JP2626587B2 - Automatic performance device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic performance device capable of changing a pitch in an automatic performance.

2. Description of the Related Art Conventionally, there are an automatic accompaniment device and an automatic performance device as devices capable of performing an automatic performance without a performance operation. In the automatic accompaniment device, two measures
Pronunciation simple accompaniment pattern degree Timing in g and its pitch is stored in advance, the sound height is stored with a pitch to be sounded when a C major is specified. When the player specifies a chord other than the C major, the pitch of the accompaniment pattern is converted into a pitch corresponding to the specified chord. Changes according to the designated chord. Therefore, while performing a melody performance, by designating a chord that matches the melody to be played, it is possible to easily play a tune composed of a melody and an accompaniment with a pitch that matches the melody.

On the other hand, in the automatic performance device, the automatic performance data of the melody part and the accompaniment part of the entire music piece are stored in advance, so that the entire music piece including not only the accompaniment but also the melody can be automatically performed. Can be. Also, by setting the minus one mode,
It is possible to automatically play only the accompaniment without automatically playing the melody, and by performing the melody performance in accordance with the automatic performance of only the accompaniment, the melody and the melody matched with the melody are more easily than the automatic accompaniment device. It is possible to play music composed of accompaniment.

[0003]

However, in the above-mentioned automatic accompaniment apparatus, only the pitch of the accompaniment pattern can be changed by designating a chord, and the sounding timing is always constant. Is repeated, and the configuration of the accompaniment becomes simple.

[0004] On the other hand, the automatic performance data of the accompaniment part used in the automatic performance device is only about two measures.
Since the accompaniment part that changes musically in a complicated manner according to the progress of the song or the song etc. is stored in advance rather than repeating a simple pattern of degrees, the automatic performance data of this accompaniment part Are read sequentially and the accompaniment is played automatically,
Inevitably, not only the pitch of the accompaniment but also the sounding timing changes in a complicated manner, and it is possible to perform using the accompaniment having a more complicated configuration. However, this accompaniment may be involved in changes of accompaniment because in which automatic performance data in advance stored as described above is automatically played as it is read sequentially, the performer as the automatic accompaniment Not something. Therefore, while the performance can be performed with the accompaniment having a complicated configuration, the operation performed by the player is limited only to the melody performance, and the degree of freedom of the performance is limited.

An object of the present invention is to provide an automatic performance device which enables a player to participate in not only a melody but also an accompaniment.

[0006]

In the present invention in order to solve the above problems SUMMARY OF THE INVENTION, a code specifying means for specifying a code by the operation of the operator, the tone pitch indicated by the automatic performance data to be input, the Chords pre-assigned to pitches
First conversion means for converting the tone pitch corresponding to a specific code based, a pitch corresponding to the code of the transformed aforementioned Japanese <br/> constant by the first converting means, said code specifying Second converting means for converting the pitch into a pitch corresponding to the code specified by the means; and musical tone generation instructing means for instructing generation of a musical tone having the pitch converted by the second converting means.

Further, the inputted automatic performance data is
The first and second melody parts comprise automatic performance data of a melody part and automatic performance data of an accompaniment part.
The converting means preferably converts the pitch indicated by the automatic performance data of the accompaniment part into a pitch corresponding to the chord specified by the chord specifying means.

[0008]

When a player designates a chord by operating an operator while automatic performance data constituting a music piece is sequentially input, the designated chord is output from the chord designation means. Then, the first converting means preliminarily associates the pitch indicated by the input automatic performance data with the pitch.
Based on attached codes (such as chord progression data)
There is converted once to the pitch corresponding to a specific code, the further second converting means the pitch corresponding to the code of this particular,
The pitch is converted again into a pitch corresponding to the code output from the code specifying means. Then, the musical tone generation instructing means instructs generation of a musical tone based on the converted pitch.

