JP6090644B2 - Performance difficulty evaluation device, program, and electronic musical instrument - Google Patents

Description

The present invention relates to an apparatus for evaluating the difficulty level when playing a musical piece with a keyboard instrument, and more particularly to a performance difficulty evaluation apparatus , a program, and an electronic musical instrument for evaluating the difficulty level of a keyboard performance using both hands.

  2. Description of the Related Art Conventionally, there has been known an apparatus for evaluating the difficulty level when playing music with a keyboard instrument. As this type of technology, for example, Patent Document 1 discloses elements necessary for playing a music piece based on any of pitch information, fingering information, and time information in musical tone data representing each note constituting the music piece ( Calculate the individual difficulty level for each of fingering, rhythm, and tonality, multiply each of the calculated individual difficulty levels by a weighting factor, and accumulate the weighted individual difficulty level A technique for acquiring the difficulty level of the entire music is disclosed.

JP 2010-281882 A

  By the way, in the technique disclosed in the above-mentioned patent document 1, the right-hand finger usage and the left-hand finger usage are divided into the right-hand finger usage and the left-hand finger usage. There is a problem that it is impossible to evaluate the difficulty of fingering to play music while cooperating, that is, the difficulty of playing a keyboard using both hands.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a performance difficulty evaluation device , a program, and an electronic musical instrument that can evaluate the difficulty of keyboard performance using both hands.

In order to achieve the above object, the performance difficulty evaluation device of the present invention provides:
From note data including a finger number representing a finger to be played for each note constituting the song and an identifier identifying which of the right hand part and the left hand part , the right hand part note data and the right hand part note A reading processing unit for reading the note data of the left-hand part corresponding to the data,
A fingering pattern determined from two finger numbers of the right hand part read by the reading processing unit and two finger numbers of the left hand part corresponding to the two finger numbers of the right hand part, and the right hand part A first determination unit that determines the cost of the left hand part according to each fingering pattern different from each other by a combination of the finger numbers of the part and the left hand part;
A fingering pattern determined from two finger numbers of the left hand part read by the reading processing unit and two finger numbers of the right hand part corresponding to the two finger numbers of the left hand part, and the left hand A second determination unit that determines the cost of the right hand part according to each fingering pattern different from each other by a combination of the finger numbers of the part and the right hand part;
The difficulty level acquisition for acquiring data indicating the difficulty level when playing with both hands calculated based on the cost of the left hand part determined by the first determination unit and the cost of the right hand part determined by the second determination unit and parts,
It is characterized by comprising.

  In the present invention, it is possible to evaluate the difficulty level of keyboard performance using both hands.

1 is a block diagram illustrating an overall configuration of an electronic musical instrument 100. FIG. 3 is a memory map showing a main data configuration of a RAM 12; It is a flowchart which shows operation | movement of a main routine. It is a flowchart which shows operation | movement of difficulty evaluation processing. It is a flowchart which shows operation | movement of difficulty evaluation processing. It is a flowchart which shows operation | movement of a cost determination process. It is a flowchart which shows operation | movement of a cost determination process. It is a flowchart which shows operation | movement of a cost determination process. It is a figure for demonstrating an example of the specific operation | movement of a difficulty level evaluation process.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
A. Configuration FIG. 1 is a block diagram illustrating an overall configuration of an electronic musical instrument 100 including a performance difficulty evaluation device according to an embodiment. In this figure, the CPU 10 has normal instrument functions for instructing the tone generator 16 to generate musical sounds based on performance information generated by the keyboard 13 in response to a performance operation, and is provided for practice of music performance. It has a difficulty level evaluation function for evaluating the level of difficulty when playing a keyboard using both hands based on music data (described later) serving as a model (exemplary performance). The characteristic processing operation of the CPU 10 according to the present invention will be described in detail later.

  The ROM 11 includes a data area and a program area. In the data area of the ROM 11, music data serving as a model (exemplary performance) is stored for a plurality of music (factory preset). Among these pieces of music data, music data designated by the user is stored in a music data area ME (described later) of the RAM 12. Various control programs loaded into the CPU 10 are stored in the program area of the ROM 11. The various control programs include a difficulty level evaluation process that constitutes a main routine described later. The difficulty level evaluation process includes a cost determination process.

  The RAM 12 includes a music data area and a work area. Here, with reference to FIG. 2, main data stored in the music data area ME and the work area WE of the RAM 12 will be described. In the music data area ME of the RAM 12, music data specified by the user is read from the ROM 11 and stored. The music data is composed of a plurality of note data (1) to (n) corresponding to each sound constituting the music.

  One piece of note data includes a pitch Pit representing a sounding pitch, a sounding time Time representing a sounding timing, a sound length Gate representing a sounding duration, a finger number Fig representing a finger to be played, and a part number Part identifying a performance part. . Note that the sound generation time Time is called an absolute time format, and represents the sound generation timing by the elapsed time from the beginning of the song. The finger number FIG. Is a number that designates a finger that plays (presses) the corresponding note. Specifically, “1” for the thumb, “2” for the index finger, “3” for the middle finger, and “3” for the ring finger. "4" for the little finger and "5" for the little finger. The part number Part is a number for identifying whether the corresponding note is a right-hand part (melody part) or a left-hand part (accompaniment part), and is “0” for the right-hand part and “0” for the left-hand part. 1 ".

