JPH0659676A - Automatic accompaniment device - Google Patents

Abstract

PURPOSE:To provide an automatic accompaniment device capable of easily inputting a code advancing data which can be musically smoothly heard without musical knowledge concerning code advance. CONSTITUTION:A pattern generation part 3 outputs a basic accompaniment pattern to a pattern variation part 4 synchronously with a tempo clock from a tempo clock generator 2. In the meantime, a code advance input part 5 has six pieces of switches I-VI, and constantly main sound is assigned to the switch I, and a relational tune of the main sound is assigned to the relational switches II-VI. When switch operation is carried out, a code advance processing part 6 reads out a route name and code name data corresponding to a code assigned to the input switches I-VI from a conversion table ROM 7 and outputs it to a pattern variation part 4 and assigns the input switches I-VI to the main sound switch I as next main sound and the relational tune of the main sound to relational tune switches I-VI. The pattern variation part 4 varies the basic accompaniment pattern from the pattern generation part 3 by the route name and code name data from the code advance processing part 6 and outputs it.

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,
More specifically, the present invention relates to an automatic accompaniment apparatus that allows a performer who has no musical knowledge to code an accompaniment sound to be played.

[0002]

2. Description of the Related Art In a conventional automatic accompaniment apparatus, a basic accompaniment pattern such as C major is stored in a memory for a length of about two measures in advance, and this accompaniment pattern is played at a speed based on a tempo clock. read out. The read accompaniment pattern is scale-converted based on the input chord and output as an accompaniment sound. The chord input is usually performed by the player using the keyboard to specify the root and chord type by the so-called fingered method or single finger method.

[0003]

However, in such a conventional automatic accompaniment apparatus, it is still difficult for a beginner to perform automatic accompaniment because it is an improvement that simply simplifies the input method of chord input. There was a problem.

That is, when performing automatic accompaniment using the automatic accompaniment apparatus, the most difficult thing for a beginner to understand is what kind of chord and in what order. More specifically, the accompaniment is heard smoothly as the chord progression progresses along the relational key (intimate tone), and if the chord progression is not performed along this relational tone, the musical accompaniment is unnatural. It may be a performance. For example, if the relational tone is C (I),
m (IIm), Em (IIIm), F (IV), G (V), Am
If there is (VIm) and you're on any of this chords, it sounds like a smooth accompaniment. If the chord progresses according to such a relational tone, even if it transposes, it sounds smooth. However, it is difficult for a beginner who has little musical knowledge to proceed with a chord that follows a certain rule, and it is a difficult problem for a beginner to perform automatic accompaniment.

It is therefore an object of the present invention to provide an automatic accompaniment apparatus which allows easy input of chord progression data that can be heard musically smoothly even without musical knowledge of chord progression.

[0006]

According to the present invention, the above object is to provide a pattern storage means for storing an accompaniment pattern, a reading means for sequentially reading out the accompaniment patterns stored in the pattern storage means, and a main tone of a song. A tonic input means for inputting a chord progression, a chord progression input means for inputting a chord progression, and a root name and a chord name to be advanced next based on the tonic from the tonic input means and the chord progression data from the chord progression input means. The calculation result is allocated to the tonic input means and the chord progression input means, respectively, and the tones and chord progression input means are selected based on the tones from the tonic input means and the chord progression data from the previous chord progression input means. Based on the assigned root name and chord name, the root name and chord name corresponding to the tonic and chord progression data input this time are output. Chord progression processing means, changing means for changing the accompaniment pattern read by the reading means based on the chord name and the root name calculated by the chord progression processing means, and the accompaniment pattern changed by the changing means. And an accompaniment sound generation instructing means for instructing the generation of an accompaniment sound based on the above.

In this case, for example, as described in claim 1, the pattern storage means stores a plurality of types of accompaniment patterns, and the reading means reads out the accompaniment patterns from the pattern storage means. One of a plurality of types of accompaniment patterns stored in the pattern storage means according to the counting output of the counting means, the counting means for counting the on / off time of the designating means Selection means for selecting.

Further, for example, as described in claim 3, the chord progression input means has a measuring means for measuring the on / off time thereof, and the chord progression processing means,
A route name and a chord name to be advanced next may be calculated based on the output of the measuring means and assigned to the tonic input means and the chord progression input means.

