JP4103913B2 - Performance practice device and recording medium - Google Patents

Description

The present invention relates to a performance practice apparatus and a recording medium suitable for use in practice of chord performance.

  In personal computers and the like, applications for practicing chords have been known. In this application, performance information including a plurality of parts including chord parts is reproduced. A chord to be played (key to be pressed) is displayed on a display, an LED indicator, or the like based on the performance information of the chord part (hereinafter referred to as model performance information). In addition, as disclosed in Patent Document 1, a technique is also known in which a user can arbitrarily designate a part to be actually reproduced among parts to be reproduced. Therefore, for example, only chord parts in the performance information can be pronounced, and parts other than the chord parts can be pronounced. When the user operates a keyboard or the like during reproduction of performance information, performance information related to the operation (hereinafter referred to as input performance information) is compared with the exemplary performance information. The performance skill of the user is evaluated based on the degree to which the two match. The user can record the input performance information at any time by performing a predetermined operation.

JP-A-11-167341

However, the above-described technique has various problems as follows.
First, the user can designate the part to be actually pronounced among the parts to be played back, but the work of setting whether or not sound can be produced for each part is complicated. In addition, since beginners often do not know the contents of each part, it is difficult to appropriately set whether to pronounce. In addition, when there are a plurality of reproducible music pieces, it is convenient if a music piece can be selected based on the past performance evaluation for each music piece, but such an operation is impossible with the conventional technique. Also, if the chord of a song you want to play requires advanced techniques, beginners must practice in order from the simple chord song, not the desired song, before playing the chord. It may also reduce the willingness to practice. Furthermore, it is not always desirable that the input performance information is consistent with the model performance information, and it may be desirable to perform chords in a reversed form depending on the situation at that time. However, in the prior art, the inverted chord has been evaluated as “incorrect” because the pitch differs from the chord of the model performance information. Therefore, it has been difficult to appropriately evaluate the performance skills of the user.

  In particular, what is considered as a problem in the present application is the following point. That is, in a so-called software sound source that realizes a musical sound waveform on the software of a personal computer, a certain time lag occurs between the user's key pressing operation and the start of sound generation. No particular measures have been taken against users who feel uncomfortable with this time lag while wishing to evaluate their performance with a personal computer or the like. Further, although the user can record the input performance information by performing a predetermined operation, there is a problem that the user cannot feel a sense of achievement by performing the recording because it can be recorded unconditionally.

The present invention has been made in view of the circumstances described above, to provide a performance practice apparatus and a recording medium that subscribers enjoy a sense of accomplishment by performing a corresponding, or recording the user uncomfortable feeling in time lag It is an object.

In order to solve the above problems, the present invention is characterized by having the following configuration. The parentheses are examples.
In the recording medium according to claim 1, the second performance information is also supplied to the storage means (RAM 16) for storing the first performance information (FIGS. 8 to 10) and the external sound source (25). The performance practice device readable by the performance practice device having input means (11) for inputting the second performance information from a performance information source (21) capable of being processed and processing means (18) for executing processing based on a program A recording medium on which a program is recorded, a process of instructing the processing means (18) to start or stop playback of the first performance information stored in advance, and after the start of playback is instructed, During the period until the end of reproduction is instructed, the process of evaluating the inputted second performance information based on the first performance information (FIGS. 8 to 10) stored in advance (step SP63, SP71-74, SP 5 to SP57) and, based on the evaluation, it is determined whether or not recording of the second performance information input during a period in which the playback end is instructed and playback start and playback end is instructed again is permitted. And a step (step SP42) of recording the second performance information to be input thereafter according to the user's recording operation on the condition that this determination is affirmative (step SP41). The program is recorded.
In the performance practice apparatus according to claim 2, the second performance information is also stored in the storage means (RAM 16) for storing the first performance information (FIGS. 8 to 10) and the external sound source (25). A performance practice apparatus having an input means (11) for inputting the second performance information from a performance information source (21) capable of supplying the first performance information stored in advance. Based on the first performance information (FIGS. 8 to 10) stored in advance during the period from when the playback start is instructed to the playback end is instructed Evaluation means (steps SP63, SP71 to 74, SP55 to SP57) for evaluating the second performance information, and based on the evaluation, the playback end is instructed, and then the playback start and playback end are instructed again. Entered in the period That the second means determines whether to permit recording of the performance information (step SP41), on condition that the determination is affirmative, a record of the user and the second performance information inputted subsequently And recording means (step SP42) for recording according to the operation.

