JP3873880B2 - Performance assist device and performance assist program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a performance assisting device for supporting a performer's arpeggio performance in an electronic music device such as an electronic musical instrument.
[0002]
[Prior art]
An arpeggio performance device that inputs performance information for instructing the pronunciation of one or more performance sounds from a keyboard and outputs performance information for causing the performance sounds having the pitches of the performance sounds to be distributedly generated based on a predetermined arpeggio pattern For example, it is known from Patent Document 1 and the like.
Arpeggio performance is performed by playing notes of notes corresponding to multiple keys, such as one key operated on the keyboard or a key with a pitch that is a chord, while the keys are being pressed. The sound is distributed in one note at a time.
[0003]
One or a plurality of pitches indicated by the input performance information is directly generated as a pitch constituting an arpeggio performance. Therefore, the performer has to input one or more pitches from the keyboard that match the appropriate chords (chords) that change as the song progresses. If a key with the wrong pitch that does not match the appropriate chord is played, the arpeggio will be played with an inappropriate pitch.
In this way, playing a key that matches a chord requires a certain level of performance skills, so it is difficult for beginners to master the arpeggio performance device.
[0004]
On the other hand, when the performer plays the melody and plays the melody, if the pressed key does not match the chord information of the song, it is converted to a pitch that matches the chord information that conditions the performance. An electronic musical instrument that produces a performance sound is known (for example, see Patent Document 2).
Therefore, when a performer performs an arpeggio performance, it paid attention to that the arpeggio performance by a beginner can be supported by applying the above-described technique for conditioning performance with chord information.
[0005]
[Patent Document 1]
JP-A-10-288888 (10th and 14th paragraphs)
[Patent Document 2]
Japanese Patent Laid-Open No. 5-27757 (see paragraphs 10 and 27)
[0006]
[Problems to be solved by the invention]
The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a performance assisting device and a performance assisting program that enable even beginners to easily perform an arpeggio performance with a pitch that matches a chord. It is.
[0007]
[Means for Solving the Problems]
The present invention according to claim 1 is a performance control device for inputting performance information for instructing the pronunciation of one or a plurality of input pitches and for outputting performance information for instructing an arpeggio performance. When the information input means, the chord information input means for inputting the chord information that conditions the performance, and the performance information for instructing the pronunciation of the one or more input pitches are input, An arpeggio performance information output that outputs a pitch conversion means for converting to an output pitch suitable for the chord information, an arpeggio pattern input means, and performance information that instructs pronunciation of each output pitch according to the input arpeggio pattern It has a means.
Accordingly, the pitch that constitutes the arpeggio performance is obtained by converting the input pitch indicated by the input performance information into the pitch that matches the chord information by the chord information that conditions the input performance. . As a result, even a beginner who is difficult to play a key suitable for a chord can perform an arpeggio with a pitch suitable for the chord.
[0008]
According to a second aspect of the present invention, in the performance assisting device according to the first aspect, the pitch converting means instructs the start of sound generation of the one or more input pitches based on the input performance information. When new chord information is input while sound is being generated, each input pitch is converted into an output pitch that matches the new chord information.
Therefore, even if new chord information is input during sound generation, the pitch conversion means outputs the converted pitch so that each input pitch matches the new chord information. Performance information that generates sound is not output.
[0009]
According to a third aspect of the present invention, there is provided performance support for causing a computer to input performance information instructing pronunciation of one or a plurality of input pitches and outputting performance information instructing arpeggio performance. When a performance information input step, a chord information input step for inputting chord information that conditions the performance, and performance information for instructing pronunciation of the one or more input pitches are input, A pitch conversion step for converting the pitches into output pitches that match the input chord information, an arpeggio pattern input step, and performance information for instructing pronunciation of each output pitch are input. An arpeggio performance information output step for outputting according to the arpeggio pattern is provided.
Therefore, the performance assisting device according to claim 1 can be realized by a computer.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a functional block diagram for explaining an embodiment of the present invention.
In FIG. 1, 1 is a performance information supply unit, 2 is a chord information supply unit, 3 is a pitch conversion unit, 4 is an arpeggio performance information output unit, and 5 is an arpeggio pattern generation unit.
The performance information for instructing the pronunciation of one or a plurality of input pitches is input, and the performance information for instructing the arpeggio performance is output.