  The work area WE of the RAM 12 is provided with a register for temporarily storing various variables used for difficulty evaluation processing described later. Of the music data stored in the music data area ME of the RAM 12, note data to be evaluated is stored in the register me. In the register next, note data to be generated next to the note data stored in the register me is stored. The register other stores the note data of the same part as the note data stored in the register me and the opposite part of the note data stored in the register me. In the register diagonal, note data to be generated next in the same part as the note data stored in the register other is stored.

  The register number f0 stored in the note data of the register me is stored in the register f0. In the register fn, the finger number Fig in the note data of the register next is stored. The register fo stores the finger number Fig in the note data of the register other. The register fd stores the finger number Fig in the note data of the register diagonal. The register fo2 stores a converted value (finger number 6-fo counted again from the little finger side) of the finger number Fig in the note data of the register other. The register fd2 stores a converted value of the finger number Fig (finger number 6-fd counted again from the little finger side) in the note data of the register diagonal.

  The register iCMType temporarily stores a type number indicating the type (type) of difficulty (cost) of keyboard performance using both hands. The type number is a number for identifying the type (type) of difficulty (cost) determined from a combination of fingers of both left and right hands playing four sounds. Counters iCMTypeCnt [1] to [N] count the number for each type (type) specified by the type number. The registers iCMTypeCost [1] to [N] store the difficulty (cost) for each type (type) specified by the type number. The degree of difficulty (cost) for each type (type) is numerical information obtained empirically. The register cmtype temporarily stores the number of types.

  The configuration of the embodiment will be described with reference to FIG. 1 again. In FIG. 1, a keyboard 13 generates performance information including a key-on / key-off event, a key number, velocity, and the like corresponding to a performance operation (press / release key operation). The operation unit 14 has various operation switches arranged on the apparatus panel, and generates a switch event corresponding to a switch type operated by the user. As main switches arranged in the operation unit 14, for example, a power switch for turning on / off power, a mode switching switch for switching the operation mode of the electronic musical instrument 100 to either the instrument function mode or the difficulty evaluation function mode, music data There are a song selection switch for selecting the, and an end switch for instructing the end of the operation.

  For example, if the operation mode is the difficulty level evaluation function mode, the display unit 15 displays music data to be evaluated for the difficulty level according to the display control signal supplied from the CPU 10 or displays the evaluation result of the difficulty level. To do. The tone generator 16 is configured by a well-known waveform memory reading method, and generates tone data corresponding to performance data generated by the CPU 10 based on performance information supplied from the keyboard 13. The sound system 17 converts the musical tone data output from the sound source 16 into an analog musical tone signal, and then performs filtering such as removing unnecessary noise from the musical tone signal, and then amplifies the level and produces a sound from the speaker.

B. Operation Next, the operation of the electronic musical instrument 100 configured as described above will be described with reference to FIGS. Hereinafter, when the operation mode of the electronic musical instrument 100 is the difficulty evaluation function mode, the main routine executed by the CPU 10, the difficulty evaluation process called from the main routine, and the cost determination called from the difficulty evaluation process Each operation of the processing will be described.

(1) Operation of Main Routine FIG. 3 is a flowchart showing the operation of the main routine. The main routine is executed when the operation mode of the electronic musical instrument 100 is switched to the difficulty level evaluation function mode by the mode switch. When the operation mode is switched to the difficulty level evaluation function mode, the CPU 10 executes the main routine shown in FIG. 3 and proceeds to step SA1 to perform initialization for initializing each part of the instrument. When the initialization is completed, the CPU 10 proceeds to step SA2 and determines whether or not there is an end operation by the end switch. If the end operation is not performed, the determination result is “NO”, and the flow proceeds to Step SA3.

  In step SA3, a data input process is performed in which the music data selected by the music selection switch operation is read from a plurality of music data stored in the data area of the ROM 11 and stored in the music data area ME of the RAM 12. Next, in step SA4, a difficulty level evaluation process is executed based on the music data stored in the music data area ME of the RAM 12.

  In the difficulty evaluation process, as will be described later, it is divided into a case where the right hand part is the main part and a case where the left hand part is the main part. In each case, the note data to be evaluated (the notes in the register me) Each time data is updated, four note data (each note data stored in a register me, a register next, a register other, and a register diagonal) used for determining the type (type) of difficulty (cost) are stored in the music data. Search, determine the type (type) of difficulty (cost) of keyboard performance using both hands based on the finger number Fig contained in the corresponding four note data, and accumulate the number of types (type) The operation is repeated until all the note data in the music data is evaluated, and the type of difficulty (cost) present in the music data Get the number of per-flops). Then, the difficulty level (cost) for each type (type) existing in the music data is read out from the register iCMTypeCost [1] to [N] in which the difficulty level (cost) for each type (type) is stored in advance. As a result, the accumulative cost iCMCost (the difficulty level of keyboard performance using both hands) is acquired.

  Thereafter, the process is returned to the above-described step SA2, and thereafter, the above-described steps SA2 to SA9 are repeatedly executed until an end operation is performed. When the end operation is performed, the determination result in step SA2 is “YES”, and the present process ends.

(2) Operation of difficulty level evaluation process Next, the operation of the difficulty level evaluation process will be described with reference to FIGS. When this process is executed via step SA4 (see FIG. 3) of the main routine described above, the CPU 10 proceeds to step SB1 shown in FIG. 4 to reset the pointer i to zero, and in the subsequent step SB2, the pointer Whether i is smaller than “2”, that is, determination of the type (type) of difficulty (cost) mainly using the right hand part and determination of the type (type) of difficulty (cost) mainly using the left hand part Judge whether you have finished both.

