JP4543832B2 - Fingering information correction device and fingering information correction processing program - Google Patents

Description

  The present invention relates to a fingering information correction device and a fingering information correction processing program suitable for use in an electronic musical instrument having a keyboard.

  There is known an apparatus for generating fingering information for guiding the position of a key to be played to a performer and finger operation (fingering) for key operation. For example, in Patent Literature 1, two-finger fingering data representing ease of finger use when operating the keyboard for two adjacent sounds is stored in association with each combination of fingers. The two-finger fingering data corresponding to the song data (sound string of the given melody) is read from within, and the fingering information is generated by determining the fingering that optimizes the accumulated value of the read two-finger fingering data An apparatus is disclosed.

Japanese Patent No. 2526954

By the way, when generating fingering information from song data based on the technique disclosed in Patent Document 1, depending on the content of the song data, for example, improper fingering (finger There is a problem that fingering information is not generated and cannot be corrected in such a case.
Accordingly, the present invention has been made in view of such circumstances, and an object thereof is to provide a fingering information correction device and a fingering information correction processing program capable of correcting an inappropriate fingering.

In order to achieve the above object, according to the first aspect of the present invention, the pitch of the musical piece, the fingering information indicating the type of finger used for playing the pitch, and the finger indicated by the fingering information are not effective. A storage unit that sequentially stores a plurality of events including determination information indicating whether or not a prohibition condition determined to be appropriate is satisfied, and among the events stored in the storage unit, the determination information satisfies the prohibition condition The search means for searching for an event having the determination information determined to be, and when the event searched by the search means is sequentially assigned from the thumb to the little finger as the type of finger used to play the event, the prohibition Whether or not the condition is satisfied is determined, and based on fingering information indicating the type of finger assigned to the event and fingering information included in the event following the event, the allocation is performed. An evaluation means for performing an operation for calculating an evaluation value for evaluating the difficulty level when the event is played with the finger that has been taken, and the evaluation value that does not satisfy the prohibition condition and is calculated by the evaluation means is a predetermined reference A finger that satisfies the condition that the value does not exceed the value is searched, and fingering information indicating the kind of finger having the evaluation value with the lowest difficulty of playing is searched for the fingering of the searched event. By storing the information in the storage means as information , the assigning means for assigning the fingering information to the searched event, and when the finger satisfying the condition is not searched by the assigning means, the evaluation means Control means for starting the operation again and controlling the evaluation means so that an evaluation value having a lower performance difficulty than the previously calculated evaluation value is calculated. To.

Further, as in the invention described in claim 2, the fingering information correction device has the trend data representing the pitch tendency of the pitch included in each event corresponding to each event, and the trend data Includes a range designating unit that designates one event from each before and after the event searched by the search unit, and specifies a range on the storage unit in the two events, and the evaluation unit includes: For each event included in the range specifying means, it is determined whether or not the prohibition condition is satisfied when the thumb to the little finger are sequentially assigned as the types of fingers used for playing the event, and the event is assigned to the event. The event is performed with the assigned finger based on the fingering information indicating the type of finger to be assigned and the fingering information included in the event following the event. It may be configured to perform an operation for calculating an evaluation value for evaluating the degree of difficulty in the case of.

In the invention according to claim 3, it is determined that the pitches constituting the music, the fingering information indicating the type of finger used for the performance of the pitch, and the finger indicated by the fingering information are inappropriate for the performance. A computer used as a fingering information correction device having a storage means in which a plurality of events consisting of determination information indicating whether or not the prohibition condition is satisfied is sequentially stored. Among the events stored in the storage means, the determination information is A search step of searching for an event having determination information determined to satisfy the prohibition condition, and when the searched event is sequentially assigned from the thumb to the little finger as the type of finger used to play the event. It is determined whether or not the prohibition condition is satisfied, and fingering information indicating the type of finger assigned to the event, and fingering information included in the event following the event, An evaluation step for calculating an evaluation value for evaluating the difficulty level when the event is played with the assigned finger, and the evaluation value that does not satisfy the prohibition condition and the calculated evaluation value is a predetermined criterion. A finger that satisfies the condition that the value does not exceed the value is searched, and fingering information indicating the kind of finger having the evaluation value with the lowest difficulty of playing is searched for the fingering of the searched event. By storing the information in the storage means as information, the assigning step of assigning the fingering information to the searched event , and when a finger that satisfies the condition is not searched, the re-operation of the evaluation step is started, And a control step of controlling the evaluation means so that an evaluation value having a lower difficulty level of performance than the previously calculated evaluation value is calculated.

