JP2006078656A - System for generating fingering information, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique for quickly generating appropriate fingering information, in response to the performance content indicated by performance information. <P>SOLUTION: In a step SB1, a fingering information generating system executes successive generating processings to generate fingering information. Fingering indicated in the generated fingering information corrects an object, in which the cost corrected in the execution of cost correction processing of the step SB7 is larger than a constant THRCOST that is the threshold, by calculating in execution of designated sound cost calculation processing of the step SB6 without falling under inhibition items, while successively modifying target note, by repeatedly executing the processing loop formed in steps SB3-SB9, until the decision in step SB3 becomes "YES". Thereby, the fingering information generated is corrected, as needed, so that it becomes more appropriate. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a technique for generating fingering information indicating fingering when a musical piece is operated by operating a group of performance operators provided in a musical instrument.

  Currently, many keyboard instruments are equipped with a navigation function that sequentially notifies the user (performer) of keys to be pressed (operated) as the performance progresses. However, many users who use the navigation function are technically immature, and even if the navigation function can know the key to be pressed next, it does not know with which finger the key should be pressed. This is the actual situation. For this reason, a keyboard instrument equipped with a performance display device for displaying a finger to be used for pressing a key has been commercialized. By using the performance operation display device, it is possible to perform the performance while taking into account how to carry the finger, so that the user can perform more efficient practice (learning).

  The fingering information generation device refers to performance information indicating the performance content of a music piece, and carries a finger when playing the music piece by operating a keyboard (a group of performance operators) provided on the musical instrument. Fingering information indicating fingering is automatically generated. Usually, the performance operation display device refers to fingering information, and sequentially teaches the finger to be used to press the key to be pressed, the timing to release the finger, etc., as the performance progresses It is supposed to be. As a conventional fingering information generation device, for example, there is one described in Patent Document 1.

  In the conventional fingering information generating device described in Patent Document 1, as a finger to be used for pressing a key to be pressed, a cost indicating a difficulty level for pressing the key is calculated for each finger, Fingers that can be pressed relatively easily are assigned. Considering the keys that should be pressed after that key, it is possible to play smoothly. Also, by assigning fingers in an appropriate manner for each phrase by judging phrases by focusing on the structure (type of performance content) such as chords and fingering (performance) methods such as finger dive, etc. I am letting you.

  By focusing on the cost, the structure of the music (the type of performance content), and the fingering method, fingering information that is easier (appropriate) for the user can be generated. In the conventional fingering information generation device, fingering information is generated while taking all of them into consideration. For this reason, there is a problem that it always takes a long time to generate fingering information regardless of the performance content indicated by the performance information.

Some music pieces can generate fingering information that is optimal or close to that without considering its structure and the like. It would be desirable to be able to generate fingering information for such music more quickly so that the user can use it more comfortably.
JP 2001-331173 A

  An object of the present invention is to provide a technique for enabling generation of more appropriate fingering information more quickly according to the performance content indicated by the performance information.

  Both the fingering information generation devices according to the first and second aspects of the present invention indicate fingering that is a finger carry when playing a musical piece by operating a group of performance operators provided in a musical instrument. On the premise that fingering information is generated, each has the following means.

  The fingering information generating device according to the first aspect includes a performance information acquisition means for acquiring performance information indicating the performance content of a music, and the performance information acquired by the performance information acquisition means. The fingering information generating means for generating the fingering information of the music shown, and the fingering information generated by the fingering information generating means are referred to, and the difficulty in performing the fingering indicated by the fingering information is calculated. And a fingering information correcting unit for correcting the fingering information generated by the fingering information generating unit based on the difficulty level calculated by the difficulty calculating unit.

  The difficulty level calculation means refers to the performance information and virtually divides the performance information into one or more partial performance information, and the performance content represented by the partial performance information and the connection of the partial performance information. It is desirable to calculate the difficulty level by paying attention to at least one of them. The performance content represented by the partial performance information includes at least one of the difference in the sound generation start timing between the sounds to be generated, the number of sounds to be generated simultaneously, the ratio of the sound generation period overlapping between the sounds, and the presence or absence of jumping progress. It is desirable to pay attention. Further, the difficulty level calculating means calculates the difficulty level by excluding the fingering satisfying a predetermined condition among the fingerings indicated by the fingering information, and the fingering information correcting means includes the difficulty level calculating means. It is desirable to correct the fingering for calculating

  The fingering information generating apparatus according to the second aspect includes a performance information acquisition means for acquiring performance information indicating the performance content of a music piece, and the performance information acquired by the performance information acquisition means. The fingering information generating means for generating fingering information of the music indicated, and the fingering to be corrected in the fingering indicated by the fingering information with reference to the fingering information generated by the fingering information generating means And a fingering information correcting unit for correcting the fingering extracted by the fingering extracting unit.

  Each of the programs according to the first and second aspects of the present invention has a function for realizing the means included in the fingering information generating device according to the first and second aspects.

  The present invention refers to the performance information, generates fingering information of the music whose performance information indicates the performance content, and refers to the generated fingering information to perform the fingering indicated by the fingering information. The degree of difficulty is calculated, and the generated fingering information is corrected based on the calculated degree of difficulty.

  Since the fingering to be corrected is extracted and corrected based on the degree of difficulty in the fingering indicated by the generated fingering information, a relatively simple algorithm is used to generate the fingering information be able to. Therefore, the music (performance information) that can generate fingering information that is optimal or close to that with a simple algorithm can be quickly generated. Even for music that is not so, it is possible to obtain fingering information that is optimal or close to it by correction after generation. As a result, as a result, the fingering information that is optimal or close to that is surely obtained in the minimum necessary time.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram for explaining the configuration of an electronic musical instrument equipped with a fingering information generating apparatus according to this embodiment.

  As shown in FIG. 1, the electronic musical instrument includes a CPU 1 that controls the entire musical instrument, a ROM 2 that stores programs executed by the CPU 1 and various control data, a RAM 3 that the CPU 1 uses for work, and various switches. An input unit 4 having an operator, a display unit 5 that is, for example, a liquid crystal display device, an external storage device 6 that can be used for storing various data, and a keyboard 7 that is a group of performance operators to be subjected to performance operations And a sound system 8 for generating musical sounds in accordance with instructions from the CPU 1.

  The external storage device 6 accesses, for example, a removable recording medium. As an operator related to generation of fingering information provided in the input unit 4, a music designation switch for designating a music (performance information) for which fingering information is to be generated, and instructing generation of fingering information For example, a fingering generation switch is provided.

  The performance data (information) that is the target of fingering information generation is selected from those that can be accessed by the external storage device 6 by, for example, operating a song designation switch. The CPU 1 causes the external storage device 6 to read the performance data selected by the user and stores it in the RAM 3.

  FIG. 2 is a diagram for explaining the configuration of performance data stored in the RAM 3 for generating fingering information. The performance data indicates fingering (a finger assigned to the key to be pressed) in units of notes, in addition to data indicating the performance of the song in units of notes (hereinafter referred to as “performance musical data”). Data (hereinafter referred to as “finger note data”) and data for generating fingering note data (hereinafter referred to as “note data”) are arranged in the order in which the notes are played (pronunciation). ing. The note data corresponds to “ME” indicated in parentheses in FIG. The numerical value in the parenthesis is an index (value) for designating note data. Thereafter, “ME” is added to the note data for which the index is known, followed by a numerical value indicating the index or a symbol representing a variable in parentheses, for example, “note data ME [0]”. The note data for which the index is not known is simply described with “ME” attached. The same applies to other cases.

  The note data ME corresponds to the sounding start time denoted by “time”, the sounding duration denoted by “gate”, the sounding pitch (note number) denoted by “pitch”, and the sounding pitch denoted by “posx”. Key coordinates of key, pitch increase / decrease tendency indicated as “tend”, number of pitch changes until reaching the next extreme point indicated as “tendstep”, fingering number indicated as “fig” (to be used for pressing the key) Finger number), “cost” fingering cost (difficulty in pressing the key), “np” notation flag, “so” notation, “hmny” ”Chord flag,“ arp ”, distributed chord flag,“ nhtop ”, next note group start note index,“ nhtail ”, next note group end note index,“ phto ” Top sound index "the head sound index note groups previous notation, and" phtail "and notes group previous notation, has a configuration having a respective data.

  As data not shown, there are a part indicating whether the finger to be used for pressing the key is the right hand, a velocity indicating the strength at the time of pressing the key, and the like. However, it is omitted here for convenience of explanation. The performance data used in the following description is assumed to be created for the right-hand part.