  If both the determination of the type (type) of the difficulty (cost) mainly based on the right hand part and the determination of the type (type) of the difficulty (cost) mainly based on the left hand part are not completed, the determination in step SB2 is performed. The result is “YES”, and the flow proceeds to step SB3. In step SB3, it is determined whether or not the pointer i is “0”. If the pointer i is “0”, the determination result is “YES”, and the flow proceeds to Step SB4. In step SB4, part information iRH for designating the right-hand part is set in the index tr and part information iLH for designating the left-hand part in order to proceed with the determination of the type (type) of difficulty (cost) mainly using the right-hand part. Is set to the index otr, and then the process proceeds to Step SB6.

  In step SB6, the note data of the first note of the right-hand part specified by the index tr is stored in the register me as the note data to be evaluated first. Subsequently, in step SB7, it is determined whether or not all the note data in the music data has been evaluated. If all the note data has not been evaluated, the determination result here is “NO”, and the flow proceeds to step SB8. In step SB8, note data to be generated next to the note data stored in the register me is searched from the music data and stored in the register next.

  Next, in step SB9, the musical note data of the part specified by the index otr at the same sounding timing as the musical note data stored in the register me is retrieved from the music data and stored in the register other. For example, when the pointer i is “0”, the note data of the left-hand part specified by the index otr at the same sounding timing as the note data stored in the register me is stored in the register other.

  Subsequently, in step SB10, the musical note data to be generated next in the same part as the musical note data stored in the register other is retrieved from the music data and stored in the register diagonal. In Steps SB8 to SB10, if there is no corresponding note data in the music data, for example, null data indicating no corresponding sound is stored in the corresponding register.

  When the four note data used for determining the type (type) of difficulty (cost) is stored in the registers me, next, other, and diagonal, the cost determination process is executed via step SB11. In the cost determination process, as will be described later, the note data stored in the registers me, next, other, and diagonal constitute a chord and the case where the chord does not constitute a chord. In addition to determining the type number indicating the type (type) of the difficulty (cost) of playing the keyboard using both hands based on the finger numbers Fig. If the type number representing the type (type) of difficulty (cost) in the case of missing is determined, and the keyboard performance using both hands is not established due to the lack of three sounds, the difficulty (cost) ) Is determined to indicate “0” does not exist.

  When the type number representing the type (type) of the difficulty (cost) of playing the keyboard using both hands is stored in the register iCMType by the cost determination process in step SB11, the process proceeds to step SB12, and the value of the register iCMType ( It is determined whether or not (type number) is greater than “0”. If the value (type number) of the register iCMType is greater than “0”, that is, if there is a difficulty level (cost) of playing the keyboard using both hands, the determination result in step SB12 is “YES”, and the process proceeds to step SB13. After incrementing the counter iCMTypeCnt [iCMType] corresponding to the value (type number) of the register iCMType, the process proceeds to step SB14. Accordingly, the number of types (types) of difficulty (cost) identified by the value (type number) of the register iCMType is counted.

  On the other hand, if the value (type number) of the register iCMType is “0”, that is, if the keyboard performance using both hands is not established and there is no difficulty (cost), the determination result in step SB12 is “NO”. Thus, the process proceeds to step SB14, the note data to be generated next to the note data in the register me is stored and updated in the register me, and the process returns to the above-described step SB7.

  Thereafter, in steps SB7 to SB14, every time the note data to be evaluated (note data of the register me) is updated, four note data (register me, register) used to determine the type (type) of difficulty (cost). Next, each note data stored in the register, register other, and register diagonal) is searched from the music data, and the type (type) of the difficulty (cost) of keyboard performance using both hands is determined based on the corresponding note data. The operation of accumulating the number of types is repeated.

  Then, when all the note data in the music data has been subjected to evaluation, the determination result in step SB7 described above becomes “YES”, the process proceeds to step SB15, the pointer i is incremented, and the above step is performed. The process returns to step SB2. In this case, since the determination of the type (type) of the difficulty level (cost) centered on the right-hand part has only been completed, the pointer i is smaller than “2”, and therefore the determination result in step SB2 is “YES”. Proceed to SB3.

  In step SB3, the determination result is “NO” in accordance with the progress of the pointer i, the process proceeds to step SB5, and the left-hand part is determined so as to proceed with the determination of the type (type) of difficulty (cost) mainly using the left-hand part. The part information iLH designating the part is set in the index tr, and the part information iRH designating the right-hand part is set in the index otr. Then, the process proceeds to Step SB6.

  After step SB6, the determination of the type (type) of the difficulty (cost) mainly based on the left hand part is advanced in the same manner as the determination of the type (type) of the difficulty (cost) mainly based on the right hand part. That is, every time the note data to be evaluated (note data of the register me) is updated, the four note data (register me, register next, register other, and register) used to determine the type (type) of difficulty (cost) Each musical note data stored in the diagonal is searched from the music data, and the type (type) of the difficulty (cost) of playing the keyboard using both hands is determined based on the corresponding musical note data. Repeat the operation of accumulating numbers.

  When the determination of the type (type) of the difficulty level (cost) centering on the left hand part is completed and all the note data in the music data has been evaluated, the determination result in step SB7 is “YES”. Thus, the process proceeds to step SB15, the pointer i is incremented and stepped, and then the process returns to step SB2. In this case, since the incremented pointer i is “2”, the determination result in step SB2 is “NO”, and the process proceeds to step SB16 shown in FIG.

