JPH0573059A - Chord dictionary device - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to enable a user to easily refer to a chord such as a chord name, chord constituent sound, or chord pronunciation regarding a chord desired. [Structure] When the user knows the chord name and wants to know the constituent sound, the user specifies a route by pressing only one key on the keyboard unit 101. Also, the switch unit 1
The code type is designated by the ten key 04. As a result, a new code type is determined by the code type currently determined and the code type designated by the ten keys. Then, the constituent sound of the chord decided from the decided chord type and the root designated in the chord range is reproduced on the keyboard section 10.
This is displayed by causing the LED section 103 of the corresponding key on 1 to emit light. In addition, the user can use the keyboard 10
By pressing a plurality of keys with 1, it is possible to display the route and the code type of the corresponding code on the LCD display unit 115. Further, the chord sound is generated by the tone generation circuit 11
You can also pronounce from 0.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a code dictionary device for a user to refer to a desired code.

[0002]

2. Description of the Related Art Conventionally, there is an electronic musical instrument that allows a user to refer to a chord such as a chord name or chord pronunciation relating to a desired chord.

In such an electronic musical instrument, the user
For example, by pressing a plurality of keys in a predetermined chord key range on the keyboard as shown in FIG. 17, the chord constituent tones are designated. In response to this designated operation, the electronic musical instrument discriminates the chord from the key pressed by the user, displays the chord name on a display section (not shown), and pronounces the chord corresponding to the chord.

Further, in order to assist the chord designating operation by the user, the key to be depressed by the user as a chord constituting sound is, for example, above each key shown in FIG. 17, according to the control data stored in the ROM pack or the like. There is also an electronic musical instrument having a function of instructing by means of a guide LED (black circle in FIG. 17) provided in the.

[0005]

However, when referring to the chord, the user does not always remember the constituent sounds of the chord, so the user blindly presses the key in the chord range. Will result in the specification of.

Even when the chord sound of the chord is designated by the ROM pack or the like, the chord desired by the user is not always designated by the ROM pack, so that the usability is not good. ..

An object of the present invention is to make it possible for a user to easily refer to a chord such as a chord name, chord constituent tone, chord pronunciation, etc., relating to a chord desired.

[0008]

The present invention firstly has a keyboard means for allowing a user to specify a constituent sound of a root or a chord.

Next, it has a code type designating means for allowing the user to designate a code type. The means is, for example, a numeric keypad. In addition, when two or more keys are pressed by the keyboard means, there is a chord judging means for judging a chord having each scale note corresponding to each depressed key as each constituent note.

Further, it has a code display means such as an LCD display device for displaying the route and the code type of the code determined by the code determination means. On the other hand, when only one key is pressed on the keyboard means, it has route determination means for determining the route corresponding to the depressed key. The means further determines, when the discrimination result by the chord discriminating means is unconfirmed, the scale note having the lowest scale among the scale notes corresponding to each key pressed by the keyboard means as the root. Can be configured to.

Next, there is provided code type determining means for determining a new code type from the code type designated by the code type designating means and the code type currently determined. The means stores, as a code transition table, all new code types that can be determined from, for example, all code types that can be specified by the code type specifying means and all code types that can be presently determined. .. Then, by referring to the code transition table by the code type designated by the code type designating means and the currently determined code type, a new code type corresponding to them is determined.

Further, it has chord constituent sound display means for displaying the constituent sound of the chord decided by the chord type decided by the chord type decision means and the route decided by the route decision means. This means is, for example, a lamp display means provided for each key on the keyboard. The means can also be configured to display the key corresponding to the root of the chord to be displayed separately from the keys corresponding to the constituent sounds other than the root.

In addition to the above-mentioned configuration of the present invention, the constituent sound of the chord determined by the chord type decided by the chord type decision means and the route designated by the route designation means or the chord discrimination means discriminates. It may be configured to further include a chord producing means for producing chord constituting tones.

[0014]

When the user knows the chord name and wants to know the constituent sounds of the chord, the user can designate the root by pressing only one key on the keyboard means, and the chord species can be designated by the chord species designating means. By designating, the constituent sounds of the chord determined from them can be displayed on the chord constituent sound display means.

In this case, the code type determining means determines a new code type by the code type currently determined and the code type designated by the code type designating means, so that the user is currently determining. New code types can be specified one after another in association with code types. For example,
The user can specify the minor sevens code by further specifying the sevens code after specifying the minor code as the code type.

Further, when the determined constituent sound of the chord is displayed on the constituent chord sound display means, the LED of the constituent sound corresponding to the root of the chord is made to blink so that the chord constituent sound of the chord is displayed. Even when the constituent sounds are indicated, the user can easily identify which constituent sound corresponds to the route.

Next, when the user wants to know what kind of code the key he / she presses constitutes, he / she presses two or more keys by the keyboard means, thereby pressing each key. The chord display means can display the chord root and the chord type of chords, each of which is a constituent note corresponding to the key.

Further, the user can cause the chord sounding means to sound the chord decided as described above.

