lowest note of the key presses is designated as the root (root note), the root and other keys are used. Since the emission color of the key to be depressed is made different from that of the key to be depressed, it is possible to visually guide key depression of a chord performance according to the accompaniment pattern. Note that the key guidance is not limited to the mode illustrated in FIG. 7, and the light emission luminance may be different between the root and the other key to be pressed, or the light emission timing may be different between the root and the other key to be pressed. Various modifications are possible, such as different flashing speeds. In addition,
As in the example shown in FIG. 8, the emission color of the key to be pressed can be different for each code type.

That is, the mode shown in FIG. 8 is realized by the same processing as that of the first embodiment. When the code data is "Cmaj", the code type is "maj".
j (major) ", only the root" C sound "is lit in" red "assigned to" maj (major) ". If the code data is “Am”, the code type is “min (minor)”, so the root and the key above it are lit in “green” assigned to “min (minor)”. You. Further, if the code data is “Dm7”, the code type is “m7 (minor seventh)”, so the root and the three keys above it are “m7”.
7 (minor seventh) ". If the code data is “G7”, the code type is “7th (seventh)”, so the root and the two keys above it are lit in “blue” assigned to “7th (seventh)”. You.

B. Second Embodiment Next, a second embodiment will be described with reference to FIGS. In the first embodiment described above, the mode in which the chord performance by the simple chord method is guided by the key press based on the accompaniment pattern (see FIG. 4) in which the chord data including the chord type and the root are stored in the music progression order has been described. In the second embodiment, as in the example shown in FIG. 9, a chord performance is guided by a full-range chord system based on an accompaniment pattern including an on-base chord or a tension note. Therefore, the configuration of the second embodiment is the same as that of the first embodiment, so that the description thereof will be omitted, and the operation of the accompaniment guidance processing routine different from that of the first embodiment will be described below.

First, as in the first embodiment described above, it is assumed that the accompaniment pattern shown in FIG. 9 is selected in step SA2 (see FIG. 5), and the accompaniment pattern is set so as to accompany the accompaniment pattern in a full-range code system. . And
Under these settings, when the accompaniment guidance processing routine is executed via the above-described step SA4, the CPU 5 proceeds to FIG.
The process proceeds to step SC1 shown as 0, and it is determined whether or not it is under the timing to reproduce the accompaniment pattern. If it is not under the reproduction timing, the determination result is "NO", and this routine is once completed.

At the playback timing, the result of the determination in step SC1 becomes "YES", the process proceeds to the next step SC2, and the accompaniment pattern shown in FIG. The address pointer is updated to correspond to the next beat.
Next, in step SC3, the read pattern data is separated into base sound, chord data, and tension sound, and stored in the corresponding registers BS, CD, and TN. Next, in step SC4, if the base sound is stored in the register BS, the key press guide unit 2 is instructed to light the key corresponding to the base sound in “red R”. Subsequently, in step SC5, the chord data stored in the register CD is used as a read address, and the chord constituent sounds are read with reference to the guide table, and each key corresponding to the read chord constituent sounds is lit in “green G”. An instruction is given to the key press guide unit 2. And step SC
In step 6, if the tension sound is stored in the register TN, the key press guide unit 2 is instructed to turn on the key corresponding to the tension sound in "blue B" to complete the present routine.

Therefore, for example, when the first beat of the second bar of the accompaniment pattern shown in FIG. 9 is read out, as shown in FIG. , The key corresponding to the chord constituent sound is lit in “green G”, the key corresponding to the tension sound is lit in “blue B”, and “Dm9 / G” is guided to be pressed. When the third beat of the second bar of the accompaniment pattern is read, the key corresponding to the bass sound is “red R” and the keys corresponding to the chord constituent sounds are set as shown in FIG. Are lit in “green G”, the key corresponding to the tension sound is lit in “blue B”, and “Db7 # 11” is guided to be pressed.

