JP3194150B2 - Automatic performance device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic performance device, and more specifically, to automatically play a tune inputted from note information input means constituted by performance operators such as a keyboard.
The present invention relates to an automatic performance device that outputs a performance music as score information in a visually recognizable state.

[0002]

2. Description of the Related Art Conventionally, there has been devised an automatic performance apparatus for automatically performing music based on music information inputted from the outside.
In such a conventional automatic performance device, there are two methods for inputting music information to be automatically performed, a so-called real-time input method and a step input method. In this real-time input method, a performance control such as a keyboard is used as a music input means, and a scale and a note length (corresponding to a type of a note) input by a user performing by using the performance control are input. Detected as music information to be played automatically. Another step input method is to sequentially input the scales and the like constituting the music to be automatically played using input means such as a scale input key and a note length input key, and to automatically play the inputted note information such as the scale. Is detected as music information. As shown in FIG. 15, the music information input and detected by the above method is stored in a memory in the order of musical scale data, note length data, note duration (gate time), and sound intensity (velocity) for each note. The automatic performance is performed by reading out the music information from the memory and generating a note sound during automatic performance.

[0003]

However, in such a conventional automatic performance device, particularly in an automatic performance device for inputting music information to be automatically played by a real-time input method, a user operates a keyboard or the like with a performance operator. Is used to input the song by playing the song to be played automatically.
It is not possible to input the note information that constitutes a song, especially the note length, and if you try to output a score based on such incorrect note information, the output score itself may be incorrect. There was a problem of becoming. For example, if the step time of a quarter note is defined as 48, a note of note length having the step time 48 is a quarter note. Normal,
In the score display processing, conventionally, even if there is some error in the step time, the judgment is made to some extent accurately. For example, in order to draw a quarter note, even if the place of the step time 48 is drawn to 49 or 47, it is determined to be a quarter note, and the score of the quarter note is output. However, when actually inputting by the real-time input method, since a human performs using a keyboard or the like, the step time becomes 55 or 40 even if he intends to draw a quarter note. If the predetermined step time greatly differs from the actually input step time, the note length cannot be accurately determined in the musical score output process, resulting in outputting an incorrect musical score. Accordingly, the inventions of the present application provide an automatic performance device capable of accurately outputting music information input by a real-time input method as a musical score and capable of performing a natural and highly musical automatic performance. The purpose is.

[0004]

According to the first aspect of the present invention,
Note information input means for inputting a series of note information constituting song information by performing using a performance operator, and note information storage means for sequentially storing each note information input from the note information input means; , and beat timing input means for inputting the beat timing of the music inputted by the note information input means, the note information stored in the note information storage means the
Correction means for correcting based on the beat timing information input from the beat timing input means, and outputting correction information for converting the corrected note information to note information before correction; Storage control means for rewriting and storing the corrected note information with the note information stored in the note information storage means, and for storing the correction information in the note information storage means for each note;
A musical tone generating means for generating a musical tone based on the note information and the correction information of the musical note information storage means rewritten by the storage control means, and a musical tone information based on the musical note information of the musical note information storage means rewritten by the storage control means. Music score output means for outputting the music score information in a visually recognizable state. The note information input means may be a keyboard, as described in claim 2, and, as described in claim 3, a note, a note length, a note length, It may be possible to input a gate time as an occurrence time and velocity data for controlling the sound intensity. The correction means may include:
As described, from the beat timing input means
The note information is recorded based on the input beat timing information.
It corrects the note length of the note information stored in memory.
And as described in claim 5,
Beat timing input from the beat timing input means
Notes stored in the note information storage means based on information
It corrects the note length and gate time of information.
Is also good.