  In step SB16, the pointer i is reset to zero, and in subsequent step SB17, it is determined whether or not the pointer i is smaller than the number of types stored in the register cmtypen. In the present embodiment, the number of types (types) is “14 (types)”. If the pointer i is smaller than the number of types stored in the register cmtypen, the determination result in step SB17 is “YES”, and the flow advances to step SB18.

  In step SB18, it is determined whether or not the value of the counter iCMTypeCnt [i] that designates the pointer i as a type number, that is, the number of types (types) of difficulty (cost) designated by the pointer i is greater than “0”. To do. When the number of types of difficulty (cost) is “0” or less, that is, when the keyboard performance using both hands is not established and there is no difficulty (cost), the determination result is “NO” In step SB20, the pointer i is incremented and incremented, and then the process returns to step SB17 described above.

  On the other hand, if the number of types (types) of difficulty (cost) specified by the pointer i is greater than “0” and there is a difficulty (cost), the determination result in step SB18 is “YES”. The process proceeds to step SB19. In step SB19, the difficulty (cost) of the type (type) designated by the pointer i is read from the register iCMTypeCost [i] and added to the register iCMCost. Then, the process proceeds to step SB20, the pointer i is incremented and stepped, and then the process returns to step SB17 described above.

  Thereafter, the above steps SB17 to SB20 are repeated until the incremented pointer i (type number) exceeds the number of types (types) stored in the register cmtypen, and according to the pointer i (type number). Then, the difficulty (cost) for each type (type) that is read from the register iCMTypeCost [i] and added in the music data is added to the register iCMCost, and an accumulated cost iCMCost corresponding to the difficulty of playing the music with both hands is obtained. get.

  As described above, the difficulty evaluation process is divided into a case where the right-hand part is the main part and a case where the left-hand part is the main part. In each case, the note data to be evaluated (the notes in the register me) Each time data is updated, four note data (each note data stored in a register me, a register next, a register other, and a register diagonal) used for determining the type (type) of difficulty (cost) are stored in the music data. Search, determine the type (type) of difficulty (cost) of keyboard performance using both hands based on the finger number Fig contained in the corresponding four note data, and accumulate the number of types (type) The difficulty (cost) that exists in the song data by repeating the operation until all the note data in the song data has been evaluated. Get the number of each type (type).

  Then, the difficulty level (cost) for each type (type) existing in the music data is read out from the register iCMTypeCost [1] to [N] in which the difficulty level (cost) for each type (type) is stored in advance. As a result, the accumulated cost iCMCost is obtained. Since the accumulated cost iCMCost corresponds to the difficulty level when playing the music represented by the music data using both hands, it is possible to evaluate the difficulty level of the keyboard performance using both hands.

(3) Operation of Cost Determination Process Next, the operation of the cost determination process will be described with reference to FIGS. When this process is executed via step SB11 (see FIG. 4) of the difficulty level evaluation process described above, CPU 10 advances the process to step SC1 shown in FIG. In step SC1, the finger number Fig in the note data of the register me is stored in the register f0, and the finger number Fig in the note data of the register next is stored in the register fn. Further, the finger number Fig in the note data of the register other is stored in the register fo, and the finger number Fig in the note data of the register diagonal is stored in the register fd. Further, the converted value of finger number Fig in the note data of register other (finger number 6-fo counted again from the little finger side) is stored in register fo2, and the converted value of finger number Fig in the note data of register diagonal (small finger) The finger number 6-fd) counted again from the side is stored in the register fd2.

  Subsequently, in step SC2, it is determined whether or not the note data is stored without omission for all of the registers me, next, other, and diagonal. Hereinafter, the operation description will be divided into “when there is no missing”, “when one is missing”, “when two are missing”, and “when three or more are missing”.

a. When there is no omission If the note data is stored without omission for all of the registers me, next, other, and diagonal, the determination result at step SC2 is "YES", and the process proceeds to step SC3 shown in FIG. In step SC3, it is determined whether or not a chord is present. That is, it is determined whether or not the note data stored in the registers me, next, other, and diagonal have a pitch relationship that constitutes a chord. In the following, the description of the operation will be divided into a case where a chord is not configured and a case where a chord is configured.

a-1. When a chord is not formed When a chord is not formed, the determination result at step SC3 is “YES”, and the flow proceeds to step SC4. In step SC4, the finger number Fig in the note data of the register me stored in the register f0 matches the finger number Fig in the note data of the register other stored in the register fo and stored in the register fn. It is determined whether or not the finger number Fig in the note data of the register next matches the finger number Fig in the note data of the register diagonal stored in the register fd.

  Here, the note data in the register me is the first note me to be evaluated, the note data in the register other is the second note other in the opposite part at the same sounding timing as the first note me, and the note data in the register next is the first note. In other words, the note data in the third sound next and the register diagonal which is the sound generation timing next to the me is the fourth sound diagonal which is the sound generation timing next to the second sound other of the opposite part at the same sound generation timing as the first sound me.

  Then, step SC4 means that the first sound me and the second sound other are played with the same fingers of both left and right hands, and then the third sound next and the fourth sound diagonal are played with the same fingers of both left and right hands. Whether or not the pattern is a pattern is determined. If it corresponds to this fingering pattern, the determination result in step SC4 is “YES”, the process proceeds to step SC5, and the type number “1” indicating the type (type) of difficulty (cost) of keyboard performance using both hands. Is stored in the register iCMType and the process is terminated.