  Thus, according to the configuration in which it is possible to select whether or not to perform the sound generation process based on the second performance information based on the instruction on whether or not the sound can be generated by the user, the user who feels uncomfortable with the time lag prohibits the sound generation, Discomfort can be eliminated. Further, according to the configuration for determining whether or not recording of the second performance information to be input thereafter is permitted based on the evaluation with respect to the input second performance information, the user feels achievement by performing the recording. Can taste.

1． Configuration of Embodiment Next, the configuration of an embodiment of the present invention will be described with reference to FIG. In this embodiment, a chord practice device is realized by the general-purpose personal computer 1.
In the personal computer 1, reference numeral 18 denotes a CPU, which controls each part in the personal computer 1 via the bus 10 by a control program described later.

  A keyboard 21 supplies performance information (input performance information) to the personal computer 1 via the MIDI interface 11. Reference numeral 22 denotes an operator such as a keyboard or a mouse, and inputs various types of operation information to the CPU 18 via the detection circuit 12. Reference numeral 23 denotes a display unit that displays various types of information to the user via the display circuit 13.

  A communication interface 14 exchanges various types of information with the communication network 24. Reference numeral 15 denotes an external storage device, which includes a flexible disk drive, a hard disk drive, an MO drive, and the like, and stores an operating system, a chord practice application program, performance information, and the like. Reference numeral 17 denotes a ROM, which stores an initial program loader for starting up an operating system in the personal computer 1.

  Reference numeral 16 denotes a RAM which can be read and written by the CPU 18. Reference numeral 19 denotes a timer, which generates a timer interrupt to the CPU 18 every predetermined time. A sound board 20 converts a musical sound waveform of a digital signal generated by the CPU 18 into an analog signal. A sound system 26 generates a musical sound waveform output from the sound board 20.

  Next, reference numeral 25 denotes an external sound source that synthesizes musical sound waveforms based on performance information output from the keyboard 21. This musical sound waveform is also generated through the sound system 26. However, the external sound source 25 is not an essential component and may be omitted.

2． Example data structure
2.1. File Configuration Next, the file configuration of performance information used in this embodiment will be described with reference to FIG. The file format of the performance information is SMF (standard MIDI file) format, and the extension is “.MID” according to the convention.

  The part other than the extension is expressed in the format of “(genre name) − (level)”. Here, the “genre name” refers to a song title (or a character string formed by simplifying the song title). “Level” indicates the difficulty level of performance, and three types of “BGN (Beginner)”, “MID (Intermediate)” and “EXP (Advanced)” are provided for one genre name. .

2.2. File Format The format of each performance information file is shown in FIG. In the figure, the performance information file is composed of setting information 90 and performance information 100. Here, the setting information 90 is various kinds of initial setting information related to music reproduction, and defines the tempo value, master volume value, tone color of each part, and the like.

  The performance information 100 corresponds to the SMF format “0”, and a plurality of timing data 110, 110,... And event data 120, 120,. .. And end data 130 provided at the end.

  Timing data 110, 110,... Represents the playback timing of each event data 120, 120,. The end data 130 represents the end position of the music. The event data 120, 120,... Is information representing the contents of the event, and the contents of events for a plurality of parts to be reproduced at the same timing can also be stored.

  Specifically, one event data 120 includes one or a plurality of performance events 121, 122,. The performance events 121, 122,... Are events related to music reproduction such as note-on and note-off. For these performance events 121, 122,..., Number portions 141, 142,... Indicating respective parts (corresponding to MIDI channel numbers) are provided.