[0019]

Embodiments of the present invention will now be described in detail with reference to the drawings. Configuration of Embodiment FIG. 1 is a configuration diagram of an embodiment of the present invention.

First, the keyboard section 101 and the LED section 103 are
It has an appearance similar to that of FIG. 17 described above. Key press detection circuit 1
Reference numeral 02 detects the state of key depression or key release on the keyboard unit 101.

The switch section 104 includes a code switch CHORD for setting or canceling a code dictionary mode in which a user can refer to a code, and a numeric keypad as shown in FIG. 2 for designating a code type. Is provided. It should be noted that the designation of the route at the time of chord designation is performed using the keys in the chord key range of the keyboard unit 101.

The switch (SW) detection circuit 105 detects the switch setting state in the switch section 104. L
As shown in FIG. 3, the CD display unit 115 emits a root display unit that displays the root of the chord designated by the user as an alphabet corresponding to the note name, and a chord type that emits a character portion indicating the chord type. And a code type display section for displaying the code type.

The various table sections 109 store a key-depression code determination table and a code LCD table used in the code key processing described later, and a code LED table used in the code change handling processing described later.

The CPU 106 is a program ROM 107.
Working RA according to the control program stored in
While using M108 as needed, various controls for chord determination and tone generation are performed.

The timer section 114 is used in the route blinking interrupt processing and the like which will be described later. Musical tone generation circuit 1
10 generates musical sound data according to an instruction from the CPU 106. In this circuit, PCM system, DPCM
It is possible to adopt various musical tone generation methods such as a method, an ADPCM method, a frequency modulation method, a phase modulation method, and a harmonic overtone addition method.

The D / A converter 111 is a tone generation circuit 11
The tone data generated by 0 is converted into an analog tone signal. The analog tone signal is emitted from the speaker 113 via the amplifier 112. Description of Overall Operation of Embodiment The overall operation of the embodiment of the present invention having the above-described configuration will be described with reference to the operation flowchart of the main flow of FIG. The main flow is based on the CPU of FIG.
106 is realized as an operation for executing the control program stored in the program ROM 107.

First, when the power is turned on, the CPU 10
An initial process for initializing various registers in 6 and various variables in the working RAM 108 is executed (step S401).

After that, the loop processing such as steps S402 to S406 in FIG. 4 is repeatedly executed until the power is turned off. In the SW scan process of step S402, the state of the switch unit 104 detected by the switch detection circuit 105 in FIG. 1 is scanned.

In the keyboard processing of step S403, if the chord switch CHORD of the switch unit 104 of FIG. 1 is not in the chord dictionary mode, based on the state of the keyboard unit 101 detected by the key depression detection circuit 102 of FIG. Then, the process of sounding or muting is performed. In the code dictionary mode, code key processing described later is executed.

In the function process of step S404, the code switch process and the numeric keypad process, which will be described later, are executed based on the scanning result of the switch state of the switch section 104 of FIG. 1 by the switch scan process of step S402.

The determination in step S405 is YES when the code specified by the user has changed in the code dictionary mode, and as a result of the determination, the code key range (see FIG. 17).
Step S4 for controlling the lighting of the LED in
The code change handling process of 06 is executed.

Loop processing including the above processing is repeatedly executed. Among the processes described above, the process in the code dictionary mode particularly relevant to the present invention will be described in detail. Outline of Code Dictionary Mode First, an outline of the code dictionary mode will be described.

The user can alternately switch between the chord dictionary mode and the normal performance mode with automatic accompaniment by pressing the chord switch CHORD of the switch section 104 shown in FIG. 1 once.

In the chord dictionary mode, when the user knows the chord name and wants to know its constituent sounds, first,
The chord root is specified by pressing any key in the chord key range (see FIG. 17) of the keyboard section 101 (FIG. 1), and at the same time, the ten keys (see FIG. 2) of the switch section 104 in FIG. 1 are used. Specify the code type. As a result, the specified chord is discriminated by the chord key processing which will be described later executed in the keyboard processing of step S403 of FIG. 4 and the ten key processing which will be described later which is also executed in the function processing of step S404. Then, based on the determination result, the chord change handling process of step S406 is executed, and the LED of the key corresponding to the constituent sound of the designated chord is turned on in the chord range of the keyboard unit 101 of FIG.

When the user wants to know what kind of code the key he / she pressed constitutes, the keyboard section 101
In the chord key range (see FIG. 17) (see FIG. 1), keys with three to four tones are depressed. As a result, code discrimination is performed based on the depressed key, and the LCD display unit 115 (see FIG. 3) in FIG. 1 displays the route and the type of the discriminated code.

Here, in the chord range of the keyboard section 101, LE
Among the code keys whose D is turned on (keys forming the code), the LED indicating the key corresponding to the route is blinked. This allows the user to easily determine which key corresponds to the root. This blinking process is performed by the timer unit 11 of FIG.
CPU 106 in response to interrupts from the CPU 4 at regular intervals.
Is realized by a route blinking interrupt process which will be described later and is executed independently of the program of the main flow of FIG. Description of Registers Used in Code Dictionary Mode Before describing specific processing operations of the embodiment of the present invention in the code dictionary mode, registers in the CPU 106 used in this mode will be described below.
These registers are shown in FIG.