According to the first and third aspects of the present invention, the pitch of the music, the fingering information indicating the type of finger used for playing the pitch, and the finger represented by the fingering information are inappropriate for the performance. The event having the determination information determined to satisfy the prohibition condition is searched for among the events including the determination information indicating whether or not the prohibition condition is determined. Determining whether or not the forbidden condition is satisfied when the finger types used for playing the event are sequentially assigned from thumb to little finger, and fingering information indicating the type of finger assigned to the event and the event Based on the fingering information included in the event that follows, an operation for calculating an evaluation value for evaluating the degree of difficulty when the event is played with the assigned finger is performed. Then, a finger that does not satisfy the prohibition condition and satisfies the condition that the calculated evaluation value does not exceed a predetermined reference value is searched, and the finger having the evaluation value with the lowest performance difficulty level among the searched fingers is searched. Is stored in the storage means as fingering information of the searched event, so that the fingering information is assigned to the searched event and a finger satisfying the condition is searched. If not, the re-operation of the evaluation step is started and the evaluation means is controlled so that an evaluation value having a lower performance difficulty than the previously calculated evaluation value is calculated. It can be corrected.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
A. First embodiment
(1) Configuration
FIG. 1 is a block diagram showing the overall configuration of the fingering information correction apparatus according to the first embodiment. The fingering information correction device includes a data input unit 1, a display unit 2, a data designation unit 3, a CPU 4, a ROM 5 and a RAM 6. The data input unit 1 takes in music data generated by a fingering information generation device (not shown) and stores it in the RAM 6. As shown in FIG. 2, the music data is configured in the MIDI data format, and includes music data representing each sound constituting the music and fingering data for each sound. The song data represents the sound generation start time, sound generation time, and pitch for each event MidiEvent corresponding to each sound constituting the music.

On the other hand, the fingering data has keyboard coordinates iPosx, fingering cfig, evaluation value iCost, and prohibition condition iNP corresponding to the sound represented by the music data. The keyboard coordinate iPosx represents the keyboard position corresponding to the pitch in the music data. The fingering cfig designates a finger (“0: thumb”, “1: index finger”, “2: middle finger”, “3: ring finger”, “4: little finger”) to be operated by the key. The evaluation value iCost represents the evaluation value of the fingering cfig. The prohibition condition iNP includes prohibition conditions (" prohibition condition 1: do not assign thumb or little finger to black key fingering", " prohibition condition 2: reverse fingering during chord" and " prohibition condition 3: fingering range" It does not exceed ")". When the prohibition condition is not met, the prohibition condition iNP is “0”.

  Under the control of the CPU 4, the display unit 2 displays, for example, music data including the music data and fingering data described above on the screen. The data designation unit 3 includes an input device such as a mouse or a keyboard, designates arbitrary data in the music data displayed on the screen of the display unit 2, and generates an instruction to correct the value. The CPU 4 controls each part of the apparatus, and processing operations related to the gist of the present invention will be described in detail later. The ROM 5 stores various control programs and tables that are loaded into the CPU 4. The various control programs referred to here include a main routine, correction processing, evaluation processing, prohibition condition determination processing, and cost correction processing described later.

  The ROM 5 is provided with a cost table cCostTwoFinger. The cost table cCostTwoFinger is a table that reads out an evaluation value that represents the ease of fingering of the sound that is the current evaluation target, taking into account two adjacent sounds, that is, the current evaluation target sound and the next sound. Specifically, iBW indicating whether the black key / white key is different, iPM indicating whether the next sound is the high-frequency side or the low-frequency side of the current evaluation target sound, and the fingering c fig assigned to the current evaluation target sound , ITt representing the fingering cfig assigned to the next sound, and an evaluation value corresponding to the separation distance iInt between the keyboard position of the currently evaluated sound and the keyboard position of the next sound are registered.

  The RAM 6 includes a data area and a work area. In the data area of the RAM 6, music data taken in via the data input unit 1 is stored. In the work area of the RAM 6, various register / flag data used in the main routine, correction process, evaluation process, prohibition condition determination process and cost correction process executed by the CPU 4 are temporarily stored. In the cost correction process described later, in the music data stored in the data area of the RAM 6, the evaluation value iCost of the fingering data that matches the prohibition condition is corrected according to the user operation.

(2) Operation Next, the operation of the first embodiment will be described with reference to FIGS. Below, the operation | movement of the main routine which CPU4 performs first is demonstrated, and each operation | movement of a correction process, an evaluation process, a prohibition condition determination process, and a cost correction process is demonstrated sequentially. In the following description of the operation, it is assumed that the music data illustrated in FIG. 2 is stored in the data area of the RAM 6 via the data input unit 1.