  Here, parts 4 and 5 are chord parts of a piano tone to be played with the right hand and left hand, respectively, and part 10 is a part of a percussion sound. Other parts are parts such as melodies and accompaniment sounds.

  Reference numeral 150 denotes a chord text portion, which is sequentially stored in association with the contents of parts 4 and 5 (progress of chord performance). That is, if the performance event 121, 122,... Includes a part 4 or 5 event related to a chord, the chord name (“E”, “E7”, “EM9”, etc.) is stored in a text format. . Reference numeral 151 denotes a lyric text portion. When there is a lyric character string to be uttered at the timing, the character string is stored in a text format.

2.3. Content of Chord Event Information Next, an example of chord event information corresponding to each level will be described with reference to FIGS.
In these figures, the vertical lines indicate the beat timing, and one bar consists of four beats. Characters such as “E”, “E7”, “EM9” are chord names based on the chord text portion 150, and black circles indicate note-on timing. A line segment extending from the black circle to the right in the figure indicates the duration of the chord.

  First, FIG. 8 shows an example of chord event information for beginners. In this example, the content is centered on the chord performance with the right hand, the note-on timing is set to match the beat timing as much as possible, and the chord duration is set to the beat timing interval as much as possible. It is set to be an integer multiple.

  Next, FIG. 9 is an example of chord event information for a middle class (Middle). As shown in the figure, the chord performance with the right hand is added with an attribute representing about 7th attribute. The left hand performance represents the root note. Note-on / off timing is also set to a timing that matches the atmosphere of the song to some extent, and as a result, there may be a slight deviation from the beat timing.

  Next, FIG. 10 shows an example of chord event information for an expert. The chord performance with the right hand includes up to the tension chord, and the chord performance with the left hand includes the flat and sharp note names. Note on / off timing is set so as to best match the music atmosphere.

  At each level described above, the contents of the parts 4 and 5 and the chord text portion 150 in the part are included. For the part 10 and other parts, even if the levels are different, the same information is stored as long as they are the same genre (song name).

3． Operation of the embodiment
3.1. Next, the operation of this embodiment will be described.
First, when the personal computer 1 is powered on, the initial program loader stored in the ROM 17 is executed and the operating system is started up. When a predetermined operation is performed in this operating system, the chord practice application (FIG. 2) of this embodiment is activated.

  In FIG. 2, when the process proceeds to step SP1, predetermined initial setting is performed. Here, the main window 40 (see FIG. 3) of the chord practice application is displayed on the display unit 23. Next, when the process proceeds to step SP2, the process waits until a message is received from the operating system. If any message is received here, the process proceeds to step SP3, and a routine (details will be described later) corresponding to the message is called.

  Thereafter, the processing of steps SP2 and SP3 is repeated. Here, when the window under the chord practice application (the main window 40 or the like) has focus, the keyboard event, the mouse event, etc. in the operation element 22 are notified from the operating system to the chord practice application as the message. Similarly, even when various interruptions such as timer interruptions occur, the fact is notified to the chord practice application. Details of individual processes executed in accordance with the event that occurs will be described later.

  Here, details of the main window 40 will be described. In FIG. 3, reference numeral 41 denotes a chord progression display section. Based on the chord text section 150 in the performance information being reproduced, chord names of chords to be played with the right hand and left hand, note-on timings (black circles) of these chords, Is displayed. Further, at the bottom of the chord progression display section 41, the text of the lyrics is displayed based on the lyrics text section 151. As in FIGS. 8 to 10, the vertical line indicates the beat timing.

  The chord progression display section 41 displays a measure that is currently being played, and the contents are updated as the music progresses. Reference numeral 51 denotes a keyboard indicator which displays a figure with a keyboard and lights up a key corresponding to a chord to be played now. 42 is a solo button, and 43 is a mute button, each of which sets the operation mode to a solo mode or a mute mode (details will be described later).