[0009]

According to the above construction, the reading means reads the accompaniment pattern from the pattern storage means for storing the accompaniment pattern, and inputs the tonic of the tune from the tonic input means and the chord progression from the chord progression input means. Then, the chord progression processing means calculates a route name and a chord name to be next progressed based on the tonic from the tonic input means and the chord progression data from the chord progression input means, and the calculation result is calculated by the tonic input means and the chord input means. Based on the root name and the chord name assigned to the tonic input means and the chord progression input means, respectively, based on the tonic from the tonic input means and the chord progression data from the chord progression input means of the previous time. The root name and chord name corresponding to the tonic and chord progression data input this time are output. The changing means changes the accompaniment pattern read by the reading means based on the chord name and the root name output from the chord progression processing means, and based on the changed accompaniment pattern,
The accompaniment sound generation instruction means instructs generation of an accompaniment sound.

Therefore, when the main tone input means or the chord progression input means is operated, the route name and the chord name to be advanced next can be assigned to the main tone input means and the chord progression input means in accordance with the input operation. Even if there is no musical knowledge about the chord progression, the chord progression data that sounds musically smooth can be easily input only by performing the input operation of the tonic input means or the chord progression input means.

In this case, various accompaniment variations can be obtained by storing a plurality of types of accompaniment patterns in the pattern storage means and appropriately selecting the plurality of types of accompaniment patterns.

Further, if the chord name and the root name designated by the chord progression processing means are changed by changing the operation method of the chord progression input means, various chords can be designated. You can perform various accompaniment performances.

[0013]

Embodiments of the automatic accompaniment apparatus of the present invention will be described below with reference to the drawings.

1 to 5 are views showing a first embodiment of an automatic accompaniment apparatus, FIG. 1 is a block diagram of the automatic accompaniment apparatus, and FIG. 2 is an external view of the chord progression input section of FIG. 3 is a circuit configuration diagram of the chord progression processing unit of FIG. 1, FIG. 4 is a circuit configuration diagram of the pattern changing unit of FIG. 1, and FIG. 5 is a conversion table R of FIG.
It is a memory map which shows an example of the chord progression conversion table stored in OM.

In FIG. 1, the automatic accompaniment apparatus 1 includes a tempo clock generator 2, a pattern generating section 3, a pattern changing section 4, a chord progression input section 5, a chord progression processing section 6, and a conversion table ROM (Read Only Memory) 7. And so on.

The tempo clock generator 2 generates a predetermined tempo clock and outputs it to the pattern generator 3.

The pattern generating section 3 stores automatic performance data of a basic accompaniment pattern, for example, an accompaniment pattern of C major for one to four measures, and every time the tempo clock is input from the tempo clock generator 2. Then, the automatic performance data of the accompaniment pattern is output to the pattern changing unit 4.
The performance data of the accompaniment pattern is, for example, one octave expressed by note codes 0 to 11, and corresponds to a note of 12 equal temperament in a one-to-one correspondence.

Therefore, the tempo clock generator 2 and the pattern generator 3 function as pattern storage means for storing accompaniment patterns and reading means for sequentially reading out the stored accompaniment patterns.

On the other hand, the chord progression input section (toner input means,
As shown in FIG. 2, the chord progression input means 5 is arranged vertically 2
The switch is composed of 6 switches from switch I to switch VI arranged side by side. Switch I is the main tone (main tone) switch of the chord, and switch II to VI is the relational tone (intimate tone). Assigned to the switch. The operation of each switch is detected by a key matrix having three vertical lines and two horizontal lines, and outputs a 4-bit switch code assigned to each switch I to VI to the chord progression processing unit 6. Of the 4-bit switch code, the 0th bit and the 1st bit are the vertical key matrix code of the switch, the 2nd bit is the horizontal key matrix code of the switch, the 3rd bit is the main tone switch and others. Indicates the code that is pressed simultaneously with the switch. Then, the major switches of the relational key codes are assigned to the switches in the row in which the main tone switch I is located, that is, the switches IV and V, and the switches in the row in which the main tone switch I is not located, that is, the switch II,
Minor chords among the relational chords are assigned to the switches III and VI. The codes are assigned to the respective switches I to VI by the chord progression processing unit 6 setting the addresses of the conversion table ROM 7 as described later.