  The data posx expresses the keyboard coordinates with a value that is changed by two for each white key, with a key assigned 60 note numbers in the MIDI format as a reference (0). By changing in such a manner, the white key is an even number and the black key is an odd number. This is because there is a difference in the position in the cross direction of the longitudinal direction of the keyboard 7 between the white key and the black key.

  The pitch increase / decrease tendency is expressed as 0 for a note corresponding to the point where the increase / decrease changes, ± 1 for a note having the same pitch (pitch) as the previous note, and ± 2 for a note different from the pitch of the previous note. Yes. As for the sign, + indicates that the pitch is increasing, and “−” indicates that the pitch is decreasing. The number of pitch changes until the next pole is reached is the number of notes having a pitch different from that of the next note existing between the corresponding note and the note at the next pole.

  As the fingering numbers, 0 is assigned to the thumb, 1 is assigned to the index finger, 2 is assigned to the middle finger, 3 is assigned to the ring finger, and 4 is assigned to the little finger. The prohibited matter flag is a flag indicating whether or not the set fingering satisfies a condition defined as a prohibited matter. If the condition is satisfied, 1 is set, otherwise 0 is set.

  The number of pronunciations set as the data so is the number of other notes that are sounding at the sounding start time of the corresponding note, or the number of other notes that start sounding before the sounding end time (= time + gate). In order to distinguish these numbers, the latter is represented by a negative value.

  The chord flag indicates whether the corresponding note is a constituent sound of a chord. A value indicating the position from the head sound is set to 0 if it is not a constituent sound and a positive value if it is a constituent sound. The initial value of the value indicating the position is 1. The same applies to the distributed constituent sound flag.

  In the present embodiment, the entire performance indicated by the performance data is virtually divided into a group of notes constituting a chord or distributed chord, and a single note existing between these notes. Various indexes set as the data nhtop, nhtail, phtop, and phtail are obtained when such division is performed. In the data nhtop, when the next note group does not exist, −1 is set.

  The data time, gate, and pitch are data constituting performance data read from the external storage device 6 or generated from the data, and correspond to performance note data. When the performance note data is stored in the RAM 3, the total number obtained by counting the number is substituted into the variable ev_max. The data posx and fig correspond to fingering note data. The others are data for generating fingering note data.

  Hereinafter, the operation of the electronic musical instrument will be described in detail with reference to flowcharts of various processes illustrated in FIGS. 3 to 8 and 10 to 21 and an explanatory diagram illustrated in FIG. 9. Each process shown in these drawings is realized by the CPU 1 executing a program stored in the ROM 2.

FIG. 3 is a flowchart of the entire process. First, the entire process will be described in detail with reference to FIG.
When the power is turned on, first, an initial process is executed in step SA1 to set the electronic musical instrument to a predetermined state. In the subsequent step SA2, it is determined whether or not the music designation switch is turned on. If a signal indicating that is received from the input unit 4 because the user has operated the switch, the determination is YES, and in step SA3, a song (performance data) designated by the user's operation on the input unit 4 is determined. ) Is executed from the external storage device 6, and then the process proceeds to step SA4. On the other hand, if not, the determination is no, and the process of step SA4 is then executed.

  By taking in the performance data at step SA3, the performance data is stored in the RAM 3 in the configuration shown in FIG. For this purpose, the number of note data ME is counted, and a value obtained by subtracting 1 from the count value is substituted into a variable ev_max. Also, the structure of the music is analyzed, and the data time, gate, pitch, posx, tend, tendstep, so, hmny, arp, nhtop, nhtail, phtop, and phtail are set according to the analysis result. I do. Predetermined values are set as initial values for the data fig, cost, and np. Since the structural analysis that can set these various data is a well-known technique, a detailed description is omitted here.

  In step SA4, it is determined whether or not the fingering generation switch is turned on. If the switch is operated by the user, the determination is YES, and after performing fingering generation processing for generating fingering information in step SA5, the process proceeds to step SA6. If not, the process proceeds to step SA6.

  In step SA6, other switch processing for responding to operations on other switches provided in the input unit 4 is executed. In the subsequent step SA7, a keyboard process for generating a musical tone in accordance with a user operation on the keyboard 7 is executed. In the next step SA8, the user is allowed to designate a song, and an automatic performance process for realizing the automatic performance of the designated song is executed. Thereafter, display processing for displaying information to be displayed on the display unit 5 in step SA9, and other processing in step SA10 are executed, and then the process returns to step SA2.

FIG. 4 is a flowchart of the fingering generation process executed as step SA5. Next, the generation process will be described in detail with reference to FIG.
First, in step SB1, sequential generation processing for generating fingering information (fingering note data) for each note is executed. In the next step SB2, 1 is substituted into the variable me. In the next step SB3, it is determined whether or not the value of the variable me is equal to the value of the variable ev_max. If these values match, the determination is yes, and the series of processing ends here. Otherwise, the determination is no and the process moves to step SB4.

  In step SB4, whether or not the prohibited condition is satisfied by paying attention to the note data ME specified by the value of the variable me (which is simply expressed as “note” because it corresponds to a note to be generated in the performance). Execute prohibited matter search processing for searching (confirming) whether or not. After the execution, the process proceeds to step SB5, where the data np in the note data ME specified by the value of the variable me (denoted as “ME [me] .np” in the figure. The notation is also used hereinafter). It is determined whether 0 is set. If it is determined that it does not correspond to the prohibited matter, 0 is set as the data np. Therefore, the determination is YES and the process proceeds to Step SB6. Otherwise, the determination is NO and the variable me is determined in Step SB10. After the value is incremented, the process returns to step SB3.

In steps SB6 to SB9, a process for further reducing the cost according to the cost of the fingering is performed on the fingering determined not to fall under the prohibited items.
First, in step SB6, a designated sound cost calculation process for calculating the cost of a note (designated sound) designated by the value of the variable me is executed. In subsequent step SB7, a cost correction process for correcting the cost calculated by executing the calculation process is executed. In step SB8 to be executed next, it is determined whether or not the cost of the designated sound (indicated as “ME [me] .cost” in the figure) is larger than a constant THRCOST defined as a threshold value. If the value is larger than the constant THRCOST, the determination is YES, and after performing the fingering correction process for correcting the fingering in step SB9, the process proceeds to step SB10. Otherwise, the determination is no and the process of step SB10 is next executed.

  Although the detailed description of the fingering correction in the fingering correction process is omitted, for example, the section to be processed is determined in consideration of the parts before and after the specified sound, and the performance in the determined section is performed. This is done by extracting the combination with the lowest cost from all possible fingering combinations. This ensures that the optimal fingering for the specified sound is set at the time of correction.

  In this way, in the present embodiment, only the fingering whose corrected cost is not within the allowable range set as the constant THRCOST is corrected, and correction is performed so as to be more appropriate. Yes. Thereby, the fingering information generated in step SB1 is corrected as needed in units of fingering (notes).

  By making corrections as necessary, it is possible to employ a relatively simple algorithm for generating fingering information in the sequential generation process. For this reason, music (performance data) that can generate fingering information that is optimal or close to that with a simple algorithm can be generated quickly. Even for music that is not so, it is possible to obtain fingering information that is optimal or close to that by correction as necessary after generation.

Hereinafter, a subroutine process called directly or indirectly in the fingering generation process will be described in detail.
5 and 6 are flowcharts of the prohibited matter search process executed as step SB4. As the subroutine processing, first, the search processing will be described in detail with reference to FIG. 5 and FIG.

  For example, pressing a black key on the keyboard 7 is more difficult than other fingers because of the length of the thumb and little finger, the position of the hand, and the like. The degree of difficulty (cost) of successive key presses using the same finger changes according to the time interval from key release to key press, the distance between keys to be pressed (pitch (pitch) difference), and the like. When the time interval is short and the distance between the keys is large, the key depression is impossible or extremely difficult. There are other fingerings that are impossible or extremely difficult. For this reason, in the prohibited matter search process, it is confirmed by searching whether the fingering assigned to the designated sound does not correspond to any of the conditions (prohibited items) considered impossible or extremely difficult. It is like that.

  First, in step SD1, data is set and a value is assigned to a variable. Specifically, ME [me]. np is set to 0, and for variables, ME [me]. fig, ME [me]. posx, the remainder of dividing the value of the variable p by 2 into the variable bw (= p% 2), ME [me + 1]. fig, ME [me + 1]. posx, ME [me-1]. fig and the variable pp are ME [me-1]. posx is substituted respectively. Then, the process proceeds to step SD2.