  Reference numeral 44 denotes a song select button, which instructs the display of the selection window 60 (FIG. 4). Reference numeral 45 denotes a MIDI setup button, which sets whether or not input performance information from the keyboard 21 is output via the sound board 20. Reference numeral 47 denotes a start button, which instructs the start of reproduction of performance information. Reference numeral 49 denotes a stop button, which instructs to stop reproduction of performance information.

  Specifically, in this embodiment, a RUN flag indicating whether or not performance information is automatically reproduced is provided. When the start button 47 is pressed, the RUN flag is set to “1”, and the stop button 49. When is pressed, the RUN flag is set to “0”. 46 is a rewind button and 48 is a fast-forward button. Reference numeral 50 denotes a REC button, which instructs recording of input performance information.

3.2. Event processing of the MIDI setup button 45 When the MIDI setup button 45 is clicked with the mouse, the routine shown in FIG. 11 is started. In the figure, when the process proceeds to step SP11, the SS flag is inverted. Note that the SS flag is set to “1” at the time of initial setting (step SP1). Next, when the process proceeds to step SP12, it is determined whether or not the SS flag is “1”.

  If "YES" is determined here, the process proceeds to step SP13, and the sound of the input performance information input via the MIDI interface 11, that is, use of the internal software sound source is permitted. On the other hand, if “NO” is determined in step SP12, the process proceeds to step SP14, and the pronunciation of the input performance information is prohibited. This routine ends. Therefore, every time the user clicks the MIDI setup button 45 with the mouse, the user can switch on / off the sound generation using the software sound source of the input performance information.

  Here, the significance of switching on / off the pronunciation for the input performance information will be described. In a so-called software sound source that realizes a musical sound waveform on the software of a personal computer as in the present embodiment, a certain time lag occurs between the user's key pressing operation and the start of sound generation. On the other hand, it is also true that there are users who feel uncomfortable. Therefore, when the user can use the external sound source 25 and the performance is satisfactory, it is preferable to use the external sound source 25 having a quick response.

  Therefore, in the present embodiment, when the user desires, it is possible to synthesize a musical sound waveform by the external sound source 25 based on the performance information of the keyboard 21 and to generate a sound from the sound system 26 without using the personal computer 1. It is what. Furthermore, the sound generation of the external sound source 25 and the software sound source can be switched by a simple operation of clicking the MIDI setup button 45. Moreover, the input performance information is sent to the personal computer 1 via the MIDI interface 11 regardless of whether or not the external sound source 25 is used. Therefore, the evaluation (details will be described later) of the input performance information is personal in any case. It is executed in the computer 1.

3.3. Event processing of solo button 42 and mute button 43 When solo button 42 or mute button 43 is clicked with the mouse, the routine shown in FIG. 12 is started. In the figure, when the process proceeds to step SP21, an operation mode is selected according to the pressed button, and a playback part is set. That is, when the solo button 42 is pressed (solo mode), only the parts 4 and 5 related to chords and the part 10 related to percussion sounds are set as playback parts (parts that are actually pronounced).

  On the other hand, when the mute button 43 is pressed (mute mode), all parts other than parts 4 and 5 are set as playback parts. Here, the significance of reproducing the percussion sound of part 10 in the solo mode will be described. Originally, the solo mode is an operation mode for the user to practice while listening to the chords of the model performance information. However, when only the chords are actually reproduced, there is a problem that it is difficult to grasp the rhythm.

  Therefore, in this embodiment, the percussion sound is reproduced even in the solo mode so that the user can easily grasp the sense of rhythm. Moreover, since such an operation can be performed by a one-touch operation of “clicking the solo button 42 with a mouse”, the user does not need to know which part is a chord and which part is a percussion sound, and is suitable even for beginners. Reliable part selection can be carried out reliably and quickly.

