JPH08328557A - Display device of automatic player - Google Patents

Abstract

PURPOSE: To provide the display device of an automatic player in which code names are displayed with good visibility while automatically conducting a playing and the changes in the codes are easily and clearly recognized. CONSTITUTION: The player automatically conducts a playing based on the automatic playing data which generate automatic playing sounds and the code progress data which include plural code names in accordance with a code progress. The player is provided with a detecting means 10 which detects the changes in codes, a display 14 which has n display areas (where n is a positive integer and is greater than 2) to display code names, a plainly specifying means 143 which plainly specifies any one of the display areas of the display 14 and a control means 10 which successively moves the plainly specified area by the means 143 to another display area whenever a code change is detected by the means 10 and displays a next code name contained in the code progress data in the display region in that a code name has been plainly displayed by the means 143 immediately before.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device applied to an automatic performance device for automatically performing a performance while displaying a chord name.

[0002]

2. Description of the Related Art Conventionally, there is known an automatic performance device which automatically performs a performance in accordance with a predetermined performance pattern and chord progression. The automatic performance sound generated by the automatic performance device is composed of musical sounds of each part such as a chord, a bass and a drum. The player can play another musical instrument in accordance with the automatic performance sound generated by the automatic performance device. Also, by connecting a keyboard to the present automatic performance device, the player can use the keyboard to play, for example, a melody in accordance with the automatic performance sound.

By the way, in such an automatic performance device, in order to assist the performance of the performer, the name of the chord currently being sounded (hereinafter referred to as "current chord name") and the next sound should be pronounced. The code name (hereinafter referred to as "next code name") is displayed on the display. The current chord name and the next chord name displayed on the display unit are, for example, composed of chord roots and chord types, respectively. The current chord name and the next chord name displayed on this display are sequentially changed as the automatic performance progresses. The player can play a melody or perform ad lib while watching this chord name.

The display unit, for example, as shown in FIG. 5A, present code area 140 for displaying the present code name.
(The left half in FIG. 5) and the next code area 142 (the right half in FIG. 5) that displays the next code name are included. Then, each time the code changes, the next code name displayed in the next code area 142 moves to the current code area 141, and a new next code name is displayed in the next code area 142. For example, in an automatic performance tune having a chord progression of Am → B7 → Gm → F → ..., the display contents of the display are as shown in FIG. 4 (A) → (B) → The figure changes from (C) to ...

[0005]

In the conventional display, as described above, the current code name displayed in the current code area 141 and the next code area 142 are displayed each time the code changes. The following code names and are changed at the same time. Therefore, the time in which one chord name is displayed in each chord area is short and it is difficult for the performer to recognize the chord name. In particular, in the case of an automatic performance tune in which chords change one after another at short time intervals, the performer's eyes move frequently, resulting in poor visibility.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a display device of an automatic musical instrument having high visibility, which enables easy and clear recognition of a change in chord. And

[0007]

In order to achieve the above-mentioned object, a display device of an automatic performance device according to the present invention has an automatic performance data for generating an automatic performance sound and a plurality of chord names according to chord progressions. An automatic playing device for automatically playing a chord according to included chord progression data, wherein the detecting means detects chord changes and n display areas for displaying chord names (where n is a positive integer of 2 or more). And a display unit for clearly displaying any one display area of the display unit, and each time a code change is detected by the detection unit, the display by the display unit is sequentially moved to another display region, And a control means for displaying the next chord name included in the chord progression data in the display area that has been clarified until immediately before by the clarification means.

The automatic performance device to which the present display device is applied is
It has automatic performance data and chord progression data. The automatic performance data is composed of data of each part such as chord, bass, melody, and drum. Of these, the chord, bass, and melody parts change as the chord progresses. However, in order to simplify the explanation, the case where the chord part is automatically played will be described below.

The automatic performance data of the chord part is composed of a plurality of note data that constitutes a chord. Each note data is composed of data for instructing the sounding timing, sounding time, sounding strength, etc. of the note. As the above code, for example, the basic type of code C (code including do, mi, and so) can be used. By pronouncing based on these note data, for example, waltz,
A rhythm sound such as 8 beats is produced.

On the other hand, the chord progression data is used to control the chord progression. This chord progression data is
For example, a chord name and step time data indicating a timing at which a chord corresponding to the chord name should be generated are paired, and a plurality of these are collected. A special code (end code) is stored at the end of the chord progression data. The code name may be a combination of the code root name and the code type name. In this automatic performance device, note data in the automatic performance data is sequentially converted into chord sounds according to the chord name designated by the chord progression, and the sound is produced. The conversion is performed at the timing designated by the chord progression data.