  On the other hand, if it does not correspond to the fingering pattern of playing the first sound me and the second sound other with the same fingers of both left and right hands, and then playing the third sound next and the fourth sound diagonal with the same fingers of both left and right hands, The determination result in SC4 is “NO”, and the flow proceeds to step SC6.

  In step SC6, there are five ways to use fingers ("thumb of one hand and little finger of the other hand", "index finger of one hand and ring finger of the other hand", "middle finger of one hand and middle finger of the other hand). ”,“ Ring finger of one hand and forefinger of the other hand ”,“ the little finger of one hand and the thumb of the other hand ”), the first sound me and the second sound other, It is determined whether the fingering pattern is to play the third sound “next” and the fourth sound “diagonal” with any of the street fingering.

  If this fingering pattern is met, the determination result in step SC6 is “YES”, and the process proceeds to step SC7, where the type number “type” indicating the type (type) of difficulty (cost) of keyboard performance using both hands is entered. 2 "is stored in the register iCMType, and this process is terminated.

  On the other hand, if it does not correspond to the above fingering pattern, the determination result in step SC6 is “NO”, and the process proceeds to step SC8. In step SC8, a value (fn-f0) obtained by subtracting the finger number Fig in the note data of the register me stored in the register f0 from the finger number Fig in the note data of the register next stored in the register fn, and the register fd. The difference between the finger number Fig in the note data in the register other stored in the register fo and the value (fd-fo) subtracted from the finger number in the note data in the register diagonal stored in the register fo is calculated in the register a. Store.

  Here, fn-f0 is the distance (number of fingers) between the finger playing the first sound me and the finger playing the third sound next with one hand, and fd-fo is the second sound other with the other hand. This is the degree of separation (number of fingers) between the finger that plays and the finger that plays the fourth sound diagonal. Accordingly, the register a has a difference value between the degree of finger separation (number of fingers) played with one hand and the degree of finger separation (number of fingers) played with the other hand, in other words, the left and right of the finger usage of both hands. A value representing symmetry is stored. That is, if the finger usage of both hands is symmetrical, the difference value between the degree of finger separation (number of fingers) played with one hand and the degree of finger separation (number of fingers) played with the other hand is “0”. The difference value increases (the maximum value is “3”) as the finger usage of both hands becomes asymmetrical.

  Subsequently, in step SC9, it is determined whether or not the difference value stored in the register a (a value representing the left / right symmetry of finger usage of both hands) is “0”. If the difference value is “0”, the determination result is “YES”, the process proceeds to step SC10, and the type number “3” indicating the type (type) of difficulty (cost) of keyboard performance using both hands is registered. Store in iCMType and finish this process.

  On the other hand, if the difference value stored in the register a is not “0”, the determination result in step SC9 is “NO”, and the process proceeds to step SC11. It is determined whether or not (value representing left-right symmetry) is “1”. If the difference value is “1”, the determination result is “YES”, the process proceeds to step SC12, and the type number “4” representing the type (type) of difficulty (cost) of keyboard performance using both hands is registered in the register iCMType. To store the data and finish the process.

  On the other hand, if the difference value stored in the register a is not “1”, the determination result in step SC11 is “NO”, and the process proceeds to step SC13. It is determined whether or not (a value representing left-right symmetry of use) is “2”. If the difference value is “2”, the determination result is “YES”, and the process proceeds to step SC14 to register the type number “5” indicating the type (type) of difficulty (cost) of keyboard performance using both hands. Store in iCMType and finish this process.

  On the other hand, if the difference value stored in the register a is not “2”, the determination result in step SC13 is “NO”, and the process proceeds to step SC15. It is determined whether or not (value representing left-right symmetry) is “3”. If the difference value stored in the register a (a value representing the left / right symmetry of the finger usage of both hands) is not “3”, that is, if the finger usage of both hands is not established, the determination result is “NO”, which is difficult. This process ends without determining the type (type) of the degree (cost), but if the difference value is “3”, the determination result in step SC15 is “YES”, and the process proceeds to step SC16. The type number “6” representing the type (type) of difficulty (cost) of the keyboard performance used is stored in the register iCMType, and the process is terminated.

a-2. When Constructing a Chord When composing a chord, the determination result of step SC3 is “NO”, and the process proceeds to step SC17 shown in FIG. In step SC17, as in step SC4 (see FIG. 7) described above, the first sound me and the second sound other are played with the same fingers of both left and right hands, and then the third sound next and the fourth sound diagonal are the same in both left and right hands. It is determined whether the fingering pattern is to play with a finger. If it corresponds to this fingering pattern, the determination result is “YES”, and the process proceeds to step SC18, where the type number “8” indicating the type (type) of difficulty (cost) of keyboard performance using both hands is stored in the register iCMType. Store and finish this process.

  On the other hand, if it does not correspond to the fingering pattern of playing the first sound me and the second sound other with the same fingers of both left and right hands, and then playing the third sound next and the fourth sound diagonal with the same fingers of both left and right hands, The determination result in SC17 is “NO”, and the flow proceeds to step SC19.

  In step SC19, there are five ways to use fingers ("thumb of one hand and little finger of the other hand", "index finger of one hand and ring finger of the other hand", "middle finger of one hand and middle finger of the other hand). ”,“ Ring finger of one hand and forefinger of the other hand ”,“ the little finger of one hand and the thumb of the other hand ”), the first sound me and the second sound other, It is determined whether the fingering pattern is to play the third sound “next” and the fourth sound “diagonal” with any of the street fingering.