The performance information supply unit 1 is a performance operator such as a keyboard played by a player's key pressing operation, and supplies performance information based on the player's key pressing operation. This performance information indicates the start of sound generation and the pitch of the performance sound corresponding to the operated key.
[0011]
The chord information supply unit 2 outputs, for example, chord information instructing a chord suitable for the performance of a song to be played according to the progress of the performance of the song. For example, it is a chord information storage unit in which sequence data is stored so that the time at which this chord information should be output (the time that elapses with the progress of the performance time) can be known.
More specifically, song data including sequence data of chord information is stored. Chord information is reproduced and supplied as the performance progresses. This song data includes parts played by the user or parts other than the part played by the user in addition to the chord information sequence data.
[0012]
When the performance information instructing the pronunciation of one or a plurality of input pitches is input from the performance information supply unit 1, the pitch conversion unit 3 sets each input pitch from the input performance information. Previously, it is converted into an output pitch suitable for the chord information input from the chord information supply unit 2 and supplied to the arpeggio performance information output unit 4.
As a result, only the pitches that match the chord information that conditions the performance are input to the arpeggio performance information output unit 4.
In addition, performance information that instructs the pronunciation of an output pitch that matches the input chord information can be output to a normal output destination other than the arpeggio performance information output unit 4, such as a sound source.
When a performer intends to perform an arpeggio performance, usually, a plurality of keys are simultaneously pressed to start sound generation and a pitch of a plurality of input performance sounds. As a result, the same number of pitches as the input performance sound (or less than or equal to the number) may be output in conformity with the input chord information.
[0013]
On the other hand, the chord information may be changed (chord change) while the performer is pressing any key. Such a situation is unlikely to be considered by a skilled performer, but for beginners, especially when chord information is automatically read out, even at the performance timing that is a break at which new chord information is read out, the key is pressed. Can be.
Since the pitch of the performance sound is usually determined at the time of key depression start (key-on), even if new chord information is input during the key depression, the pitch conversion unit 3 ignores the original chord information. If the pitch suitable for is continued, the unnatural pitch will continue to be output based on the new chord information. If it does so, the performance information which generates an unnatural arpeggio performance sound will be output.
In order to prevent such a problem from occurring, the pitch conversion unit 3 generates a new chord when the start of sounding of one or more input pitches is already instructed by the input performance information. When information is input, each input pitch is converted into an output pitch suitable for new chord information and output to the arpeggio performance information output unit 4.
[0014]
Here, as a method for converting the input pitch into a pitch suitable for the chord information that conditions performance, for example, a chord constituent tone, a scale tone, or a bass tone, for example, the method is the same as in Patent Document 2 of the prior art. The conversion table is used. In this conversion table, pitch candidates that match the pitch of the input performance sound are shown for each chord type corresponding to the chord information. Among these candidates, the pitch closest to the input pitch is set as the output pitch.
More specifically, a conversion table that represents which pitch name the pitch name of the input pitch (for 12 tones within one octave) is converted into may be used. Alternatively, it is sufficient to use a conversion table that indicates for each chord type which pitch is to be converted for all input note numbers from 0 to 127. A pitch name candidate that matches the pitch name of the input pitch is indicated for each chord type, and a pitch corresponding to a pitch name candidate that is closest in distance from the pitch name of the input pitch is output. At that time, the pitch names corresponding to the closest pitch names may be output by including the pitch names one octave above and one pitch below the conversion table as candidates.
[0015]
Originally, when the input pitch is included in the suitable candidates, the input pitch itself is selected and output. In this specification, such a case is referred to as pitch conversion.
Also, if there are two pitches (pitch names) that are closest in distance to the input pitch (or pitch name), the output pitch is set to be higher than the input pitch (or pitch name). You may decide what kind of method, such as predetermining whether to raise or lower, or selecting up or down at random.
[0016]
The pitch conversion method is not limited to using the conversion table as described above. Various data structures of the conversion table are conceivable, and the conversion table may be converted to a pitch suitable for a chord by calculation without using the conversion table. Also, the pitch conversion rule may be varied according to the pitch range of the input performance sound. For example, the conversion may be such that only the bass sound is output in the bass part, only the chord component sound is output in the middle part, and the scale sound is output in the high part.
If multiple input pitches result in the same pitch, either pitch may be re-converted to another candidate tone, or it may not be pronounced (ie, the number of notes will be reduced) It may be. Alternatively, the sound may be re-sound at the same pitch.