In FIG. 5, "1" is set in the register CJF in the chord dictionary mode, and "0" is set in the normal performance mode. In the register CF, "0" is set in the undefined state, "1" is set in the code undefined state, and "2" is set in the route undefined state.

In the registers CH and RT, the code type and the route finally decided by the ten-key process or the code key process described later are stored. In this case, register CH
Is a hexadecimal representation corresponding to each code type from "0" to "1".
Any value of 0 ”(H) is stored, and a value“ ff ”representing a non-code is stored when the chord is undetermined. Further, the register RT stores 12 notes of note names C to B in one octave. One of the values of "0" to "B" is stored in hexadecimal notation corresponding to any of the note names, and a value "ff" representing a non-chord is stored when the route is undetermined.

The contents of the register FT are the contents of the timer section 11
4 is an LED flow timer that is incremented each time an interrupt for LED blinking interrupt processing described later by 4 occurs.

The register FK stores a key code for turning on the LED in the code key area. Description of Code Switch Process The user can alternately set or cancel the code dictionary mode by pressing the code switch CHORD once in the switch unit 104 of FIG. This control is realized as a code switch process executed in the function process of step S404 in FIG.

The code switching process will be described below.
Details will be described with reference to the operation flowchart of FIG. It should be noted that this operation flowchart is based on the CPU 106 of FIG.
Is realized as an operation for executing the control program stored in the program ROM 107.

The code switch process of FIG. 6 is started in the function process of step S404 of FIG. 4, which is executed immediately after the user presses the code switch CHORD.

First, in step S601, the value "ff" corresponding to the non-code is stored in the registers CH and RT which store the code type and the route. Next, in step S602, the LCD display unit 115 of FIG. 1 is caused to display a non-code display "-".

Then, in step S603, as shown in FIG.
The LED displayed in the chord key range (FIG. 17) of the keyboard section 101 is turned off. Further, in step S604, if there are any chords (chords) that are currently sounding in the musical tone generating circuit 110 of FIG. 1, those are released.

Next, in step S605, it is determined whether or not the content of the register CJF is "1", that is, whether or not it has been the code dictionary mode until now. Until now, if the mode is not the code dictionary mode, the determination in step S605 is N.
When the code switch CHORD becomes O and the code switch CHORD is pressed, a transition process to the code dictionary mode (mode IN
Processing) is performed. This mode IN process is performed in step S
This is realized as the processing of 606 to S610.

First, in step S606, the register FK is set to L in the chord range of the keyboard section 101 of FIG.
The lowest note F ₂ of the keys provided with the ED (see FIG. 17)
The value “5” indicating the is stored. Then, step S60
7, the LED of the key of the note name F _{2 in} the chord range corresponding to the register FK is turned on.

Subsequently, in step S608, LE
The content of the register FT, which is the D flow timer, is "0".
Is reset to. Also, in step S609,
The value "1" indicating the code undetermined state is set in the register CF.

Further, in step S610, the value "1" indicating the code dictionary mode is set in the register CJF. Mode I in steps S606 to S610 above
In contrast to the N process, if the chord dictionary mode has been used so far, the determination in step S605 becomes YES, and in response to the chord switch CHORD being pressed, transition processing from the chord dictionary mode to the normal performance mode ( Mode OU
T processing) is performed. The mode OUT processing is realized as the processing of steps S611 and S612.

First, in step S611, the register CF is set to the value "0" indicating the unconfirmed cancellation state. Further, in step S613, the register CJF
Is set to the value "1" indicating the normal performance mode. Description of the LED blinking interrupt process When the chord switch mode is entered and the chord dictionary mode is entered, the LEDs in the chord key range of the keyboard section 101 of FIG. 1 are blinked one after another in order to enhance the visual effect of the electronic musical instrument. .. This control is realized as an LED blinking interrupt process shown in the operation flowchart of FIG. This operation flow chart is shown in FIG.
In response to interrupts from the timer unit 114 of the above, at regular intervals, independently of the main flow program of FIG.
It is realized as an operation for executing the control program stored in the program ROM 107. The time interval of the interrupt from the timer unit 114 is 50 μsec in this embodiment.
Is.

First, in step S701, it is determined whether or not the content of the register CF is a value other than the value "0" indicating the code undecided cancellation state. If this judgment is NO, it means that it is in a normal playing state, or the chord is fixed in the chord dictionary mode and the LE corresponding to the chord is set.
Since the lighting control of D should be performed, the interrupt process for blinking the LED for enhancing the visual effect is not substantially performed.

When the content of the register CF is a value "1" indicating a code indeterminate state or a value "2" indicating a route indeterminate state,
When the determination in step S701 is YES, the processes in and after step S702 are executed.