  If this fingering pattern is met, the determination result in step SC19 is “YES”, and the process proceeds to step SC20, where the type number “type” indicating the type (type) of difficulty (cost) of keyboard performance using both hands is entered. 9 "is stored in the register iCMType, and this process is terminated.

  On the other hand, if it does not correspond to the above fingering pattern, the determination result in step SC19 is “NO”, and the process proceeds to step SC21. In step SC21, as in step SC8 (see FIG. 7) described above, the degree of finger separation (number of fingers) fn−f0 and the degree of finger separation (number of fingers) fd− with the other hand fd− A difference value from fo, that is, a value representing left-right symmetry of finger usage of both hands is stored in the register a.

  Subsequently, in step SC22, it is determined whether or not the difference value stored in the register a (a value representing the left / right symmetry of finger usage of both hands) is “0”. If the difference value is “0”, the determination result is “YES”, and the process proceeds to step SC23 to register the type number “10” representing the type (type) of difficulty (cost) of keyboard performance using both hands. Store in iCMType and finish this process.

  On the other hand, if the difference value stored in the register a is not “0”, the determination result in step SC22 is “NO”, and the process proceeds to step SC24. It is determined whether or not (value representing left-right symmetry) is “1”. If the difference value is “1”, the determination result is “YES”, the process proceeds to step SC25, and the type number “11” indicating the type (type) of difficulty (cost) of keyboard performance using both hands is registered in the register iCMType. To store the data and finish the process.

  On the other hand, if the difference value stored in the register a is not “1”, the determination result in step SC24 is “NO”, and the process proceeds to step SC26. It is determined whether or not (a value representing left-right symmetry of use) is “2”. If the difference value is “2”, the determination result is “YES”, the process proceeds to step SC27, and the type number “12” representing the type (type) of difficulty (cost) of keyboard performance using both hands is registered. Store in iCMType and finish this process.

  On the other hand, if the difference value stored in the register a is not “2”, the determination result in step SC26 is “NO”, and the process proceeds to step SC28. It is determined whether or not (value representing left-right symmetry) is “3”. If the difference value stored in the register a (a value representing the left / right symmetry of the finger usage of both hands) is not “3”, that is, if the finger usage of both hands is not established, the determination result is “NO”, which is difficult. This process ends without determining the type (type) of the degree (cost), but if the difference value is “3”, the determination result in step SC28 is “YES”, and the process proceeds to step SC29. The type number “13” representing the type (type) of difficulty (cost) of the keyboard performance used is stored in the register iCMType, and this processing is completed.

b. When one is missing If one note data is missing from the registers me, next, other and diagonal, the determination result in step SC30 (see FIG. 6) is “YES”, and the process proceeds to step SC31. The type number “15” representing the type (type) of difficulty (cost) of the keyboard performance used is stored in the register iCMType, and this processing is completed.

c. When two are missing If two note data are missing from the registers me, next, other, and diagonal, the determination result in step SC32 is “YES”, and the process proceeds to step SC33 to play the keyboard performance using both hands. The type number “19” representing the type (type) of the difficulty level (cost) is stored in the register iCMType, and this processing is completed.

d. When three or more are missing If three or more note data are missing from the registers me, next, other, and diagonal, the determination result in step SC32 is “NO”, and the process proceeds to step SC34. “0” indicating that the keyboard performance is not established and the difficulty level (cost) does not exist is stored in the register iCMType, and this processing is completed.

  As described above, the first sound me to be evaluated, the second sound other of the opposite part at the same sounding timing as the first sound me, the third sound next and the first sound that are the sounding timing next to the first sound me. When the fourth sound diagonal, which is the sound generation timing next to the second sound other of the opposite part at the same sound generation timing as me, is searched from the music data by the above-described difficulty evaluation process, the four sound sounds in the cost determination process. The type of difficulty (cost) of playing the keyboard with both hands based on the finger number Fig included in the note data of 4 notes for each case, separately from the case of forming a chord and the case of not forming a chord In addition to determining the type number representing the type number, the type number representing the type (type) of difficulty (cost) when one sound is missing from the above four sounds or when two sounds are missing. Constant and, in the case of a further 3 keyboard playing sound with both hands missing is not satisfied, it is determined to "0" indicating that the degree of difficulty (cost) does not exist as a type number.

C. Specific Operation Example Next, a specific operation example of the difficulty level evaluation process will be described with reference to FIG. FIG. 9A shows an example in which a part of music data composed of a right hand part and a left hand part is displayed as a score, and FIG. 9B shows fingering when a part of the music data is played with both left and right hands. The numerical value shown in the vicinity of the note in the score of FIG. 9A indicates the finger number FIG.

  In the score shown in FIG. 9, when the second sound (C5 sound) of the first bar of the right hand part is the first sound me to be evaluated, the right hand is obtained by step SB8 (see FIG. 4) of the difficulty level evaluation process. The first sound (G5 sound) of the second measure of the part becomes the third sound next, and the second sound of the first measure (C4 sound) of the left hand part becomes the second sound other by the step SB9 of the difficulty evaluation process, and the difficulty level By the step SB10 of the evaluation process, the second measure first sound (E4 sound) of the left hand part becomes the fourth sound diagonal.