  In step SD2, it is determined whether the value of the variable p is 0 or 4 and the value of the variable bw is 1. 0 and 4 as the value of the variable p represent the thumb and little finger, and 1 as the value of the variable bw represents that the key to be pressed is a black key. Therefore, if the key for generating the designated sound is not a black key, or if neither the thumb nor the little finger is set as the key press even if it is a black key, the determination is no and the process returns to step SD5. Transition. If not, that is, if the key is a black key and a thumb or little finger is set as the key pressed, the determination is yes and the process moves to step SD3.

  In step SD3, it is determined whether the absolute value of the value obtained by subtracting the value of the variable np from the value of the variable p is less than 2, or whether the absolute value of the value obtained by subtracting the value of the variable pp from the value of the variable p is less than 2. . If any of the pitch differences between the designated sound and the preceding note and between the designated sound and the next note is less than 2 in absolute value, the determination is YES, and it is determined that the prohibited items are satisfied, and step SD4 And ME [me]. After 1 is set as np, a series of processing ends. Otherwise, the determination is no and the process moves to step SD5.

  In step SD5, ME [me]. hmny is not 0 and ME [me-1]. It is determined whether hmny is not zero. When two adjacent notes specified by a variable me and a value obtained by subtracting 1 from the value are both chord constituent sounds, values other than 0 are set as the data hmny. If the determination is YES and the process proceeds to step SD6, otherwise, that is, if at least one of the two notes is not a chord component, the determination is NO and the process proceeds to step SD7.

  In step SD7, whether or not the absolute value of the value obtained by subtracting the value of the variable nf from the value of the variable f is 2 or less and whether the absolute value of the value obtained by subtracting the value of the variable np from the value of the variable p is greater than 6 judge. Two fingers assigned to the keys of two adjacent notes are adjacent to each other, or one finger is positioned between them, and the pitch difference between the two notes is greater than the six keys In this case, the determination is yes and the process proceeds to step SD4. As a result, fingering that must be opened to the extent that it is considered impossible is regarded as a prohibited matter. If not, that is, if the fingering is such that the key can be depressed to generate two notes depending on how the fingers are opened, the determination is no and the process moves to step SD8 in FIG.

  In step SD8 of FIG. 6, ME [me]. The value of the variable me is substituted for the absolute value of so and the variable mepoly. In the next step SD9, ME [me]. It is determined whether or not so is greater than zero. If there is another note that is sounding at the note start time specified by the value of the variable me, ME [me]. Since a value greater than 0 is set as the value of so, the determination is YES and the process proceeds to step SD10. If not, that is, if there is no such note, the determination is It becomes NO and moves to step SD17.

  In steps SD10 to SD16, a process is performed to extract a thing corresponding to the prohibited matter determined assuming that there is another note that is sounding at the sounding start time of the note specified by the value of the variable me. Is called.

  First, in step SD10, it is determined whether or not the value of the variable socnt is greater than zero. If the value is 0 or less, the determination is no, and the series of processing ends here. Otherwise, the determination is yes, and in step SD11, the value of the variable mepoly is decremented, and further ME [mepo]]. The value of time is ME [mepoly]. gate value is added, and ME [me]. The value obtained by subtracting the value of time is ME [me]. The value obtained by dividing by the value of gate (= (ME [mep]]. time + ME [mep] [gate-ME [me] .time) / ME [me] .gate) is assigned to the variable “over”, and then to step SD12. Transition. The value assigned to the variable “over” is obtained by dividing the time interval between the pronunciation end time of the note specified by the value of the variable “mepoly” and the pronunciation start time of the note specified by the value of the variable “me” by the latter pronunciation time. The value obtained by dividing the time when the former sound generation is ended after the latter sounding start time is divided by the latter sounding time.

  In step SD12, the value of the variable “over” is larger than the constant POLYRATIO, and ME [memory]. The value of time is ME [me]. It is determined whether it is less than the value of time. The constant POLYRATIO is a threshold value prepared for extracting a note in which the ratio of the period in which sound generation time overlaps between two notes exceeds a certain value. For this reason, if two notes with a certain ratio or more must be pressed at different timings, the determination is YES and the process moves to step SD13. Otherwise, the determination is NO, In step SD12A, when the variable over is larger than 0, the value of the variable socnt is decremented, and then the process returns to step SD10.

  In step SD13, ME [me]. fig, the variable f2 is ME [memory]. fig, ME [me]. The value of posx, the variable p2 is ME [memory]. The value of posx is substituted respectively. In subsequent steps SD14 to SD16, the two notes specified by the values of the variables me and meply are the notes having different pitches to be depressed using the same finger, and the thumb or the finger closer to the thumb is moved. Must be used to press the note with the larger pitch, or vice versa, the little finger or the finger closer to the little finger must be used to press the note with the smaller pitch A process for determining whether or not the item is applicable is performed. If none of the prohibited items correspond, the determination in step SD16 is finally NO and the process proceeds to step SD12A. Otherwise, the determination in any of steps SD14 to SD16 is YES, and the process proceeds to step SD4 in FIG. If one of the latter two prohibitions is applicable, the fingers cross each other when the keys corresponding to the two notes are pressed.

  In step SD17 in which the determination in step SD9 is NO and the process proceeds to ME [me]. It is determined whether so is less than zero. When there is another note that starts sounding before the note end time specified by the value of the variable me, ME [me]. Since a value less than 0 is set as the value of so, the determination is yes and the process proceeds to step SD18. If not, that is, if such a note does not exist, the determination is The answer is NO, and the series of processing ends here.

  Steps SD18 to SD24 are for extracting the ones corresponding to the prohibited items determined on the assumption that there is another note whose sounding is started before the sounding end time of the note specified by the value of the variable me. Processing is performed. The prohibition items are basically the same as those determined assuming that there is another note that is sounding at the sounding start time of the note specified by the value of the variable me. Further, the processing contents and the flow of steps SD18 to SD24 are the same as those of steps SD10 to SD16 described above. For these reasons, detailed description is omitted.

  In this way, taking into account the notes located before and after the specified sound (notes specified by the value of the variable me), the fingering set to pronounce the specified sound falls under any of the prohibited items If any of the prohibited items is satisfied, 1 is set as data np (ME [me] .np).

  FIG. 7 is a flowchart of the designated sound cost calculation process executed as step SB6 in the fingering generation process shown in FIG. Next, the calculation process will be described in detail with reference to the flowchart shown in FIG.

  First, in step SG1, the value of the variable me and the value obtained by adding 1 to the value are substituted for the variables ev1 and ev2, respectively. In the next step SG2, a cost calculation process between two sounds for calculating the cost between the designated sound and the next note is executed. In the next step SG3, the value assigned to the variable cost2ev as the cost value by executing the calculation process is set as the cost of the designated sound (ME [me] .cost ← cost2ev). Thereafter, the process proceeds to step SG4, and it is determined whether or not the set cost value is equal to the constant MAXCOST. The constant MAXCOST is set as the maximum value of cost. If the constant MAXCOST has been assigned to the variable cost2ev, the determination is yes, and the series of processing ends here. Otherwise, the determination is no and the process moves to step SG5.

  In step SG5, values are assigned to various variables. Specifically, the variable n is 0, the variable coef is 1, and the variable td is ME [ev2]. From the value of time, ME [ev1]. The value obtained by subtracting the value of time (the time interval of the sounding start time between two notes specified by the values of the variables ev1 and ev2) is substituted. In step SG6 that moves to thereafter, it is determined whether or not the value of the variable n is less than the constant MAXOS. If the value is equal to or greater than the constant MAXOS, the determination is no and the process proceeds to step SG10, and if not, the determination is yes and the process proceeds to step SG7.

  In step SG7, the value of the variable td is expressed as data diff ("TMCF [n] .diff" in the figure. This notation is also shown below) stored in the record designated by the value of the variable n in the cost correction table TMCF. It is determined whether the value is equal to or less than the value of If the value of the variable td is less than or equal to the value of the data diff, the determination is YES, and the data coef stored in the record designated by the value of the variable n of the cost correction table TMCF is stored in the variable coef (step SG9). The value of “TMCF [n] .coef”) is substituted, and after the substitution, the value obtained by multiplying the previous value by the value of the variable coef is substituted for the variable cost2ev, and then the process proceeds to step SG10. Otherwise, the determination is no, the value of variable n is incremented in step SG8, and then the process returns to step SG6.

  Here, the cost correction method performed in steps SG6 to SG9 and the cost calculation method performed in the cost calculation process between two sounds will be specifically described with reference to FIG. FIG. 9 is a diagram for explaining the data structure of a table stored in the ROM 2. FIG. 9A shows a fingering cost table, and FIG. 9B shows that of a cost correction table.