<Main routine operation>
In response to the power-on of the apparatus, the CPU 4 executes the main routine shown in FIG. 3 and proceeds to step SA1 to perform initialization processing for resetting various registers and flags stored in the RAM 6 and setting initial values. Do. Next, in step SA2, a pointer for designating the first sound among the music data stored in the data area of the RAM 6 is stored in the register me. Next, in step SA3, it is determined whether the pointer of the register me has reached “END” indicating the end of the song, that is, whether or not the proper determination as to whether or not all the sounds constituting the song are appropriate fingering has been completed. To do. If the appropriateness determination is not completed for all the sounds, the determination result is “NO”, and the process proceeds to Step SA4.

In step SA4, it is determined whether or not me [iNP] is not “0”, that is, whether or not the prohibition condition iNP in the fingering data of the sound designated by the pointer of the register me does not correspond to the prohibition condition. . If the prohibition condition is met, the determination result is “YES”, and the correction process is executed via step SA5. In the correction process, as will be described later, the fingering data of the inappropriate finger usage corresponding to the prohibition condition is reevaluated and corrected to an appropriate fingering, and then the process proceeds to step SA6.
On the other hand, if the prohibition condition is not met, the determination result is “NO”, the process proceeds to step SA6, the pointer me [next] designating the next sound is stored in the register me, and the process proceeds to step SA3. return.

Thereafter, steps SA3 to SA6 are repeated until the appropriateness determination is completed for all the sounds constituting the music. When the appropriateness determination is completed for all the sounds, the determination result in step SA3 is “YES”, and this processing is completed.
As described above, in the main routine, the music data stored in the data area of the RAM 6 is searched for a sound having inappropriate fingering data corresponding to the prohibition condition, and the fingering data of the corresponding sound is re-evaluated. To correct it.

<Operation of correction processing>
Next, the operation of the correction process will be described with reference to FIG. When this process is executed through step SA5 (see FIG. 3) of the main routine described above, the CPU 4 advances the process to step SB1 shown in FIG. 4, and sets the evaluation determination value in the register iRCost and the initial value in the register cfigBest. Set “−1”. In step SB2, the counter iOpt that counts the number of corrections is reset to zero. Next, in step SB3, it is determined whether or not the value of the counter iOpt is smaller than the specified value OPT_MAX, that is, whether or not the specified number of corrections has been performed. If the specified number of corrections is performed, the determination result is “NO”, and this process is completed. If the specified number of corrections is not performed, the determination result is “YES” and the process proceeds to step SB4.

  In step SB4, "0" is set in the register ifig. In the register ifig, as will be described later, index values “0: thumb”, “1: index finger”, “2: middle finger”, “3: ring finger”, and “3” are used to reevaluate fingering from the thumb to the little finger. 4: Little finger "is set. Subsequently, in step SB5, it is determined whether or not the value of the register ifig is smaller than “5”, that is, whether or not the fingering from the thumb to the little finger has been reevaluated. When re-evaluation of fingering is completed, the determination result is “NO”, and the process proceeds to step SB10 described later. If re-evaluation of fingering from the thumb to the little finger has not been re-evaluated, the determination result is “ "YES", and an evaluation process (described later) is executed via step SB6.

  In step SB7, the sound prohibition condition iNP (me [iNP]) re-evaluated in step SB6 is “0 (does not correspond to the prohibition condition)” and the re-evaluation value (the value of the register iCost). ) Is smaller than the evaluation determination value stored in the register iRCost, that is, it is determined whether or not the fingering has been updated to be easy to play. If the determination condition is not met, the determination result is “NO”, and the flow proceeds to step SB9. In step SB9, the index value of register ifig is incremented to re-evaluate the fingering for the next finger, and the process returns to step SB5 described above.

  On the other hand, if the determination condition is met, the determination result in step SB7 is “YES”, the process proceeds to step SB8, and the fingering (finger number) of the reevaluated sound stored in the register me [ifig] is displayed. In addition to storing in the register cfigBest, the re-evaluation value of the register iCost is stored in the register iRCost to update the evaluation determination value, and then the process proceeds to Step SB9.

  As described above, in steps SB4 to SB9, in order to re-evaluate the fingering me [cfig] of the sound corresponding to the prohibition condition, the fingering me [cfig] is changed from the thumb to the little finger in place of the index value of the register ifig. In step SB6, re-evaluation is performed. As a result, when the fingering (finger number) that does not correspond to the prohibition condition and has the smallest evaluation determination value and is easy to play is stored, the fingering is stored in the register cfgfast. It is like that.