[0005]

According to the first aspect of the present invention, by playing note information input means provided with performance operators, a series of note information constituting music information for automatic performance is input, and the note information input means inputs the series of note information. The inputted note information is sequentially stored in the note information storage means. Also, the beat timing of the music input by the note information input means is input from the beat timing input means. The note information stored in the note information storage means is corrected by the correction means based on the beat timing information input from the beat timing input means, and the note information stored in the note information storage means under the control of the storage control means. Is rewritten as The correction means outputs correction information for converting the note information after correction into note information before correction, and the correction information is controlled by a storage control means, and the note information storage means is provided for each note. Is stored. The musical tone generating means generates a musical tone based on the corrected note information and the corrected information in the musical note information storage means rewritten by the storage control means in this way, and the musical score output means based on the musical note information after Masayoshi Ura. And output the music score information in a visible state.
Therefore, inaccurate note information input by a human playing using the note information input means can be corrected into accurate note information based on the correction information, and accurate score output can be performed. Further, the corrected note information can be converted into the note information at the time of the performance input based on the correction information, and can be generated as a tone, and the capacity of the storage means for storing the note information can be reduced and naturally. In this way, music-rich automatic performances can be performed. According to the second aspect of the present invention, since the keyboard is adopted as the note information input means, the music information to be automatically played can be input by playing in a natural state, and the natural and rich musicality can be input. Automatic performance can be performed. According to the third aspect of the present invention, the note information input means can input, as note information, a scale, a note length, a gate time as a generation time of each note, and velocity data for controlling the sound intensity. Further, more detailed information can be stored as note information, and a more natural and musically rich automatic performance can be performed. According to the fourth aspect of the present invention, the correction means corrects the note length of the note information stored in the note information storage means based on the beat timing information input from the beat timing input means. It is possible to appropriately correct the note length that plays an important role, to output a more accurate score, and to perform a more natural and musically rich automatic performance. In the invention according to claim 5, the correction means
Is the beat timing input from the beat timing input means
Note information stored in the note information storage means based on the information
More note length and gate time
The song information can be corrected, and a more accurate score can be output.
Can be more powerful and more natural and sound
It is possible to perform an easy-to-play automatic performance.

[0006]

The present invention will be specifically described below with reference to examples.
FIG. 1 to FIG. 10 are views showing an embodiment of the automatic performance device of each invention of the present application. FIG. 1 is a block diagram of the automatic performance device 1. The automatic performance device 1 includes a CPU (Central Process
ng Unit) 2, RAM (Random Access Memory) 3, R
It includes an OM (Read Only Memory) 4, a display unit 5, a clock generation circuit 6, a keyboard 7, a switch unit 8, a tone generator 9, a D / A converter 10, a sound generator circuit 11, and the like.

[0007] The ROM 4 stores various programs and data necessary for controlling the automatic performance device 1. RAM3
Is mainly used as a work memory. In particular, as shown in FIG. 2, the tempo, scale number, step time (note length), and gate time (note time) of a song for automatic performance input from a keyboard 7 described later. ), Velocity (sound volume) information is stored for each note, and the stored tempo, step time and gate time are inputted from a switch section 8 as a beat timing input means described later. Beat Min
Is rewritten with the corrected value corrected based on the logging information. Therefore, the RAM 3 functions as a note information storage unit.

The CPU 2 controls each part of the automatic performance device 1 in accordance with the program in the ROM 4, and executes processing as the automatic performance device, particularly, correction processing of note information as described later. Therefore, the CPU 2 also functions as a correction unit. The display unit 5 uses, for example, a liquid crystal display device using a liquid crystal, and displays various information for notifying the user from the automatic performance device 1, particularly, a musical score of a song for automatic performance. Therefore, the display unit 5 functions as a musical score output unit. The clock generation circuit 6 includes an oscillator, a frequency divider, and the like, and generates a plurality of types of clock signals.

The keyboard 7 is for inputting note information of a tune to be automatically played. Therefore, the keyboard 7 functions as a performance operation element for playing a series of note information constituting the music information, and constitutes note information manual means. Switch part 8
Is configured by various key, in particular, of the song to automatically play beat
And a beat timing key input (beat timing <br/> input means) timing.

The tone generator 9 generates a tone signal based on the tone data transferred from the CPU 2, and generates a D / A signal.
Output to converter 10. The D / A converter 10 converts the input digital tone signal into an analog tone signal, and outputs the analog tone signal to the tone generator 11. The sound generation circuit 11 includes, for example, an amplifier, a speaker, and the like.
Amplifies an analog musical tone signal input from the speaker and generates it as a musical tone through a speaker or the like. Therefore, the tone generator 9, the D / A converter 10, and the tone generator 11 constitute a tone generating means as a whole.