As described above, according to the second embodiment, in the full-range chord system in which the playing difficulty is high, the key depression of a difficult chord such as a fraction chord having a different root between a chord sound and a base sound or a chord to which a tension sound is added. The method and the harmony role of each constituent sound can be visually recognized, and the effect of facilitating the accompaniment practice can be obtained. The guidance table read and read in step SC5 is as follows.
This is a data table in which the contents of the table are different from those of the first embodiment described above, and the code constituent sounds corresponding to the code data are read out. In this embodiment, only the key to be pressed is guided. However, in addition to this, for example, the light emission mode (light emission color, blinking state, light emission luminance, or a combination thereof) is made different. If the key to be depressed with the left hand and the key to be depressed with the right hand are guided separately, more accurate accompaniment practice can be realized.

C. Third Embodiment In the above-described second embodiment, the keys corresponding to the bass sound, the chord constituent sound, and the tension sound are lit in different colors to guide the chord having a high difficulty level in the key press. It is not possible to visually distinguish whether the key-depressed code is a fractional code or a non-fractional code. Therefore, in the third embodiment, in the chord performance by the full-range chord method, it is possible to discriminate whether or not the chord is a fractional chord and to enable the key press guidance. Hereinafter, the operation of the accompaniment guidance processing routine according to the third embodiment will be described with reference to FIGS.

As in the above-described second embodiment, in a state where an accompaniment pattern including an on-bass chord or a tension note is selected and the accompaniment pattern is set to accompaniment guidance in a full-range chord system, the above-described step SA4 is performed. When the accompaniment guidance processing routine is executed,
The CPU 5 advances the process to step SD1 shown in FIG.
It is determined whether or not it is under the timing to play the accompaniment pattern.
O ", and this routine is once completed.

When the playback timing arrives, the result of the determination in step SD1 becomes "YES", the process proceeds to the next step SD2, and the accompaniment pattern shown in FIG. The address pointer is updated to correspond to the next beat. Next, in step SD3, it is determined whether or not the read pattern data is an on-base code (fractional code), that is, whether or not the root of the code data is different from the bass sound. Here, if the root of the chord data is different from the base sound, it is an on-base chord, so the judgment result is “YES”, the process proceeds to the next step SD4, and the key corresponding to the base sound is “blue G”. After instructing the key press guide unit 2 to light up, the process proceeds to step SD5.

On the other hand, if the root of the chord data is the same as the bass sound, it is not an on-bass chord, so the result of the determination in step SD3 is "NO", and the process proceeds to step SD5. Then, in step SD5, the chord constituent sound is read out with reference to the guidance table, and in the following step SD6, the key corresponding to the root is instructed to the key press guide section 2 which lights up in "red R". Thereafter, the process proceeds to step SD7, in which each key corresponding to each of the constituent sounds other than the root is instructed to the key press guide unit 2 which lights up in "green G" to complete the present routine.

Therefore, for example, the second of the accompaniment patterns
When the fractional code Dm9 / G at the first beat of the bar is read, as shown in FIG. 13A, the key corresponding to the bass tone is “blue G” and the key corresponding to the root of the chord constituent tone. Each key corresponding to each of the constituent sounds other than the root is illuminated with "green R" and the key is guided by key depression. Db7 # 11 on the third beat of the second bar of the accompaniment pattern
Is read out, the key corresponding to the root of the chord constituent sound is “red R”, and each key corresponding to the constituent sound other than the root is “green G”, as shown in FIG. And the key is guided as a non-fractional code.