  Then, when the cost determination process is executed through step SB11 of the difficulty level evaluation process, in this case, the thumb “1” playing the first sound me with the right hand and the ring finger “4” playing the third sound next are separated. The condition (number of fingers) fn−f0 is “3”, the left finger “1” playing the second sound other and the index finger “2” playing the fourth sound diagonal (number of fingers) fd−fo is Since “1” is set, “2” is stored in the register a as a value representing the left / right symmetry of the finger usage of both hands. As a result, the keyboard performance using both hands is performed in step SC14 (see FIG. 7) of the cost determination process. The type number “5” indicating the type (type) of the difficulty (cost) is stored in the register iCMType.

  Thereafter, each time the note data to be evaluated (note data in the register me) is updated, with the right-hand part as the subject, the four note data (register me) used to determine the type (type) of the difficulty (cost) , Register next, register other and each note data stored in register diagonal) are searched from the music data, and the type (type) of difficulty (cost) of keyboard performance using both hands is determined based on the corresponding note data. Then, the operation of accumulating the number of types is repeated until all the note data of the right-hand part in the music data is read out as the evaluation target.

  When the determination of the type (type) of the difficulty level (cost) with the right hand part as the subject is completed, the same difficulty type (cost) type (type) is determined with the left hand part as the subject. Get the number of difficulty (cost) for each type. Then, the difficulty level (cost) for each type (type) existing in the music data is read out from the register iCMTypeCost [1] to [N] in which the difficulty level (cost) for each type (type) is stored in advance. Then, an accumulated cost iCMCost corresponding to the difficulty level of playing a song with both hands is acquired.

  As described above, in the present embodiment, the first sound me to be evaluated, the second sound other of the opposite part at the same sounding timing as the first sound me, and the third sounding timing next to the first sound me. The musical note data is searched for each note data of the fourth sound diagonal, which is the next pronunciation other than the second sound other of the opposite part at the same sound generation timing as the sound next and the first sound me, and the corresponding four note data is obtained. Based on the included finger number Fig, the type (type) of the difficulty (cost) of keyboard performance using both hands is determined, and the operation of accumulating the number of types (types) is performed for all notes in the music data. It repeats until it finishes making data into the object of evaluation, and the number for every kind (type) of difficulty (cost) which exists in music data is obtained. Then, the difficulty level (cost) for each type (type) existing in the music data is read out from the register iCMTypeCost [1] to [N] in which the difficulty level (cost) for each type (type) is stored in advance. Since the accumulated cost iCMCost corresponding to the difficulty level of playing a song with both hands is acquired, the difficulty level of keyboard performance using both hands can be evaluated.

  In the above-described embodiment, the difficulty (cost) for each type (type) present in the music data is accumulated to evaluate the difficulty, but in addition to this, it exists in the music data. Depending on the number of difficulty levels (costs) for each type (type), the difficulty level (cost) corresponding to the type (type) may be weighted and accumulated.

  In the present embodiment, the difficulty level evaluation is not performed in consideration of the user's performance skill, but for example, “It is difficult to move the right hand little finger”, “It is difficult to press the key with the left ring finger”, “The hand is small and the predetermined pitch is high. A mode of adjusting the difficulty (cost) when a specific fingering is performed in keyboard performance using both hands in order to take into account the user's individual performance skills such as "cannot simultaneously press two sounds exceeding the difference" In this way, it is possible to implement a difficulty evaluation that matches the performance skill of the user.

  In addition, in the above-described embodiment, the first sound me to be evaluated, the second sound other of the opposite part at the same sounding timing as the first sound me, and the third sound next that is the sounding timing next to the first sound me. Also, it is assumed that the difficulty (cost) can be evaluated by a combination of fingers playing the fourth sound diagonal which is the sounding timing next to the second sound other of the opposite part at the same sounding timing as the first sound me. Of course, the present invention is not limited to this, and it is of course possible to evaluate the difficulty (cost) with a combination of fingers that play four or more sounds.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited to it, It is included in the invention described in the claim of this-application, and its equivalent range. Hereinafter, each invention described in the scope of claims at the beginning of the present application will be additionally described.

(Appendix)
[Claim 1]
A predetermined relationship based on the part data included in the note data from among the note data including the finger number indicating the finger necessary to play each note constituting the song and the part data for identifying the performance part of the note. Type determination means for searching for the first to fourth note data and determining the type of difficulty when playing with both hands based on the finger numbers respectively included in the corresponding first to fourth note data;
A difficulty level evaluation device comprising: difficulty level acquisition means for acquiring a difficulty level value for each type determined by the type determination means as a difficulty level when a song is played with both hands.

[Claim 2]
The type determination means sequentially searches the first to fourth note data having a predetermined relationship based on the part data included in the note data, and specifies the finger data included in the corresponding first to fourth note data. Determine the type of difficulty when playing with both hands based on the number,
2. The difficulty level acquiring unit according to claim 1, wherein the difficulty level acquisition unit sequentially accumulates the difficulty level value determined for each type determined by the type determination unit, and acquires the level of difficulty when playing a song with both hands. Performance difficulty evaluation device.