  When the re-evaluation from the thumb to the little finger is completed, the determination result in step SB5 is “NO”, and the process proceeds to step SB10 to determine whether or not the value of the register cfgbest remains the initial value “−1”. . If the value of the register cfigBest remains the initial value “−1”, the determination result is “NO”, the process proceeds to step SB12, and after incrementing the counter iOpt that counts the number of corrections, the above-described step is performed. The process returns to step SB3. Thereafter, the above steps SB3 to SB10 are repeated until the number of corrections of the counter iOpt exceeds the specified value OPT_MAX.

  In the process of repeating steps SB3 to SB10 until the number of corrections of the counter iOpt exceeds the specified value OPT_MAX, the fingering (finger number) that does not satisfy the prohibition condition and has the smallest evaluation determination value and is easy to play is stored in the register cfigBest. The determination result in step SB10 is “YES”, and the process proceeds to step SB11, where the re-evaluated fingering (finger number) of the register cfigBest is registered in the fingering data me [cfig] of the corresponding sound. Finish the process.

<Operation of evaluation process>
Next, the operation of the evaluation process will be described with reference to FIGS. When this processing is executed through the above-described correction processing step SB6 (see FIG. 4), the CPU 4 proceeds to step SC1 shown in FIG. 5 and sets an initial value “−1” in the register iCost. Subsequently, in step SC2, the fingering (finger number) of the reevaluation target sound stored in the register me [ifig] is registered in the register iFt, and the keyboard coordinates of the reevaluation target sound stored in the register me [iPosx] are registered. In iFp, a remainder value of 2 in the register me [iPosx], that is, a value (0: white key / 1: black key) for identifying whether the reevaluation target sound is a black key / white key is stored in the register iBW. Store. Next, in step SC3, a pointer designating the next sound me [next] of the re-evaluation target sound is stored in the register men.

In step SC4, the fingering men [cfig] of the next sound specified by the pointer stored in the register men is stored in the register iTf, and the keyboard coordinates men [iPosx] of the next sound are stored in the register iTp. Next, in step SC5, the keyboard coordinates of the re-evaluation target sound stored in the register iFp and the keyboard coordinates of the next sound stored in the register iTp are compared, and if iFp <iTp, “0” is set, iFp ≧ If iTp, “1” is stored in the register iPM. That is, a value of “0” is stored in the register iPM if the next sound is higher than the re-evaluation target sound, and “1” is stored otherwise.
In step SC5, the distance (iTp-iFp or iFp-iTp) between both keys is stored in the register iInt from the keyboard coordinates of the reevaluation target sound and the keyboard coordinates of the next sound. In step SC6, the ease of fingering assigned to the re-evaluation target sound from the cost table cCostTwoFinger stored in the ROM 5 according to the values of the registers iBW, iPM, iFt, iTt, iInt obtained in steps SC2 to SC5. Read the evaluation value that represents it.

  Next, the prohibition condition determination process shown in FIG. 6 is executed via step SC7, and the process proceeds to step SD1. In step SD1, the re-evaluation target sounds are “prohibited condition 1: do not assign thumb or little finger to the fingering of the black key”, “prohibited condition 2: reverse fingering during chord” and “prohibited condition 3: fingering possible width” It is determined whether or not it matches any of the following. When the prohibition conditions 1 to 3 are not met, the determination result is “NO”, and this processing is completed. However, when any of the prohibition conditions 1 to 3 is satisfied, the prohibition condition me of the re-evaluation target sound “0” is set to [iNP] to indicate that the prohibition condition is not satisfied, and prohibition cost NOT_PERMIT-1-iOpt is set as the evaluation value me [iCost] of the reevaluation target sound. That is, in step SD2, the prohibition condition is solved, and a re-evaluation value is set by subtracting the number of corrections iOpt + 1 from the prohibition cost NOT_PERMIT indicating that it is most difficult to play.

  Subsequently, the evaluation correction process shown in FIG. 7 is executed via step SC8, and the process proceeds to step SE1. In step SE1, the evaluation value related to fingering between the two re-evaluation target sounds and the next sound is corrected by the user in consideration of the execution time and the connection with other sound strings (when chords are pressed). Manipulate. For example, if the difference between the event timing of the reevaluation target sound and the event timing of the next sound (absolute time difference) is short, it is difficult to perform fingering, and the evaluation value me [iCost] of the reevaluation target sound is increased or the absolute time difference If it is long, it is assumed that the fingering is easy and a correction operation is performed to lower the evaluation value me [iCost] of the reevaluation target sound. Other correction items include finger cross addition, finger crossing / finger return evaluation addition, finger crossing / finger dive when chords are pressed, and adjustment of key press width. The evaluation value me [iCost] of the target sound is corrected.