As described above, according to the third embodiment, in the chord performance by the full-range chord method, key press guidance is performed by distinguishing whether a chord is a fraction code or not. As a result of visually recognizing the harmony role of each constituent sound, an effect that accompaniment practice becomes easy can be obtained. In this embodiment, the fractional code and the non-fractional code are distinguished by changing the light emission mode, but in addition to the above, the light emission form is also used for the code based on the sound outside the code and the inverted type code. It is also possible to provide key press guidance while displaying the code types in a different manner.
Further, in the above-described first to third embodiments, for simplicity of explanation, a key to be pressed is emitted at each reproduction timing to guide the key press, but the gist of the present invention is not limited to this. However, the present invention is, of course, also effective in a mode in which a key to be depressed is continuously emitted while a key to be depressed next is blinked and guided.

D. Other Examples Further, the gist of the present invention can be used together with the fingering guide shown in FIG. That is, the fingering guide shown in FIG. 14 projects a finger silhouette on the keyboard 1 to guide the finger positions of the left and right hands, and at the same time emits light corresponding to a key to be actually played out of the silhouette projected keys. The key depressing is guided by driving the means 2a. In order to realize such a mode, for example, as shown in FIG. 14 (a), an LCD formed by a light emitting means 2a and a transparent electrode below each key.
The LCD panel 20 has a backlight 30 that illuminates the lower surface of the LCD panel 20.

The LCD panel 20 functions as a shutter that blocks light in the shape of a finger, and forms a finger-shaped image corresponding to fingering data under the control of the CPU 5. The fingering data indicates in synchronization with the accompaniment pattern which key on the keyboard 1 the left and right fingers are to be positioned. According to this data, L is arranged below the corresponding key.
A finger-shaped image is formed on the CD panel 20, and this image blocks the illumination from the backlight 30 to project the silhouette of each finger on the key. As a result, the positions of the left and right fingers on the keyboard 1 are guided. That is.

For example, when such a fingering guide is combined with the third embodiment described above, the positions of the left and right fingers on the keyboard 1 are guided by the silhouette projection as shown in FIG. A chord playing operation is guided by emitting a predetermined color of a key to be actually pressed within the guided finger position. Note that the example shown in this figure displays the finger position and the key press position of Dm9 / G. By simultaneously guiding the finger positions of the left and right hands and the key to be depressed in this way, it is possible to effectively learn a chord performance with high performance difficulty.

[0038]

According to the first aspect of the present invention, the chord to be accompanied is read out from the accompaniment pattern storage means in synchronization with the designated tempo, and the performance operation for designating the chord is guided. When the accompaniment pattern is used as an example to practice accompaniment, it is possible to solve the problem that it is difficult to determine which key should be pressed. According to the second aspect of the present invention, since the key-depressing guidance is performed by changing the light-emitting mode of the light-emitting means provided on the key to be depressed, it is possible to visually guide the chord playing operation. According to the third aspect of the present invention, when key press guidance is performed according to a simple code method in which the code type is specified by the number of simultaneous key presses and the root of the code is specified by the lowest tone of the simultaneous key presses, Since the light emission form of the corresponding key is different from that of the other keys to be depressed, the chord performance can be guided in a manner that is easy to understand, even if the key is not the same as the method of depressing the actual key. According to the invention described in claim 4, when a bass sound or a tension sound is added to the chord, the light emission form of the key corresponding to the constituent sound of the chord, the light emission form of the key corresponding to the base sound, Since the key emission mode corresponding to the tension sound is distinguished from each other, it is possible to visually recognize the key pressing method of the chord with high playing difficulty and the harmony role of each component sound of the chord, resulting in accompaniment. Practice can be performed very easily. According to the invention described in claim 5,
Key guidance is provided to distinguish whether a chord is a fractional chord or not, so that it is possible to visually recognize the key depressing method of chords with high performance difficulty and the harmony role of each constituent sound, making it extremely easy to practice accompaniment. It can be carried out. According to the invention described in claim 6,
In addition to guiding the finger position when playing the chord to be accompanied according to the fingering data and guiding the key corresponding to the constituent sound of the chord, the fingering when playing the chord and the composition of each constituent sound of the chord are performed. A harmony role can be visually recognized, and self-study of accompaniment practice can be facilitated.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a first embodiment according to the present invention.