Next, the operation will be described. First, note information input processing of a music piece for automatic performance will be described. In order to input the note information of the music for automatic performance, first, the key operation of the switch section 8 is performed to set the input mode.

Next, note information of a song for automatic performance is input by playing the song using the keyboard 7. Keyboard 7
The note information input by playing a tune using a note includes a note, a note length (step time), a gate time and a velocity, and is sequentially input from the keyboard 7 as shown in FIG. The note information of each note is written to the RAM 3.

Assuming that a tune as shown in FIG. 3 is played, and when the step time (note length) of a quarter note is 48, each note is input with an accurate note length and sounding time. The values of the scale number, step time, gate time and velocity as shown in FIG. However, if note information is input by playing a song using the keyboard 7, the note length or sounding time for each note does not become the regular note length or sounding time due to the personality of the person playing the song. It is played with a slight swing around the note length and sounding time. As a result, R
As the value to be written to AM3, the note length and the step time and the gate time as a sounding section that are delicately shaken are written. The normal note length here refers to a value set in advance by the player for the song, for example, a value set to 48 for a quarter note.

The note information input process will be described below with reference to FIG. In the note information input process, first,
Among the plurality of clocks output from the clock generation circuit 6, the clock having the highest clock frequency is set as the clock (step S1), and the head of the note information storage area of the RAM 3 is set as a variable i for specifying the address of the RAM 3 Set the address (data start address) (step S
2). When the data head address is set in the variable i, clock counting is started (step S3).
It is checked whether or not has changed (step S4). If the input has not changed, it is checked whether the input has been completed (step S5). If not, the process returns to step S4 to check whether the keyboard 7 has changed.

When the keyboard 7 changes, it is checked whether the key is pressed or released (steps S6 and S7). Since the key is pressed first, the process proceeds to step S8, and the address (i +
It is checked whether 2-5) is larger than the data head address A (step S8). At first, since the head address A is set as the variable i, the condition of (i + 2-5)> A is not satisfied in step S8, so that the count value is not written to the address (i + 2-5) in step S9. Then, the process proceeds to step S10, where the scale number corresponding to the key pressed at the address (i + 1) and the velocity at the address (i + 4) are written (step S10).

Next, the counter is set to 0 (step S11), counting is started (step S12), and the process returns to step S4. Similarly, a change in the keyboard 7 is checked, and if there is a change in the keyboard 7, it is checked whether the key is pressed or released (steps S4, S6, S7). Since the key is depressed, the key is released next. When the key release is detected, the count value is stored in the address (i + 3) (step S13). This count value indicates the time from key depression to key release, that is, the gate time (sound generation time).

When the writing of the count value is completed, (i + 5) is set as the variable i, the variable i is set at the head of the address of the next note information, and the flow returns to step S4 to check the change of the next keyboard 7. (Step S14).

Next, when the keyboard is depressed, the depression of the keyboard 7 is detected in steps S4 and S6, and the address (i + 2) is detected.
It is checked whether (-5) is larger than the data head address A (step S8). Now the address has advanced to the address of the note following the data head address A,
The condition (i + 2-5)> A is satisfied, and the count value is written to the address (i + 2-5) (step T9). This count value indicates the time during which the keyboard 7 is pressed, that is, the step time (note length). Count value R
When the writing to AM3 is completed, the scale number of the depressed key is written to the address (i + 1) and the velocity is written to the address (i + 4) in the same manner as described above (step S10). When writing of these data is completed,
The counter is set to 0 and counting of the counter is started (steps S11 and S12).
Detect changes in Next, when the keyboard 7 is released, this key release is detected in step S7, and the count value (gate time) of the counter is written in the address (i + 3) (step S13), and the variable i indicating the address is set to (i + 5). ) To detect the next change of the keyboard 7.