First, in step S702, the value of the register FT, which is the LED flow timer, is incremented. The value of this register FT is 100
If it does not become 0, the determination in step S703 becomes NO, and the LED blinking interrupt processing is ended as it is. As described above, the LED blink interrupt processing interrupt occurs every 50 μsec, and the register F
The value of T is incremented. Therefore, the register FT
During the period of 50 msec until the value of becomes 1000, the processing after step S704 is not executed. This 50ms
ec becomes the blinking interval of the LED.

When the value of the register FT reaches 1000, the determination in step S703 becomes YES and step S7
The processing of 04 is executed. In step S704, the register F is used for the next counting operation of 50 msec.
The value of T is reset to "0" again.

Next steps S705, S706 and S7
In the processing of 07, the LED of each key of the note names F _{2 to} E ₃ (see FIG. 17) in the chord range of the keyboard section 101 of FIG. 1 is set to 50 mse.
This is a process for cyclically lighting up one after another at intervals of c.

That is, in step S705, the register FK
The value of "1" corresponds to the key of the highest note E _{3 in} the chord range "1"
It is determined whether or not it has become 0 "(H), and this determination is NO.
Then, in step S707, the value of the register FK is incremented by +1. Also, if YES is determined in step S705, the in step S706, the value of the register FK is returned to the value corresponding to the key of the lowest note F ₂ code key range "5" (H).

Then, in step S708, the LED of the key in the code key range corresponding to the value of the register FK whose value is controlled as described above is turned on. Description of Code Key Process Next, the code key process executed in the keyboard process of step S403 of FIG. 4 will be described in detail with reference to the operation flowchart of FIG. This operation flowchart is realized as an operation in which the CPU 106 in FIG. 1 executes the control program stored in the program ROM 107.

First, in step S801, it is determined whether the content of the register CJF is "1", that is, whether the current mode is the code dictionary mode. The current performance mode is normal and the determination in step S801 is NO.
Then, the code key processing shown in FIG. 8 is not substantially executed. In this case, a normal key depression / key release process (not shown) in the keyboard process S403 of FIG. 2 is executed.

In the current code dictionary mode, step S80
If the result of the determination in step 1 is YES, the processes in and after step S802 are executed. First, in step S802, it is searched whether or not the user has depressed the key in the chord key range (see FIG. 17), and in step S803, it is determined whether or not the key has been depressed.

If the determination in step S803 is NO, the code key process is immediately terminated and the process returns to the loop process of the main flow of FIG. If the determination in step S803 is yes,
In the next step S804, it is determined whether or not the number of pressed keys is one.

If the number of keys pressed is one, the user has pressed any key in the chord key range (see FIG. 17) of the keyboard section 101 (FIG. 1) to specify the chord root. Therefore, in step S807, the key name of the depressed key is stored in the route storing register RT.

Subsequently, in step S808, it is determined whether or not the content of the register CF is a value "1" indicating that the code is currently undecided. This judgment is Y
If it is ES, the value "0" indicating the major code (Maj) is forcibly stored in the register CH for storing the code type in step S809. As a result, when the user presses any key in the chord key range while the chord is undetermined, the root is determined by the key depression and the chord type is set to the major chord for the time being.

On the other hand, if the decision in step S808 is NO, it means that the user has already specified the chord type and, in that state, designated only the root by pressing the key. It proceeds to S812.

Since the root and the code type have been determined as described above, in the subsequent step S812, the register C
The value “0” indicating the release of the undetermined state is stored in F. Next, in step S813, the code type and route determined as the contents of the registers CH and RT are used to refer to the code LCD table in the various table unit 109 of FIG. 1
The LCD display unit 115 (see FIG. 3) displays the confirmed code route and code type.

It should be noted that the keyboard section 1 shown in FIG.
In the chord key range of 01, the LED of the key corresponding to the confirmed constituent sound of the chord is also turned on.
In the main flow of FIG. 2, the determination in step S405 is YES, and the code change handling process of step S406 is executed to realize the operation. This will be described in detail later.

Subsequently, in step S814, the tone generation instruction of the tone generation circuit 11 of FIG. 1 is issued to instruct the generation of the tone of each constituent tone corresponding to the code determined as the contents of the registers CH and RT.
This is done for 0 and a chord (chord) is pronounced. This allows the user to auditorily confirm the code specified by the user.

After the processing of step S814, the code key processing ends. Steps S807 to S809 described above
The process of S814 is performed when the user presses only one key in the chord key range (see FIG. 17) of the keyboard unit 101 (FIG. 1) to specify the chord root. On the other hand, when the user presses one or more keys, the determination in step S804 described above is NO.

In this case, since the user has pressed a plurality of keys in the chord key area in order to directly specify the chord constituent tones, the user depresses in the chord key area in step S805. Code determination is performed based on a plurality of keys. This determination process is similar to the conventional code determination process, and the code type and the route are determined while referring to the key depression code determination table stored in the various table unit 109 of FIG. 1, for example.