First, a cost calculation method in the cost calculation process between two sounds will be specifically described with reference to FIG.
In FIG. 9A, “bw” is the keyboard type (0 is the white key, 1 is the black key), “pm” is the pitch changing direction (0 is the increasing direction, 1 is the decreasing direction), and “fig1” is the variable ev1. The finger number of the note specified by the value of “”, “fig2” represents the finger number of the note specified by the value of the variable ev2, and “intv” represents the pitch difference between the two notes. Thereby, the table CT stores the cost of fingering under the situation according to the situation indicated by the combination of each value of the data. From this, in the cost calculation process between two sounds, those data are obtained, and the cost (value) stored in the column designated by the combination of each value when the condition for substituting the constant MAXCOST is not satisfied. Is extracted and substituted into the variable cost2ev. Since the fingering cost table CT stores cost values for each situation indicated by five values, the notation in the form of a five-dimensional array variable CT is also used.

  In the fingering cost table CT configured as described above, the time interval of the sounding start time between two sounds is not considered. The shorter the time interval, the more difficult fingering is. The cost correction in steps SG6 to SG9 is performed in order to reflect the time interval on the cost with reference to the cost correction table shown in FIG.

  In FIG. 9B, “diff” represents a time interval, and “coef” represents a coefficient set for the time interval. Thereby, the cost correction table TMCF has a configuration in which the time interval and the coefficient are stored in each record of the total number MAXOS.

  The time interval stored in the record is made shorter as the value (record number) specifying it becomes smaller. Thereby, in steps SG6 to SG9, while sequentially incrementing the value of the variable n, the record whose stored time interval is greater than or equal to the value of the variable td is identified, and the value of the data coef of the identified record is substituted into the variable coef. The value of the variable cost2ev is corrected (updated).

Returning to the explanation after step SG10 in FIG.
In step SG10, ME [ev1]. The value of time is set to ME [ev1]. gate value is added, and ME [ev2]. A value obtained by subtracting the value of time (the time interval between the note generation end time specified by the value of the variable ev1 and the note start time specified by the value of the variable ev2) is substituted into the variable over. . In the subsequent step SG11, it is determined whether or not the variable over is greater than 0 and the value of the variable td is also greater than 0. If both of these values are greater than 0, that is, if the next note of the designated sound must start sounding at a different timing before the sounding end time of the designated sound, the determination is yes and the process moves to step SG12. Otherwise, the determination is no and the process proceeds to step SG16. If the value of the variable cost2ev is larger than the constant MAXCOST, the constant MAXCOST is substituted into the variable cost2ev, and then the value is set to ME [me]. Set as cost. A series of processing is finished thereafter.

  In step SG12, the value of the variable td is set to ME [ev1]. A value obtained by multiplying the value divided by the value of gate by 100 is substituted into a variable blank. That is, the variable blank is a value indicating the ratio of the time during which the sound production time does not overlap with the next note with respect to the sound production duration time of the designated sound. In step SG13 which is shifted to after the substitution, it is determined whether or not the value of the variable blank is larger than 80. If the value is greater than 80, the determination is yes, and in step SG14, a value obtained by multiplying the value of the variable coef by 3 is substituted into the variable cost2ev. Otherwise, the determination is no, and a value obtained by adding a value obtained by multiplying the value of the variable coef by 3 to the previous value is substituted for the variable cost2ev in step SG15. After the process of step SG14 or SG15 is executed, the process proceeds to step SG16.

  In this way, the designated sound cost calculation process performs the two-sound cost calculation process as step SG2 to set the value substituted for the variable cost2ev to the time interval and sound generation time of the sound start time between two sounds. Correction is made by paying attention to the overlapping ratio.

  Next, the cost calculation process between two sounds will be described in detail with reference to the flowchart shown in FIG. In the calculation process, as described above, the cost stored in the fingering cost table CT shown in FIG. 9A is extracted and substituted into the variable cost2ev as necessary.

  First, in step SS1, ME [ev1]. fig, the variable p1 is ME [ev1]. The value of posx, the remainder of dividing the value of the variable p1 by 2 (denoted as “p1% 2” in the figure), and the variable f2 are ME [ev2]. fig, the variable p2 is ME [ev2]. The value of posx is substituted respectively. In a subsequent step SS2, it is determined whether or not the value of the variable p1 is less than the value of the variable p2. If the latter is greater than the former, the determination is yes, and in step SS3, 0 is substituted for the variable pm, and the value obtained by subtracting the value of the variable p1 from the value of the variable p2 is substituted for the variable intv. Otherwise, the determination is no, and in step SS4, 1 is assigned to the variable pm, and the value obtained by subtracting the value of the variable p2 from the value of the variable p1 is assigned to the variable intv, and then the process proceeds to step SS5.

  In step SS5, it is determined whether or not the value of the variable intv is smaller than the constant MAXINTV. The constant MAXINTV is prepared in order to determine a key interval (pitch difference) considered to be extremely difficult to press a key by fingering. Therefore, when such a pitch difference does not exist between the two notes of interest, the determination is YES, and each value of the variables bw, pm, f1, f2, and intv is changed to the variable cost2ev in step SS6. After substituting the value (denoted as “CT [bw] [pm] [f1] [f2] [intv]” in the figure) extracted from the fingering cost table CT), a series of processing ends. Otherwise, the determination is no, and after assigning the constant MAXCOST to the variable cost2ev in step SS7, the series of processing is terminated.

  In the fingering generation process shown in FIG. 4, the designated sound cost calculation process shown in FIG. 7 is executed in step SB6, and then the cost correction process is executed in the subsequent step SB7, whereby the designated sound (specified by the value of the variable me is specified). Variable ME [me]. The value assigned to cost is further corrected as necessary. Next, the cost correction process will be described in detail with reference to the flowchart shown in FIG.

  First, in step SC1, ME [me]. fig, the variable p is ME [me]. The value of posx, ME [me + 1]. fig, ME [me + 1]. 0 is assigned to the value of posx and the variables samef, passf, and excf, respectively. In the subsequent step SC2, it is determined whether or not the value of the variable f is equal to the value of the variable nf and the value of the variable p is not equal to the value of the variable np. If the designated note and the next note are notes having different pitches to be depressed using the same finger, the determination is YES, and 1 is assigned to the variable samef in step SC3, and then the process proceeds to step SC4. Otherwise, the determination is no and the process of step SC4 is next executed.

  In step SC4, it is determined whether or not the value of the variable f is 0, the value of the variable nf is greater than 0, and the value of the variable p is greater than the value of the variable np. If the finger to be used to press the specified note is the thumb, the finger to be used to press the next note is a finger other than the thumb, and the specified note has a pitch larger than the next note, the determination is YES, step In SC5, 1 is substituted into the variable passf, and then the process proceeds to Step SC6. Otherwise, that is, the finger to be used to press the specified note is not the thumb, the finger to be used to press the next note is the thumb, or the pitch of the specified note is less than or equal to the pitch of the next note. The determination is NO, and then the process proceeds to step SC6.

  In step SC6, it is determined whether or not the value of the variable f is greater than 0, the value of the variable nf is equal to 0, and the value of the variable p is smaller than the value of the variable np. If the finger to be used for pressing the specified note is a finger other than the thumb, the finger to be used for pressing the next note is the thumb, and the pitch of the specified note is smaller than the pitch of the next note, the determination is YES. Then, after substituting 2 for the variable passf in step SC7, the process proceeds to step SC8. Otherwise, that is, the finger to be used to press the specified note is the thumb, the finger to be used to press the next note is a finger other than the thumb, or the specified note is greater than the pitch of the next note. In this case, the determination is no, and then the process proceeds to step SC8.

  In step SC8, the multiplication result obtained by multiplying the value obtained by subtracting the value of the variable f from the value of the variable nf and the value obtained by subtracting the value of the variable p from the value of the variable np is smaller than 0, and the value of the variable f is 0. It is determined whether or not the value of the variable np is greater than 0. If the multiplication result is smaller than 0, the finger to be used for pressing the specified sound is a finger other than the thumb, and the finger to be used for pressing the next note is also a finger other than the thumb, the determination is YES, In step SC9, 1 is substituted into the variable excf, and then the process proceeds to step SC10. Otherwise, that is, when the multiplication result is 0 or more, the finger to be used for pressing the specified note is the thumb, or the finger to be used for pressing the next note is the thumb, the determination is No, and then the process proceeds to step SC10.