  When the user correction operation is completed, the process proceeds to step SE2, and it is determined whether or not the evaluation value me [iCost] of the reevaluation target sound is larger than the prohibition cost NOT_PERMIT indicating that it is hard to play. If the evaluation value me [iCost] of the re-evaluation target sound is smaller than the prohibition cost NOT_PERMIT, the determination result is “NO”, and this process is completed, but the evaluation value me [iCost] of the re-evaluation target sound is the prohibition cost NOT_PERMIT. If it is larger, the determination result is “YES”, the process proceeds to step SE3, and the evaluation value me [iCost] of the re-evaluation target sound is subtracted by the correction count iOpt.

  When the evaluation value me [iCost] of the re-evaluation target sound is corrected in this way, the CPU 4 advances the process to step SC9 shown in FIG. 5, and whether the re-evaluation target sound prohibition condition me [iNP] is not “0”. No, that is, whether the prohibited condition is not met. If the prohibition condition is not satisfied, the determination result is “NO”, and the process proceeds to step SC10. If the value of the register iCost is “0” or more, the value of the register iCost is set to the evaluation value me of the reevaluation target sound. Register as fingering data as [iCost]. When the value of the register iCost is negative, the predetermined value is registered in the fingering data as the evaluation value me [iCost] of the reevaluation target sound. On the other hand, if the prohibition condition is met, the determination result in step SC9 is “YES”, the process proceeds to step SC11, and the prohibition cost NOT_PERMIT is registered in the fingering data as the evaluation value me [iCost] of the reevaluation target sound. .

As described above, in the first embodiment, inappropriate fingering data corresponding to the prohibition condition is searched from fingering data representing the finger that is played for each sound constituting the song, and the corresponding fingering data is retrieved from the thumb. Re-evaluate while changing to the little finger, and if it becomes a fingering (finger number) that does not correspond to the prohibition condition and the evaluation judgment value is the smallest and easy to play, it will be registered as new fingering data I have to.
In particular, in the evaluation process for re-evaluation (see FIG. 5), the evaluation target sound and the next sound are taken into consideration, and an evaluation value representing the ease of fingering of the evaluation target sound is generated. The finger is one of “ prohibited condition 1: do not assign thumb or little finger to black fingering”, “ prohibited condition 2: reverse fingering during chord” and “ prohibited condition 3: not exceed fingering range” When the prohibited condition is met, an evaluation value obtained by subtracting the number of corrections iOpt + 1 from the prohibited cost NOT_PERMIT indicating that the prohibited condition is solved and the hardest to play is set, or between two sounds of the evaluation target sound and the next sound After the evaluation value related to the fingering is corrected according to the user operation, if the evaluation value of the corrected evaluation target sound is larger than the prohibition cost NOT_PERMIT, the evaluation value of the evaluation target sound is subtracted by the number of corrections iOpt. As a result, the evaluation determination value is relaxed in accordance with the number of corrections, and finally it is not determined that the fingering is inappropriate. Therefore, it is possible to correct inappropriate fingering.

B. Second Embodiment Next, the operation of the second embodiment will be described with reference to FIGS. The second embodiment is different from the first embodiment described above in that the fingering data includes data cTendency indicating the tendency of the pitch (song data), and this data cTendency is referred to and the prohibition condition is met. In other words, the evaluation section is determined as a string sequence in which the pitch of the sound is changed before and after the sound having the fingering data, and the fingering is re-evaluated within the evaluation range. In the following, each operation of “correction processing”, “evaluation range determination processing” and “determination range evaluation processing” according to the second embodiment will be described. In addition, since the main routine of 2nd Embodiment is the same as the above-mentioned 1st Embodiment, it abbreviate | omits about the description.

<Operation of correction processing>
As in the first embodiment described above, when this process is executed via step SA5 (see FIG. 3) of the main routine, the CPU 4 advances the process to step SF1 shown in FIG. 8 and stores the evaluation determination value in the register iRCost. , The initial value “−1” is set in the register cfigBest, and the counter iOpt that counts the number of corrections is reset to zero. Next, in step SF2, an evaluation range determination process is executed. In the evaluation range determination process, as will be described later, with reference to the data cTendency provided in the fingering data, the tone string section in which the pitch of the sound is switched before and after the sound having the fingering data corresponding to the prohibited condition is evaluated. Decide on a range.