In the next step S806, it is judged whether or not the code can be confirmed as a result of the above-mentioned code judgment processing. The code cannot be confirmed and the determination in step S806 is N.
When it becomes O, the note name of the key having the lowest note name among the plurality of keys pressed by the user is stored in the route storing register RT. The operation thereafter is the above-described step S8 when the number of keys pressed by the user is one.
This is the same as the processing after 08.

As a result of the code judgment processing in step S805, the code can be confirmed, and the judgment in step S806 is YES.
When S is reached, the contents of the registers CH and RT indicating the code type and the route are set based on the determination result.

Since the root and the code type have been determined as described above, in the subsequent step S812, the register C
The value “0” indicating the release of the undetermined state is stored in F. Next, in step S813, the LCD display unit 1 of FIG.
In 15 (see FIG. 3), the confirmed code root and code type are displayed. Than this _2, the user is able to visually confirm the code to configure sound the keys that you have to key depression.

Subsequently, in step S814, the tone generation instruction of the tone generation circuit 11 of FIG. 1 is issued to instruct the generation of the tone of each constituent tone corresponding to the code determined as the contents of the registers CH and RT.
This is done for 0 and a chord (chord) is pronounced. This allows the user to auditorily confirm the code specified by the user.

After the processing of step S814, the code key processing ends. Description of numeric keypad process When the user selects the switch unit 1 in FIG.
In 04, by pressing any of the ten keys, the code type can be directly specified (see FIG. 2). This control is realized as a ten-key process executed in the function process of step S404 in FIG. The route is specified on the keyboard 101 (Fig. 1).
It can be done by pressing any key in the chord range of, and as mentioned above, the specified root tone is
It is set in the register RT in the processing of step S807 in FIG.

The ten-key processing will be described in detail below with reference to the operation flowchart of FIG. Note that this operation flowchart is realized as an operation in which the CPU 106 in FIG. 1 executes the control program stored in the program ROM 107.

The ten-key processing of FIG. 9 is executed immediately after the user presses the ten-key, and the step S40 of FIG. 4 is executed.
It is started in the function processing of No. 4. First, in step S901, it is determined whether the pressed numeric keypad is any one of numbers 0 to 8. Now, the operation of designating one of the code types is assigned to the ten keys of numbers 0 to 8. An operation for canceling the designation of the chord type is assigned to the ten-key pad.

Therefore, when the ten-key pad is pressed, the determination in step S901 is NO and step S901
As the processing of 908 to S913, processing for canceling the designation of the code type is executed.

That is, in step S908, the value "1" indicating the code undetermined state is stored in the register CF. Next, in step S909, if there are any chords (chords) currently being sounded by the tone generation circuit 110 of FIG. 1, those are released.

Next, in step S910, the LCD display unit 115 shown in FIG. 1 is caused to display a non-code display "-". Further, in step S911, the value of the register FK is set to the value "5" (H) corresponding to the key of the lowest note F _{2 in} the chord key range. And step S
At 912, the LED of the key of the lowest tone F _{2 in} the chord range corresponding to the value of the register FK is turned on.

Further, in step S913, the LED
The value of the register FT, which is a flow timer, is reset to "0". After the processing of step S913, the ten key processing is ended.

After the above-mentioned processing for canceling the designation of the chord type is executed, the LED in the chord key area of the keyboard section 101 of FIG. 1 is subjected to the above-described LED blinking interrupt processing of FIG.
The operation of blinking one after another is repeated.

Next, when the user presses any one of the ten keys 0 to 8, the determination in step S901 becomes YES.
When the result is S, the operation of designating the code type assigned to the ten key is executed.

First, in step S902, it is determined whether or not the current content of the register CF is the value "1" indicating the code undetermined state. Now, when the root has already been designated by the user pressing any key in the code key range and the register CF is set to the value "0" indicating the unconfirmed release state (see step S812 in FIG. 8). In step S902, the determination result in step S902 is NO, and the code type designation process in step S904 is executed while the route is fixed.

If the register CF has the value "1" indicating the code undetermined state, the determination in step S902 is YES, and the register CF indicates the route undetermined state "2" in step S903. After being changed to, the code type designation process of step S904 is executed.

Further, when the value of the register CF is "2" indicating the route undetermined state, the determination in step S902 is NO, the route remains undetermined, and the code type in the next step S904. The specified processing of is executed.

In step S904, the code transition table stored in the various table units 109 of FIG. 1 is set by the code type designated by the user with the ten keys and the current code type indicated as the value of the register CH. By referring, the new code type is confirmed,
A value corresponding to the code type is newly set in the register CH.

FIG. 10 shows an example of the code transition table.
The code type shown at the intersection of the row where the value of the register CH indicating the current code type matches the value shown in the leftmost column and the column where the number on the numeric keypad and the value shown in the top row match , Becomes the code type that is newly confirmed. For example, if the currently confirmed chord type is a minor chord (min) and the number 10 key for instructing the 7th chord (7th) is pressed, the chord type to be decided newly will be the minor 7th chord. It will be a code (min7th). Also, for example, if the current chord type is undetermined and the ten-key pad for instructing the diminished code (dim) is pressed, the newly decided chord type is the diminished code ( dim).