The detecting means may be composed of, for example, a central processing unit (hereinafter referred to as "CPU"). This detecting means can be configured to detect that there is a chord change, for example, when the timing at which the chord sound specified by the chord progression data is to be generated. Further, this detecting means may be configured to insert special data in the automatic performance data in advance and detect that there is a chord change when the special data is detected. Furthermore, a chord is detected by a well-known chord detection method based on the note data in the automatic performance data, and when the detected chord is different from the previous chord, it is detected that there is a chord change. You may. As a well-known chord detection method, for example, chords are detected by sequentially comparing whether or not a plurality of note data in the automatic performance data provided for automatic performance coincide with the chord constituent sounds prepared in the table in advance. Any method can be used. In this case, since the presence / absence of a chord change, the chord change timing, and the chord type are detected based on the automatic performance data, the chord progression data is unnecessary.

The above-mentioned display can be constructed by using, for example, an LCD display. The n display areas can be formed by dividing the display area of the LCD display into n display areas. Then, the present code name, the next code name, the next code name, ... Can be displayed in each display area. Each of the above code names can be composed of, for example, a code name in which the name of the code root of the code and the name of the code type are combined. The code name is
For example, it can be represented by alphanumeric characters or symbols. This display is a monochrome LCD display, color LC
A D display device or the like can be used. Further, in addition to the LCD display, a monochrome or color CRT display and any other display capable of displaying alphanumeric characters, symbols and the like can be used.

The specifying means can be constructed by displaying characteristic alphanumeric characters, figures, symbols, etc. on a part of the display area of the display. It can also be realized by reversing the foreground and background of the code name displayed in the display area. Further, when a color display is used, a specific display area can be clearly indicated by displaying the current code name or the above-mentioned alphanumeric characters, figures, symbols, etc. in a special color. Further, for example, an LED display device may be provided at a position corresponding to each display region of the display device, and by turning on or off the LED display device, it is possible to clearly indicate a specific display region.

The control means may be composed of, for example, a CPU. This control means, in the initial state,
For example, the configuration is such that n chord names from the beginning to the n th of chord progression data are sent to the display unit and displayed in each display area, and the display area in which the beginning chord name is displayed is specified by the indicating means. can do. When a chord change is detected in this state, the display area in which the next chord name is displayed is clarified by the clarification means, and the next data (n + 1) in the chord progression data is displayed in the clarification display area. Second chord name) can be configured to be displayed. Similarly, each time a code change is detected, the display area to be displayed is changed and
It can be configured to display the new code name in the display area that was previously specified.

[0015]

In the display device of the automatic performance device of the present invention,
Use a display device with two or more display areas to clearly indicate the display area where the current code name is displayed, and to indicate the display area where the next code name is displayed when a code change is detected. Change. The code name displayed in the newly specified display area becomes the current code name. In this case, the display area that has been clearly displayed displays the code name that should be displayed when the subsequent (n-1) th code change is detected.

Therefore, since the same code name is displayed in each display area at least until the code change is detected n times consecutively, it is possible to prevent the display content from changing in a short time. It is possible to provide a display device of an automatic performance device having excellent visibility.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a display device of an automatic performance device of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of an automatic performance device to which the display device of the present invention is applied. This automatic performance device has an address bus 20 and a data bus 2.
1, a CPU 10, a read-only memory (hereinafter referred to as "ROM") 11, a random access memory (hereinafter referred to as "RAM") 12, a display control device 13, and a sound source 15. The address bus 20 and the data bus 21 are used to send and receive various data between the above-mentioned components.

The CPU 10 controls the entire automatic performance device according to a control program stored in the ROM 11. Details of the processing performed by the CPU 10 will be described later.
The detection means and control means of the present invention are realized by this CPU 10.

The ROM 11 stores the above-mentioned control program, various fixed data used by the CPU 10 for various processes, tone color parameters for generating a tone of a predetermined tone color, and the like. A plurality of timbre parameters are provided corresponding to timbres and ranges. Each timbre parameter is composed of, for example, a waveform address, frequency data, envelope data, filter coefficient and the like.

The ROM 11 also stores automatic performance data and chord progression data. The automatic performance data is data for generating an automatic performance sound. This automatic performance data is composed of a set of unit automatic performance data for generating one note. The unit automatic performance data is composed of, for example, step time, note number (key code), gate time and velocity. The step time indicates a time (sound generation timing) at which sound generation is started. This step time is represented by the time from the beginning of the bar. The note number indicates the pitch. The gate time indicates the sounding time. Velocity indicates the strength (volume) of pronunciation. This automatic performance data is provided for each part as described above.