  Subsequently, in step SF3, it is determined whether or not the value of the counter iOpt is smaller than the specified value OPT_MAX, that is, whether or not the specified number of corrections has been performed. If the specified number of corrections is performed, the determination result is “NO”, and this process is completed. If the specified number of corrections is not performed, the determination result is “YES”, and the process proceeds to step SF4. In step SF4, "0" is set in the register ifig. In the register ifig, as will be described later, index values “0: thumb”, “1: index finger”, “2: middle finger”, “3: ring finger”, and “3” are used to reevaluate fingering from the thumb to the little finger. 4: Little finger "is set.

  In step SF5, it is determined whether or not the value of the register ifig is smaller than “5”, that is, whether or not the fingering from the thumb to the little finger has been reevaluated. When re-evaluation of fingering is completed, the determination result is “NO”, and the process proceeds to step SF10 described later. If re-evaluation of fingering from the thumb to the little finger has not been re-evaluated, the determination result is “ "YES", and the determination range evaluation process (described later) is executed via step SF6.

  In step SF7, the sound prohibition condition iNP (me [iNP]) re-evaluated in step SF6 is “0 (does not correspond to the prohibition condition)” and the re-evaluation value (the value of the register iCost). ) Is smaller than the evaluation determination value stored in the register iRCost, that is, it is determined whether or not the fingering has been updated to be easy to play. If the determination condition is not met, the determination result is “NO”, and the process proceeds to step SF9. In step SF9, the index value of the register ifig is incremented to re-evaluate the fingering for the next finger, and the process returns to step SF5 described above.

  On the other hand, if the determination condition is met, the determination result in step SF7 is “YES”, the process proceeds to step SF8, and the fingering (finger number) of the reevaluated sound stored in the register me [ifig] is displayed. After storing in the register cfigBest and storing the re-evaluation value of the register iCost in the register iRCost to update the evaluation determination value, the process proceeds to step SF9.

  As described above, in steps SF4 to SF9, in order to re-evaluate the fingering me [cfig] of the sound corresponding to the prohibition condition, the fingering me [cfig] is changed from the thumb to the little finger in place of the index value of the register ifig. In step SF6, re-evaluation is performed. As a result, when the fingering (finger number) that does not correspond to the prohibition condition and has the smallest evaluation determination value and is easy to play is stored, the fingering is stored in the register cfigBest. It is like that.

  When the re-evaluation from the thumb to the little finger is completed, the determination result in step SF5 is “NO”, and the process proceeds to step SF10 to determine whether or not the value of the register cfigBest remains the initial value “−1”. . If the value of the register cfigBest remains the initial value “−1”, the determination result is “NO”, the process proceeds to step SF12, the counter iOpt that counts the number of corrections is incremented, and the above step is performed. Return the process to SF3. Thereafter, steps SF3 to SF10 are repeated until the number of corrections of the counter iOpt exceeds the specified value OPT_MAX.

  In the process of repeating steps SF3 to SF10 until the number of corrections of the counter iOpt exceeds the specified value OPT_MAX, the fingering (finger number) that does not satisfy the prohibition condition and has the smallest evaluation determination value and is easy to play is stored in the register cfigBest. In step SF10, the determination result is “YES”, and the process proceeds to step SF11, where the reevaluated fingering (finger number) of the register cfigBest is registered in the fingering data me [cfig] of the corresponding sound. Finish the process.

<Operation of evaluation range determination process>
Next, the operation of the evaluation range determination process will be described with reference to FIG. When this process is executed via step SF2 (see FIG. 8) of the correction process described above, the CPU 4 advances the process to step SG1 shown in FIG. In step SG1, the fingering data me [prev] immediately before the fingering data corresponding to the prohibition condition is set to the section start pointer mef, and the fingering data me [next] next to the fingering data me [prev] is set to the section. Set to the trailing edge pointer met.
Next, in step SG2, it is determined whether or not mef [cTendency], that is, the high or low tendency cTendency of the fingering data designated by the section start pointer mef is “0”. The high / low tendency cTendency is data representing the high / low tendency of the sound string (music data), and represents an extreme value (peak) when it is “0”. Therefore, in step SG2, it is determined whether or not the section head pointer mef is an extreme value.

  If the section head pointer mef is not an extreme value, the determination result is “NO”, the process proceeds to step SG3, the section head pointer mef is set to the previous fingering data, and the process returns to step SG2. Thereafter, the section head pointer mef is traced back in the fingering data until fingering data having an extreme value cTendency is found, and fingering data having an extreme value cTendency is found, and the section head is determined. The determination result of SG2 is “YES”, and the process proceeds to Step SG4.