The chord progression processor 6 includes a key register 11,
A write control register 12 and adders 13 and 14 are provided. The vertical key matrix code from the chord progression input unit 5 is input to the adder 13 of the chord progression processing unit 6, and the simultaneous pressing code from the chord progression input unit 5 is input to the write control register 12. It The horizontal key matrix code from the chord progression input unit 5 is input to the conversion table ROM 7 via the chord progression processing unit 6 and is output as it is to the pattern changing unit 4 as chord name data. 2-bit display “−1” is further input to the adder 13, and the adder 13
"-1" is added to the vertical key matrix code, and the addition result is output to the adder 14 as 4-bit data. Here, "-1" is added to the vertical key matrix code by the adder 13 with respect to each chord arrangement of the chord progression conversion table of the conversion table ROM 7 with the tonic switch I of the chord progression input unit 5 as the center. This is for arranging the addresses of the relational tones on the other relational tone switches II to VI with the address of the tonic being the center.

To the adder 14, 4-bit main tone (main tone) data is further input from the key register 11, and the adder 1
Reference numeral 4 adds the addition result from the adder 13 and the tonic data from the key register 11, outputs the addition result as an address to the conversion table ROM 7, and feeds it back to the key register 11. The adjustment register 11 receives the write signal from the write control register 12 only when
When the addition result from the adder 14 is fetched and output as the tonal data to the adder 14, and when the write signal is not input from the writing control register 12, the tonal data previously fetched is held and output to the adder 14. To do. When the chord progression input unit 5 inputs a switch code of "1" indicating that the main tone switch I and the other related key switches II to VI are simultaneously pressed from the chord progression input section 5, the write control register 12 receives a key code. A write signal is output to the register 11. Then, the adder 14 converts the addition result into a conversion table RO.
Output as an address to M7, but this conversion table R
The lateral key matrix code from the chord progression input unit 5 is input to the OM 7 as an address, and the conversion table ROM 7 stores a chord progression conversion table as shown in FIG. This chord progression conversion table is
As shown in FIG. 4, the conversion table ROM 7 is divided into major and minor chords and stored.
Addresses 16 to 2 are placed at address positions where major relationship key codes are adjacent to addresses 0 to 12 and 15, respectively.
Minor relational key codes 8 and 31 are stored in adjacent address positions. Therefore, by adding a predetermined address to the address of the major code or subtracting the predetermined address from the minor address, the relationship key code of each major code or minor code is stored adjacently in the conversion table ROM 7. .

In the conversion table ROM 7, the horizontal key matrix code from the chord progression input unit 5 designates the addresses for classifying the major and minor, and the adder 1
The addition result from 4 designates a specific address in the major and minor. The conversion table ROM 7 outputs the addressed route name data to the pattern changing unit 4.

As shown in FIG. 5, the pattern changing section 4 (changing means, accompaniment sound generation instruction means) comprises a comparator 21, an AND circuit 22, a selector 23, an adder 24, etc., and the pattern changing section 4 Changes the performance data of the accompaniment pattern input from the pattern generation section 3 with the root name data and the chord name data from the chord progression section 6.

That is, the pattern changing section 4 includes a pattern generating section 3 shown in FIG.
The performance data of the accompaniment pattern from is input as described above, and this performance data is expressed by a note code of 1 octave from 0 to 11 as described above.
It corresponds to. That is, “C” corresponds to “0” and “B” corresponds to “11”. The AND circuit 22 of the pattern changing section 4 receives the chord name data from the chord progression processing section 6, and the adder 24 thereof receives the root name data from the chord progression processing section 6.

Further, "4" is input to the comparator 21, and the comparator 21 compares the performance data of the accompaniment pattern with "4", and the performance data of the accompaniment pattern is "4". When they match, “1” is output to the AND circuit 22, and when they do not match, “0” is output to the AND circuit 22. The AND circuit 22 outputs the chord name data input from the chord progression processing unit 6 to the selector 23 when “1” is input from the comparator 21. That is, the chord name data is "0" when the chord name is major, "1" when the chord name is minor, and the performance data is "4".
At this time, if a minor is input in the chord progression input unit 5, this minor code is input to the selector 23.

In the selector 23, the performance data of the accompaniment pattern is input to its A terminal and "3" is input to its B terminal. When “0” is input from the AND circuit 22, the selector 23 outputs the data input to the A terminal to the adder 24, and when “1” is input from the AND circuit 22, the data is input to the B terminal. And outputs the data to the adder 24. That is, the selector 23 always outputs the performance data of the accompaniment pattern to the adder 24 when the performance data of the accompaniment pattern is not "4", and the chord name data is major when the performance data of the accompaniment pattern is "4". If so, the performance data of the accompaniment pattern is output to the adder 24 if the chord name data is minor.