3.4. Event Processing of Song Select Button 44 When the song select button 44 is clicked with the mouse, a selection window 60 shown in FIG. In FIG. 4, reference numeral 64 denotes a genre display unit, which displays a genre name that is a song name or a simplified character string. In the illustrated example, ten genre display portions 64 are provided along the vertical direction of the selection window 60.

  Reference numeral 65 denotes a selection button for selecting performance information for beginners, and ten buttons are provided in the vertical direction corresponding to each genre display section 64. Reference numeral 66 denotes a recording indicator which is turned on when an ENABLE flag (details will be described later) provided for each piece of performance information is “1”, and turned off when it is “0”. The ENABLE flag is a flag indicating whether or not input performance information from the MIDI interface 11 may be recorded. Reference numeral 67 denotes a score display unit, which displays the highest score obtained by the user for each piece of performance information for beginners in a 10-step histogram.

  As with beginners, a selection button 68 for a middle class, a recording indicator 69, a score display section 70, a selection button 71 for an expert, a recording indicator 72, and a score display section 73 are sequentially selected. It is arranged along 60 lateral directions. Thereby, the user can overlook whether or not the past highest score and input performance information can be recorded on a matrix composed of “genre” in the vertical direction and “level” in the horizontal direction.

  Reference numeral 63 denotes a selected genre name display section for displaying the genre name of the selected performance information. Reference numeral 76 denotes an OK button, which is provided to confirm the selected performance information and close the selection window 60. A cancel button 75 is provided to discard the selection result and close the selection window 60.

  Reference numeral 74 denotes a detailed score display unit that displays the highest score obtained by the user for the selected performance information. The above-described score display units 67, 70, 73 display the maximum score of 100 points in 10 levels, but the detailed score display unit 74 displays up to one point unit.

  Here, when any of the selection buttons 65, 68, 71 is clicked with the mouse, the routine shown in FIG. 13 is started. In the figure, when the process proceeds to step SP31, all the current selection states are reset. Next, when the process proceeds to step SP32, the performance information corresponding to the newly clicked selection buttons 65, 68, 71 is selected. That is, the selection buttons 65, 68, 71 are turned on, and the display of the selected genre name display unit 63 and the detailed score display unit 74 is also updated accordingly.

  Accordingly, each selection button 65, 68, 71 is exclusively selected (lighted) when clicked. In the illustrated example, performance information for beginners of the first genre “BRCK NVC” is selected. When the OK button 76 is pressed after the performance information is selected in this way, the performance information selected as a result is confirmed and the selection window 60 is closed. Thereby, the main window 40 is displayed again.

  At that time, the chord progression display section 41 displays the performance timing based on the contents of parts 4 and 5, the chord name based on the chord text section 150, and the contents of the lyrics text section 151. Here, the performance timing based on the contents of the parts 4 and 5 and the chord name based on the chord text portion 150 are displayed in the same format as that shown in FIGS. In addition, when the corresponding lyric text portion 151 exists, the lyric text is displayed together (see FIG. 3).

3.5. Event processing of the REC button 50 When the REC button 50 is clicked with the mouse in the main window 40, the routine shown in FIG. 14 is started. In the figure, when the process proceeds to step SP41, it is determined whether or not the ENABLE flag relating to the selected performance information is “1”. If “NO” is determined here, the present routine is ended, so that substantial processing is not performed.

  On the other hand, if “YES” is determined, the process proceeds to step SP42, and the REC flag is set to “1”. The REC flag is a flag indicating whether or not the input performance information is recorded, and is set to “0” in the initial state. Thus, the processing of this routine ends.

3.6. Timer interrupt processing (during playback)
In this embodiment, a timer interrupt is generated by the timer 19 every predetermined time. When this timer interrupt occurs, the routine shown in FIG. 15 is started. In the figure, when the process proceeds to step SP51, it is determined whether or not the RUN flag is “1”. If “NO” is determined here, the processing of this routine is immediately terminated.