  The sign of the value obtained by subtracting the value of the variable f from the value of the variable nf and the value obtained by subtracting the value of the variable p from the value of the variable np are the same. It is located on the little finger side of the finger and the pitch of the next note is larger than the specified note, or the finger used to press the next note is located on the thumb side of that finger of the specified note, and the next note Is the case where the condition that the pitch is smaller than the specified sound is satisfied. The multiplication result becomes smaller than 0 when none of these conditions is satisfied.

  In steps SC10 to SC18, step time correction processing, polyphonic correction processing, finger crossing finger correction processing, chord vs. distributed chord correction processing, distributed chord vs. distributed chord correction processing, single tone vs. chord correction processing, chord vs. single tone correction processing, A chord pair chord correction process and a forward chord correction process are sequentially executed. After the forward chord correction process is executed as step SC18, the series of processes is terminated.

  The correction processes in steps SC10 to SC18 are processes for correcting the cost by paying attention to different contents. In the present embodiment, correction is performed so that the cost calculated in the designated sound cost calculation process is more appropriate by sequentially executing each of the correction processes.

Hereinafter, various subroutine processes executed in the cost correction process will be described in detail.
FIG. 11 is a flowchart of the step time correction process executed as step SC10. As a subroutine process executed in the cost correction process, the step time correction process will be described in detail first with reference to FIG. The step time correction process is a process for correcting the cost (ME [me] .cost) of the designated sound by paying attention to the time interval of the pronunciation start time between the designated sound and the next note.

  First, in step SE1, ME [me + 1]. From the value of time, ME [me]. A value obtained by subtracting the value of time (a time interval of the sounding start time between the designated note and the next note) is substituted, and a constant BASE is substituted for the variable coef. Here, for the sake of convenience, the value to be substituted for the variable timeint is assumed to be a value representing a time interval in ms units. The constant BASE is a value set as a reference when paying attention to the time interval.

  In step SE2 following step SE1, the time interval indicated by the value of the variable timeint is determined. Here, it is determined whether or not the time interval is greater than 2000 ms, less than 10 ms, or in between. If it is determined that the time interval is greater than 2000 ms, the process proceeds to step SE3. If it is determined to be 10 ms or less, the process proceeds to step SE4. If it is determined that the time interval is between 11 and 2000 ms, the process proceeds to step SE6.

  In step SE3, if the value of the variable samef is greater than 0, the value of the variable passf is greater than 0, or the value of the variable excf is greater than 0, then 3 if all of these values are not greater than 0, then ME [ me]. Set as cost. In the following step SE4, ME [me]. As cost, a value obtained by multiplying the value so far by a value obtained by dividing the value of the variable coef by the constant BASE is set. In the next step SE5, ME [me]. If the value of cost is greater than the constant MAXCOST, the constant MAXCOST is set to ME [me]. Set as cost. The series of processing is finished thereafter.

  In step SE6, it is determined whether the value of the variable samef is greater than 0, the value of the variable passf is greater than 0, or the value of the variable excf is greater than 0. If any of these values is greater than 0, the determination is yes and the process moves to step SE4. If not, that is, if all of these values are not greater than 0, the determination is no. Then, the process proceeds to step SE7.

In step SE7, the time interval indicated by the value of the variable timeint is determined. After that, the process of the step according to the determination result is executed.
When it is determined that the time interval is between 501 and 2000, the process proceeds to step SE4. If it is determined that the time interval is between 241 and 500, then in step SE8, a value obtained by adding 1 to the variable coef is assigned to the variable coef, and then the process proceeds to step SE4. Thereafter, similarly, when it is determined that the time interval is between 181 and 240, after substituting a value obtained by adding 2 to the variable coef in step SE9, the time interval is 121. If it is determined that the time interval is between 51 and 120, after substituting a value obtained by adding 3 to the variable coef in step SE10, the time interval is determined to be between 51 and 120. Next, in step SE11, a value obtained by adding 4 to the previous value is substituted into the variable coef. Further, in step SE13, if the values of the variables f and nf are both 3 or more, ME [me]. After setting the value obtained by adding the value of the variable coef to the previous value in cost, if it is determined that the time interval is between 11 and 50, then in step SE12 the previous value is set in the variable coef. After substituting a value obtained by adding 5 to the value and further executing the process of step SE13, the process proceeds to step SE4. Thereby, the cost is corrected according to the time interval indicated by the value of the variable timeint.

  FIG. 12 is a flowchart of the polyphonic correction process executed as step SC11 in the cost correction process shown in FIG. Next, the polyphonic correction processing will be described in detail with reference to FIG. The correction process pays attention to other notes that are sounding at the start time of the specified sound, or other notes that start sounding before the end time of the sound, and the cost of the specified sound (ME [me] .cost) It is a process which correct | amends.

  First, in step SN1, ME [me]. The absolute value of the so value is substituted, and the value of the variable me is substituted for the variable mepoly. In the subsequent step SN2, ME [me]. It is determined whether the value of so is greater than zero. If the value is 0 or less, the determination is no and the process proceeds to step SN10, and if not, the determination is yes and the process proceeds to step SN3.

  In step SN3, it is determined whether or not the value of the variable socnt is greater than zero. If the value is less than or equal to 0, the determination is no and ME [me]. cost, ME [me]. After setting a value obtained by dividing the value of so by the absolute value of 1 added, a series of processing ends. Otherwise, the determination is yes and the process moves to step SN4.

  In step SN4, a value obtained by subtracting 1 from the previous value is assigned to the variable mepoly, and ME [mep]]. The value of time is ME [mepoly]. From the value obtained by adding the gate values, ME [me]. The value of time is subtracted, and the subtraction result (the time during which the note specified by the value of the variable mepoly is sounded after the start of sounding the specified sound) is expressed as ME [me]. Substitute the value obtained by dividing by the value of gate. In step SN5 to which the process proceeds thereafter, the value of the variable over is larger than the constant POLYRATIO, and ME [memory]. The value of time is ME [me]. It is determined whether it is less than the value of time. As described above, the constant POLYRATIO is a threshold value prepared for extracting a note in which the ratio of the period in which sound generation time overlaps between two notes is equal to or greater than a certain value. The note designated by the value of the variable mepoly is the note at which the sound generation starts at or before the sound generation start time of the specified sound. For these reasons, if two notes with a certain ratio or more must be pressed at different timings, the determination is yes and the process moves to step SN6. Otherwise, the determination is no. In step SN5A, if the variable over is greater than 0, the value of the variable socnt is decremented and then the process returns to step SN3.

  At step SN6, the value of variable me is substituted for variable ev1, and the value of variable meply is substituted for variable ev2. In subsequent step SN7, a cost calculation process between two sounds is executed with attention paid to two notes designated by these values. After the execution, ME [me]. As cost, a value obtained by adding the value of variable cost2ev to the previous value is set, and then the process proceeds to step SN5A.

  In this way, in the present embodiment, when it is necessary to press two notes having a ratio of periods where the sound generation times overlap each other at a certain timing, ME [me]. Cost is corrected by updating it to a value larger than the previous value. Since the update is performed for the number of notes having overlapping pronunciation times, the larger the number, the larger the value is updated.

  In step SN10 in which the determination in step SN2 is NO and the process proceeds, ME [me]. It is determined whether the value of so is less than zero. If the value is less than 0, the determination is yes and the process proceeds to step SN11. Otherwise, the determination is no and the series of processing ends here.

  In the above steps SN3 to SN8, processing for correcting the cost of the designated sound is performed in consideration of the other notes that are sounding at the sounding start time of the designated sound (note specified by the value of the variable me). ing. In steps SN11 to SN16, a process for correcting the cost of the designated sound is performed in consideration of other notes whose pronunciation is started before the designated sound generation end time. Since the conditions for correcting the cost, the method for correcting the cost, and the like are basically the same, detailed description will be omitted.

  FIG. 13 is a flowchart of the finger passing finger correction process executed as step SC12 in the cost correction process shown in FIG. Next, the correction process will be described in detail with reference to FIG. The correction process is a process of correcting the cost (ME [me] .cost) by paying attention to a relatively advanced performance method that is necessary for pressing a designated sound, such as finger crossing or finger penetration. .

  First, in step SL1, it is determined whether or not the value of the variable passf is 1. The first means that the key of the next note is pressed by a finger other than the thumb over the thumb. From this, in the situation where the finger is passed, the determination is YES, and in step SL2, a value obtained by adding 1 to the value of the variable me in the variable mepass, and the value of the variable me in the variable mepass are respectively substituted in the step SL5. Migrate to Otherwise, the determination is no and the process moves to step SL3.