The adder 24 adds the root name data input from the chord progression processing unit 6 to the data input from the selector 23, and outputs it to the sound source etc. as key code No., ie, musical tone information designating a scale frequency. To do.

That is, the pattern changing section 4 receives the performance data of the accompaniment pattern output from the pattern generating section 3 by the chord progression processing section 6 and converts it based on the chord progression conversion table. Change based on the data and output as the key code No.
Instruct pronunciation.

Next, the operation will be described.

In the automatic accompaniment apparatus 1, in synchronization with the tempo clock from the tempo clock generator 2, the pattern generating section 3 outputs the performance data of the accompaniment pattern of C major, which is a basic accompaniment pattern, to the pattern changing section 4.

On the other hand, in the chord progression input section 5, in the initial state, when the chord progression processing section 6 designates the address of the change table ROM 7 as the head address, C major is assigned to the main note switch I, and the relational tone switch II-VI are assigned the C major relationship. That is, in the chord progression processing unit 6, “0” is set in the key register 11 in the initial state, and the address 0 (see FIG. 4) of the change table ROM 7 is set.

In this state, when the performer operates the switch of the chord progression input section 5 before changing the bar, the switch chord is input from the chord progression input section 5 to the chord progression processing section 6, and the chord progression processing section 6 is entered. Reference numeral 6 reads out root name data and code name data corresponding to the codes assigned to the switches I to VI that are turned on from the conversion table ROM 7 and outputs them to the pattern changing unit 4. Further, the chord progression processing unit 6 assigns the thrown switches I to VI as the next tones to the tonic switch I and assigns the relational tone of the tones to the relational tone switches II to VI.

That is, a switch code of 4 bits is assigned to each of the switches I to VI, the main tone switch I is set to "0", and the main tone shown in FIG. The relative address value and the minor address value of the adjacent major chords are set.
This relative address value is designated by the 0th to 2nd bits of the 4-bit switch code, and the 3rd bit is used as a simultaneous pressing code of the tonic switch I and the other relational tone switches II to VI. This simultaneous pressing chord is the relational tone switches II to V pressed simultaneously with the main tone switch I.
This means that the tonic is transposed to the relational key assigned to I.

Therefore, the chord progression processor 6 stores the address of the tonic in the key register 11 as shown in FIG.
By adding a value obtained by adding "-1" from the values of the 0th bit and the 1st bit of the switch code from the chord progression input unit 5 to the address of this tonic by the adder 14, Add relative address values. Then, the address value of the conversion table ROM 7 is determined by determining whether the address value is a major address or a minor address according to the second bit data of the switch code. The route name data and the code name data designated by this address are output to the pattern changing unit 4. In addition, the chord progression processing unit 6 receives the simultaneous pressing chord,
The write control register 12 sends a write signal to the adjustment register 11
When the write signal is input, the key register 11 holds the addition result of the adder 14 to set the address of the chord corresponding to the simultaneously pressed relational key switches II to VI as the tonic address. It will be held and transposed.

Therefore, the tones of the chord progression input section 5 are always assigned to the switch I, and the relational tones of the tones are assigned to the relational switches II to VI. As a result, even if the performer has no musical knowledge about the chord progression in the accompaniment, he or she turns on the switches I to VI of the chord progression input unit 5 to perform chord input suitable for a smooth chord progression. be able to.

Then, the pattern changing section 4 changes the performance data of the basic accompaniment pattern inputted from the pattern generating section 3 by the root name data and the chord name data inputted from the chord progression processing section 6, and the changed performance. Outputs data and makes the accompaniment sound sound.

That is, the pattern changing section 4 includes the comparator 2
1, the AND circuit 22 and the selector 23 output the C major performance data input from the pattern generation unit 3 to the adder 24 as it is according to the chord name data input from the chord progression processing unit 6. Or
Select whether to output as a minor and select this selector 23
The pitch of the data input from (1) is changed according to the route name data input from the chord progression processing unit 6, and the data is output.

As described above, the chord progression input unit 5
The tones and the relational tones of the tones are always assigned to the switches I to VI. As a result, even if the performer has no musical knowledge about the chord progression in the accompaniment, he / she can turn on the switches I to VI of the chord progression input section 5,
It is possible to input a chord suitable for a musically smooth chord progression and improve the usability of the automatic accompaniment apparatus.