  On the other hand, if the RUN flag is set to “1”, such as when the start button 47 is pressed first, “YES” is determined, and the process proceeds to step SP52. Here, the performance information being reproduced is read, and the event processing of the reproduction part at the current timer interrupt timing is executed. That is, synthesis of musical sound waveforms is started according to the event to be generated this time, and the synthesized musical sound waveforms are generated via the sound board 20 and the sound system 26.

  At that time, if the operation mode is the solo mode, the musical sound waveform is synthesized for the parts 4 and 5 related to the chord and the part 10 related to the percussion sound. A musical sound waveform is synthesized. If there is no event to be reproduced for the current timer interrupt timing, no substantial processing is performed in step SP52.

  Next, when the process proceeds to step SP53, a performance guide is performed based on the chord information at the current timer interrupt timing, that is, the performance information according to parts 4 and 5. That is, the display contents of the keyboard indicator 51 are updated based on the performance information, and the chord names and lyrics in the chord progression display section 41 are updated based on the contents of the chord text section 150 and the lyrics text section 151.

  If there is no chord information, chord text portion 150 or lyric text portion 151 to be reproduced at the current timing, substantial processing is not performed in step SP53. Next, when the process proceeds to step SP54, it is determined whether or not the event in the current performance information is the end data 130. If the performance information being reproduced has not yet reached the end data 130, “NO” is determined here, and the processing of this routine ends.

3.7. Keyboard event interruption When input performance information (key-on / key-off event of the keyboard 21) is supplied to the MIDI interface 11, an interrupt is generated in the CPU 18 based on this and the routine shown in FIG. 16 is started. In the figure, when the process proceeds to step SP61, a key pressing pattern for a key that is currently pressed (a key-on event has occurred and a corresponding key-off event has not yet occurred) is created.

  An example of this key pressing pattern is shown in FIG. In the figure, the key pressing pattern is composed of 12 bits, and each bit corresponds to 12 pitch names (C, C #, D,..., A #, B). The bit of the pitch name corresponding to the key pressed here is set to “1”, and the other bits are set to “0”.

  Returning to FIG. 16, when the process proceeds to step SP62, it is determined whether or not the RUN flag is “1” (whether or not the performance information is being reproduced). If "YES" is determined here, the process proceeds to a step SP63. Here, the subroutine shown in FIG. 17 is called, and it is determined whether or not the key-on / key-off event related to the input performance information is correct by comparison with the model performance information.

  Details will be described. In FIG. 17, when the process proceeds to step SP71, whether or not the key-on / key-off event occurrence timing falls within an allowable range (for example, ± 300 msec) of any event timing of the chord model performance information (parts 4 and 5). Is determined. If it fits, it is determined as “YES”, and the process proceeds to step SP72.

  As described above, in this embodiment, chord names are stored in the chord text section 150 for the chords of the model performance information. And if a chord name is determined, the pitch name which comprises the chord is uniquely determined. Therefore, in this embodiment, a 12-bit chord pattern is created in advance for each chord name and stored in the external storage device 15. As shown in FIG. 18B, each code pattern has the same format as the key pressing pattern (FIG. 18A).

  In step SP72, the corresponding chord pattern is read based on the chord text portion 150 in the event of the model performance information. Next, when the process proceeds to step SP73, it is determined whether or not the key pressing pattern matches the read code pattern. If “YES” is determined here, the process proceeds to step SP 74, and “correctly answered” is recorded in a predetermined area (performance evaluation buffer) in the RAM 16 for the event of the model performance information.

  As described above, in step SP73, it is determined that the pitch names of the input performance information and the model performance information match and, for example, the key code or the like is not compared as in the prior art. One. By making such a determination, it is determined that the user has “correctly answered” even when the user performs the turn performance on the model performance information. This is because it may be desirable for the user to play the chord in a reversed form depending on the situation of the user. As described above, in this embodiment, it is possible to make an accurate determination while expanding variations of the chord performance based on the turning form.