The above processing is sequentially performed for each note played using the keyboard 7, and when the input completion is detected in step S5, the note information input processing is completed. When the note information input processing is completed, as shown in FIG. 2, the scale number, step time, gate time, and velocity of each input note are stored in the RAM 8 using five addresses sequentially from the first note. Written. However, the tempo column is not written in the note information input process. That is, in the automatic performance device 1, by playing a music to be automatically performed by a so-called real-time input method, note information of each note of the music is input and written to the RAM 3. Therefore, the note information of the music to be automatically played is stored in the RAM 3.
Written in the played state.

When the writing of all the note information of the music to be automatically played to the RAM 8 is completed, the reproduction key of the switch section 8 is turned on to reproduce the note information and to adjust the beat timing of each note. Beat timing of switch section 8
Set using the grayed key. Set in this way
The value of the beat timing is the tempo T of the RAM 3 shown in FIG.
Column.

Then, the beat timing setting process is performed next. As shown in FIG. 6, the CPU 2 first sets a clock having a maximum clock frequency as a clock (step Tl), and sets a variable i to a data head address A (R
The variable j is added to the start address of the note information storage area of AM3).
Is set to 0, the flag is set to 0, and the data head address A is set to the variable k (step T2). Where the variable i
Is a variable indicating the read address of the RAM 3, and a variable j
Is a variable indicating the number of notes in a beat. The flag is
This flag indicates whether or not the number of notes in a beat is one. When the number of notes in a beat is two or more, it is 0. The variable k is a variable indicating a write address to the RAM 3.

[0022] Next, the beat timing key to check whether it has been input (step T3), waiting for the beat timing key is input, to start the count of the counter 2 (step T4). At the same time as counting of the counter 2 is started, the scale number of the address (i + 1), the step time of the address (i + 2), the gate time of the address (i + 3) and the velocity of the address (i + 4) are set to RA.
It reads from M3 (step T5), and outputs a tone generation start instruction to the tone generator 9 together with the read note information (step T6). When a tone generation start instruction is output to the tone generator circuit 9 together with the note information, the tone generator circuit 9 generates the tone signal of the transferred scale number, and outputs the tone signal to the tone generator circuit 11 via the A / D converter 10. The musical tone of the scale number is generated.

The count of the clock counter 1 is started simultaneously with the generation of the musical tone (step T7), and whether the beat timing key has been input or whether the clock counter 1 has counted the gate time read in step T5. Is checked (steps T8 and T9). The clock counter 1 is a counter for counting a gate time and a step time. If the beat timing key is turned on before the clock counter 1 counts the gate time, step expansion processing is performed (step T1).
0), when the clock counter 1 counts the gate time before the beat timing key is turned on, a tone generation stop instruction is output to the tone generator circuit 9 to stop generation of a musical tone (step T11). That is, regardless of the presence or absence of the input of the beat timing key, the note pronunciation performs only the gate time (sounding time) time when entered in the note information input process, when pronounced by a gate time period, beat Ta
Timing or key is turned on, the clock counter 1 checks whether it has counted the step time (step T12, Tl3). When the beat timing key is turned on, step expansion processing is performed (step T14).

The step expansion processing in steps T10 and T14 is the same processing, and depends on whether the beat timing key is turned on before or after the elapse of the gate time. The only difference is whether the step expansion processing is performed or the step processing is performed in step T14. This step expansion process
As shown in FIG. 7, this is a process for calculating and storing a tempo, a step time, and a gate time.

When the process proceeds to step expansion processing, first, it is checked whether or not the counter 2 is 0 (step Pl).
At first, since the counter 2 is not 0, the counter P2
Then, the count value of the counter 2 is set as a variable S2, and the tempo T is calculated (step P
3). The process of calculating the tempo T is as shown in FIG.
The processing is performed by performing the arithmetic processing of the following equation (1). T = (60 × b) / (S2 × tc) Here, b is a constant that sets how many beat timing keys are input within one beat. When the calculation process of the tempo T is completed, a process of storing the calculated tempo T in the RAM 3 is performed (step P4). The process of storing the tempo T is a process of writing the calculated tempo T to the address i of the RAM 3 as shown in FIG. 9, and this tempo T is used as correction information for automatic performance as described later. .