Subsequently, in step SG4, it is determined whether or not the section rear end pointer met is an extreme value. If the section rear end pointer met is not an extreme value, the determination result is “NO”, the process proceeds to step SG5, the section rear end pointer met is further set to the next fingering data, and the process returns to step SG4. Thereafter, the section trailing edge pointer met is incremented until fingering data having an extreme value cTendency is found, and fingering data having an extreme value cTendency is found and the section trailing edge is determined. The determination result is “YES”, and this process is finished.
As described above, in the evaluation range determination process, a sound string section in which the pitch of a sound is interchanged before and after a sound having fingering data corresponding to the prohibition condition is determined as an evaluation range.

<Operation of decision range evaluation process>
Next, the operation of the determination range evaluation process will be described with reference to FIG. When this processing is executed via the above-described correction processing step SF6 (see FIG. 8), the CPU 4 proceeds to step SH1 shown in FIG. 10, sets the initial value “−1” in the register iCost, A counter iCnt that counts the number of evaluation data is reset to zero. Further, the section start pointer mef is set in the register mp. Subsequently, in step SH2, whether mp ≠ met [next], that is, whether the fingering data specified by the section start pointer mef of the register mp does not match the fingering data specified by the section rear end pointer met , that is, the section It is determined whether the evaluation has been completed up to the rear end.

If the evaluation has not been completed up to the rear end of the section, the determination result is “YES”, and the evaluation process is executed via step SH3. The evaluation process is equivalent to the evaluation process of the first embodiment illustrated in FIG. 5, and before and after the sound having fingering data corresponding to the evaluation range determined by the above-described evaluation range determination process, that is, the prohibition condition. An evaluation value representing the ease of fingering of the evaluation target sound is generated in consideration of the evaluation target sound and the next sound in a sound string section in which the pitch of the sound is switched.
After that, the fingering of the evaluation target sound meets one of the following prohibition conditions: “Do not assign a thumb or little finger to the black keying finger”, “Reverse fingering during chord”, or “Do not exceed fingering range” In this case, the prohibition condition is solved, and an evaluation value obtained by subtracting the number of corrections iOpt + 1 from the prohibition cost NOT_PERMIT indicating that it is hard to play is set. Subsequently, after the evaluation value related to fingering between the two sounds of the evaluation target sound and the next sound is corrected according to the user operation, if the evaluation value of the corrected evaluation target sound is larger than the prohibition cost NOT_PERMIT, the evaluation target The sound evaluation value is subtracted by the number of corrections iOpt.

When such an evaluation process is completed, the process proceeds to step SH4, where the counter iCnt for counting the number of evaluation data is incremented and incremented, and the evaluation value iCost obtained by the evaluation process is accumulated. Next, in step SH5, the pointer stored in the register mp is incremented, and then the process returns to step SH2. Thereafter, steps SH2 to SH5 are repeated until the register mp reaches the section rear end pointer met . When the evaluation is completed for all the sounds in the evaluation range (the sound string section in which the pitch of the sound is switched before and after the sound having fingering data corresponding to the prohibition condition), the determination result in step SH2 is “NO”. Proceeding to step SH6, the average evaluation value iCost / iCnt obtained by dividing the accumulated evaluation value by the number of evaluation data is set as the evaluation value iCost of the fingering data corresponding to the prohibition condition.

  As described above, in the second embodiment, the evaluation range is set to the tone string interval in which the pitch of the sound is switched before and after the sound having inappropriate fingering data corresponding to the prohibition condition, and the sound in the evaluation range is set. Search for inappropriate fingering data that meets the prohibited conditions from the fingering data, perform the re-evaluation while changing the corresponding fingering data from the thumb to the little finger, do not meet the prohibited conditions, and most evaluate When the fingering (finger number) is small and easy to play, it is re-registered as new fingering data.

Then, in the evaluation process (see FIG. 5) in which re-evaluation is performed, an evaluation value representing the ease of fingering of the evaluation target sound is generated in consideration of the evaluation target sound and the next sound, as in the first embodiment. On the other hand, the fingering of the evaluation target sound is “ prohibited condition 1: do not assign thumb or little finger to black key fingering”, “ prohibited condition 2: fingering reversal during chord” and “ prohibited condition 3: fingering possible” If any of the prohibition conditions “does not exceed the width” is met, an evaluation value obtained by subtracting the number of corrections iOpt + 1 from the prohibition cost NOT_PERMIT indicating that the prohibition condition is solved and the hardest to play is set. After the evaluation value related to fingering between two sounds with the next sound is corrected according to the user operation, if the evaluation value of the corrected evaluation target sound is larger than the prohibition cost NOT_PERMIT, the evaluation value of the evaluation target sound is corrected Subtract iOpt. As a result, the evaluation determination value is relaxed in accordance with the number of corrections, and finally it is not determined to be inappropriate fingering, so that inappropriate fingering can be corrected. In addition, when the evaluation value of fingering is modified, musical interval is set as the evaluation range because the tone string section where the pitch of the sound is interchanged before and after the sound having inappropriate fingering data corresponding to the prohibited condition is set. This makes it possible to correct to natural fingering.