  When the above steps are completed, the process returns to the keyboard event interrupt routine (FIG. 16). If the timing of the key-on / key-off event of the input performance information is outside the allowable range for any event of the model performance information, or if the key pressing pattern does not match the chord pattern, In step SP71 or SP73, “NO” is determined, and the processing returns to the keyboard event interrupt routine (FIG. 16) without recording “correct answer” in the performance evaluation buffer.

  By the way, if the RUN flag is “1” and it is within the allowable range of any event timing in the model performance information (parts 4 and 5), the determination in step SP73 described above is a key-on of the input performance information multiple times. / Can be executed for a key-off event. Therefore, within this allowable range, even if the key is operated many times, if the correct key is pressed at least once, “correct answer” is recorded in the performance evaluation buffer and reflected in the score. It will be.

  Next, when the processing proceeds to step SP64 in FIG. 16, a tone generation / mute tone processing is performed based on the key-on / key-off event of the input performance information. Next, when the process proceeds to step SP65, it is determined whether or not the REC flag is “1”. If “YES” is determined here, the event of the input performance information is recorded in a file in the external storage device 15. This completes the keyboard event interrupt routine processing.

3.8. Timer interrupt processing (end of playback)
As described above, in this embodiment, the timer interrupt processing routine (FIG. 15) is activated at predetermined time intervals, and the performance information is automatically reproduced. Here, when the end data 130 at the end of the performance information is read, “YES” is determined in step SP54, and the process proceeds to step SP55.

  Here, the contents of the performance evaluation buffer are read out, and the evaluation for the user performance is performed based on the number of erroneous key input times, the number of correct answers, the time required to complete the correct key pressing, the level of the selected performance information, etc. (Score) is calculated. This evaluation is displayed in the scoring window shown in FIG. In the figure, reference numeral 80 denotes a score display unit, which displays the score obtained by the user. Reference numeral 81 denotes a message display unit which displays a message of a character string corresponding to the acquired score. Reference numeral 82 denotes an OK button, which is clicked with the mouse to close the scoring window.

  Returning to FIG. 15, when the process proceeds to step SP56, it is determined whether or not the acquired score exceeds a predetermined value. If “YES” is determined here, the ENABLE flag of the performance information is set to “1”. As a result, the user can subsequently record the input performance information by operating the REC button 50 for the performance information. If “NO” is determined in step SP56, step SP57 is skipped.

  Next, when the process proceeds to step SP58, the score acquired this time is compared with the highest score in the past, and if the score acquired this time exceeds the maximum score, the score acquired this time is externally set as a new highest score. It is stored in a predetermined file in the storage device 15. As described above, when the ENABLE flag or the highest score is updated in this routine, when the selection window 60 is subsequently opened, the recording indicators 66, 69, 72, and the score display section 67 are based on the newly set state. , 70, 73, etc. are displayed.

Four. Modifications The present invention is not limited to the above-described embodiments, and various modifications can be made as follows, for example.
(1) In the above embodiment, performance information of a plurality of levels corresponding to one genre name (song name) is stored in an independent file, but different information for each level (for example, chord text part 150 and part 4, part 4) 5 performance information) may be stored independently, and the same information (for example, performance information other than the lyrics text portion 151 and parts 4 and 5) may be stored in a common file at each level. In this case, at the time of reproduction, a common file and any one of the individual files for each level are read out together. Thereby, the required storage capacity can be reduced.

(2) In the above-described embodiment, three levels of beginner, intermediate, and advanced are provided as performance information levels. However, two levels of beginner and advanced may be provided, or four or more levels may be provided. In short, it is only necessary to provide a plurality of pieces of performance information with different difficulty levels of practice content for one genre name.

(3) In the above embodiment, the chord text portion 150 is provided in the performance information and the chord name is specified, but the chord text portion 150 is not provided, but based on the performance events 121, 122,. The chord name may be specified. This can be done by referring to the key code included in the note on / off event according to parts 4 and 5.