After completing the process of storing the tempo T,
The calculation and storage processing of the step time S is performed (step P5). As shown in FIG. 10, the process of calculating and storing the step time S is a process of performing an arithmetic process of the following equation (2) and writing the calculation result to the address (i + 2) of the RAM 3. S = (S1 × St) / S2 When the calculation and storage processing of the step time S is completed, the calculation and storage processing of the gate time G is performed (step P6). As shown in FIG. 11, the calculation and storage processing of the gate time G is processing of performing the calculation processing of the following equation (3) and writing the calculation result to the address (i + 3) of the RAM 3. G = (Gl × S) / Sl

When the calculation and storage processing of the gate time G is completed, it is checked whether or not the variable j indicating the number of notes in the beat is 0 (step P7). Initially, step T2 in FIG.
Is set to 0, the variable k is set to 1, and the flag is set to 1.
And the counter 2 is set to 0, the counting of the counter 2 is started, and the step processing ends (step P8,
P9). When the first step expansion processing is completed, FIG.
Returning to the beat timing setting process, when the gate time and the step time have elapsed, the variable i is incremented by 5 (i + 5), and it is checked whether or not there is data after the address i (steps T15 and T16). Since the first data is currently being processed, if there is still data after address i, it is checked whether the flag is 1 (step T17). Now that the beat timing key has been input and step development processing has been performed, FIG.
In step P8, the flag is set to 1. Therefore, the flag is set to 0 without performing the increment processing of the variable j, and the process proceeds to step T5,
Similarly, note information at the next address is read, sound generation processing is performed, and counting by the clock counter 1 is started (steps T5, T6, T7).

It is checked whether the beat timing key has been turned on and whether the gate time and the step time have elapsed while performing the sound generation processing (steps T8, T9, T1).
2, T13). Now, as shown in FIG.
Assuming that there are two minute notes, the gate time elapses and the sound generation stops without the beat timing key being turned on. Further, the step time elapses, and the process shifts to step T15 without performing the step expanding process. In step T15, the address is incremented by 5 and it is checked whether or not there is data after address i (step T16). In FIG. 8, since there is an eighth note, it is checked whether the flag is 1 (step T1).
7) Since the flag has been set to 0 in step T19 of the previous process, the variable j is incremented by 1 in step T18, and the flag is set to 0 in step T19.

When the setting of the flag is completed, step T
In step 5, the next note information is read out, and the beat timing key is checked, and the passage of the step time and the gate time are checked while the sound generation process is performed (steps T8, T9, T12, and T18). When the gate time has elapsed, the sound generation is stopped, and when the beat timing key is turned on, the step development processing shown in FIGS. 7 to 11 is performed.

In this step expansion processing, the processing of calculating and storing the tempo T, the step time S and the gate time G is similarly performed. Now, since there are two notes in one beat, first, in the tempo rise / store process, step time rise / store process, and gate time calculation / store process of one time, two beats in one beat are used. Perform the processing for the note. Even if the processing for the second note is completed, there are two notes in one beat, and step P18 in FIG.
In step P7 of FIG. 7, the variable j is no longer 0. Accordingly, the process proceeds to step P10, in which the variable j is decremented by 1 and the variable k is decremented by 5, and then the step time of the address (k + 2) and the gate time of the address (k + 3) are read (step Pll). The step time and gate time are 1
This is the first note in the beat, and for this note, the process of storing the tempo T, the process of calculating and storing the step time S, and the process of calculating and storing the gate time G are performed (steps P4, P5, P6). When the process of storing the tempo T, the process of calculating and storing the step time S, and the process of calculating and storing the gate time G for all the notes in one beat are performed, the variable j is set to 0 in Step P7. So
The variable k is set to 1, the flag is set to 1, and the counter 2 is set to 0 (step P8), the counting of the counter 2 is started (step P9), and the process returns to the beat timing setting process of FIG. When there are three or more notes in one beat, the above-described step expansion processing is performed by the number of notes.

When the above processing is sequentially performed on each note information written in the RAM 3, at step T16 in FIG.
There is no data after the address i, and the beat timing setting process is completed. The above-mentioned beat timing setting process is a process of correcting each note to an accurately detectable error range when outputting note information of a song for automatic performance input by a real-time input method as a musical score. Is performed.