In this way, by the reference operation of the code transition table in step S903, the user associates with the currently confirmed code type with the ten keys,
You can specify new code types one after another. Then, the user can specify all kinds of chord types shown in the chord transition table by pressing the ten keys up to three times. For example, the user may press the ten keys in the order of 0 (min), 1 (7th) and 8 (-5th) in order to specify the minor sevens flat five code (min7-5).

As described above, the code type is register C
After being determined as the value of H, in step S905,
The code LCD table in each table unit 109 of FIG. 1 is referred to by the code type determined as the content of the register CH, and the LCD display unit 115 of FIG. 1 (see FIG. 3) is based on the LCD drive signal obtained as a result. The confirmed code type is displayed on.

After the processing of step S905, the ten key processing is ended. For code change response processing and route blinking interrupt processing
Description Finally, the code change handling process and the route blinking interrupt process of step S406 of FIG. 4 will be described.

As described above, when there is a change in the code specified by the user, step S in the main flow of FIG.
The determination of 405 is YES. As a result, step S4
The code change handling process of 06 is executed, and the lighting control process of the LED of the key in the code key area corresponding to the code change is executed.

Here, among the keys constituting the code displayed by the lighting of the LED, the LED indicating the key corresponding to the root is blinked. This allows the user to easily determine which key corresponds to the root. This blinking process is realized by the route blinking interrupt process.

First, before describing the operations of these processes in detail, the configuration of the LED section 103 of FIG. 1 related to the processes will be described. FIG. 11 is a configuration diagram of the LED unit 103 related to the code change handling process.

In FIG. 11, the guiding LED 1101 shown as a black circle in FIG. 17 is connected to the latch 1104 via the resistor 1102 and the diode 1103. Then, each LED 1 corresponding to the key of the note name F _{2 to} E ₃
The lighting operation of 101 is realized as follows.

That is, the CPU 106 of FIG. 1 sets the data I ₀ in which the bit corresponding to the LED to be turned on is set to “1”.
~ I ₁₁ is input to Port A, and the latch enable signal LE is set to Port B. As a result, the LED drive output signals Q _{0 to} Q ₁₁ are output from the latch 1104, and the desired L
The ED 1101 is turned on.

Next, the registers in the CPU 106 used in the code change handling process and the route blinking interrupt process will be described. These registers are shown in FIG. In FIG. 14, the register CL stores the code LED output data indicating the constituent sounds of the code based on the user's instruction. This data is 12-bit data, and each bit corresponds to each of 12 sounds in one octave. Then, by configuring any one of these bits, 3 bits or 4 bits, to "1", the constituent sound of the chord is expressed. The register RL is a register for storing data in which the bit corresponding to the root of the 12-bit data is set to "1". The register LF currently has an LED 1101 (FIG. 11) corresponding to the route.
If is on, "1" is set; if it is off, "0" is set. The content of the register CLT is a code LED timer that is incremented each time the timer unit 114 generates an interrupt for route blinking interrupt processing. In addition, general-purpose registers S, T, X, etc. are prepared.

Next, the code change handling process of step S406 of FIG. 4 will be described in detail with reference to the operation flowchart of FIG. This operation flowchart is realized as an operation in which the CPU 106 in FIG. 1 executes the control program stored in the program ROM 107.

First, in step S1201, as a result of the code change, it is determined whether or not the designated code is non-code, that is, undetermined. This determination process is realized as a process of determining whether or not the register CF is not the value “0” indicating the code indeterminate release state.

If the register CF has the value "1" indicating the code undetermined state or the value "2" indicating the route undetermined state, the determination in step S1201 is YES and the registers S and T are registered in steps S1208 and S1209. "0" is substituted. Then, in steps S1210 and S1211, the values "0" of the registers S and T are substituted into the registers CL and RL.

Here, the contents of the registers CL and RL are
Each LED 1101 of FIG. 11 in the LED unit 103 (FIG. 1)
The contents of the data I _{0 to} I ₁₁ given to the port A of the latch 1104 are determined in order to perform the lighting control of the latch 1104. However, since the contents of the registers CL and RL become “0” as described above, All the LEDs 1101 will be turned off.

However, in the LED blinking interrupt processing of FIG. 7 described above, the determination in step S701 is YES.
Therefore, the LED in the code key area of the keyboard unit 101 of FIG.
The action of visual effect, in which is blinking one after another, is repeated.

On the other hand, one code is determined by the determination of the root and the code type by the code key processing of FIG. 8 or the ten key processing of FIG. 9, and the register CF becomes the value “0” indicating the code undetermined release state. If so, the determination in step S1201 is NO and step S120
2 is executed.