FIG. 2 is a diagram for explaining a configuration of a key press guide unit 2;

FIG. 3 is a diagram for explaining the contents of a guidance table TBL.

FIG. 4 is a diagram showing an example of an accompaniment pattern in the first embodiment.

FIG. 5 is a flowchart showing an operation of a main routine.

FIG. 6 is a flowchart showing an operation of an accompaniment guidance routine.

FIG. 7 is a diagram for explaining an accompaniment guidance process.

FIG. 8 is a diagram for explaining an accompaniment guidance process.

FIG. 9 is a diagram showing an example of an accompaniment pattern in the second embodiment.

FIG. 10 is a flowchart showing the operation of an accompaniment guidance routine according to the second embodiment.

FIG. 11 is a diagram for explaining an accompaniment guidance process according to the second embodiment.

FIG. 12 is a flowchart showing an operation of an accompaniment guidance routine according to a third embodiment.

FIG. 13 is a diagram for explaining an accompaniment guidance process according to the third embodiment.

FIG. 14 is a diagram for explaining an example in which the fingering guidance mode and the accompaniment guidance are combined.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Keyboard 2 Key press guide part (guidance means) 2a Light emission means 2b Driver 3 Panel switch group 4 Display part 5 CPU (reading means, guidance means) 6 ROM (accompaniment pattern storage means) 7 RAM 8 Sound source 9 D / A conversion circuit 10 Sound System

Claims (6)

[Claims] 1. An accompaniment pattern storage means for storing chords to be accompanied in the order of music progression; a reading means for reading a chord to be accompanied from said accompaniment pattern storage means in synchronization with a specified tempo; An automatic accompaniment device comprising: a guide unit for guiding a performance operation for designating a chord to be played. 2. The light guide device according to claim 1, wherein the light guide device includes: a light emitting device arranged to face each key; and a guide control device for controlling a light emitting mode of the light emitting device corresponding to the key designating the code read by the read device. 2. The automatic accompaniment device according to claim 1, further comprising: changing a light emitting mode of a light emitting means provided on a key to be depressed to guide key depression. 3. A simple code for designating a code type of a code read by the reading means by the number of simultaneous key presses and a root of the code by a lowest tone of the simultaneous key presses. 3. The automatic accompaniment device according to claim 2, wherein, when the key is guided according to the method, the light emission form of the key corresponding to the route and the other keys to be pressed are made different. 4. A method according to claim 1, wherein, when a base sound or a tension sound is added to the code read by said reading means, the guidance control means outputs a key light emission mode corresponding to a constituent sound of the code and a base sound. 3. The automatic accompaniment device according to claim 2, wherein a light emission form of the corresponding key and a light emission form of the key corresponding to the tension sound are distinguished from each other. 5. A method according to claim 1, wherein, when a base sound is added to the code read by said reading means, if the root of the code and the base sound are different fraction codes, the guidance control means outputs the base sound. The light emission form of the corresponding key and the light emission form of the key corresponding to the root among the constituent sounds of the chord,
The light emission form of each key corresponding to the constituent sounds other than the chord root is distinguished from each other. 3. The automatic accompaniment apparatus according to claim 2, wherein a light emission mode of each key corresponding to a constituent sound other than the above is distinguished from each other. 6. A storage for storing an accompaniment pattern in which chords to be accompanied are stored in the order of music progression, and fingering data for instructing which key on the keyboard to position the left and right fingers in association with the accompaniment pattern. Means for reading an accompaniment pattern and corresponding fingering data from the storage means in synchronization with a designated tempo; playing a chord to be accompanied in accordance with the fingering data read by the reading means. An automatic accompaniment apparatus comprising: a guiding unit that guides a finger position when performing the operation and guides a key corresponding to a constituent sound of a chord to be accompanied in accordance with the read accompaniment pattern.