[Claim 3]
The type determination means includes the first sound me to be evaluated, the second sound other of the opposite part at the same sound generation timing as the first sound me, the third sound next and the first sound next to the sound generation timing after the first sound me. Search means for sequentially searching each note data of the fourth sound diagonal which is the sound generation timing next to the second sound other of the opposite part at the same sound generation timing as the sound me as the first to fourth note data. The performance difficulty evaluation device according to claim 1, wherein:

[Claim 4]
The type determining means includes
Each time the first note data to be evaluated is updated with the right hand part as the subject, the first to fourth note data used for type determination of the difficulty level are sequentially searched, and the corresponding first to fourth note data are retrieved. First determination means for determining the type of difficulty to play with both hands based on the finger numbers included in each data;
Each time the first note data to be evaluated is updated with the left hand part as the subject, the first to fourth note data used for the type determination of the difficulty level are sequentially searched, and the corresponding first to fourth note data are retrieved. The performance difficulty evaluation device according to claim 1, further comprising: a second determination unit that determines a type of difficulty level to play with both hands based on finger numbers included in each data.

[Claim 5]
The first and second determination means are determined by the degree of separation of a finger played with one hand and the degree of separation of a finger played with the other hand, based on finger numbers included in the first to fourth note data, respectively. 5. The performance difficulty evaluation device according to claim 4, wherein the type of difficulty of playing with both hands is determined in accordance with the left / right symmetry of finger usage of both hands.

[Claim 6]
The first and second determining means, when the first to fourth note data are not prepared, determines the type of difficulty of playing with both hands according to the number of missing note data. Item 4. The performance difficulty evaluation device according to Item 4.

[Claim 7]
The first and second determining means include chord discriminating means for discriminating whether or not the first to fourth note data constitutes a chord, and is divided into a case where a chord is constituted and a case where no chord is constituted. 5. The performance difficulty evaluation device according to claim 4, wherein a difficulty type is determined.

[Claim 8]
On the computer,
Among the note data including the finger number indicating the finger necessary for playing the notes constituting the song and the part data for identifying the performance part of the note, a predetermined relationship is established based on the part data included in the note data. A type determination step of sequentially searching for certain first to fourth note data and determining a difficulty type when performing with both hands based on finger numbers included in the corresponding first to fourth note data;
A difficulty level acquisition step of acquiring a difficulty level value for each type determined in the type determination step as a difficulty level when playing a song with both hands.

10 CPU
11 ROM
12 RAM
13 keyboard 14 operation unit 15 display unit 16 sound source 17 sound system 100 electronic musical instrument

Claims (7)

From note data including a finger number representing a finger to be played for each note constituting the song and an identifier identifying which of the right hand part and the left hand part , the right hand part note data and the right hand part note A reading processing unit for reading the note data of the left-hand part corresponding to the data,
A fingering pattern determined from two finger numbers of the right hand part read by the reading processing unit and two finger numbers of the left hand part corresponding to the two finger numbers of the right hand part, and the right hand part A first determination unit that determines the cost of the left hand part according to each fingering pattern different from each other by a combination of the finger numbers of the part and the left hand part;
A fingering pattern determined from two finger numbers of the left hand part read by the reading processing unit and two finger numbers of the right hand part corresponding to the two finger numbers of the left hand part, and the left hand A second determination unit that determines the cost of the right hand part according to each fingering pattern different from each other by a combination of the finger numbers of the part and the right hand part;
The difficulty level acquisition for acquiring data indicating the difficulty level when playing with both hands calculated based on the cost of the left hand part determined by the first determination unit and the cost of the right hand part determined by the second determination unit and parts,
A performance difficulty evaluation device comprising: The fingering pattern differs depending on whether or not the left hand part or right hand part is missing the finger number read by the read processing unit.
The performance difficulty evaluation device according to claim 1, wherein: The reading processing unit has a first sound of one part to be evaluated, a second sound that is the same as the first sound, a second sound that is the next sound generation timing after the first sound, and the same sound generation timing as the first sound. 2. The performance difficulty evaluation device according to claim 1, wherein the musical note data of the fourth sound, which is the next sound generation timing after the third sound, is read in the same part as the third sound and the third sound of the part. The first and second determination units determine the cost according to the left / right symmetry of finger usage of both hands, which is determined by the degree of separation of a finger played with one hand and the degree of separation of a finger played with the other hand. The performance difficulty evaluation device according to claim 1, wherein: The first and second determination units determine whether or not the note data of the two sounds of the right-hand part and the two sounds of the left-hand part to be evaluated constitute a chord. The performance difficulty evaluation device according to claim 1, wherein the cost is determined separately from the case of not configuring. On the computer,
From note data including a finger number representing a finger to be played for each note constituting the song and an identifier identifying which of the right hand part and the left hand part , the right hand part note data and the right hand part note A reading process step for reading the note data of the left-hand part corresponding to the data;
A fingering pattern determined from two finger numbers of the right hand part read by the reading processing step and two finger numbers of the left hand part corresponding to the two finger numbers of the right hand part, and the right hand part A first determination step of determining the cost of the left hand part according to each fingering pattern different from each other by the combination of the respective finger numbers of the part and the left hand part;
A fingering pattern determined from two finger numbers of the left hand part read by the reading processing step and two finger numbers of the right hand part corresponding to the two finger numbers of the left hand part, and the left hand A second determination step of determining the cost of the right hand part according to each fingering pattern different from each other by a combination of the respective finger numbers of the part and the right hand part;
The difficulty level acquisition for acquiring data indicating the difficulty level when playing with both hands calculated based on the cost of the left hand part determined by the first determination step and the cost of the right hand part determined by the second determination step Steps ,
A program characterized by having executed. The performance difficulty evaluation device according to claim 1,
A keyboard that generates performance information in response to performance operations;
A sound source for generating musical sounds based on the performance information;
Electronic musical instrument with

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