  In step SL3, it is determined whether or not the value of the variable passf is 2. The second means that the key of the next note is a situation where the thumb is passed under the other finger. From this, in the situation where finger penetration is performed, the determination is YES, and in step SL4, the value of the variable me is substituted for the variable mepass, and the value obtained by adding 1 to the value of the variable me is substituted for the variable mepass. Migrate to Otherwise, the determination is no and the series of processing ends here.

  In step SL5, the finger over finger penetration basic correction process for correcting the cost in consideration of the arrangement of notes in the performance section before the specified sound is executed. In the next step SL6, a step time / jump progress correction process for correcting the cost in consideration of the time interval (step time) of the sound generation start time is executed. Thereafter, the process proceeds to step SL7, where ME [me]. If the cost value is greater than the constant MAXCOST, the constant MAXCOST is set. If the value is less than 0, 0 is set to ME [me]. It is updated by newly setting as cost. The series of processing is finished thereafter.

Here, each subroutine process executed as steps SL5 and SL6 will be described in detail with reference to the flowcharts shown in FIGS.
FIG. 14 is a flowchart of the finger passing finger basic correction process executed as step SL5. First, the correction process will be described in detail with reference to FIG.

  First, in step SP1, ME [mepass]. The value of fig, the variable pint, ME [me]. From the value of posx, ME [me + 1]. The absolute value of the value obtained by subtracting the value of posx is substituted. In the subsequent step SP2, the value of the variable f is 1 and the value of the variable pint is greater than 5, the value of the variable f is 2 and the value of the variable pint is greater than 4, or the value of the variable f Is 3 and whether the value of the variable pint is larger than 3 is determined. The value of the variable f is 1, and the value of the variable pint is greater than 5, the value of the variable f is 2, and the value of the variable pint is greater than 4, or the value of the variable f is 3, and the variable If the value of pint is greater than 3, the determination is yes, and ME [me]. As cost, a value obtained by adding the value of the variable pint to the previous value is set, and then the process proceeds to step SP4. Otherwise, the determination is no and the process moves to step SP4. The determination of YES in step SP2 satisfies the condition for correcting the cost more greatly, determined by paying attention to the finger to be used for pressing the designated sound and the pitch difference between the designated sound and the next note. Means.

  In step SP4, the value of the variable me is substituted for the variable metmp. In the subsequent step SP5, the value of the variable metmp is 0, or ME [metmp]. It is determined whether the value of tend is 0. The value of the variable metmp is 0, or ME [metmp]. If the value of tend is 0 (the note specified by the value of variable metmp is located at the extreme point), the determination is yes and the process moves to step SP7. Otherwise, the determination is no, the value of the variable metmp is decremented in step SP6, and the process returns to step SP5 again. Thereby, a note corresponding to the note located at the head or the pole located immediately before the designated sound is searched.

  In step SP7, ME [metmp]. It is determined whether the value of tendstep is greater than 5. If the value is greater than 5, the determination is yes and the process moves to step SP9. Otherwise, the determination is no and ME [me]. cost, ME [mepass]. The value of tendstep and ME [metmp]. From the value of tendstep, ME [mepass]. After a value obtained by adding the smaller subtraction value obtained by subtracting the value of tendstep to the previous value is set, a series of processing ends. As a result, when the number of pitch changes between the extreme points located before and after the specified sound is relatively short, the pitch to the extreme points located before and after the note is specified based on the note specified by the value of the variable mepass. The smaller of the number of changes is treated as a cost correction.

  In step SP9, ME [menpass]. It is determined whether the remainder of dividing the value of posx by 2 is 1. If the pitch of the note specified by the value of the variable menpass is the pitch assigned to the black key, the determination is YES, and ME [me]. As cost, a value obtained by adding 8 to the previous value is set, and then a series of processing ends. As a result, if the key to be pressed with a finger that moves above or passes with a black key is a black key, 8 is added as a cost correction amount. Otherwise, the determination is no and the process moves to step SP11.

  In step SP11, the value of the variable f is determined. If the value is determined to be 1, the process proceeds to step SP12, and the value obtained by adding 4 to the previous value is set to ME [me]. After newly setting as “cost”, the series of processing ends. Similarly, when it is determined that the value is 2, the process proceeds to step SP13, and the value obtained by adding 3 to the previous value is set to ME [me]. After newly setting as cost, if it is determined that the value is 3, the process proceeds to step SP14, and the value obtained by adding 5 to the previous value is ME [me]. After newly setting as “cost”, the series of processing ends. When it is determined that the value is 4, the series of processing ends here without correcting the cost. In this way, an addition corresponding to the type of finger that passes above or passes through the bottom is added to the previous cost.

  Next, the step time / jump progress correction processing executed as step SL6 in the finger crossing finger penetration correction processing shown in FIG. 13 will be described in detail with reference to the flowchart shown in FIG. In the correction process, the cost is corrected in consideration of the pitch change (jumping progress) in addition to the time interval (step time) of the sound generation start time.

  First, in step SQ1, ME [me + 1]. From the value of time, ME [me]. The value obtained by subtracting the value of time, 0 to the variables stave, same, and cnt, and the value of the variable me to the variables mepc and menc, respectively. In the subsequent step SQ2, the value of the variable mepc is 0, or ME [mepc]. It is determined whether the value of tend is 0. If the note specified by the value of the variable mepc is a note located at the beginning of the song or a note located at the extreme point, the determination is yes and the process moves to step SQ4. Otherwise, the determination is no and the process proceeds to step SQ3, and ME [mepc]. From the value of time, ME [mepc-1]. The value obtained by subtracting the value of time, the value obtained by adding the value of the variable tmpst to the previous value for the variable stave, and the value obtained by incrementing the previous value if the value of the variable tmpst is equal to the value of the variable st Then, a value obtained by incrementing the previous value is assigned to the variable cnt, and a value obtained by decrementing the previous value is assigned to the variable mepc, and the process returns to step SQ2. As a result, an accumulated time that accumulates the time interval of the sounding start time between notes existing before the specified sound and within the interval from the note located at the beginning of the song to the note located at the immediately preceding extreme point Is counted by the variable stave, the number of notes whose time interval is equal to that between the designated note and the next note is counted by the variable same, and the total number of notes is counted by the variable cnt.

  In step SQ4, the value of the variable menc is equal to the value of the variable ev_max or ME [menc]. It is determined whether the value of tend is 0. If the note specified by the value of the variable menc is a note located at the end of the song or a note located at the extreme point, the determination is yes and the process moves to step SQ6. Otherwise, the determination is no and the process proceeds to step SQ5, and ME [menc + 1]. From the value of time, ME [menc]. A value obtained by subtracting the value of time, a value obtained by adding the value of the variable tmpst to the previous value for the variable stave, and a value obtained by incrementing the previous value if the value of the variable tmpst is equal to the value of the variable st Then, a value obtained by incrementing the previous value is assigned to the variable cnt, and a value obtained by incrementing the previous value is assigned to the variable menc, and the process returns to step SQ4. Thereby, when the determination in step SQ4 is YES, the interval between the notes specified by the values of the variables mepc and menc is set as the target section, and the sounding start time between the notes existing in the target section is set. The accumulated time obtained by accumulating the time interval is assigned to the variable stave, the number of notes whose time interval is equal to that between the designated note and the next note is assigned to the variable same, and the total number of notes is assigned to the variable cnt.

  In step SQ6, if the value of the variable cnt is not 0, a value obtained by dividing the previous value by the value of the variable cnt (a time interval obtained by averaging the time intervals of the pronunciation start times between notes) is newly assigned to the variable stave. . In the next step SQ7, it is determined whether or not the value of the variable st is less than the value of the variable stave and the value of the variable same is less than 5. If the time interval of the sounding start time between the specified sound and the next note is shorter than the average time interval and there are relatively few notes that coincide with the time interval with the next note, the determination is YES and step SQ8. The value obtained by adding 5 to the previous value is ME [me]. The value set as cost, the process proceeds to step SQ9. If this is not the case, that is, if the time interval between the specified note and the next note is greater than the average time interval, or there are relatively many notes that match the time interval with the next note. Since the determination is NO and it is not necessary to correct the cost, the process proceeds to step SQ9. Hereinafter, the time interval of the sound generation start time between adjacent notes will be expressed as, for example, “specified sound time interval”, focusing on the previous note.

  In step SQ9, ME [menc]. From the value of posx, ME [mepc]. The absolute value of the value obtained by subtracting the value of posx is 20 or more, and ME [mepc]. It is determined whether the value of tendstep is less than 8. If it proceeds more than one octave within the interval between the notes specified by the values of the variables mepc and menc, and the number of pitch changes is small (jumping progress), the determination is yes and the process proceeds to step SQ10. Otherwise, the determination is no and the series of processing ends here.