Further, waveform data is stored in the ROM 11. The waveform data is used to generate a waveform signal which is a basis of a musical tone signal in a sound source 15 described later. This waveform data is stored corresponding to the tone color parameter, that is, corresponding to the tone color and tone range. As the waveform data, for example, data produced by pulse code modulation (PCM) of musical instrument sound is used.

The chord progression data is used to indicate chord progression. The chord progression data is composed of a chord name and data indicating the timing at which the chord sound should be generated. The code name is a combination of the code root name and the code type name. For example, step time data is used as the data for instructing the timing at which the chord sound should be generated. The step time data in the chord progression data has the same meaning as the step time in the automatic performance data. The data representing chord constituent tones generated based on the automatic performance data and the chord progression data is converted into a tone color parameter and supplied to the tone generator 15.

The RAM 12 temporarily stores various data used by the CPU 10 for various processes. This RAM12
Various registers for controlling this automatic performance device,
Counters, flags, etc. are defined. This RAM12
Registers, counters, flags, etc. defined in 1) will be explained each time they appear below.

The tone color parameters, automatic performance data, chord progression data, etc. are replaced by the ROM 11 instead of the ROM 11.
It may be configured to be stored in the RAM 12. In this case, for example, a floppy disk device is connected to the address bus 20 and the data bus 21, and tone color parameters, automatic performance data, and chord progression data are stored in the floppy disk. The RAM 12 may be loaded from a floppy disk mounted in the device.

A display 14 is connected to the display controller 13. The display 14 is composed of, for example, an LCD display. The display 14 includes a first display area 141 and a second display area 14 as shown in FIG.
And 2. Then, the display areas 141 and 142
Is displayed with a code name (Am, B7 in the illustrated example) and an indicator 143. As the chord name, data obtained from chord progression data is used. A black circle symbol is used as the indicator 143. The indicator 143 is not limited to a black circle, and various characters, symbols, figures, etc. can be used. The code name of the display area in which the indicator 143 is present is the current code name, and the code name of the other display area is the next code name.

The display controller 13 is used to control the display on the display 14. That is, the display control device 1
Reference numeral 3 converts the display data sent from the CPU 10 into a data format that can be handled by the display device 14 and sends it to the display device 14. As a result, the code name and the indicator 143 corresponding to the display data are displayed on the display unit 14.

The sound source 15 is equipped with, for example, a plurality of oscillators and is capable of simultaneously producing a plurality of sounds. The tone generator 15 also reads waveform data from the ROM 11 based on the tone color parameters received from the CPU 10 and adds an envelope to the waveform data to generate a digital tone signal. The digital musical tone signal generated by the sound source 15 is supplied to the D / A converter 16.

The D / A converter 16 converts the digital musical tone signal into an analog musical tone signal and sends it to the amplifier 17. The amplifier 17 amplifies the analog tone signal with a predetermined amplification factor and sends it to the speaker 18. The speaker 18 is a well-known speaker that converts an analog musical tone signal into an acoustic signal. This speaker 18
Causes the automatic accompaniment sound to be emitted.

Next, regarding the operation of the embodiment of the automatic performance device to which the display device of the present invention is applied in the above-mentioned configuration,
This will be described with reference to the flowchart of FIG. The process shown in this flow chart is a process when the display 14 having two display areas is used, and mainly the CP
Performed by U10.

Before starting the automatic accompaniment, the user selects an automatic musical piece. This is done, for example, by inputting a music number from an operation panel (not shown). The song number selected here is stored in the song number register provided in the RAM 12. When the above preparation is completed, the user presses the automatic performance start switch provided on the operation panel to start the automatic performance. As a result, a step time counter (not shown) starts the count-up operation at time intervals according to the tempo. This step time counter is
It is used to manage the timing of code changes. Hereinafter, the automatic performance sound is generated by performing the processing in the procedure shown in FIG.

When the start of automatic accompaniment is instructed, first, the first chord name in the chord progression data stored in the ROM 11 is read out, and the first display area 141 is read.
Is displayed (step S10). Similarly, the second code name is read and displayed in the second display area 142 (step S11). Then, the first display area 1
An indicator 143 is displayed at 41.

Next, the automatic performance data corresponding to the music number stored in the music number register is read from the ROM 11 (step S13). Then, it is checked whether there is a code change (step S14). this is,
This is done by checking whether the step time data corresponding to the next code name matches the contents of the step time counter. When it is determined that they match, it is recognized that there is a code change, and the display position of the indicator 143 moves to the next display area (step S1).
5). The "next display area" is an area in which the next code name is displayed.

Next, the next chord name (the chord name next to the chord name currently specified by the indicator 143) is extracted from the chord progression data, and is displayed in the display area where the indicator 143 has been displayed until then. . Then, it is checked whether or not it is finished (step S1).
7). This is done depending on whether a special code (end code) is found in the chord progression data.
If it is determined that the process is finished, the automatic performance process is finished.