In step S1202, the value of the route (see steps S807, S810, and S811 in FIG. 8) stored in the register RT by the code key processing in FIG. 8 is stored in the register X. This value is any one of "0" to "B" in hexadecimal notation depending on which one of the pitch names C to B in one octave the root is.

In the next step S1203, the code type determined by the code key process of FIG. 8 or the ten key process of FIG. 9 and stored in the register CH (step S80 of FIG. 8).
9, S810, refer to S904 in FIG. 9)
Code L stored in various table units 109 in FIG.
The ED table is referred to and the code LED data is assigned to the register S.

In the code LED table, for example, FIG.
As shown in, the chord LED data indicating which scale note in one octave is the constituent note is associated with each chord whose root is the note name C. Therefore,
The register S has a code L corresponding to the changed code type.
ED data will be stored.

Next, in step S1204, 12-bit data which is "080" in hexadecimal representation is stored in the register T. In the contents of this register, only the bit corresponding to the note name C is "1" in the initial state, and the note name of the root note of the chord indicated by the chord LED data of the register S is C. Is shown.

Subsequently, steps S1205 → S1206.
By the loop processing of S1207 and S1205, the 12-bit code LED data of the register S and the 12-bit data indicating the route of the register T are rotated to the left by the value of the register X indicating the changed route ( Bit rotation).

As a result, in the 12-bit code LED data of the register S, the bit corresponding to the constituent sound of the changed code becomes "1", and the register T of 1
In the 2-bit data, the bit corresponding to the changed code root is "1". Step S1210
And S1211, the contents of these registers S and T are stored in the registers CL and RL as code LED output data and route data. FIG. 16 shows an example of each chord LED output data obtained by the above-described rotation processing when the chord type is the major chord and the pitch name of the root note is C to B.

Subsequently, in step S1212, the register C
The content of LT is cleared to "0", and step S1213
Then, the contents of the register LF is the LED 11 corresponding to the route.
01 (FIG. 11) is set to a value “1” indicating that the light is on. These will be described later.

Then, in step S1214, the code LED data indicating the constituent sound of the changed chord is stored and the content of the register CL is changed to the LED section 103 (FIG. 1).
Data I _{0 to} I to the port A of the latch 1104 of FIG.
₁₁ is output, and the latch enable signal LE is output to Port B.
Is set. This causes the latch 1104 to LE
The D drive output signals Q _{0 to} Q ₁₁ are output, and the LED 1101 of the chord key corresponding to the changed constituent sound of the chord is turned on.

With the above, the code change handling process of step S406 of FIG. 4 is completed. Next, the route blinking process will be described in detail with reference to the operation flowchart of FIG. In this operation flowchart, the CPU 106 executes the control program stored in the program ROM 107, independently of the program of the main flow of FIG. 4, in response to the interrupt from the timer unit 114 of FIG. It is realized as an action. In the case of the present embodiment, the time interval of the interrupt from the timer unit 114 is 50 as in the case of the LED blinking interrupt processing of FIG. 7 described above.
μsec.

First, in step S1301, the code L
The value of the register CLT which is the ED timer is incremented. The value of this register CLT is 2000
If not, the determination in step S1302 becomes NO, and the route blinking interrupt process is terminated. As described above, the interrupt for the route blinking interrupt processing occurs every 50 μsec, and the register C
The value of LT is incremented. Therefore, register C
During the period of 100 msec until the LT value reaches 2000, the processes of step S1303 and thereafter are not executed. The LED 1101 (see FIG.
It becomes the blinking interval of 1).

When the value of the register CLT becomes 2000,
The determination in step S1302 is YES, and the process of step S1303 is executed. In step S1303, the value of the register CLT is reset to "0" again for the next counting operation of 100 msec.

Next, in step S1304, it is determined whether the content of the register LF is "1", that is, whether the LED 1101 (FIG. 11) corresponding to the route is lighting.

When the LED corresponding to the route is lit and the determination in step S1304 is YES, in the next step S1305, the content of the register LF is a value "" indicating that the LED 1101 corresponding to the route is off. It is set to 0 ". Then, in step S1306, the content obtained by subtracting the content of the register RL from the content of the register CL is given to Port A of the latch 1104 of FIG. 11 of the LED unit 103 (FIG. 1) as data I _{0 to} I ₁₁ . In this case, since the bit corresponding to the root sound becomes "0" by the above subtraction processing, the LE corresponding to the root is
D1101 is turned off.

On the contrary, if the LED corresponding to the route is off and the determination in step S1304 is NO, in the next step S1307, the contents of the register LF are changed to
The LED 1101 corresponding to the route is set to the value "1" indicating that the LED 1101 is lighting. Then, step S13
At 08, the contents of the register CL are
Data I is input to Port A of the latch 1104 of FIG. 11 (FIG. 1).
Given as _0- I ₁₁ . In this case, since the bit corresponding to the root sound is “1”, the LE corresponding to the root is
D1101 is turned on.

By repeating the above two operations alternately every 100 msec, the LED indicating the route is displayed.
1101 is flashed, which allows the user to easily determine which key corresponds to the root.