Therefore, if the pitch converted by the first and second conversion means is the pitch indicated by the automatic performance data of the accompaniment part, the pitch of the accompaniment of the automatic performance having a complicated configuration is controlled by the operator. Corresponding to the chord specified by the operation described above, the person who operates the operator may be involved in the accompaniment of the automatic performance.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. That is, FIG. 1 is a block diagram showing the overall configuration of an embodiment of the present invention, and each device is a MIDI device.
Connected by The automatic performance device 1 is a so-called MIDI sequencer that stores melody data that is automatic performance data of a melody part of the entire music and accompaniment data that is automatic performance data of an accompaniment part of the entire music. Chord progression data indicating a chord for each bar of the whole music is stored. The chord progression data is assigned to channel 1 and sent to the automatic accompaniment device 2. The automatic performance data including the melody data and the accompaniment data is assigned to channels 2 to 16 and assigned to the automatic accompaniment device 2. Sent to

The automatic performance apparatus 1 can set a minus one mode. In the minus one mode, the data other than the melody data, ie, the accompaniment data and the chord progression data are stored in MIDI information. Is output to the automatic accompaniment device 2.

The keyboard 3 is a MIDI keyboard,
By the key operation in the lower key range C ₂ -C _3, be capable of specifying a desired code, the code data of the specified code is sent to the automatic accompaniment apparatus 2.

The tone generator 4 is a MIDI tone generator, and is capable of simultaneously producing different tones assigned to each of up to 16 channels in accordance with an instruction from the automatic accompaniment apparatus 2.

FIG. 2 is a block diagram showing the internal structure of the automatic accompaniment device 2. The automatic performance data and chord progression data sent from the automatic performance device 1 are input to a channel separator 5, and The channel separator 5 separates the chord progression data assigned to the channel 1 from the automatic performance data assigned to the channels 2 to 16. The automatic performance data is provided to a code conversion device 7 and is provided from the code conversion device 7 to an output MIX 10, while the chord progression data is provided to an automatic performance code discriminator 6. The automatic performance chord discriminator 6 discriminates the root of the chord and the type of the chord based on the chord progression data, and the discrimination result is given to the chord converter 7.

On the other hand, the key depressing information from the keyboard 3 is input to the tone range separator 8 by code data which is key depressing information for the lower key ranges C _{2 to} C ₃ and key depressing information for the upper key ranges B _{3 to} C ₆ . It is separated into manual performance data that is information. Code data of the lower key range C ₂ -C ₃ is given to the designation code discriminator 9, the designation code discriminator 9 discriminates the type of root and code from the specified code, the result of the determination is It is provided to the code conversion device 7 as MIDI information.

Further, the manual performance data in the upper key ranges B _{3 to} C ₆ is given to the output MIX 10 as MIDI information, and the output MIX 10
Two inputs of I information and the tone data are given to the sound source 4.

FIG. 3 shows the internal structure of the code converter 7, which is composed of a code inverse converter 11 and a code converter 12. The chord reverse converter 11 is supplied with the automatic performance data assigned to the channels 2 to 16 and the chord progression data via the automatic performance code discriminator 6. Further, the chord converter 12 includes automatic performance data inversely converted by the chord inverse converter 11,
The code data of the code designated by the key press is given.

The chord reverse converter 11 converts the pitch of the automatic performance data into a pitch corresponding to a C major using the chord reverse conversion table lbt shown in FIG. That is, when the pitch of the automatic performance data is, for example, a pitch to be generated in the G minor, the pitch is determined if the pitch is C major, and the pitch of the automatic performance data is determined. The pitch is converted to this required pitch.

On the other hand, the code converter 12 uses the code conversion table tbl shown in FIG. 5 to determine the pitch corresponding to the C major of the automatic performance data inversely converted by the code inverse converter 11. The pitch is converted to the pitch corresponding to the chord specified by the key. That is, for example, F
If the minor is designated, the pitch of the inversely converted C major is determined to be the F minor if it is F minor, and the pitch of the C major is converted to the determined pitch. .

In the inverse conversion table lbt and the conversion table tbl, “SC” is C, C♯, D, E ♭,.
B is a pitch for each semitone in the one-octave range, and pitches C to B are handled with numerical values from 0 to 11 set in pitch order as shown in FIG. “CC” is a code type such as maj, min, 7th, min7th, etc., and the code type is also handled with corresponding numerical values from 0 to 3 as shown in FIG. Further, in the automatic performance data and key depression information, with respect to the pitch, treated with the serial number from C ₂ as shown in FIG. 8 to 0-73 attached to each semitone relative pitch to C ₈ It is.