In any method, in addition to chord information, key information may be supplied. The pitch can be converted in consideration of the key, and a more appropriate pitch can be obtained. In addition to directly inputting the key information itself, the key information may be estimated and input from the progression of chords in the song.
The arpeggio performance information output unit 4 converts one or a plurality of input performance sounds having the pitch converted by the pitch conversion unit 3 into a plurality of arpeggio performance sounds according to the arpeggio pattern input from the arpeggio pattern supply unit 5. These are sequentially output to a processing device such as a sound source or song data storage device. The sound source generates a musical sound waveform based on the input performance information.
[0017]
FIG. 2 is an explanatory diagram illustrating an example of a note ranking buffer and an arpeggio pattern.
The arpeggio performance information output unit 4 stores the pitch information output from the pitch conversion unit 3 in the note ranking buffer shown in FIG. To this note rank buffer, pitch information output from the pitch converter 3 is sequentially input in accordance with a predetermined rule regarding the storage order.
In the example shown in FIG. _Major Is input from the pitch converter 3 as pitch information (C4), pitch information (E4), and pitch information (G4). Among the plurality of pitch information, the pitch information (C4) is in the note ranking 1, the pitch information (E4) is in the note ranking 2, and the pitch information (G4) is in the note ranking in descending order. As shown in FIG. N is the total number of input pitches and may be any positive integer, and one case is allowed. As the storage order, in addition to the above-described low-pitched order, the high-pitched order, the input order of a series of pitch information from the pitch conversion unit 3, and random (the order is changed every time a series of pitch information is input). Rules can be adopted.
[0018]
The arpeggio pattern supply unit 5 supplies an arpeggio pattern shown as an example in FIG. This arpeggio pattern is a pattern in which a pair of data of timing data and note rank data is described in time series. For example, the arpeggio pattern is a pattern having a length from one measure to several measures.
The timing data indicates the start of sound generation of the pitch corresponding to the paired note order, such as the absolute time from the start time of the arpeggio pattern or the relative time from the sound generation start timing of the previous note order. That is, new note data is started to be sounded by each timing data, and if there is note data that was being sounded until then, this sound is ended.
After the last note order of the arpeggio pattern is read out, it waits until the bar line timing, and then returns to the first note order.
[0019]
The arpeggio performance information output unit 4 determines the pitch corresponding to the note order specified by each note order data with reference to the note order buffer of FIG.
In the example of FIG. 2B, note order data is set as 1 → 3 → 2 →. With reference to the note ranking buffer in FIG. 2A, the pitches at each timing are obtained as C4 → G4 → E4 →.
For example, in the MIDI standard, the arpeggio performance information output unit 4 outputs a “note on” message as performance information for starting sound generation of each determined pitch. At that time, in the MIDI standard, a “note-off” message is output as performance information for instructing the end of the pronunciation of the pitch that was being pronounced.
It should be noted that performance information may be output so that a rest period is provided after the end of the tone generation that was being sounded until the next order of pitches is started.
The format of “Arpeggio Pattern” is not limited to that illustrated in FIG.
For example, note order data in the arpeggio pattern shown in FIG. 2B may include information on gate time (sound length) and velocity (sound intensity). Generates sounds according to these gate times and velocities.
Moreover, it is good also as an arpeggio pattern that the sound generation period of several sound overlaps not only what arpeggio sounds are sounded without overlapping.
[0020]
Further, for example, at each sound generation timing specified by the timing data, it may have information defining the direction (upward direction, downward direction) of scanning the “note order buffer” shown in FIG. Other formats may be used.
If there is information indicating the upward direction corresponding to the timing data b, the performance sound of the pitch of the note rank b corresponding to the timing data b is started and then the timing in the next upward direction is started. After the elapse of the time designated by the data a, the sounding of the performance sound having the note rank a corresponding to the timing data a is started.
[0021]
The rule of note order shown in FIG. 2A and the arpeggio pattern shown in FIG. 2B can be arbitrarily changed, or the combination of both can be arbitrarily changed. The user can change before the start of the arpeggio performance or during the performance. As a result, an arpeggio performance intended for chance can be performed.
Different “arpeggio patterns” may be played back simultaneously to obtain different arpeggio performance sounds. In addition, the player may arbitrarily select the “arpeggio pattern”, or may automatically select the “arpeggio pattern” according to the “tone color” specified by the player or the like. For example, “tone” and “arpegio pattern” are stored as a pair.