As shown in FIG. 12, in the note information input process, the step time input by the keyboard 7 is set to Sl.
If a, and a step time entered by beat timing key in beat timing setting process and S2, the beat data
Step time S2, which is input by the timing key is for automatic playing apparatus 1 is input as the step time which can be accurately determined notes. Here, assuming that a player who inputs a song for automatic performance sets 48 as a quarter note step time, the automatic performance device 1 adopts this 48 when inputting a song for automatic performance. This is the time to count 48 clocks (reference clocks). Assuming that the cycle of the reference clock is tc and the number of steps of the quarter note (base time) is St, the length of the quarter note is St × tc, and the length of the quarter note is automatically played. Is the regular length of.

At this time, the tempo Ts is Ts = (the number of quarter notes generated in one second) × 60 = 60 × 1 / (St × t
c). This is because tempo is expressed as the number of quarter notes played per minute. Here, assuming that a song is input in real time and tc is not changed, assuming that the actual tempo input in real time is Tr, the tempo Tr by real time input is Tr = 6.
0 / (S1 × tc).

However, the step time Sl of each note of the tune inputted by the real-time input has a slightly different value centering on the set number of steps of the quarter note St. In some cases, it is not possible to detect the note length of each note input by real-time input. Therefore, the above-described beat timing setting process corrects the value by which the automatic musical instrument 1 can accurately detect the note length while playing the input tune and ticking the beat accordingly. In the embodiment, the length of one beat is set to a quarter note (b =
Since 1) is set, the timing at which a quarter note is generated is ticked, and the interval is set as S2.

Based on the interval S2 input in the beat timing setting process, the step time and the gate time input by the real-time input are corrected by the above equations (2) and (3), and are corrected as the step time S and the gate time G. The bottom of the RAM 3 is rewritten. Therefore, beat tie
The step time S and the gate time G of the RAM 3 rewritten by the timing setting process are the step time and the gate time that can be accurately recognized by the automatic performance device 1. The score display can be performed accurately by the gate time G.

Next, a display process for outputting note information stored in the RAM 3 as a musical score in a visible state will be described. The display process is performed by turning on the display key of the switch unit 8. When the display key is turned on, the CPU 2 sets the start address A of the note information area as a variable i for specifying the address of the RAM 3 (step Rl), as shown in FIG.
The scale number of 1), the step time of the address (i + 2) and the gate time of the address (i + 3) are read (step R2). Based on this note information, the CPU 2
The score is displayed on the display unit 5 by a normal score output method (step R3). Next, (i + 5) is set as a variable i (step R4), and it is checked whether or not data exists after the set address i (step R5). When there is data after the address i, it is determined that note information not yet displayed as a musical score exists in the RAM 3, and
Returning to step R2, note information is similarly read from the RAM 3 and displayed as a musical score (steps R2, R2).
3). In step R5, when there is no data after the address i, it is determined that there is no note information that is not displayed in the RAM 3, and the musical score display processing ends.

In the musical score display processing, the scale number, the step time S and the gate time G, particularly the step time S and the gate time G, as the note information stored in the RAM 3, are stored in the beat timing setting processing as described above. The CPU 2 can accurately determine the note length of each note based on the step time and the gate time, and can accurately display the score of the music for automatic performance.

Next, the automatic performance process will be described with reference to FIG. To perform an automatic performance, the reproduction key of the switch section 8 is turned on. When the reproduction key is turned on, the CPU 2 first sets a variable i indicating the address of the RAM 3 to the head address A of the note information area (step Ql) as shown in FIG. (Step Q2). The scale number of the address (i + 1), the step time S of the address (i + 2), the gate time G of the address (i + 3), and the velocity of the address (i + 4) are read out (step Q3), and the tone generator circuit 8 is provided based on the read note information. A pronunciation start instruction is output (step Q4). Sound source circuit 8
When a tone generation start instruction is issued, the tone generator generates a tone signal of the transferred scale number, and generates a corresponding tone through the D / A converter 9 and the tone generation circuit 10. At the same time as the generation of the musical tone, the counting of the clock is started by the counter (step Q5), and it is checked whether or not the counted number of the clock coincides with the gate time G (step Q6). The gate time G, that is, the clock used to measure the tone generation time is the clock set as the tempo T of the note in step Q2 as described above. When the count number reaches the gate time G, a sound generation stop instruction is output to the tone generator circuit 8 (step Q7), and the sound generation of the musical tone being sounded is stopped.