  In step SQ10, ME [me]. From the value of posx, ME [mepc]. The absolute value of the value obtained by subtracting the value of posx is determined. If it is determined that the value is less than 14, the process proceeds to step SQ11, and a value obtained by adding 5 to the previous value is set to ME [me]. After setting as “cost”, the series of processing ends. If the value is determined to be 14, the process proceeds to step SQ12, and the value obtained by subtracting 5 from the previous value is ME [me]. After setting as “cost”, the series of processing ends. If it is determined that the value is greater than 14, a series of processing ends here. The reason why the cost is further reduced in step SQ12 is that a pitch change of one octave often becomes a boundary of phrases.

Returning to the description of the subroutine processing executed in the cost correction processing shown in FIG.
FIG. 16 is a flowchart of the chord versus distributed chord correction process executed as step SC13. Next, the correction process will be described in detail with reference to FIG. The correction process is a process for correcting the cost by paying attention to the mutual relationship between the chord and the subsequent distributed chord.

  First, in step SJ1, ME [me]. It is determined whether the value of hmny is greater than 1. If the note specified by the value of the variable me is a constituent sound that is not located at the beginning of the chord, the value is greater than 1, so the determination is yes and the process moves to step SJ2. Otherwise, the determination is no and the series of processing ends here.

  In step SJ2, the value of variable me is set in variable ev1, and ME [me]. The value of nhtop (index value specifying the note located at the head of the next note group) is substituted. In a succeeding step SJ3, it is determined whether or not the value of the variable ev2 is not -1. If there is no note group following the note group to which the specified note belongs, ME [me]. Since -1 is set as the value of nhtop, the determination is no, and the series of processing ends here. Otherwise, the determination is yes and the process moves to step SJ4.

  In step SJ4, ME [ev1]. A value obtained by subtracting 1 from the value obtained by adding the value of hmny is substituted into the variable ev2. As such, under the assumption that the distributed chord will continue, the value specifying the constituent sound of the distributed chord that is in the same order as the order from the beginning of the chord of the note specified by the value of the variable me After substituting for ev2, the process proceeds to step SJ5, where the value of variable ev2 is less than or equal to the value of variable ev_max, and ME [ev2]. It is determined whether or not the value of arp is not zero. If the note specified by the value of the variable ev2 is a constituent sound of a distributed chord, the determination is YES, the cost calculation process between two sounds shown in FIG. 8 is executed in step SJ6, and the value up to that point is further determined in step SJ7. Is obtained by dividing the value obtained by adding the value of the variable cost2ev to 2 (= (ME [me] .cost + cost2ev) / 2) ME [me]. After newly setting as “cost”, the series of processing ends. Otherwise, the determination is no and the series of processing ends here.

  FIG. 17 is a flowchart of the distributed chord to distributed chord correction process executed as step SC14 in the cost correction process shown in FIG. Next, the correction process will be described in detail with reference to FIG. The correction process is a process for correcting the cost by paying attention to the mutual relationship between the distributed chord and the subsequent distributed chord.

  First, in step SK1, ME [me]. It is determined whether or not the value of arp is not zero. If the note specified by the value of the variable me is a constituent sound of a distributed chord, the value is a non-zero value, so the determination is yes and the process moves to step SK2. Otherwise, the determination is no and the series of processing ends here.

  In step SK2, the value of variable me is set in variable ev1, and ME [me]. Substitute the value of nhtop respectively. In a succeeding step SK3, it is determined whether or not the value of the variable ev2 is not -1. If there is no note group following the note group to which the specified note belongs, ME [me]. Since -1 is set as the value of nhtop, the determination is no, and the series of processing ends here. Otherwise, the determination is yes and the process moves to step SK4.

  In step SK4, ME [ev1]. A value obtained by subtracting 1 from the value obtained by adding the values of arp is substituted into the variable ev2. As such, under the assumption that the distributed chord continues, a value that specifies the constituent sound of the distributed chord that is in the same order as the order from the beginning of the distributed chord of the note specified by the value of the variable me. After substituting for the variable ev2, the process proceeds to step SK5, where the value of the variable ev2 is less than or equal to the value of the variable ev_max and ME [ev2]. It is determined whether or not the value of arp is not zero. If the note specified by the value of the variable ev2 is a constituent sound of a distributed chord, the determination is YES, the cost calculation process between two sounds shown in FIG. 8 is executed in step SK6, and the value up to that point in step SK7. Is obtained by dividing the value obtained by adding the value of the variable cost2ev to 2 (= (ME [me] .cost + cost2ev) / 2) ME [me]. After newly setting as “cost”, the series of processing ends. Otherwise, the determination is no and the series of processing ends here.

  FIG. 18 is a flowchart of the single-tone chord correction process executed as step SC15 in the cost correction process shown in FIG. Next, the correction process will be described in detail with reference to FIG. The correction process is a process for correcting the cost by paying attention to the mutual relationship between a single tone and the following chord.

  First, in step SM1, ME [me]. hmny has a value of 0 and ME [me]. It is determined whether or not the value of arp is 0. If the note (designated note) designated by the value of the variable me is a single note that does not belong to the chord group or the distributed chord note group, the determination is yes and the process proceeds to step SM2. If not, that is, if the designated sound is not a single note, the determination is no, and the series of processing ends here.

  In step SM2, the value of variable me is set in variable ev1, and ME [me]. Substitute the value of nhtop respectively. In the subsequent step SM3, the value of the variable ev2 is not -1, and ME [ev2]. It is determined whether the value of hmny is not zero. If there is a note group following the specified sound and the subsequent note group is a chord note group, the determination is yes and the process moves to step SM4. If not, that is, if there is no note group following the specified sound, or if the subsequent note group is not a chord note group, the determination is no, and the series of processing ends here.

  In step SM4, a cost calculation process between two sounds shown in FIG. 8 is executed. In the following step SM5, ME [me]. As cost, a value obtained by adding the value of variable cost2ev to the previous value is set, and the value of variable ev2 is incremented. In step SM6 which moves to after that, the value of the variable ev2 is ME [me]. It is determined whether it is larger than the value of nhtail. When the calculation of the cost is completed between the specified note and all the notes constituting the subsequent chord note group, the relationship is satisfied, so the determination is YES and the process proceeds to step SM7 and ME [me ]. cost, ME [me]. From the value of nhtail, ME [me]. The value obtained by dividing the previous value by the value obtained by adding 2 to the value obtained by subtracting the value of nhtop (= ME [me] .cost / (ME [me] .nhtail-ME [me] .nhtop + 2)) After a new setting, the series of processing is terminated. Otherwise, the determination is no and the process returns to step SM4. Thereby, the process loop formed by steps SM4 to SM6 is repeatedly executed until the calculation of the cost is completed between all the notes constituting the chord note group.

  Next, the chord to single tone correction process executed as step SC16 in the cost correction process shown in FIG. 10 will be described in detail with reference to the flowchart shown in FIG. The correction process is a process for correcting the cost by paying attention to the mutual relationship between the chord and the subsequent note group.

  First, in step SH1, ME [me]. It is determined whether the value of hmny is 1. If the note specified by the value of the variable me is a constituent sound located at the beginning of the chord, the value is 1, so the determination is yes and the process moves to step SH2. Otherwise, the determination is no and the series of processing ends here.

  In step SH2, the value of the variable me is set in the variable ev1, and ME [me]. Substitute the value of nhtop respectively. In the subsequent step SH3, the value of the variable ev2 is not -1, but ME [ev2]. hmny has a value of 0 and ME [ev2]. It is determined whether or not the value of arp is 0. If there is a single note following the note group to which the designated sound belongs, the determination is yes and the process moves to step SH4. Otherwise, the determination is no and the series of processing ends here.

  In step SH4, ME [ev1]. The value of posx is ME [ev2]. It is determined whether or not the value is greater than the value of posx. If the pitch of the single tone following the chord is lower than the pitch (minimum pitch) of the constituent sound located at the head of the chord, the determination is YES, the cost calculation process between two sounds shown in FIG. 8 is executed in step SH5, and further, step SH6 is executed. Then, the value obtained by adding the value of the variable cost2ev to the previous value divided by 2 (= (ME [me] .cost + cost2ev) / 2) is obtained as ME [me]. After newly setting as “cost”, the series of processing ends. Otherwise, the determination is no and the series of processing ends here.

  FIG. 20 is a flowchart of the chord to chord correction process executed as step SC17 in the cost correction process shown in FIG. Next, the correction process will be described in detail with reference to the flowchart shown in FIG. The correction process is a process for correcting the cost by paying attention to the mutual relationship between a chord and the following chord.