In the above embodiment, the chord progression input section 5 is constructed as shown in FIG. 2, but the invention is not limited to this. For example, as shown in FIG. , And the relational tone switches II to VI may be arranged around the tonic switch I so as to surround the tonic switch I.

FIGS. 7 to 11 are views showing a second embodiment of the automatic accompaniment apparatus, FIG. 7 is a block diagram of the essential parts of the automatic accompaniment apparatus, and FIG. 8 is an external view of the genre switch section of FIG. 9 is a circuit configuration diagram of the genre processing unit, FIG. 10 is an operation explanatory diagram showing the relationship between the click pulse signal and the output of FIG. 9, and FIG.
FIG. 6 is a diagram showing a correspondence relationship between a click method of a genre switch section and genres.

This embodiment is a variation of the accompaniment pattern generation of the first embodiment, and the same components as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted. At the same time, a part of the configuration diagram is omitted.

In FIG. 7, the automatic accompaniment apparatus 30 comprises a tempo clock generator 2, a pattern generator 31, a genre processing section 32, a genre switch section 33, etc., and the pattern generation section 31 shows the performance data of the accompaniment pattern. 1 to the pattern changing unit 4 shown in FIG.

The pattern generation section 31 stores 1 to 4 bars of automatic performance data of a basic accompaniment pattern (for example, an accompaniment pattern of C major) for each genre, and the genre from the genre processing section 32. The plurality of genres are selected according to the designated data and output every time the tempo clock is input from the tempo clock generator 2. There are four types of genres: intro, long intro, normal start and counter start when automatic performance is stopped, and four types of fill-in, break, ending and long ending during automatic performance.

As shown in FIG. 8, the genre switch unit 33 includes one genre switch 34, and outputs a click pulse signal according to the click method of the genre switch 34 to the genre processing unit 32. The genre switch section 33 has four types of click methods, click-on, log-on, double-click-on, and click-long-on, as will be described later, corresponding to the number of genres during the automatic performance stop and during the automatic performance. There is.

As shown in FIG. 9, the genre processing section 32 includes a flip-flop 41, a one-shot multivibrator (hereinafter referred to as one-shot) 42 and a latch 43, and a click pulse signal from the genre switch section 33. Is input to each of the flip-flop 41, the one-shot 42 and the latch 43.

The one-shot 42 rises in synchronization with the click pulse signal, generates a pulse for a fixed time (to), and outputs it to the clear input of the flip-flop 41 and the clock input of the latch 43.

Then, depending on the click method of the genre switch 34, as shown in FIG. 10, click pulse signals having different on-pulses within one pulse of the one-shot 42 are input. The genre processing unit 32 receives a click-on signal as a click pulse signal,
Since the flip-flop 41 does not invert and the click pulse signal at the fall of the one-shot 42 is "0", the latch 43 outputs "0" from both the A output and the B output, and the click pulse signal is output. When the double click-on signal is input, the flip-flop 41 is inverted, and the click pulse signal at the falling edge of the one-shot 42 is "0".
The output and the B output of "1" are output. Further, when the long-on is input as the click pulse signal, the genre processing unit 32 does not invert the flip-flop 41 and the click pulse signal at the falling edge of the one-shot 42 is “1”. Outputs A output of "1" and B output of "0", and as a click pulse signal,
When click-long-on is input, the flip-flop 42 is inverted, and the clock pulse signal at the falling edge of the one-shot 42 is "1".
"1" is output from both the output and the B output. That is, the genre processing unit 32 responds to the clicking method of the genre switch unit 33 by setting the genre designation data from the latch 43 to (0, 0) when the click is on.
Is output to the pattern generating unit 31 when long-on, (0,1), when double-click-on, (1,0), and when click-long-on, (1,1).

The pattern generation section 31 selects an automatic performance pattern according to the genre designation data from the genre processing section 32 and whether the automatic performance is stopped or automatically performed, and the pattern change section 4 shown in FIG. The performance data of is output.

That is, as described above, the pattern generating section 31 in this embodiment uses 1 to 4 bars of the automatic performance data of the basic accompaniment pattern of the C major as an intro, The four types of long intro, normal start, and counter start are stored during automatic performance, and four types of fill-in, break, ending, and long ending are stored.
The plurality of genres are selected according to the genre designation data from 2, and output every time the tempo clock is input from the tempo clock generator 2. Pattern generator 31
Performs this genre selection as shown in FIG. 11, for example.

That is, when the pattern generation section 31 is clicked on by the genre switch section 33 and (0, 0) is input as the genre designating data, it is during the automatic performance of the intro that the automatic performance is stopped. If the ending is selected, the genre switch section 33 is long-on-operated, and when (0, 1) is input as the genre designating data, it means that the automatic performance is stopped. If there is, select a break. Also,
When the pattern generation section 31 is double-clicked on by the genre switch section 33 and (1, 0) is input as genre designation data, it means that the automatic performance is stopped.
When the normal start is being automatically played, the fill-in is selected, and when the genre switch section 33 is click-and-on-operated and (1, 1) is input as the genre designating data, it means that the automatic performance is stopped. , Count start, and the coder is selected when the automatic performance is in progress.

The pattern generating section 31 stores the performance data of the basic accompaniment pattern for each genre thus selected,
Output to the pattern changing unit 4 of FIG.
In the same manner as in the first embodiment, changes the accompaniment pattern according to the input operation of the chord progression input section and outputs it.

Next, the operation will be described.

The pattern generating section 31 outputs the performance data of the basic accompaniment pattern to the pattern changing section 4 in synchronization with the tempo clock input from the tempo clock generator 2. At this time, the pattern generation section 31 stores the automatic performance data of the basic C major accompaniment pattern for a plurality of genres, and the genre designation data from the genre processing section 32 and whether the automatic performance is stopped or the automatic performance is being performed. Thus, one is selected from the plurality of genres and is output to the pattern changing unit 4. Then, the genre is designated by changing the click method of the genre switch 34 of the genre switch unit 33.

Therefore, a plurality of types of accompaniment patterns can be appropriately selected by clicking the genre switch section 33, and various accompaniment variations can be obtained.

In the above embodiment, the genre is designated by the genre switch 34 of the genre switch unit 33.
However, it is needless to say that the genre switch section 33 may be provided with a switch for each genre.

12 to 16 are views showing a third embodiment of the automatic accompaniment apparatus. FIG. 12 is a block diagram of the automatic accompaniment apparatus. FIG. 13 is a circuit diagram of the switch processing section of FIG. 14 is a circuit configuration diagram of the chord progression processor of FIG.
FIG. 15 is a diagram showing the relationship between the code stored in the conversion table ROM of FIG. 12 and the switch code, and FIG.
FIG. 3 is a circuit configuration diagram of a main part of a pattern generator and a pattern changer of FIG.

In the present embodiment, various accompaniment chords can be designated. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

In FIG. 12, the automatic accompaniment apparatus 50 includes a tempo clock generator 2, a pattern generator 51, a pattern changing section 52, a conversion table ROM 53, a chord progression processing section 54, a switch processing section 55 and a chord progression processing section 5. The tempo clock generator 2 and the chord progression input section 5 are the same as those in the first embodiment.

The switch processing section 55 is constructed as shown in FIG. 13 and comprises a selector 61, a latch 62, a flip-flop 63, a one-shot 64 and a multiplexer 65.

The switch code similar to that of the first embodiment is inputted from the chord progression input section 5 to the selector 61 and the multiplexer 65, and which of the switches I to VI of the chord progression input section 5 is turned on in the multiplexer 65. And outputs the input key code indicating the input key and the simultaneous pressing code to the chord progression processing unit 54, and
The input key code is output to the selector 61. Selector 6
1 selects the corresponding switch code based on the input key code from the multiplexer 65 and outputs it to the latch 62, flip-flop 63 and one-shot 64.

These latch 62 and flip-flop 63
The one-shot 64 has the same configuration as that of the genre processing unit 32 of the second embodiment.
The switch code is turned on / off within one pulse of, ie, click, double click, long and long click, from the latch 62 to the genre processing unit 32.
The same A output and B output are output. The switch processing unit 55 combines the outputs A and B of the latch 62 and the input key code of the multiplexer 65 and outputs them as a key code to the chord progression processing unit 54.
The simultaneous pressing code is output to the chord progression processing unit 54.

The chord progression processor 54 is constructed as shown in FIG. 14, and has an adder 71 and a tonic register 72.
Is equipped with.

As shown in FIG. 15, the conversion table ROM 53 stores more code data than in the first embodiment, and each code data is a switch code and an A code.
It is assigned corresponding to the contents of the key code composed of output and output B. Then, this key code is used as an address of the conversion table ROM 53, and the switch processing unit 5
5, the conversion table ROM 53 outputs the chord name data and the major / minor data to the pattern changing unit 52 and the pattern generating unit 51 in accordance with the address designation.
The temporary route name data is output to the adder 71.

In addition to the temporary route name data, route name data held by the main tone register 72 is input to the adder 71. The adder 71 uses the temporary route name data from the conversion table ROM 53 and the main tone register 72. The route name data from is added and output as route name data to the pattern changing unit 52 and the pattern generating unit 51.
Feedback is provided to the tonic register 72.

The main tone register 72 has the simultaneous pressing code input from the switch processing section 55, and the main tone register 72 has the route name input from the adder 71 only when the simultaneous pressing code "1" is input. The data is held and output to the adder 71. Therefore, only when the simultaneous pressing code is input, the relationship is changed such that the root name is simultaneously pressed.

That is, the chord progression processing section 54 outputs the chord name data and the major / minor data of the address designated by the key code to the pattern generating section 51, and also outputs the root name data to the pattern changing section 52. Therefore, in the present embodiment as well, a 4-bit switch code is assigned to each of the switches I to VI of the chord progression processing unit 5, the tonic switch I is set to "0", and the other tone keys II to VI are set to the same. A relational tone centered on the tonic is assigned. As a result, the performer may have no musical knowledge of the chord progression in the accompaniment,
By turning on the switches I to VI of the chord progression input section 5, it is possible to perform chord input suitable for musically smooth chord progression.

FIG. 16 is a diagram showing a part of the pattern generating section 51 and the pattern changing section 52.
Includes a pattern ROM 81.

The pattern ROM 81 stores a plurality of accompaniment patterns for each major and minor. For example, for 6th, 7th, aug7, etc., the scale chord of the equal temperament is stored for each major and minor. The pattern ROM 81 stores chord name data from the chord progression processor 54 and major / major data.
Minor data is input as an address, and the pattern generation unit 51 outputs the accompaniment pattern addressed to the adder 82 of the pattern change unit 52 every time the tempo clock is input from the tempo clock generator 2.

The adder 82 of the pattern changing unit 52 receives the root name data from the chord progression processing unit 54 in addition to the accompaniment pattern from the pattern generating unit 51, and the adder 82 uses the pattern generating unit 51. The root name data from the chord progression processing unit 54 is added to the accompaniment pattern from and is output to a sound source or the like as key code No., that is, musical tone information designating a scale frequency.

That is, the pattern changing section 52 changes the performance data of the accompaniment pattern output from the pattern generating section 51 based on the route name data from the chord progression processing section 54, and outputs it as a key code No. Instruct pronunciation.

Next, the operation will be described.

In the present embodiment, each switch I to VI is
By not only turning on the switch, but also changing the click method of each of the switches I to VI, it is possible to perform accompaniment by selecting accompaniment patterns of the number of switches I to VI or more.

That is, when the switches I to VI of the chord progression processing section 5 are clicked, double-clicked, long-clicked or click-longed, the switch processing section 5 is operated.
5 outputs the data indicating the click operation and the switches I to VI that have been turned on to the chord progression processing section 54 as a key code and a simultaneous pressing code, and the chord progression processing section 54 addresses the conversion table ROM 53 by this key code. Then, the corresponding code name data and major / minor data are read from the conversion table ROM 53, and the code name data and major / minor data are output to the pattern generating section 51. Also, the chord progression processor 54
Calculates the route name data by adding the temporary route name data read from the conversion table ROM 53 according to the key code from the switch processing unit 55 and the route name data held in the main tone register 72 based on the simultaneous pressing code. ,
The calculated route name data is output to the pattern changing unit 52.

The pattern generator 51 reads the corresponding accompaniment pattern from the pattern ROM 81 based on the chord name data and the major / minor data input from the chord progression processor 54, and the tempo clock generator 2
It is output to the pattern changing unit 52 in synchronization with the tempo clock input from. The pattern changing unit 52 adds the root name data input from the chord progression processing unit 54 to the accompaniment pattern input from the pattern generating unit 51 by the adder 82 to specify the key code No., that is, the scale frequency. It is output to a sound source or the like as musical tone information.