The arpeggio pattern input from the arpeggio pattern supply unit 5 shown in FIG. 1 and the “chord information” input from the chord information supply unit 2 (reproduced from a sequence data file similar to the song data (song) file) ) The playback tempo may be a default tempo set in advance for each, or may be arbitrarily set by the performer. Alternatively, even if the performance information supply unit 1 automatically detects the tempo of the performance from the performance of the performer's keyboard or the like, and controls the playback tempo of the above-mentioned “arpegio pattern” or “chord information” with the detected tempo. Good.
[0022]
In the above description, the performance information supply unit 1 shown in FIG. 1 is a keyboard. However, the performance information supply unit 1 may be a storage device that stores song data played by a performer or the like in advance.
Moreover, if the performance timing output from the arpeggio performance output unit 4 is added with performance timing, it can be stored in the storage device as song data.
When the performance information supply unit 1 and the chord information supply unit 2 are both storage devices and the arpeggio performance output unit 4 stores the performance information in the storage device, the pitch conversion unit 3 and the arpeggio performance output unit 4 Similarly, in addition to processing according to the performance progress tempo, the input performance information and chord information are synchronized based on the performance timing information based on the relative time or absolute time of the event occurrence described above on the performance time axis. The processing can be completed in a shorter time than the real-time performance time.
[0023]
When the arpeggio performance information output unit 4 is outside the apparatus having the pitch conversion unit, the performance information output by the pitch conversion unit 3 is as described above as the performance information instructing the pronunciation of a certain output pitch. Output a “note on” message according to the MIDI standard.
However, if the pitch converter 3 and the arpeggio performance information output unit 4 are in the same device, it is not necessary to output performance information in accordance with the MIDI standard. The sound source parameters used in the apparatus may be output to indicate the “note on” function.
Similarly, when the arpeggio performance information output unit 4 is in the same device as the sound source, it is not necessary to output performance information according to the MIDI standard. It is only necessary to output a tone generator parameter for controlling a tone generator circuit or a software tone generator program to indicate a “note on” function.
[0024]
FIG. 3 is a hardware configuration diagram for realizing one embodiment of the present invention.
In the electronic musical instrument, a case where a performance assist function is realized by executing a program will be described.
In the figure, 11 is a bus, 12 is a CPU (Central Processing Unit), 13 is a ROM (Read Only Memory), 14 is a RAM (Random Access Memory), and 15 is a timer. The RAM 14 is provided with a working area for the CPU 12. The ROM 13 stores preset data as well as a control program for operating the CPU 12. The timer 15 defines the cycle of arithmetic processing of the CPU 12, and the CPU 12 receives a timer event signal from the timer 15 and performs processing such as automatic performance.
Reference numeral 16 denotes a performance operator (keyboard), which outputs performance information having data such as key pressing timing, key number (pitch), and key release timing. The detection circuit 17 detects the key depression state of the performance operator (keyboard) 16. Note that performance information may be loaded into the RAM 14 from a music data file stored in the ROM 13 or the external storage device 25.
Reference numeral 18 denotes a setting operator (switch or the like), for example, an operator for performing various selections and settings such as parameter setting and song data recording / playback control. The operation state is detected by the detection circuit 19.
A display circuit 20 outputs image data and image control data to the display 21.
[0025]
22 is a sound source circuit, 23 is an effect circuit, and 24 is a sound system.
The sound source circuit 22 inputs sound source parameters and the like as performance information whose pitch has been converted from the CPU 12 through the bus 11 and synthesizes the performance sound with a waveform. The effect circuit 23 adds an effect such as reverb or the like to the performance sound and performs mixing processing, supplies the sound to the sound system 24, and outputs it from the speaker.
The tone generator circuit 22 is not limited to using dedicated hardware, but may be configured using a DSP (Digital Signal Processor) and a microprogram, or the CPU 12 may perform waveform synthesis using a software tone generator program. May be.
Reference numeral 25 denotes an external storage device such as a flash memory or an FDD (Flexible Disk Drive).
Reference numeral 26 denotes a MIDI (Musical Instrument Digital Interface) interface, which connects various MIDI devices 27 such as an external tone generator, a MIDI keyboard and the like to the bus 11. Not only a dedicated MIDI interface but also a general-purpose interface may be used for direct connection or LAN (Local Area Network) connection.
A communication interface 28 is connected to a server, a personal computer 30 or the like via a communication network 29 such as the Internet, and inputs / outputs control programs and performance information.