  That is, since the key codes are numbers assigned in ascending order to all 88 keys, for example, the “remainder” obtained by dividing this by “12” is a value corresponding to each pitch name. Then, a 12-bit bit string is created in which the bit corresponding to the ongoing pitch name (note-on has occurred and note-off has not yet occurred) is set to “1”, and the other bits are set to “0”. By searching for a chord pattern that matches the bit string (FIG. 18 (b)), it is possible to specify the chord name to be played at any time during the performance.

It is a block diagram of the chord practice apparatus of one Example of this invention. It is a flowchart of the main routine of the said Example. It is a figure which shows the main window 40 in the said Example. It is a figure which shows the selection window 60 in the said Example. It is a figure which shows the score window in the said Example. It is a figure which shows the file structure of the performance information in the said Example. It is a figure which shows the data structure of the performance information in the said Example. It is a figure which shows an example of the chord event information for beginners. It is a figure which shows an example of the chord event information for intermediate persons. It is a figure which shows an example of the chord event information for advanced users. 4 is a flowchart of an event processing routine of a MIDI setup button 45. 4 is a flowchart of an event processing routine of a solo button 42 and a mute button 43. It is a flowchart of an event processing routine of selection buttons 65, 68, 71. 5 is a flowchart of an event processing routine for a REC button 50. It is a flowchart of a timer interrupt processing routine. It is a flowchart of a keyboard event interruption routine. It is a flowchart of a key press determination subroutine. It is a figure which illustrates a key press pattern and a code pattern.

Explanation of symbols

    DESCRIPTION OF SYMBOLS 1 ... Personal computer, 10 ... Bus, 11 ... MIDI interface, 12 ... Detection circuit, 13 ... Display circuit, 14 ... Communication interface, 15 ... External storage device, 16 ... RAM, 17 ... ROM, 18 ... CPU, 19 ... timer, 20 ... sound board, 21 ... keyboard, 22 ... operator, 23 ... display unit, 24 ... communication network, 25 ... external sound source, 26 ... Sound system, 40 ... main window, 41 ... chord progression display, 42 ... solo button, 43 ... mute button, 44 ... song select button, 45 ... MIDI setup button, 46 ... rewind button, 47 …… Start button, 48 …… Fast-forward button, 49 …… Stop button, 50 …… Rec button, 51 …… Keyboard indicator 60 ... Selected window 63 ... Selected genre name display part 64 ... Genre display part 65,68,71 ... Select button 66,69,72 ... Record indicator 67,70,73 ... ... Score display section, 74 ... Detailed score display section, 75 ... Cancel button, 76 ... OK button, 80 ... Score display section, 81 ... Message display section, 82 ... OK button, 90 ... Setting information , 100 ... performance information.

Claims (2)

Based on a program, a storage means for storing the first performance information, an input means for inputting the second performance information from a performance information source capable of supplying the second performance information to the external sound source, and a program A recording medium that records the program readable by a performance practice device having processing means for executing processing.
Instructing to start or end playback of the first performance information stored in advance;
A process of evaluating the input second performance information based on the first performance information stored in advance during a period from when the playback start is instructed to when the playback end is instructed; ,
Determining whether to permit recording of second performance information input during a period in which the end of playback is instructed and playback start and end of playback are instructed again based on the evaluation;
On the condition that this determination is affirmative, a program having a procedure for executing the process of recording the second performance information to be input thereafter according to the recording operation of the user is recorded. A recording medium recording the program readable by the practice device. A performance practice device comprising storage means for storing first performance information, and input means for inputting the second performance information from a performance information source capable of supplying the second performance information to an external sound source. Because
Means for instructing reproduction start or reproduction end of the first performance information stored in advance;
Evaluation means for evaluating the input second performance information based on the first performance information stored in advance during a period from when the reproduction start is instructed to when the reproduction end is instructed When,
Means for determining whether to permit recording of the second performance information input in a period in which the end of playback is instructed and the start of playback and the end of playback are instructed again based on the evaluation ;
A performance practice device comprising: recording means for recording second performance information to be input thereafter in accordance with a user's recording operation on condition that this determination is affirmative.

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