Next, it is checked whether or not the counter has counted the step time S (step Q8). When the counter has counted the step time 8, it is determined that the time of the home note length has elapsed, and the variable for specifying the address is determined. i
Is set to (i + 5), and the counter is set to 0 (step Q9). In the above processing, the sound generation processing for one note has been completed, and it is checked whether or not there is data after the address set in step Q9, and it is checked whether or not there is note information which has not been sounded in the RAM 8 ( Step Q10).

If there is data after the address (i + 1), it is determined that there is note information that has not yet been sounded in the RAM 3, and the process returns to step Q2 to change the clock to a value corresponding to the tempo T of the address set in step Q9. Set. Similarly, based on the clock set for each note, the sound is generated while counting the sounding time, and when the sounding is completed, the note length is counted. As described above, since a clock having a value corresponding to the tempo T set in the above-described beat timing setting process is employed as a clock for counting the sounding time and the note length of each note for each note, the beat timing setting process is performed. The automatic performance can be automatically performed by correcting the step time and the gate time corrected to values recognizable by the automatic performance device 1 into the step time and the gate time when input by real time input.

That is, the step time and the gate time input by the real-time input in the beat timing setting process are corrected to the step time and the gate time that can be recognized by the automatic performance device 1 and stored in the RAM 8. If the step time and the gate time stored in the RAM 3 were read out as they were and played with the reference clock tc, the tempo Tt during automatic performance
Is equal to the base time Ts as shown in the following equation, and unlike the tempo Tr at the time of real-time input, the performance lacks in musicality. Tt == 60 / (St × tc) = 60 / (St × tc) = Ts ≠ Tr Therefore, in order to make the tempo Tt of the automatic performance the same as the tempo Tr at the time of real-time input, a clock is provided for each note to be played. The tempo T stored in the RAM 3 as the correction information in the beat timing setting process is adopted.

That is, assuming that the clock for automatic performance is tc2 and the step time corrected in the beat timing setting process is S, the tempo Tt for automatic performance is changed to the tempo Tr for real-time input when the following relationship is satisfied. , And the performance can be performed in the same state as at the time of real-time input. tc2 × S == tc × Sl At this time, the tempo Tt at the time of the automatic performance is found to be equal to the tempo Tr at the time of the real-time input from the following equation. Tt = 60 / (S × tc2) = 60 / (S × S1 × tc / S) = 60 / (S1 × tc) = Tr And tc2 used here is tc2 = (S1
× tc) / S = (S2 × tc) / St, and if only S2 is known, tC2 can be obtained. So, beat Thailand
In the trimming setting process, T = 60b /
(S2 × tc) is obtained and written for each note in the RAM 3.

Therefore, R as note information storage means
While the storage capacity of the AM3 is reduced, each note can be reproduced in a state where the user has input it by real-time input, and a natural and musically rich automatic performance can be performed. In the above-described embodiment, in the beat timing setting process, the step time and the gate time as the note information are rewritten from the values at the time of real-time input to the values suitable for the musical score display. is not. For example, a memory area for storing only tempo data for each note is set, and the step time and the gate time are stored as they are at the time of real-time input, and the tempo data is stored in this memory area for each note. During the musical score display processing, the step time and the gate time at the time of real-time input may be played and stored as values of correction information for correcting to a value suitable for musical score display.

In the above-described musical score output processing, the musical score is displayed and output on the display unit 5, but may be recorded and output on paper or the like.

[0045]

According to the first aspect of the present invention, it is possible to correct inaccurate note information inputted by a human playing using the note information input means into accurate note information. Music output can be performed. In addition, the corrected note information can be converted into the note information at the time of performance input and generated as a musical tone, thereby reducing the storage capacity of the storage means for storing the note information, and realizing an automatic performance that is natural and rich in music. Can be performed.