[0026]
Performance information may be input in real time from a MIDI keyboard connected as the MIDI device 27.
In the ROM 13 or the external storage device 25, chord information is stored in a sequence data format so that the timing (performance timing) to be read out during the performance of a song is known, and is loaded into the RAM 14 and used.
An electronic musical instrument or the like connected as the MIDI device 27 may supply chord information in real time. For example, chord information is transferred from a teacher's electronic musical instrument in a music classroom.
In addition to this, the chord information is manually input by the performer (keyboard) 16 by operating the keys in the chord designation range by the performer or the teacher, and the chord information corresponds to the key number of the depressed key. Chord information may be output.
The arpeggio pattern stored in the ROM 13 as preset data may be loaded into the RAM 14 and used. The note ranking buffer has an area on the RAM 14. The arpeggio pattern and note order are expanded in the editing buffer area on the RAM 14 and edited by the user, or the editing result is saved in the external storage device 25.
[0027]
The CPU 12 loads an electronic musical instrument control program including a performance assisting program stored in the ROM 13 into the RAM 14 and performs various controls. Various data used for programs and processing may be installed in the external storage device 25 or downloaded from a server.
The external storage device 25 may be a drive for a recording medium such as an HDD (Hard Disk Drive), a CD-ROM (Compact Disk Read Only Memory), an MO (Magneto Optical Disk), a DVD (Digital Versatile Disk). When the control program is not stored in the ROM 13, the control program is stored in the hard disk in the HDD and is read into the RAM 14.
The CPU 12 starts tone (note on), finishes (note off), tone pitch, and other tone sounds according to melody performance information, arpeggio performance information, automatic rhythm information, etc. Are generated as performance information and output to the tone generator circuit 22.
[0028]
In the above description, it is assumed that the pitch conversion unit 3, the arpeggio performance information output unit 4, and the arpeggio pattern supply unit 5 shown in FIG. 1 are built in one electronic musical instrument body or personal computer. However, each may be in a separate device, and each unit may be connected using a communication interface.
In a personal computer, a performance assisting program can be installed to implement a similar performance assisting function. An operation element such as a keyboard or a mouse is used as a setting operation element 18, and a performance operation element (keyboard or the like) 15 may be a MIDI keyboard as a MIDI device connected via a MIDI interface 26.
[0029]
FIG. 4 is a flowchart for explaining the operation of the embodiment of the present invention. A case will be described in which performance information is input from the keyboard and chord information is read from the storage device.
In S41 to S51, input of chord information and performance information is detected, and pitch conversion is performed. In S52 and S53, pitch information is output according to the note order and the arpeggio pattern.
[0030]
If there is a change (chord change) in the input chord information in S41, the chord information stored in the chord information register (RAM 14 in FIG. 3) is updated in S42. In S43, the currently pressed key is being pressed. It is determined whether or not there is a note, that is, whether or not there is a pitch that is being sounded when the start of sound generation is instructed by the performance information already input.
If there is such a key being pressed, in S44, one or a plurality of pitch information obtained as a result of the pitch conversion to match the original chord information is stored in the note rank buffer shown in FIG. Delete everything from.
At the same time, rather than output to the arpeggio performance information output unit 4, as normal performance information output, pitch generation according to one or more pitch information as a result of pitch conversion to match the original chord information In order to end the, “note off” is output as performance information.
In S45, the pitch information being pressed is converted into pitch information that matches the new chord information updated in S42, and one or more pitch information that matches the new chord information is converted in S46. , And stored in the note ranking buffer shown in FIG.
At the same time, as normal performance information output, performance information “Note On” for starting the pronunciation of a pitch corresponding to one or a plurality of pitch information suitable for new chord information is output.
For normal performance information output, instead of outputting “note off” in S44 and “note on” in S46, new chord information is generated from the original output pitch while maintaining the sounding state. Performance information instructing pitch conversion to an output pitch suitable for the above may be output. For example, a “portamento control” message may be used.
[0031]
In S47, key depression is detected. If there is at least one key depression, in S48, the pitch corresponding to the depressed key is detected and converted into pitch information that matches the chord information already stored in the chord register, and in S49 the conversion is performed. The subsequent pitch information is stored in the “note order buffer” shown in FIG. At that time, the note order is determined according to a predetermined rule while combining the newly stored pitch information and the already stored pitch information. Therefore, note order may be rearranged for pitch information that has already been stored.