[0116]

According to the present invention, when the user knows the chord name and wants to know its constituent sounds, the user can press only one key on the keyboard means or by a predetermined route designating means. By designating the root and designating the chord type by the chord type designating means, it becomes possible to display the chord constituting sound determined from them on the chord constituting sound display means.

In this case, since the code type determining means determines a new code type by the code type currently determined and the code type designated by the code type designating means, the user is currently determining. It becomes possible to successively specify new code types in association with the code types.

When the confirmed constituent sound of the chord is displayed on the chord constituent sound display means, the LED of the constituent sound corresponding to the root of the chord is made to blink so that the chord constituent sound of the chord is displayed. Even when the constituent sounds are indicated, the user can easily identify which constituent sound corresponds to the route.

In addition to the above-mentioned functions, when the user wants to know what kind of code the key pressed by him / herself, he / she presses two or more keys by the keyboard means.
It is possible to display the chord display means on the chord display means the chord root and the chord type of which each scale note corresponds to each depressed key.

Further, the user can also cause the chord sounding means to sound the chord determined as described above. As described above, according to the present invention, it is possible to refer to a code in a free format.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

FIG. 2 is a configuration diagram of a numeric keypad.

FIG. 3 is a configuration diagram of an LCD display unit.

FIG. 4 is an operation flowchart of a main flow.

FIG. 5 is a diagram showing a register used in this embodiment.

FIG. 6 is an operation flowchart of a code switch process.

FIG. 7 is an operation flowchart of LED blinking interrupt processing.

FIG. 8 is an operation flowchart of code key processing.

FIG. 9 is an operation flowchart of ten-key processing.

FIG. 10 is a diagram showing a code transition table.

FIG. 11 is a configuration diagram of an LED unit related to code change handling processing.

FIG. 12 is an operation flowchart of chord change handling processing.

FIG. 13 is an operation flowchart of route blinking interrupt processing.

FIG. 14 is a diagram showing registers related to code change handling processing and route blinking interrupt processing.

FIG. 15 is a diagram showing a code LED table.

FIG. 16 is an operation explanatory diagram of chord change handling processing.

FIG. 17 is an explanatory diagram of a chord key range and a melody key range.

[Explanation of symbols]

 101 Keyboard 102 Key Press Detection Circuit 103 LED Section 104 Switch Section 105 Switch Detection Circuit 106 CPU 107 Program ROM 108 Working RAM 109 Various Table Section 110 Musical Sound Generation Circuit 111 D / A Converter 112 Amplifier 113 Speaker 114 Timer Section 115 LCD Display Department

Claims (8)

[Claims] 1. A route specifying unit for allowing a user to specify a route, a code type specifying unit for allowing a user to specify a code type, and a code type specified by the code type specifying unit and a code type currently determined. A chord type deciding means for deciding a new chord type, and a chord component sound display for displaying a chord singing tone decided by the chord type decided by the chord type deciding means and the route designated by the route designating means. A code dictionary device comprising: 2. The apparatus further comprises chord sound producing means for producing a constituent sound of a chord decided by the chord species decided by the chord species deciding means and a route designated by the route designating means. The code dictionary device according to claim 1. 3. A keyboard means for allowing a user to specify a constituent sound of a root or a chord, a chord type designating means for designating a chord type for a user, and two or more keys are depressed by the keyboard means. In the case of playing, a chord discriminating means for discriminating a chord having each musical note corresponding to each depressed key as a constituent note, and a chord for displaying a chord root and a chord discriminated by the chord discriminating means. Display means, route determination means for determining a route corresponding to the depressed key when only one key is depressed on the keyboard means, and chord type designated by the chord type designating means And a code type currently determined, and a code type determining means for determining a new code type, and a code type determined by the code type determining means and the route determined by the route determining means. A chord dictionary sound display means for displaying a chord constituent sound, and a chord dictionary device. 4. The route determining means is further arranged such that, when the discrimination result by the chord discriminating means is unconfirmed, the scale of the scale notes corresponding to each key pressed by the keyboard means is the highest. The chord dictionary device according to claim 3, wherein a low scale note is determined as a root. 5. The new code that can be determined from all the code types that can be designated by the code type designating unit and all the code types that can be presently determined as the code type determining unit. By storing the species as a code transition table, and referring to the code transition table by the code species specified by the code species specifying means and the currently confirmed code species, a new code species corresponding to them is determined. The code dictionary device according to any one of claims 1 to 4, wherein: 6. The chord dictionary device according to claim 1, wherein the chord component sound display means is a lamp display means provided for each key on the keyboard. 7. A constituent sound of a chord determined by the chord species determined by the chord species determining means and a route designated by the route designating means, or a constituent sound of the chord discriminated by the chord discriminating means. 7. The chord dictionary device according to claim 3, further comprising a chord pronouncing unit. 8. The chord component sound display means displays the component sound corresponding to the root of the chord to be displayed separately from the constituent sounds other than the root. The code dictionary device according to claim 1.