In this embodiment having the above-described configuration, if the minus one mode is set, the automatic performance device 1 outputs other automatic performance data except melody data.
That is, the accompaniment data and the chord progression data are sent out, and the pitch of the accompaniment data is first inversely transformed by the inverse chord converter 11 according to the flowchart shown in FIG. This inverse conversion is a process of converting the pitch of the accompaniment data composed of three or four tones one by one. First, the pitch key of the given accompaniment data is changed to the corresponding numerical value shown in FIG. (Step A1). Next, a value obtained by subtracting the root cb of the chord of the chord progression data in the bar from the pitch key of the accompaniment data is a pitch KE.
It is stored as Y (step A2).

[0022] That is, for example, the pitch key is G _3, and the pitch ke in the chord progression data
If the bar code to which y belongs is G minor,
The value of G ₃ is “19”, and the root tone of G minor, G
Is “7”, so that 19−7 = 12.
Then, since the pitch of the value "12" is C _3, it is the C ₃ in step A2 is stored as KEY.

Further, a value obtained by dividing the value of the pitch KEY by 12 is stored as SC (step A).
3) As a result, the value SC of the pitch name ignoring the octave is obtained. That is, pitch KEY As described above, assuming that a C _3, the value of C ₃ is "12", "12"
The remainder after dividing by “12” is “0”. Therefore, “0” is stored as the value of SC, and SC “0”
Is a value corresponding to the note name C ignoring the octave, as understood from FIG.

When the pitch name value SC is specified in this way, the correction value lbt [CC] [SC] obtained using the pitch name value SC and the chord type value CC is calculated as described above. Pitch KEY
, And stored as a new pitch KEY value (step A4). That is, the correction value is a value set at the intersection of CC and SC in the inverse conversion table lbt shown in FIG. 4, and the value of this intersection is that the note name SC is “E ♭” It is "1" only when the type CC is "min" or "min7th", or when the pitch name SC is "B $" and the chord type CC is "7th" or "m7th". In this case, it is "0".

Therefore, CC = min,
If SC = C, the correction value is “0”, and step A
“KEY + lbt [CC] [SC]” of 4 is 12 + 0 = 12. That is, when the correction value is "1", the pitch name which is higher by one semitone is the value of KEY, and when the correction value is "0", the value obtained in step A2 is the value of KEY as it is, The value of this KEY is output (step A
5).

[0026] Therefore, by the processing of step A1~A5 is made, said G ₃ was pitch to be sounded in G minor in accompaniment data, pitch, i.e. the code of the bar corresponding to the C major there is converted into C ₃ at pitch to be sounded if if were C major. Therefore, the processing of steps A1 to A5 is performed one note at a time for each pitch of the accompaniment data, so that the pitch of the accompaniment data is converted into a pitch corresponding to the C major, and is transmitted to the code converter 12. Given.

In the code converter 12, as shown in the flow chart of FIG. 10, the value of the KEY, that is, C ₃ = 12 in this example, is input (step B1).
The remainder value obtained by dividing the value of KEY by 12 is stored as SC (step B2), whereby the value SC of the pitch name ignoring the octave is obtained. When the note name value SC is specified in this manner, the conversion table t shown in FIG. 5 is used by using the note name value SC and the chord type value CC.
The correction value tbl [CC] [SC] obtained from the bl
, And this value is stored as the value of KEY (step B3).

[0028] That is, where [CC] is a type of the specified code by a player to depressed one of the lower key range C ₂ -C _3. The correction value in the conversion table tbl is such that the pitch name SC is “E”,
If the code type CC is "min" or "min7t"
h ”, or the pitch name SC is“ B ”,
If the code type CC is "7th" or "min7t"
It is "-1" only when it is "h", and is "0" in other cases.

Therefore, if the F minor is designated by the player here, CC = min, and
In this example, since SC = C, the correction value is “0” and “KEY + tbl [CC] [S
C] ”is 12 + 0 = 12, and the value of KEY is“ 12 ”
Becomes In other words, when the correction value is "-1", the pitch name lower by one semitone is the KEY value, and when the correction value is "0", the value input in step A1 is the KEY value as it is. Becomes

Then, a value obtained by adding the root key cb of the chord specified by the player to the value of the KEY is stored as the value of the key (step B4), and the value of the key is output (step B5). That is, when the F minor is designated as in this example, the root note is F, and cb = F = 5
Therefore, KEY + cb = 12 + 5 = 17, and the value of the key is “17”. And key “1”
7 ", as shown in FIG. 8, since it is F _3, pitch F ₃ is transmitted. Thus, this step B1~B
5, the pitch C ₃ of the automatic accompaniment data once inversely converted by the code inverse converter 11 becomes
Pitch F ₃ corresponding to the specified chord F minor
Is converted to