According to the second aspect of the present invention, it is possible to input the music information to be automatically played by the keyboard, so that the music information of the music to be automatically played can be input in a natural state. A rich automatic performance can be performed.

According to the third aspect of the present invention, note data can be inputted as note information because a note scale, a note length, a gate time as an occurrence time of each note, and velocity data for controlling a sound intensity can be input. More detailed information can be stored as information, and a more natural and musically rich automatic performance can be performed.

According to the fourth aspect of the present invention, the beat timing
It is possible to correct the note length of the note information stored in the note information storage unit based on the ring storage means stored beat timing information, personality is appropriately corrected important role note length in the performance Thus, more accurate musical score information can be output, and more natural and musically rich automatic performance can be performed.

According to the fifth aspect of the present invention, the beat timing
It is possible to correct the note length and gate time of note information stored in the note information storage unit based on the stored pulse timing information on grayed storage unit, it can be corrected more song information, and more it is possible to output a more accurate score, a nature that would more rather, it is possible to perform the music of rich automatic performance.

[Brief description of the drawings]

FIG. 1 is a block diagram of an automatic performance device according to each invention of the present application.

FIG. 2 is a view showing a memory map formed in a RAM shown in FIG. 1;

FIG. 3 is a diagram showing an example of a musical score of a music piece for automatic performance.

FIG. 4 is a diagram showing a scale number, a step time, a gate time, and a velocity of the musical example of FIG. 3;

FIG. 5 is a flowchart showing input processing of notes of a music piece for automatic performance.

FIG. 6 is a flowchart showing a beat timing setting process.

FIG. 7 is a flowchart showing the step expansion processing of FIG. 6;

FIG. 8 is a flowchart showing a tempo calculation process in the step expansion process of FIG. 7;

FIG. 9 is a flowchart showing a tempo storing process in the step expanding process of FIG. 7;

FIG. 10 is a flowchart showing a step time calculation / storage process in the step expansion process of FIG. 7;

FIG. 11 is a flowchart showing gate time calculation / storage processing in the step expansion processing of FIG. 7;

FIG. 12 is an explanatory diagram of a beat timing setting process.

FIG. 13 is a flowchart showing a musical score display process.

FIG. 14 is a flowchart showing automatic performance processing.

FIG. 15 is a memory map of a conventional memory for storing note information for automatic performance.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automatic performance apparatus 2 CPU 8 RAM 4 ROM 5 Display part 6 Clock generation circuit 7 Keyboard 8 Switch part 9 Sound source circuit 10 D / A converter 11 Sound generation circuit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G10H 1/00 101-102 G10H 1/36-1/42

Claims (5)

(57) [Claims] 1. A musical note information input means for inputting a series of musical note information constituting musical piece information by playing using a performance operator, and each musical note information inputted from the musical note information input means is sequentially stored. and note information storage unit, and beat timing input means for inputting the beat timing of the music inputted by the note information input means, said beat Thailand note information stored in the note information storage unit
A correction unit that corrects based on the beat timing information input from the input unit, and outputs correction information for converting the corrected note information into note information before correction. A storage control unit for rewriting the corrected note information with the note information stored in the note information storage unit and storing the corrected information, and storing the correction information in the note information storage unit for each note; and the storage control unit. A musical tone generating means for generating a musical tone based on the rewritten note information and correction information of the musical note information storage means, and musical score information based on the musical note information of the musical note information storage means rewritten by the storage control means can be visually recognized. An automatic performance device, comprising: a musical score output means for outputting in a proper state. 2. The automatic performance device according to claim 1, wherein said note information input means is a keyboard. 3. The musical note information input means is capable of inputting, as musical note information, a scale, a musical note length, a gate time as a generation time of each musical note, and velocity data for controlling a sound intensity. The automatic performance device according to claim 1 or 2. 4. The apparatus according to claim 1, wherein said correction means corrects the note length of the note information stored in said note information storage means based on beat timing information inputted from said beat timing input means. An automatic performance device according to claim 2 or claim 3. 5. The apparatus according to claim 1, wherein said correction means corrects a note length and a gate time of the note information stored in said note information storage means based on beat timing information input from said beat timing input means. Claim 1 and Claim 2
Or the automatic performance device according to claim 3.