At the same time, as normal performance information output, performance information “Note On” for starting sound generation of the pitch detected by the key depression is output.
In S50, the key release is detected. If there is at least one key release, in S51, the pitch information converted from the pitch of the note corresponding to the key release to match the chord information is converted into the “note rank buffer” shown in FIG. ". At the same time, as normal performance information output, performance information “Note Off” for terminating the sound generation of the detected pitch is output.
[0032]
In S52, it is determined whether or not the current performance time is the time at which the pitch of any “note rank” in the “Arpeggio Pattern” shown in FIG. The determination is made based on the “timing data” in the “arpegio pattern” shown in FIG. When the sounding start timing comes, the pitch information of each note rank stored in the “note rank buffer” shown in FIG. 2A is referred to based on the corresponding “note rank data”, and this pitch is The performance information for making the pronunciation of is output.
[0033]
In addition, after reaching the last sounding start timing in the “Arpeggio Pattern” shown in FIG. 2B, wait until the bar line timing, and then return to the first sounding start timing and repeat the pattern. do it.
If no pitch information is stored in the note order buffer, no arpeggio sound will be generated even if the note order generation timing comes in S52.
In S54, it is determined whether or not the performance has ended. If not, the process returns to S41. The end of the performance may be determined by detecting that the performer has operated the performance end switch or detecting the end of the sequence data for outputting the chord information.
[0034]
In the above description, the subject to which the performance assist device is applied has been described by taking a keyboard instrument as an example, but an electronic musical instrument in the form of a string instrument type, a wind instrument type, a percussion instrument type, or the like may be used. Also, not only electronic musical instruments with built-in performance operators such as keyboards, sound generators, etc., each is a separate device, and each device is interconnected using a dedicated MIDI interface, various communication network interfaces, etc. You may apply to the electronic musical instrument system comprised.
The present invention is not limited to application to electronic musical instruments or personal computers, but can also be applied to karaoke devices, game devices, portable communication terminals such as mobile phones, automatic performance pianos, and the like.
[0035]
【The invention's effect】
As is apparent from the above description, according to the present invention, even a beginner who is difficult to perform a chord can easily perform an arpeggio performance with a pitch that matches the chord.
[Brief description of the drawings]
FIG. 1 is a functional block diagram for explaining an embodiment of the present invention.
FIG. 2 is an explanatory diagram showing an example of a note ranking buffer and an arpeggio pattern.
FIG. 3 is a hardware configuration diagram for realizing an embodiment of the present invention.
FIG. 4 is a flowchart for explaining the operation of the exemplary embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Performance information supply part, 2 ... Chord information supply part, 3 ... Pitch conversion part, 4 ... Arpeggio performance information output part, 5 ... Arpeggio pattern generation part

Claims (3)

A performance assisting device for inputting performance information for instructing pronunciation of one or a plurality of input pitches and outputting performance information for instructing an arpeggio performance,
Performance information input means for inputting performance information for instructing pronunciation of the input pitch;
Chord information input means for inputting chord information for conditioning performance;
When performance information instructing the pronunciation of the one or more input pitches is input by the performance information input means, each input pitch is adapted to the chord information input by the chord information input means, respectively. A pitch conversion means for converting the output pitch to
Arpeggio pattern input means,
Arpeggio performance information output means for outputting performance information instructing the pronunciation of each output pitch converted by the pitch conversion means in accordance with the arpeggio pattern input by the arpeggio pattern input means,
A performance assisting device characterized by comprising: The pitch conversion means is newly updated by the chord information input means when the start of sounding of the one or more input pitches is already instructed by the performance information input by the performance information input means. Each input pitch is converted into an output pitch suitable for the new chord information, respectively.
The performance assisting device according to claim 1, wherein: A performance assisting program for causing a computer to input performance information instructing the pronunciation of one or more input pitches and outputting performance information instructing an arpeggio performance,
A performance information input step for inputting performance information for instructing pronunciation of the input pitch;
A chord information input step for inputting chord information that conditions the performance;
When performance information instructing pronunciation of the one or more input pitches is input in the performance information input step, each input pitch is adapted to the chord information input by the chord information input means, respectively. A pitch conversion step to convert the output pitch to
Arpeggio pattern input step,
Arpeggio performance information output step for outputting performance information instructing the pronunciation of each output pitch converted by the pitch conversion step according to the arpeggio pattern input by the arpeggio pattern input means,
A performance assisting program characterized by comprising:

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