  First, in step SF1, ME [me]. It is determined whether the value of hmny is not zero. If the note specified by the value of the variable me is a chord component, the value is not 0, so the determination is yes and the process moves to step SF2. Otherwise, the determination is no and the series of processing ends here.

  In step SF2, ME [me]. Substitute the value of nhtop. In the following step SF3, the value of the variable mean is not -1, and ME [menear]. It is determined whether the value of hmny is not zero. If a note group other than chords continues, the determination is no, and the series of processing ends here. Otherwise, the determination is yes, and ME [menear]. From the value of posx, ME [me]. The absolute value of the value obtained by subtracting the value of posx is substituted into the variable pi, and the value obtained by adding 1 to the value of the variable menear is substituted into the variable metmp. Then, the process proceeds to step SF5.

  In the present embodiment, the cost is calculated between a constituent sound whose pitch is closest to the designated sound among the constituent sounds of the following chords and the designated sound. In steps SF5 to SF9, processing for specifying a constituent sound having the closest pitch to the designated sound is performed.

  First, in step SF5, ME [metmp]. From the value of posx, ME [me]. The absolute value of the value obtained by subtracting the value of posx is substituted. In the next step SF6, it is determined whether or not the value of the variable pi is larger than the value of the variable pitmp. If the value of the variable pi is greater than the value of the variable pitmp, the determination is YES, and in step SF7, the value of the variable pitmp is substituted for the variable pi, the value of the variable metmp is substituted for the variable mean, and the value of the variable metmp is further substituted in step SF8. After incrementing, the process proceeds to step SF9. Otherwise, the determination is no and next, the process of step SF8 is executed.

  In step SF9, the value of the variable metmp is ME [me]. It is determined whether it is larger than the value of nhtail. The value of variable metmp is ME [me]. If it is greater than the value of nhtail, the determination is yes and the process moves to step SF10. Otherwise, the determination is no and the process returns to step SF5.

  In step SF10, the value of the variable me is substituted for the variable ev1, and the value of the variable minor is substituted for the variable ev2. In the following step SF11, the cost calculation process between two sounds shown in FIG. 8 is executed. In the next step SF12 to be transferred, ME [me]. As cost, a value (= (ME [me] .cost + cost2ev) / 2) obtained by dividing the value obtained by adding the value of the variable cost2ev to the previous value by 2 is newly set. The series of processing is finished thereafter.

  FIG. 21 is a flowchart of the forward chord correction process executed as step SC18 in the cost correction process shown in FIG. Finally, the correction process will be described in detail with reference to the flowchart shown in FIG. The correction process is a process for correcting the cost by paying attention to the mutual relationship between the chord and the chord located immediately before the chord.

  First, in step SR1, ME [me]. It is determined whether the value of hmny is not zero. If the note specified by the value of the variable me is a chord component, the value is not 0, so the determination is YES, and in step SH2, the variable mean is set to ME [me]. After substituting the value of phtop, the process proceeds to step SR3. Otherwise, the determination is no and the series of processing ends here.

  The processing executed in steps SR3 to SR12 and the flow thereof are basically the same as those in steps SF3 to SF12 in the chord pair chord correction processing. For this reason, the description of the processing of steps SR3 to SR12 is omitted.

  In the present embodiment, the final cost calculation with reference to the fingering information generated in step SB1 (sequential generation processing) shown in FIG. 4 is performed in step SB6 (designated sound cost calculation processing). The calculation is performed in two stages by correcting the cost in the subsequent step SB7 (cost correction process), but the calculation may be performed in one stage. The content to be focused on when correcting the cost is not limited to the present embodiment.

  The fingering to be corrected in the fingering indicated by the generated fingering information is not a prohibited item, and the finally calculated cost is assumed to be larger than the constant THRCOST. You may make it correct regardless of whether it corresponds. Or you may make all the fingerings which do not correspond to a prohibition matter be the object of correction. Various modifications including this can be made.

  A program for realizing the fingering information generation apparatus as described above may be distributed by being recorded on a recording medium such as a CD-ROM, a DVD, or a removable flash memory. Part or all of the program may be distributed via a communication network such as a public network. In such a case, the user can apply the present invention to the device by acquiring the program and loading it into the data processing device. Therefore, the recording medium may be accessible by a device that distributes the program.

It is a figure explaining the structure of the electronic musical instrument carrying the fingering information generation apparatus by this Embodiment. It is a figure explaining the structure of the performance data stored in RAM of an electronic musical instrument. It is a flowchart of the whole process. It is a flowchart of a fingering production | generation process. It is a flowchart of a prohibition matter search process. It is a flowchart of a prohibition matter search process (continuation). It is a flowchart of a designated sound cost calculation process. It is a flowchart of a cost calculation process between two sounds. It is a figure explaining the data stored in ROM of the electronic musical instrument. It is a flowchart of a cost correction process. It is a flowchart of a step time correction process. It is a flowchart of a polyphonic correction process. It is a flowchart of a finger crossing finger penetration correction process. It is a flowchart of a finger passing fingerhole basic correction process. It is a flowchart of a step time and jump progress correction process. It is a flowchart of a chord pair dispersion chord correction process. It is a flowchart of a dispersion chord pair dispersion chord correction process. It is a flowchart of a single tone pair chord correction process. It is a flowchart of a chord versus single tone correction process. It is a flowchart of a chord pair chord correction process. It is a flowchart of a front chord correction process.

Explanation of symbols

1 CPU
2 ROM
3 RAM
4 Input unit 5 Display unit 6 External storage device

Claims (7)

A device for generating fingering information indicating fingering when carrying a musical piece by operating a group of performance operators provided in a musical instrument,
Performance information acquisition means for acquiring performance information indicating the performance content of the music;
With reference to the performance information acquired by the performance information acquisition means, fingering information generation means for generating fingering information of the music whose performance information indicates the performance content;
A difficulty level calculating means for calculating the difficulty level in performing the fingering indicated by the fingering information with reference to the fingering information generated by the fingering information generating means;
Fingering information correction means for correcting the fingering information generated by the fingering information generation means based on the difficulty level calculated by the difficulty level calculation means;
A fingering information generation device comprising: The difficulty level calculation means virtually divides the performance information into one or more partial performance information with reference to the performance information, and includes the performance content represented by the partial performance information and the connection of the partial performance information. Calculating the degree of difficulty by focusing on at least one of
The fingering information generation device according to claim 1. The performance content represented by the partial performance information includes at least one of a difference in sound generation start timing between the sounds to be generated, the number of sounds to be simultaneously generated, a ratio of overlapping sound generation periods between the sounds, and presence / absence of jumping progress. Focus on
The fingering information generating device according to claim 2, wherein The difficulty level calculation means calculates the difficulty level excluding fingering that satisfies a predetermined condition among the fingerings indicated by the fingering information,
The fingering information correcting means corrects the fingering for which the difficulty level calculating means calculates the difficulty level.
The fingering information generation device according to claim 1, 2, or 3. A device for generating fingering information indicating fingering when carrying a musical piece by operating a group of performance operators provided in a musical instrument,
Performance information acquisition means for acquiring performance information indicating the performance content of the music;
With reference to the performance information acquired by the performance information acquisition means, fingering information generation means for generating fingering information of the music whose performance information indicates the performance content;
With reference to the fingering information generated by the fingering information generating means, fingering extraction means for extracting a finger to be corrected among the fingerings indicated by the fingering information;
Fingering information correction means for correcting the fingering extracted by the fingering extraction means;
A fingering information generation device comprising: A program to be executed by a fingering information generating device that generates fingering information indicating fingering when a musical piece is operated by operating a group of performance operators provided in a musical instrument,
A function of obtaining performance information indicating the performance content of the music;
A function of generating fingering information of a music piece that indicates the performance content with reference to the performance information acquired by the function to be acquired;
A function of referring to the fingering information generated by the function to be generated and calculating the degree of difficulty in performing the fingering indicated by the fingering information;
A function for correcting fingering information generated by the function to be generated based on the degree of difficulty calculated by the function to be calculated;
A program to realize A program to be executed by a fingering information generating device that generates fingering information indicating fingering when a musical piece is operated by operating a group of performance operators provided in a musical instrument,
A function of obtaining performance information indicating the performance content of the music;
A function of generating fingering information of a music piece that indicates the performance content with reference to the performance information acquired by the function to be acquired;
A function of referring to fingering information generated by the function to be generated and extracting a finger to be corrected among the fingerings indicated by the fingering information;
A function for correcting fingering extracted by the extracting function;
A program to realize

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