Therefore, the processing of steps B1 to B5 is performed one note at a time for each pitch of the accompaniment data inversely converted by the code inverse converter 11, whereby
The pitch of the accompaniment data corresponding to the C major is further converted to a pitch corresponding to the designated chord. The accompaniment data composed of the converted pitch and the upper key range B _3-
Manual performance data and the output M provided by the depressed key of C ₆
The signal is given to the sound source 4 via the IX 10, and the sound source 4 operates based on the data.

The music emitted by the operation of the sound source 4 is basically an automatic performance based on the accompaniment data constituting the accompaniment of the entire music. However, it is not as simple as the automatic accompaniment by the conventional automatic accompaniment device described above, but becomes complicated, and
Musician designates the code by depressed below the key range C ₂ -C _3, may alter the pitch of the accompaniment freely. Therefore, the performer can play the accompaniment with a complicated configuration and can participate in the accompaniment performance without being limited to the melody performance, thereby expanding the freedom of the performance.

Further, the pitch of the accompaniment data included in the automatic performance data is temporarily converted to a pitch corresponding to the C major by the code reverse conversion 11, and then the pitch corresponding to the chord specified by the code converter 12 is obtained. Therefore, the pitch of the automatic performance can be easily changed using the conversion control of the automatic accompaniment performed conventionally without requiring complicated conversion control.

Since the chord progression data is stored in advance in the automatic performance apparatus as described above, the chord progression data is used effectively, and the chord specified by the key depression does not match. In this case, it is possible to separately provide a mode in which the automatic performance is stopped until the two codes match, and the automatic performance is restarted from the position where the automatic performance is stopped at the time of the match.

[0035]

As described above, according to the present invention, the pitch indicated by the automatic performance data can be converted into the pitch corresponding to the chord specified by the player, so that the player can perform complicated operations. It becomes possible to participate in the automatic performance, thereby making it possible to expand the degree of freedom of the performance while complicating the overall configuration of the music to be performed.

Further, since the pitch of the automatic performance data in the accompaniment part is converted to the pitch corresponding to the designated chord, the player in the automatic performance device is not limited to the melody performance. It becomes possible to participate in the accompaniment performance, and a new performance form in the automatic performance device can be obtained.

The pitch indicated by the automatic performance data is
Into a pitch corresponding to one <br/> Dan specific code based on the code that has been previously correlated to the tone pitch, further pitch corresponding to the converted specified code the pitch was Since the conversion is performed again, the conversion control in the conventional automatic accompaniment can be effectively used, and the pitch can be easily converted.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the overall configuration of an embodiment of the present invention.

FIG. 2 is a block diagram showing an internal configuration of the automatic accompaniment device of the embodiment.

FIG. 3 is a block diagram showing an internal configuration of the code conversion device of the embodiment.

FIG. 4 is a conceptual diagram showing a configuration of a code reverse conversion table.

FIG. 5 is a conceptual diagram showing a configuration of a code conversion table.

FIG. 6 is an explanatory diagram showing a correspondence relationship between “SC” and a pitch name.

FIG. 7 is an explanatory diagram showing a correspondence relationship between “CC” and a code type.

FIG. 8 is an explanatory diagram showing a correspondence between a pitch and a serial number.

FIG. 9 is a flowchart showing processing contents of code reverse conversion.

FIG. 10 is a flowchart showing a process of code conversion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Automatic performance device 2 Automatic accompaniment device 3 Keyboard 4 Sound source 7 Chord conversion device 11 Chord inversion converter 12 Chord conversion device

Claims (1)

(57) [Claims] 1. A chord designating means for designating a chord by operating a manipulator, and a pitch indicated by input automatic performance data is reserved for the pitch.
First conversion means for converting the tone pitch corresponding to a specific code based on the code that is associated order corresponding, the tone pitch corresponding to the code of the transformed the particular by the first conversion means Second converting means for converting the pitch to a pitch corresponding to the code specified by the code specifying means; musical tone generation instructing means for instructing generation of a musical tone having a pitch converted by the second converting means; An automatic performance device comprising: