JP2565066B2 - Automatic accompaniment device - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

[0001] The present invention relates to an automatic accompaniment apparatus which sequentially and repeatedly reads accompaniment patterns stored in advance to automatically perform accompaniment.

[0002]

As is well known, a plurality of accompaniment patterns are stored in advance in an automatic accompaniment device for each of a plurality of accompaniment styles such as "rock", "pops" or "disco". The accompaniment pattern referred to here is composed of data representing the pitch and sounding timing of each note to be played, and each accompaniment pattern is, for example, a normal pattern representing a musical piece of a predetermined measure, An intro pattern corresponding to the introduction part of the normal pattern,
It is formed of a fill-in pattern inserted in the middle of the normal pattern, or an ending pattern added to the end of the normal pattern.

In such an automatic accompaniment apparatus, preset tempo values are stored for each accompaniment style. Therefore, when changing the accompaniment style, the accompaniment is automatically performed at a tempo suitable for the changed accompaniment style without performing the tempo designation operation each time. Of course, it is also possible to change the performance tempo of the automatic accompaniment according to the preset tempo value by performing the tempo designation operation. Further, the accompaniment style and accompaniment pattern can be arbitrarily changed even while the automatic accompaniment is being performed.

In the automatic accompaniment apparatus in which the preset tempo value is stored for each accompaniment style, normally,
When the accompaniment style is changed while the automatic accompaniment is stopped, the preset tempo value suitable for the changed accompaniment style is validated. That is, the preset tempo value is read from the internal memory when the automatic accompaniment is started, and the accompaniment is started according to the read preset tempo. In contrast,
When the accompaniment style is changed during automatic accompaniment, the preset tempo value is not read, and in this case, the tempo before the style change is maintained.

[0005]

By the way, in the above-mentioned conventional automatic accompaniment apparatus, even if the accompaniment style is changed during automatic accompaniment, the accompaniment always proceeds at the tempo before the change. There is. However, when the music changes in accordance with the change in accompaniment style, it is a musically natural form that the tempo also changes in accordance with the change in music. In particular, when the accompaniment style is sequentially changed during automatic accompaniment to change the music and the accompaniment music is desired to be expressed like a "medley performance", a constant tempo always causes a musical unnaturalness.

That is, in the conventional automatic accompaniment apparatus,
To change the tempo at the turn of the song, stop the automatic accompaniment, set a new accompaniment style, restart the accompaniment with the corresponding preset tempo value, or change the accompaniment style. After performing the operation, the tempo operator is operated to change the tempo in accordance with the timing when the accompaniment style changes. However, in the operation of the above item, the automatic accompaniment is interrupted each time, and in the above operation, the tempo operator must be operated in anticipation of the timing when the accompaniment style changes,
There is a bad effect that it becomes complicated. After all, the conventional automatic performance device has a problem that it is not possible to perform automatic accompaniment intended to be a "medley performance" in which the accompaniment tempo is changed according to the change of the accompaniment style. The present invention has been made in view of the above circumstances, and an object thereof is to provide an automatic accompaniment device capable of performing an automatic accompaniment intended for a medley performance in which the accompaniment tempo is changed according to the change of the accompaniment style.

[0007]

According to the present invention, there is provided a style selecting means for selecting a desired accompaniment style from a plurality of accompaniment styles and performance information provided for each of the plurality of accompaniment styles. The tempo data that indicates the performance tempo of the accompaniment style and general accompaniment patterns.
Storage means for storing a multiple <br/> number of accompaniment pattern data consisting Ndeta and specific accompaniment pattern data, the
Corresponds to the accompaniment style selected by the style selection means
One accompaniment pattern from the accompaniment pattern data
Pattern designating means for designating data, and the pattern finger
Reproducing means for reading and reproducing the accompaniment pattern data instructed by the indicating means, and selection by the style selecting means during reading of the accompaniment pattern data,
Accompaniment pattern data read, and style switching means for switching the indicated <br/> accompaniment pattern data by newly selected accompaniment <br/> the pattern instruction section in the style, switching by the style switching means, switching Multiple accompaniment pattern days in previous accompaniment style
When it made during playback of the specific accompaniment pattern data of the data, and a tempo control means for controlling reading tempo of the accompaniment pattern data according to the tempo data corresponding to the newly selected accompaniment style It is characterized by doing.

[0008]

According to the above arrangement, when the desired accompaniment style from among a plurality of accompaniment style by style selection means is selected, playback means, the storage means, depending on the tempo data corresponding to the selected accompaniment style Pattern finger
The accompaniment pattern data instructed by the indicating means is read and reproduced. Then, multiple accompaniment pattern data can be read.
The accompaniment track by the style selection means
When there is a tile selection, the style switching means
Set the accompaniment pattern data to be output to the newly selected accompaniment star.
Accompaniment pattern data specified by the pattern designating means in the file
Switch to data. This style switching means
Replacement is performed during playback of the specific accompaniment pattern data.
If the tempo control means
Depending on the tempo data corresponding to the playing style, the accompaniment pattern
The read tempo of the zone data is controlled. By this
You can change the style of the song
-To change the pattern being read during performance
In addition, make the tempo of the performance compatible with the pattern.
It becomes possible to switch.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. A. Overall Configuration FIG. 1 is a block diagram showing the overall configuration of an electronic percussion instrument which is an embodiment of the present invention. In the embodiment shown in FIG. 1, an automatic rhythm performance is possible in addition to a normal manual rhythm (percussion instrument) performance. It has a simple structure. In this figure,
Reference numeral 1 is a CPU that controls each part of the musical instrument, and its operation will be described later. Reference numeral 2 denotes a ROM in which various control programs loaded in the CPU 1 and various parameters for tone control are stored. Reference numeral 3 denotes a RAM used as a work area of the CPU 1, in which various calculation results, register values, accompaniment (rhythm) pattern data described later, etc. are temporarily stored. The accompaniment (rhythm) pattern data is
For example, it is read from an external storage device (not shown) such as a hard disk unit or a floppy disk drive,
This is written in a predetermined storage area of the RAM 3.

The structure of accompaniment (rhythm) pattern data stored in the RAM 3 will be described with reference to FIG. The accompaniment pattern data is, for example, “rock”,
It is formed from pattern data PD _{1 to} PD _n provided for each accompaniment style such as “pops” or “disco”. As shown in FIG. 2, these pattern data PD _{1 to} PD _n are composed of a header HD, a normal pattern NP and an ending pattern ED.

The header HD is composed of various data indicating the attributes of the accompaniment pattern, that is, a style number SN, a clock maximum value MC, a normal bar number NMN, an ending bar number EMN, an initial tempo value IT and a user-set tempo value YT. Has been done. Here, the style number SN represents the type of accompaniment style, and the clock maximum value MC represents the length of one bar defined by the normal pattern NP described later. This clock maximum value MC
Represents the number of tempo clocks included in one bar, and the number of clocks changes according to the time signature of the song. For example, when the number of tempo clocks per quarter note is "24" and the time signature of the music is 4/4, the maximum clock value MC is "95".

Further, the normal measure number NMN represents the number of measures of the musical piece defined in the normal pattern NP described later, and the ending measure number EMN represents the number of measures of the ending pattern defined in the ending pattern ED described later. Further, the initial tempo value IT is a tempo value preset corresponding to the accompaniment style represented by the style number SN, while
The user-set tempo value YT represents a tempo value arbitrarily created by the user.

The normal pattern NP is composed of a timing TM representing the sounding timing, a note event NE representing the sounding content thereof, and a bar line ML representing the bar position in the performance music, and the accompaniment style represented by the style number SN. To form a performance song. Here, the note event NE is a note number NN that represents the pitch corresponding to the type of percussion instrument sound and a velocity VE that represents the volume to be sounded.
It consists of L and. The ending pattern ED is a pattern added to the end of the music automatically accompanied by the normal pattern NP, and is composed of a timing TM, a note event NE and a bar line ML like the pattern NP. It The pattern data PD _{1 to} PD _n having such a data structure are stored with a resolution having a predetermined note length as a minimum unit, and these are read out sequentially and repeatedly by the step of the read pointer.

Next, the overall structure of the embodiment will be described with reference to FIG. 1 again. In the figure, reference numeral 4 is a timer, which generates a tempo clock TMP that defines the performance tempo during automatic accompaniment, and supplies this to the CPU 1. Note that C
The PU1 executes an interrupt processing routine described later every time the tempo clock TMP is supplied (for example, "24" times per quarter note) to generate various musical tone control data. A plurality of performance operators 5 are arranged on the front surface (not shown) of the panel, and are pads that are hit by a stick or the like during rhythm performance. The pad 5 includes a vibration sensor that detects a hit applied to the pad surface, and generates a vibration detection signal according to the hit vibration. 6 is a pad interface. The pad interface 6 generates the key-on signal KC when the vibration detection signal supplied from the pad 5 exceeds a predetermined level, and also generates the velocity signal VEL indicating the striking strength, and supplies these signals to the bus line. .

Reference numeral 7 denotes various operators provided on the front surface of the panel of the electronic percussion instrument. The operator 7 has a start / stop switch SS for instructing start / stop of automatic accompaniment, a style selection switch STL for instructing or switching an accompaniment style, and an ending pattern for selecting an ending pattern added to the end of the normal pattern. Switch ES, tempo mode switch TMS for selectively selecting either "initial tempo" preset for each accompaniment style or "user set tempo" arbitrarily set by the user, and "user set tempo" are set A user tempo setting switch YTS that is sometimes operated, a tempo change switch TCS that is operated when changing the set tempo to an up tempo or a down tempo, and the like are provided.

Reference numeral 8 denotes an operator interface, which generates a switch signal corresponding to the operation of each switch constituting the operator 7, and supplies this to the CPU 1 via the bus line. A display circuit 9 is composed of a liquid crystal display element (LCD) or the like, and displays the display data supplied from the CPU 1, for example, the style number SN described above. 10 is configured by a well-known waveform memory reading method,
It is a tone generator circuit for synthesizing musical tones of percussion instrument sounds in accordance with musical tone control parameters supplied from U1.

When the rhythm performance is performed by the pad 5, the tone generator circuit 10 synthesizes a percussion instrument sound whose tone color is set in advance according to the key-on signal KC and the velocity signal VEL supplied from the CPU 1, and synthesizes the musical tone. Output as a signal. Further, when the automatic rhythm performance is made generates a musical tone signal of the accompaniment sound according to the pattern information read out from among the pattern data PD ₁ -PD _n corresponding to the selected accompaniment style. Reference numeral 11 is a sound system. The sound system 11 applies a sound effect to a musical tone signal supplied from the sound source circuit 10 and performs filtering such as removal of unnecessary noise,
Further, the filtered signal is D / A converted and then amplified and sounded from a speaker.

B. Operation of Embodiment Next, the operation of the embodiment having the above configuration will be described with reference to FIGS.
This will be described with reference to FIG. Here, after explaining the state transition representing one mode example of the operation, the operation of the embodiment corresponding to this state transition will be described based on the flowcharts shown in FIGS. 4 to 13.

(1) State Transition FIG. 3 is a state transition diagram showing one mode example of the operation according to this embodiment. In this figure, STL indicates the time when the style selection switch described above is operated, and SS indicates the operation time of the start / stop switch described above. The state of the automatic accompaniment started in response to the operation of the start / stop switch SS is represented on the time axis. On this time axis, the operation timing of the style selection switch STL and the operation timing of the ending switch ES are shown. Is shown.

In this figure, the normal pattern NP-1 corresponding to the accompaniment style A is operated according to the operation of each switch.
, A normal pattern NP-2 corresponding to accompaniment style B, an ending pattern ED-2 corresponding to accompaniment style B, a normal pattern NP-3 corresponding to accompaniment style C,
Ending pattern ED corresponding to accompaniment style D-
4 shows the ending performance of No. 4 and represents the so-called state transition intended for medley performance. That is, the “normal pattern NP-1, NP-2, ending pattern EP-2” is the first song, and the “normal pattern NP-
3, ending pattern EP-4 ”is assumed to be the second song, and the first and second songs are played in a medley. Here, there is a place where the accompaniment style changes from the normal pattern NP-1 to the normal pattern NP-2, but this is not intended to change the song, and the tempo is not changed as it changes the atmosphere of the performance. I have to. Hereinafter, operations for realizing such a medley performance will be sequentially described. The switch ST shown in FIG.
Switch operations other than L, SS, and ES will be separately described after the operation of this state transition is described in detail.

(2) General Operation (Operation of Main Routine) First, when power is turned on in the embodiment having the above-mentioned configuration, C
PU1 loads the control program stored in ROM2. As a result, the main routine shown in FIG. 4 is started, and the processing of the CPU 1 proceeds to step Sa1. In step Sa1, initialization for resetting various registers and the like is performed, and the flow advances to the next step Sa2. Step S
At a2, a switch processing routine for performing processing according to various switch operations of the operator 7 is started. The operation of this switch processing routine will be described later with reference to the state transition shown in FIG. Next, when the switch processing routine is completed, the processing of the CPU 1 proceeds to step Sa3 and executes other processing. The other processing is, for example, a sounding processing for producing a percussion sound according to a performance operation applied to the pad 5, a display processing for displaying the execution result of the switch processing routine on the display circuit 9, or the like. Then, when such processing is completed, the processing of the CPU 1 returns to step Sa2 again, and the above-described operation is repeated.

(3) Style selection switch event operation (setting of accompaniment style A) As shown in FIG. 3, before the automatic accompaniment is started, the style to select the accompaniment style A (for example, "rock") is selected. When the selection switch STL is operated, the CPU 1 activates the switch processing routine shown in FIGS. 5 and 6 through the above step Sa2, and advances the processing to step Sb1. In step Sb1, it is determined whether or not the start / stop switch SS has been started. That is, the switch SS is a toggle switch that alternately switches between the start operation and the stop operation, and the switch state changes according to the operation. Here, since the switch SS is not operated, the determination result is "NO", and the process proceeds to step Sb5. In step Sb5, the switch SS
It is determined whether or not the stop operation has been performed. Even in this case, since the switch SS is not operated, the determination result is "NO", and even when the switch SS is not operated, the determination result is "NO". Next step S
Go to b8.

When the processing of the CPU 1 proceeds to step Sb8, it is determined whether the ending switch ES has been operated. Here, since the switch ES is not operated, the determination result is "NO", and the process proceeds to step Sb11. Then, in step Sb11, it is determined whether or not the style selection switch STL has been operated. in this case,
When the switch STL is operated, the determination result becomes “YES”, and the process proceeds to the next step Sb12. In step Sb12, it is determined whether or not the run flag is "1". The run flag is a flag that is "1" when the automatic accompaniment is being performed and "0" when the automatic stop is being stopped. Therefore, in this case, since the automatic accompaniment has not started, the determination result is “NO”, and step S
Go to b14.

When the processing of the CPU 1 proceeds to step Sb14, the style number SN associated with the selected accompaniment style is set in the register STYL, and the processing proceeds to the next step Sb15 (see FIG. 6). In step Sb15,
It is determined whether or not the tempo change switch TCS described above has been operated. In this case, since it has not been operated, the determination result is "NO", and the flow proceeds to step Sb17. In step Sb17, it is determined whether the tempo mode switch TMS has been operated.

Here, since the switch TMS is not operated, the determination result is "NO", and the step Sb
Proceed to 19. When the processing of the CPU 1 proceeds to step Sb19, it is further determined whether or not the user tempo setting switch YTS has been operated. In this case, since it has not been operated, the determination result is “NO”, and the process proceeds to step Sb22. The operation according to the operation of these switches TCS, TMS, YTS will be described later. Next, in step Sb22, other switch processing such as setting a tone color in accordance with a switch operation other than the above-mentioned operations, for example, a tone color selection switch operation for designating a predetermined percussion instrument sound is performed, and thereafter, the processing of the CPU 1 Returns to the main routine (see FIG. 4).

(4) Operation of start / stop switch event As described above, when the start / stop switch SS is operated while the accompaniment style A is selected by the operation of the style selection switch STL, the CPU 1
The process proceeds to step Sb1 of the switch processing routine described above again, and it is determined whether the start / stop switch SS has been started. Here, when the start operation is performed, the determination result of step Sb1 is “YE
S ”, and the process proceeds to the next step Sb2. Step Sb
At 2, it is determined whether the run flag is "0", that is, whether the automatic accompaniment is stopped. In this case, the determination result is "YES" because the vehicle is stopped, and the process proceeds to step Sb3.

When the processing of the CPU 1 proceeds to step Sb3, the pattern read initial processing routine shown in FIG. 7 is activated, and the processing proceeds to step Sc1. The operation of this routine will be described below with reference to FIG. First, step S
In c1, the style number SN set in the register STYL is read and the pattern data PD _{1 to} PD _n having the style number SN in the header information HD are searched. Then, for example, when the pattern data PD ₁ corresponds to the accompaniment style A, the pattern data PD ₁
The header information HD constituting the is sequentially read.

Next, at step Sc2, the number of normal bars NMN read from the header information HD is set in the register NMEAS. Furthermore, the ending measure number EMN is set in the register EMEAS and the maximum clock value MC
Are set in the register MAXCLK, and the process proceeds to the next step Sc3. When the processing of the CPU 1 proceeds to step Sc3, it is determined whether the tempo mode flag is "1". Here, the tempo mode flag becomes "1" when the aforementioned tempo mode switch TMS is not operated, that is, when a preset "initial tempo value" is designated. On the other hand, when the tempo mode switch TMS is operated and the "user set tempo value" set by the user is designated, it is set to "0".

In this case, since the tempo mode switch TMS is not operated and the tempo mode flag is "1", the judgment result of step Sc3 is "YE."
S ”, and the process proceeds to step Sc4. At step Sc4, the initial tempo value IT read from the header information HD is set as the performance tempo. As a result, the CPU 1 gives an instruction to the timer 4 to generate the tempo clock TMP according to the initial tempo value IT. Next, when the processing proceeds to step Sc5, the CPU 1 reads out the timing TM which is the head data of the normal pattern information NP-1 in the pattern data PD ₁ corresponding to the accompaniment style A, and sets it in the register TIME.

When the first tone tongue of the normal pattern information NP-1 is read in this way, the CPU 1 returns from the pattern read processing routine to the above-mentioned switch processing routine (see FIG. 5), and proceeds to step Sb4.
In step Sb4, the run flag is set to "1" and the register CLK is set to "0" prior to the start of automatic accompaniment.
Are initialized by setting "1" in the register MEAS. The register CLK temporarily stores the number of tempo clocks indicating the timing within a bar, and the register MEAS temporarily stores the number of bars. That is, in step Sb4, the contents of these registers are reset prior to the start of automatic accompaniment. Next, the CPU 1 advances the processing to step Sb5 and thereafter, but in this case, since each switch event does not occur at all, this switch processing routine is completed and the process returns to the main routine.

(5) Automatic accompaniment operation based on normal pattern NP-1 Next, when the parameters required for starting automatic accompaniment are adjusted based on the operations of the above (3) and (4), the CPU 1 executes the operation shown in FIG.
The interrupt processing routine shown in is executed to start automatic accompaniment. When the tempo clock TMP corresponding to the initial tempo value IT set in step Sc4 (see FIG. 7) described above is supplied from the timer 4 to the CPU1, the CPU1 activates the interrupt processing routine shown in FIG. The process proceeds to Sd1. In step Sd1, it is determined whether the run flag is "1", that is, whether or not the automatic accompaniment state is set. In this case, since the automatic accompaniment has started, the determination result is “YES”, and the next step Sd2
Proceed to.

In step Sd2, it is determined whether or not the value of the register CLK is the same as that of the register TIME, that is, whether or not the tone generation of the normal pattern information NP-1 is performed. Here, if the tempo clock number and the timing TM match, it is regarded as the sound generation timing, the determination result is "YES", and the process proceeds to the next step Sd3.
In step Sd3, the read pointer of the normal pattern information NP-1 is incremented to read the note event NE, and the note number NN and velocity VEL forming this note event NE are supplied to the tone generator circuit 10. As a result, the percussion instrument sound corresponding to the note number NN is produced at a volume corresponding to the velocity VEL.

Then, in step Sd4, the next timing TM is read from the normal pattern information NP-1 and set in the register TIME. And
In step Sd5, the CPU 1 determines whether or not the tempo clock number of the register CLK matches the value of the register MAXCLK, that is, whether or not the current timing TM is at the end of the bar. Where timing T
If M is not at the end of the bar, the result is "NO".
Then, the process proceeds to step Sd6. In step Sd6,
The value of the register CLK is incremented by 1, and the number of tempo clocks is incremented. After this, the CPU 1 starts the timer 4
The above steps Sd1 to Sd4 are repeated every time the tempo clock TMP is supplied from. As a result, the automatic accompaniment with the normal pattern NP-1 (accompaniment style A) sequentially proceeds according to the initial tempo value IT.

Now, for example, at the end of the first measure of the normal pattern NP-1, the above step Sd
The determination result of 5 is "YES", and the process proceeds to step Sd7. In step Sd7, the content of the register CLK is reset to "0" in order to read the next bar. Then C
When the processing of PU1 proceeds to step Sd8 (see FIG. 9),
It is determined whether or not the ending reservation flag is "0". The ending reservation flag is "1" when the ending switch ES is operated. In this case, since the switch ES has not been operated, the determination result is “YES”, and the processing of the CPU 1 proceeds to step Sd9.

In step Sd9, it is determined whether the ending flag is "1", that is, whether the automatic accompaniment is in the ending pattern. In this case, since automatic accompaniment based on the ending pattern is not performed, the determination result is “NO”, and the process proceeds to step Sd10 shown in FIG. In step Sd10, it is determined whether or not the style select flag is "1", that is, whether or not the style select switch STL is operated during the automatic accompaniment. Then, in this case, since the switch STL is not operated, the determination result is "NO", and the process proceeds to step Sd25.

When the processing of the CPU 1 proceeds to step Sd25, it is determined whether or not the value of the register MEAS and the value of the register NMEAS match, that is, whether or not the current number of measures is the last measure of the normal pattern NP-1. To judge. Here, if the song progress has not reached the final measure,
The determination result is “NO”, and the process proceeds to step Sd26.
In step Sd26, the value of the register MEAS is incremented by 1 in order to advance the music to the next bar.

On the other hand, when the progress of the music reaches the final measure, the value of the register MEAS and the value of the register NMEAS match, and the judgment result of the step Sd25 is "YE."
S ”, and the processing of the CPU 1 proceeds to step Sd27. In step Sd27, since the normal pattern is read out repeatedly, in this case, the normal pattern N
The timing TM which is the head data of P-1 is read,
This is written in the register TIME. And after this,
The CPU 1 proceeds to step Sd13, and registers MEAS
The value of is reset to "1". As a result, the normal pattern NP-1 is repeatedly read.

(6) Selection operation of accompaniment style B The normal pattern NP- by the operation described in the above item (5).
When the accompaniment style B is selected by operating the style selection switch STL as shown in FIG. 3 while the automatic accompaniment of No. 1 is in progress, the processing of the CPU 1 proceeds to step Sb11 (see FIG. 5). ) To step Sb12, and it is determined whether or not the run flag is "1". In this case, since the automatic accompaniment is being performed, the determination result is “YES”, and the process proceeds to the next Step Sb13. In step Sb13, the style select flag is set to "1". This style select flag becomes "1" when the style select switch STL is operated during automatic accompaniment. Then, thereafter, the style number SN corresponding to the accompaniment style B is set in the register STYL in step Sb14 described above.

(7) Accompaniment style A to accompaniment style B
By the way, while the style selecting operation described in the item (6) is being performed, the CPU 1 executes the interrupt processing routine according to the tempo clock TMP, and the normal pattern N
The automatic accompaniment based on P-1 continues. In such a state, for example, if the value of the register CLK is
When it matches the value of AXCLK and the timing TM comes to the end of the bar, the judgment result of the above-mentioned step Sd5 (see FIG. 8) becomes "YES", and the routine proceeds to step Sd7.

Then, after this, the CPU 1 proceeds to step Sd10 via steps Sd7 to Sd9 described above.
At this time, in step Sd10, since the accompaniment style B is selected by the operation of the switch STL in the above item (6), the determination result is “YES”, and the process proceeds to step Sd11. When the processing of the CPU 1 proceeds to step Sd11, the first read processing routine shown in FIG. 12 is activated and step Se1 is executed. The operation of the first read processing routine will be described below with reference to FIG.

At step Se1, the style number SN set in the register STYL is read and
Searching for a pattern data PD ₁ -PD _n with the style number SN in the header information HD. Then, for example, when the pattern data PD ₂ corresponds to the accompaniment style B selected by the operation in the above (6), the header information HD forming the pattern data PD ₂ is sequentially read. Next, in step Se2, the number of normal bars NMN read from the header information HD is set in the register N.
Ending measure number EMN is registered in MES in MEAS
The clock maximum value MC is set to the register MAXCLK in EAS.
Set each to. Next, the processing of CPU1 is proceeds to step Se3, among the pattern data PD ₂ corresponding to the accompaniment style B, reads the timing TM as the head data of the normal pattern information NP-2, this is set to the register TIME.

When the first tone generation tongue of the normal pattern information NP-2 is read in this way, the CPU 1 returns to the interrupt processing routine shown in FIG.
Proceed to d12. In step Sd12, the style selection flag is reset to "0", and the process proceeds to the next step Sd13. In step Sd13, the normal pattern NP-2
The register MEAS is set to "1" to represent the first measure of the. As a result, the automatic accompaniment corresponding to the normal pattern information NP-2 progresses from the next tone generation timing. In this way, if the accompaniment style is changed during normal pattern performance, the measure when the style change operation is performed will proceed with the accompaniment style before the change, and with the modified accompaniment style from the next measure (Fig. 3). In this case, the playing tempo advances at the tempo value corresponding to the accompaniment style before the change when the style is changed.
Proceed with the tempo value corresponding to the accompaniment style changed from the next measure.

(8) Operation of Ending Switch Event When the ending switch ES is operated as shown in FIG. 3 while the automatic accompaniment based on the normal pattern NP-2 is in progress, the above-mentioned switch processing routine ( The determination result of step Sb8 (see FIG. 5) is “YE
S ”, and the process proceeds to step Sb9. In step Sb9, it is determined whether or not the run flag is "1". In this case, since the automatic accompaniment is being performed, this determination result is "YES".
Then, the process proceeds to the next step Sb10. When the processing of the CPU 1 proceeds to step Sb10, the ending reservation flag is set to "1" in order to give advance notice of reading the ending pattern.

(9) Switching operation from the normal pattern to the ending pattern Then, in the state where the ending is specified according to the above item (8), the value of the register CLK is set to the register MAX.
When the timing TM coincides with the value of CLK and the timing TM comes to the end of the bar, the value of the register CLK is reset in step Sd7 (see FIG. 8) described above. Next, in a state where the ending reservation flag is set to "1", step Sd8
The determination result (see FIG. 9) is “NO”, and the process of the CPU 1 proceeds to step Sd14 (see FIG. 11). In step Sd14, it is determined whether or not the style select flag is "1", that is, whether or not the style select switch STL is operated. In this case, since the switch STL is not operated, the determination result is "NO", and the process proceeds to step Sd15.

At step Sd15, the timing TM which is the leading data of the ending pattern ED-2 corresponding to the normal pattern NP-2 is read and written in the register TIME. Then, step Sd
At step 16, the ending reservation flag is set to "0", the ending flag is set to "1", and further, "1" is set to the register MEAS to represent the first measure of the pattern ED-2. . As a result, the performance based on the pattern NP-2 is performed until the measure at the time when the ending switch ES is operated is completed, and the ending pattern ED-2 progresses from the next measure (FIG. 3). reference).

(10) Style selection operation during performance of ending pattern For example, as shown in FIG.
If the accompaniment style D is selected by operating the style selection switch STL during the automatic accompaniment of the first bar of -2, the CPU 1 causes the CPU 1 to perform steps Sb11 to Sb14 in the switch processing routine (see FIG. 5). The style select flag is set to "1" and the style number SN corresponding to the accompaniment style D
Is set in the register STYL.

When the CPU 1 executes the interrupt processing routine in the state in which the style is selected during the ending, the first measure of the ending pattern ED-2 is played through steps Sd1 to Sd6. When the first measure is completed, the tempo clock number of the register CLK is reset in step Sd7, and the process proceeds to step Sd8 shown in FIG. At this time, since the ending reservation flag is set to "0", step Sd8
The result of the determination is "YES", and the process proceeds to step Sd9. Next, in step Sd9, it is determined whether or not the ending flag is "1". In this case, since the flag is "1", the determination result is "YES" and the process proceeds to step Sd17.

When the processing of the CPU 1 proceeds to step Sd17, it is determined whether or not the value of the register MEAS and the value of the register EMEAS are the same, that is, the current number of measures matches the number of measures of the ending pattern ED-2. Determine whether or not Here, if they do not match,
The determination result is “NO”, the process proceeds to step Sd18,
The value of the register MEAS is incremented by 1 to advance the current number of measures.

On the other hand, the value of register MEAS and register E
In the state where the value of MEAS matches and the current number of measures is the final measure of the ending pattern ED-2, the determination result of this step Sd17 becomes "YES", and the routine proceeds to step Sd19. In step Sd19, it is determined whether or not the style select flag is "1", that is, whether or not the style selection operation is performed. In this case, since the operation of selecting the accompaniment style C has been performed, the determination result is “YES”, and the process proceeds to step Sd20.

When the processing of the CPU 1 proceeds to step Sd20, the above-mentioned pattern read initial processing routine (FIG. 7).
(See) and starts Step Sc1 to Sc5. As a result, the header information HD corresponding to the style number SN set in the register STYL is read, and among the read information, the normal bar number NMN is stored in the register NMEAS, the ending bar number EMN is stored in the register EMEAS, and the clock maximum is set. Value MC to register M
It is set to AXCLK respectively.

When the tempo mode switch TMS is not operated, that is, in the preset tempo mode, the preset "initial tempo value" is set as the performance tempo. As a result, the CPU 1 instructs the timer 4 to generate the tempo clock TMP according to the initial tempo value IT, reads the timing TM which is the leading data of the normal pattern NP-3 (corresponding to accompaniment style C), Register this in the register TIM
Set to E. The tempo mode switch TM
When S is operated and the user-set tempo mode is set, the determination result of step Sc3 in the same routine becomes "NO", the process proceeds to step Sc6, and the user-set tempo value is treated as a performance tempo.

When the first sounding tongue of the normal pattern NP-3 is read in this way, the CPU 1 returns to the above-mentioned interrupt processing routine (see FIG. 9) and advances the processing to step Sd21. In step Sd21, the ending flag is set to "0", the style select flag is set to "0", and the register MEA is set.
The number of measures is initialized by setting the value of S to "1". As a result,
Simultaneously with the completion of the automatic performance based on the ending pattern ED-2, the performance of the newly selected accompaniment style C, that is, the normal pattern NP-3 is started. As described above, when the style is changed during the performance of the ending pattern, the performance is advanced in a new accompaniment style from the bar next to the ending of the ending pattern.

(11) Ending Style Selection Operation During Normal Pattern Performance Next, as shown in FIG. 3, an operation for selecting an ending style in the process of progressing the automatic accompaniment based on the normal pattern NP-3 will be described. . First,
When the ending switch ES is operated, the above (9)
As described in the section, the performance based on the pattern NP-3 is performed until the bar at the time when the ending switch ES is operated ends, and the ending pattern progresses from the next bar. When the accompaniment style D is selected by operating the style selection switch STL in this state, the ending style is changed. The ending style change thus made will be described in detail below.

When the ending switch ES is operated and the ending reservation flag is "1" and the style selection switch STL is operated and the style selection flag is "1", the CPU 1 executes the interrupt processing routine (FIG. 8). The steps Sd1 to Sd6 of the reference) are sequentially repeated until the bar at the time when the switch ES is operated is completed. Then, when the value of the register CLK reaches the value corresponding to the end of the bar, the register CLK is reset (step Sd7), and it is determined in step Sd8 (see FIG. 9) whether or not the ending reservation flag is "0". To do.

In this case, since the ending reservation flag is set to "1" by operating the ending switch ES, the result of the determination is "NO", and the processing of the CPU 1 proceeds to step Sd14 (see FIG. 11). Then, in step Sd14, it is determined whether or not the style select flag is "1". At this time, style selection switch S
Since the style select flag is set to "1" by the operation of TL, the determination result is "YES", the flow proceeds to step Sd22, and the second read processing routine shown in FIG. 13 is activated.

When the routine is started, the CPU 1 proceeds to step Sf1 to read the style number SN set in the register STYL and also to have the pattern data PD ₁ -PD ₁ having the style number SN in the header information HD.
Search PD _n . Then, for example, when the pattern data PD ₄ corresponds to the accompaniment style D, the header information HD forming the pattern data PD ₄ is sequentially read. Next, in step Sf2, the number of normal bars NMN read from the header information HD is set in the register N.
Ending measure number EMN is registered in MES in MEAS
The clock maximum value MC is set to the register MAXCLK in EAS.
To complete this routine.

Then, when returning from the second read processing routine to the interrupt processing routine again, the CPU 1 proceeds to step Sd23 (see FIG. 11) and resets the style select flag to "0". Then, after this, the steps Sd15 to Sd16 described above are executed. As a result, the ending pattern ED-4 corresponding to the accompaniment style D selected by the style selection switch STL advances from the transition of the bar of the normal pattern NP-3 (see FIG. 3).

(12) Stop of Automatic Accompaniment Next, the operation of stopping the automatic accompaniment based on the ending pattern ED-4 described above will be described. in this case,
By the operation of the interrupt processing routine, the pattern ED-
When 4 is played and the final measure is reached, the judgment result of the above-mentioned step Sd17 (see FIG. 9) becomes “YES”,
It proceeds to step Sd19. Next, in step Sd19, it is determined whether or not the style select flag is "1", that is, whether or not the style select operation is performed. Here, since the style selection operation has not been performed, the determination result is "NO", and the process proceeds to step Sd24. Step S
At d24, the ending flag is set to "0" and the run flag is set to "0". As a result, CP
U1 detects that the run flag is "0" at the next interrupt timing and stops the automatic accompaniment.

(13) Other operations in response to switch operation The operations described in the items (1) to (11) above refer to the state transitions shown in FIG. Therefore, the operation according to the switch operation which is not disclosed in this state transition will be described. Operation when the start / stop switch SS is operated to stop When the start / stop switch SS whose switch state changes in a toggle manner is operated during automatic accompaniment, the switch SS enters a stop operation state. In this case, CPU1
Sets the determination result of step Sb5 in the switch processing routine (see FIG. 5) to “YES”, and proceeds to the next step S
Go to b6. In step Sb6, it is determined whether the run flag is "1", that is, whether or not the accompaniment is being performed.
At this time, since the automatic accompaniment is in progress, step Sb
Processing proceeds to 7.

At step Sb7, the run flag is set to "0".
And the style select flag is set to "0". Further, the ending reservation flag and the ending flag are both set to "0" to complete the automatic accompaniment. Then, when the CPU 1 executes the interrupt processing routine under such a state, the above-mentioned step S
The judgment result of d1 becomes "NO", and the automatic accompaniment is interrupted.

Operation when Tempo Change Operation is Performed a. Change of automatic performance tempo When the tempo change switch TCS is operated while the automatic accompaniment is stopped, the CPU 1 causes the switch processing routine (see FIG. 5).
Refer to the result of the determination in step Sb15 in “YE
S ”, the process proceeds to the next step Sb16. Then, in step Sb16, the tempo value set at that time is changed according to the operation of the switch TCS. For example, when the tempo change switch TCS is operated to increase the tempo by a predetermined value, the predetermined value is changed to
Change the tempo value by adding to the tempo value at that point. As a result, the automatic performance is performed at the tempo according to the tempo change operation.

B. Change tempo value set by user Temporary mode switch TMS when automatic accompaniment is stopped
When is operated, the CPU 1 returns the determination result of step Sb17 in the switch processing routine (see FIG. 5) to “YE
S ”, the process proceeds to the next step Sb18. In step Sb18, the tempo mode flag is inverted.
Here, the tempo mode flag becomes "1" when the preset "initial tempo value" is designated, while the "user set tempo value" set by the user.
It becomes "0" when specifying. Therefore, in this case, the flag becomes "0", and the next step Sb19
Proceed to.

In step Sb19, it is determined whether or not the user tempo setting switch YTS has been operated. Here, in order to change the user-set tempo, the switch Y
When the TS is operated, the determination result is “YES”, and the process proceeds to step Sb20. The processing of the CPU 1 is step Sb.
In step 20, it is determined whether the run flag is "0". In this case, since the automatic accompaniment is stopped, the determination result is “YES”, and the process proceeds to the next Step Sb21. In step Sb21, a new tempo value is written in the area of the user-set tempo value YT of the header information HD of the pattern data corresponding to the currently selected accompaniment style, that is, the content of the register STYL. Here, the new tempo value is a value set according to the operation of the above-mentioned tempo change switch TCS.

As described above, according to this embodiment, if the accompaniment style is changed while the automatic accompaniment based on the ending tapan is being performed, the accompaniment style is changed after the end of the automatic accompaniment of the ending pattern. Since the automatic accompaniment is continued according to the initial tempo value preset for the changed accompaniment style, the tempo can be changed at the transition of the song, and as a result, automatic accompaniment intended for "medley performance" is realized. Will be.

In the above-mentioned embodiment, the mode of performing the automatic rhythm is disclosed, but the invention is not limited to this, and is applied to, for example, chord backing for playing chords or automatic accompaniment accompanied by bass performance. It is also possible. Further, in the above embodiment, the ending switch E
Although it is arranged to shift to the ending pattern from the bar next to the S operation, instead of this, for example, the timing of the switch operation made in the bar is detected, and the ending pattern is directly changed according to the detected operation timing. It may be configured to control whether to shift or to shift to the ending pattern from the next bar.

In the above embodiment, the style change made in the ending pattern has been described. However, this is not limited to the ending pattern, but may be a fill-in pattern or the like. In short, any pattern can be used as long as it is inserted in a normal pattern and the flow or image of the song changes, and such a pattern is intended for medley performance based on the above-described operation. Automatic accompaniment will be realized.

In addition, in this embodiment, an example in which the accompaniment pattern is composed of a normal pattern and an ending pattern is given, but an intro pattern may be added to this. By doing this, for example,
When the style is changed or an intro instruction is given during the ending, the tempo may be changed after the ending pattern is finished and the style is changed to the intro pattern of the changed style.

In this embodiment, the accompaniment pattern has the data format shown in FIG. 2. However, the data accompaniment pattern is not limited to this, and the automatic accompaniment intended for medley performance is possible regardless of the data format. Can be realized. That is, in the above-mentioned embodiment, the format is “note event + intra-bar event occurrence timing”. However, for example, a data format of known “note event + interval between note events” or “memory” is used. It is of course possible to adopt a format in which the read address of No. 2 is made to correspond to the timing within the bar and the presence or absence of a note event is recorded for each read address.

[0069]

As described in the foregoing, according to the present invention, the desired accompaniment style is selected from among a plurality of accompaniment style by style selection means, reproducing means,
From the storage means , the pattern instructing means instructs the tempo data corresponding to the selected accompaniment style.
The associated accompaniment pattern data is read and reproduced. And
When multiple accompaniment pattern data are being read,
If there is an accompaniment style selected by the style selection means,
Accompaniment pattern data read by the style switching unit
The pattern indicator in the newly selected accompaniment style.
Switch to the accompaniment pattern data instructed by the column. this
Switching by the style switching means can be performed with a specific accompaniment pattern.
Tempo control means, if done during turn data playback
Allows you to select the text that corresponds to the newly selected accompaniment style.
The accompaniment pattern data read-out
Control system. This allows the style of the playing song to be ordered.
Read out during medley performance, which is performed by switching next
The playing tempo according to the pattern
It becomes possible to switch to a pattern corresponding to the pattern, and it is possible to realize an automatic accompaniment intended for "medley performance".

[Brief description of drawings]

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

FIG. 2 is a memory map showing a structure of accompaniment pattern data in the embodiment.

FIG. 3 is a state transition diagram showing an example of an operation mode in the embodiment.

FIG. 4 is a flowchart for explaining the operation of the main routine in the embodiment.

FIG. 5 is a flowchart for explaining the operation of a switch processing routine in the same embodiment.

FIG. 6 is a flowchart for explaining the operation of a switch processing routine in the embodiment.

FIG. 7 is a flowchart for explaining the operation of a pattern read initial processing routine in the embodiment.

FIG. 8 is a flowchart for explaining the operation of an interrupt processing routine in the same embodiment.

FIG. 9 is a flowchart for explaining the operation of an interrupt processing routine in the same embodiment.

FIG. 10 is a flowchart for explaining the operation of an interrupt processing routine in the same embodiment.

FIG. 11 is a flowchart for explaining the operation of an interrupt processing routine in the same embodiment.

FIG. 12 is a flowchart for explaining the operation of a first read processing routine in the embodiment.

FIG. 13 is a flowchart for explaining the operation of a second read processing routine in the embodiment.

[Explanation of Codes] 1 ... CPU, 2 ... ROM, 3 ... RAM, 4 ... Timer, 7
... operator, 8 ... operator interface, 10 ... sound source circuit.

Claims (1)

(57) [Claims] 1. A style selecting means for selecting a desired accompaniment style from a plurality of accompaniment styles, and performance information provided for each of the plurality of accompaniment styles, and at least representing a performance tempo of the corresponding accompaniment style. Tempo data , general accompaniment pattern data and
And a plurality of accompaniment pattern data consisting of specific accompaniment pattern data, and an accompaniment style selected by the style selecting means.
One accompaniment pattern from the corresponding accompaniment pattern data
A pattern instruction means for instructing Ndeta, and reproducing means for reproducing by reading out accompaniment pattern data designated by said pattern instruction unit, when a selection by the style selection means during the reading of the accompaniment pattern data, reads the accompaniment pattern Day
The pattern in the accompaniment style that other, newly selected
Style switching means for switching the accompaniment pattern data designated by the instruction means, switching by the style switching means, made during playback of the specific accompaniment pattern data of a plurality of accompaniment pattern data in before the switching accompaniment styles At this time, an automatic accompaniment apparatus comprising: tempo control means for controlling a read tempo of accompaniment pattern data according to the tempo data corresponding to the newly selected accompaniment style.