Therefore, by changing the operation method of the chord progression input unit 5, it is possible to change the chord names and the root names that specify more accompaniment patterns stored in the conversion table ROM 53, and specify various chords. can do. As a result, a more diverse accompaniment performance can be performed.

[0076]

According to the present invention, when the main tone inputting means or the chord progression inputting means is operated, the route name and the chord name to be next proceeded in response to the inputting operation, the main tone inputting means and the chord progression inputting means. The chord progression data which can be heard musically smoothly can be easily input only by performing the input operation of the tonic input means and the chord progression input means, even if there is no musical knowledge about the chord progression.

Further, a plurality of types of accompaniment patterns are stored,
Various accompaniment variations can be obtained by appropriately selecting a plurality of types of accompaniment patterns.

Further, by changing the operation method of the chord progression input means, it is possible to change the chord name and the root name designated by the chord progression processing means, and to designate various chords, so that various accompaniment performances can be performed. Can be done.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of a first embodiment of an automatic accompaniment apparatus according to the present invention.

FIG. 2 is an external view of the chord progression input unit of FIG.

FIG. 3 is a circuit configuration diagram of a chord progression processing unit in FIG.

FIG. 4 is a circuit configuration diagram of a pattern changing unit in FIG.

5 is a memory map showing an example of a chord progression table stored in the conversion table ROM of FIG.

FIG. 6 is an external view of another example of the chord progression input unit.

FIG. 7 is a block diagram of essential parts of a second embodiment of an automatic accompaniment apparatus.

8 is an external view of the genre switch unit of FIG.

9 is a circuit configuration diagram of a genre processing unit in FIG. 7.

FIG. 10 is an operation explanatory view showing the relationship between the input click pulse signal and the output of the genre processing unit in FIG.

FIG. 11 is a diagram showing a correspondence relationship between a click method of a genre switch section and genres.

FIG. 12 is a block configuration diagram of a third embodiment of an automatic accompaniment apparatus.

13 is a circuit configuration diagram of the switch processing unit of FIG.

14 is a circuit configuration diagram of the chord progression processor of FIG.

FIG. 15 is a diagram showing the relationship between codes stored in the conversion table ROM of FIG. 12 and switch codes.

16 is a circuit configuration diagram of a main part of a pattern generation unit and a pattern change unit in FIG.

[Explanation of symbols]

 1 Automatic Accompaniment Device 2 Tempo Clock Generator 3 Pattern Generation Unit 4 Pattern Change Unit 5 Chord Progression Input Unit 6 Chord Progression Processing Unit 7 Conversion Table ROM 11 Key Register 12 Write Control Register 13, 14 Adder 21 Comparator 22 AND Circuit 23 Selector 24 Adder

Claims (3)

[Claims] 1. A pattern storage unit for storing an accompaniment pattern, a reading unit for sequentially reading out the accompaniment patterns stored in the pattern storage unit, a tonic input unit for inputting a tonic of a song, and a chord for inputting chord progression. Based on the progress input means, the tonic from the tonic input means and the chord progression data from the chord progression input means, a route name and a chord name to be proceeded to next are calculated, and the calculation result is the tonic input means and the chord progression input. It is assigned to each means, and is input this time based on the root name and the chord name assigned to the tonic input means and the chord progression input means based on the tonic from the tonic input means and the chord progression data from the chord progression input means of the previous time. Chord progression processing means for outputting a root name and a chord name corresponding to a tonic and chord progression data; Changing means for changing the accompaniment pattern read by the reading means based on the chord name and route name output from the processing means, and instructing generation of an accompaniment sound based on the accompaniment pattern changed by the changing means. An automatic accompaniment apparatus comprising: accompaniment sound generation instruction means. 2. The pattern storage means stores a plurality of types of accompaniment patterns, and the reading means specifies a start of reading of the accompaniment pattern from the pattern storage means, and the specification means is turned on. A counting means for counting the on / off time, and a selecting means for selecting one of a plurality of types of accompaniment patterns stored in the pattern storage means according to the count output of the counting means. The automatic accompaniment apparatus according to claim 1. 3. The chord progression input means is turned on / off.
The chord progression processing means has a measuring means for measuring an off-time, and the chord progression processing means calculates a route name and a chord name to proceed to next based on the output of the measuring means, and the tonic input means and the chord progression input means. The automatic accompaniment apparatus according to claim 1 or 2, wherein the automatic accompaniment apparatus is assigned to each.