It is a block diagram which shows the structure of 1st Embodiment by this invention. It is a figure which shows the structure of the music data provided with music data and fingering data. It is a flowchart which shows operation | movement of a main routine. It is a flowchart which shows operation | movement of a correction process. It is a flowchart which shows operation | movement of an evaluation process. It is a flowchart which shows the operation | movement of a prohibition condition determination process. It is a flowchart which shows the operation | movement of an evaluation correction process. It is a flowchart which shows the operation | movement of the correction process by 2nd Embodiment. It is a flowchart which shows the operation | movement of the evaluation range determination process by 2nd Embodiment. It is a flowchart which shows the operation | movement of the determination range evaluation process by 2nd Embodiment.

Explanation of symbols

1 Data input part 2 Display part 3 Data designation part 4 CPU
5 ROM
6 RAM

Claims (3)

Indicates the pitch that constitutes a song, fingering information that indicates the type of finger used to play the pitch, and whether or not the finger that the fingering information represents is inappropriate for performance Storage means for sequentially storing a plurality of events including judgment information;
Of the events stored in the storage means, search means for searching for an event having the determination information determined that the determination information satisfies the prohibition condition;
When an event searched by the search means is sequentially assigned from the thumb to the little finger as the kind of finger used for playing the event, it is determined whether or not the prohibition condition is satisfied, and the event is assigned to the event. Based on fingering information representing the type of finger and fingering information included in the event following the event, an operation for calculating an evaluation value for evaluating the difficulty level when the event is played with the assigned finger is performed. An evaluation means;
A finger that satisfies the condition that the evaluation condition does not satisfy the prohibition condition and that the calculated evaluation value does not exceed a predetermined reference value is searched for by this evaluation means, and the evaluation value having the lowest performance difficulty among the searched fingers Assigning means for assigning the fingering information to the searched event by storing in the storage means fingering information representing the type of the finger having the fingering information of the searched event ;
When the assigning means does not search for a finger that satisfies the condition, the evaluation means is caused to start again and an evaluation value having a lower performance difficulty than the previously calculated evaluation value is calculated. Control means for controlling the evaluation means;
A fingering information correction device comprising: The fingering information correction device has trend data representing the pitch tendency of the pitch included in each event corresponding to each event, and the search means retrieves an event in which the trend data represents an extreme value. Including a range designating unit for designating one by one from before and after each event, and designating a range on the storage unit by the two events,
The evaluation unit determines whether or not the prohibition condition is satisfied when each of the events included in the range specifying unit is sequentially assigned from the thumb to the little finger as the type of finger used for playing the event. An evaluation value for evaluating the difficulty when playing the event with the assigned finger based on fingering information indicating the type of finger assigned to the event and fingering information included in the event following the event The fingering information correction device according to claim 1, wherein an operation for calculating the fingering information is performed. Indicates the pitch that constitutes a song, fingering information that indicates the type of finger used to play the pitch, and whether or not the finger that the fingering information represents is inappropriate for performance In a computer used as a fingering information correction device having a storage means in which a plurality of events consisting of determination information are sequentially stored,
Among the events stored in the storage means, a search step for searching for an event having determination information determined that the determination information satisfies the prohibition condition;
For the retrieved event, it is determined whether or not the prohibition condition is satisfied when the thumb to the little finger are sequentially assigned as the types of fingers used in the performance of the event, and the types of fingers assigned to the event An evaluation step of calculating an evaluation value for evaluating the difficulty level when the event is played with the assigned finger, based on fingering information representing the event and fingering information included in the event following the event When,
A finger that does not satisfy the prohibition condition and satisfies the condition that the calculated evaluation value does not exceed a predetermined reference value is searched for, and the finger having the evaluation value with the lowest performance difficulty among the searched fingers is searched. Assigning the fingering information to the searched event by storing fingering information representing the type in the storage means as fingering information of the searched event ;
Control for controlling the evaluation means so that when the finger satisfying the condition is not searched, the evaluation step is restarted and the evaluation value having a lower performance difficulty level than the previously calculated evaluation value is calculated. Steps,
Fingering information correction program to execute.

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