On the other hand, if it is determined that the process is not finished here, or if it is determined in step S14 that there is no chord change, automatic performance processing is performed (step S18). In this automatic performance processing, it is checked whether the automatic performance data read in step S13 has reached the sound generation timing, and if it is determined that the sound generation timing has come, the note data is sounded. At this time, the note data in the automatic performance data read from the ROM 11 is converted into a chord component sound corresponding to the current chord name and is sounded. Whether or not the tone generation timing has been reached is determined by checking whether or not the step time data in the unit automatic performance data corresponding to the note data matches the content of the step time counter. When this automatic performance process ends, the process returns to step S13, and the same process is repeated thereafter.

With the above-described processing, in the display device in which the display 14 having two display areas is used, for example, an automatic musical piece having a chord progression of Am → B7 → Gm → F → ... Is played. In the case of the display, the display content of the display 14 changes in the order shown in FIG. That is, in the initial state, as shown in FIG. 3A, the code name Am is displayed in the first display area 141, the code name B7 is displayed in the second display area 142, and the indicator 143 is displayed.
Is displayed in the first display area 141. In this state,
When a code change is detected, as shown in FIG.
The indicator 143 moves to the second display area 142, and the following code name Gm is displayed in the first display area 141. When a further code change is detected, FIG.
As shown in FIG.
While moving to 41, the next code name F is displayed in the second display area 142. In the same manner, each time there is a code change, the indicator 143 is moved, and a new code name is displayed in the display area where the indicator 143 was previously displayed.

As described above, according to the present embodiment, it is 1 until the code is changed at least twice from the predetermined display state.
Since the display contents of the two display areas do not change, the performer can easily recognize the chord name.

In the above embodiments, an example of the display device in which the display device 14 having two display areas is used is explained, but the same applies to the display device in which the display device 14 having three or more display areas is used. Applicable to As an example, in FIG.
An example of a display device using a display device having two display areas is shown.

In this case, for example, Am → B7 → Gm → F
In the automatic performance music having the chord progression of → Dm → C → ..., the display contents of the display 14 are changed in the order shown in FIG. That is, in the initial state, as shown in FIG. 4A, the code name Am in the first display area 141, the code name B7 in the second display area 142, and the code name B7 in the third display area 144. Gm is displayed, and the indicator 143 is displayed in the first display area 141. When a code change is detected in this state, as shown in FIG. 4B, the indicator 143 moves to the second display area 142 and the next code name F is displayed in the first display area 141. Is displayed. Next, when a code change is detected, as shown in FIG.
As shown in (C), the indicator 143 moves to the third display area 144, and the second display area 142 displays
The following code name Dm is displayed. When a further code change is detected, as shown in FIG.
3 moves to the first display area 141, and at the same time, the next code name C is displayed in the third display area 144. In the same manner, each time there is a code change, the indicator 143 is moved and a new code name is displayed in the display area where the indicator 143 was displayed.

According to this embodiment, the display contents of one display area do not change from the predetermined display state until the chord changes at least three times, so that the player can easily recognize the chord name. .

[0041]

As described in detail above, according to the present invention,
It is possible to provide a display device of an automatic musical instrument having high visibility, which enables easy and clear recognition of a change in chord.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of an automatic performance device to which a display device of the present invention is applied.

FIG. 2 is a flowchart showing the operation of the embodiment of the present invention.

FIG. 3 is a diagram for explaining the operation of the embodiment of the present invention.

FIG. 4 is a diagram for explaining the operation of another embodiment of the present invention.

FIG. 5 is a diagram for explaining the operation of a display device of a conventional automatic performance device.

[Explanation of symbols]

 10 CPU 11 ROM 12 RAM 13 Display Controller 14 Display 15 Sound Source 16 D / A Converter 17 Amplifier 18 Speaker 20 Address Bus 21 Data Bus 141 First Display Area 142 Second Display Area 143 Indicator 144 Third Display region

Claims (2)

[Claims] 1. An automatic performance device for automatically performing performance according to chord progression data containing a plurality of chord names according to chord progression and automatic performance data for generating an automatic performance sound, which is for detecting a chord change. Means, an indicator having n display areas (where n is a positive integer of 2 or more) for displaying the code name, and an indicating means for clearly indicating any one display area of the indicators, Each time the chord change is detected by the detection means, the indication by the indication means is sequentially moved to another display area, and the next code included in the chord progression data is displayed in the display area that has been indicated up to immediately before by the indication means. A display device for an automatic performance device, comprising: a control means for displaying a name. 2. The display device of the automatic musical instrument according to claim 1, wherein the n is “2”.