KR100762079B1 - Automatic musical composition method and system thereof - Google Patents

Abstract

A method and a system for automatic musical composition are provided to produce and perform music automatically and continuously while a user types by automatically producing the music by referring to a tone data table and responding to an input signal, thereby inducing interests of the user using a corresponding site and accordingly increasing interests of the user in the site. A method for automatic musical composition comprises: outputting an arbitrary tone in response to an input signal(210); deciding the next tone, which will be generated, by using the outputted tone and a tone data table(DTBL)(220); and outputting the next tone, which will be generated, in response to the next input signal(230). Tones arranged in rows are previously-generated tones. Tones arranged in columns are the next tones which will be generated.

Description

Automatic musical composition method and system

BRIEF DESCRIPTION OF THE DRAWINGS In order to better understand the drawings cited in the detailed description of the invention, a brief description of each drawing is provided.

FIG. 1 (a) is a diagram for explaining a method of expressing a loudness that is currently used in general.

1 (b) is a view for explaining a method of expressing the height of the sound used in the automatic music composition method according to an embodiment of the present invention.

2 is a flowchart illustrating an automatic music composition method according to an embodiment of the present invention.

FIG. 3 is a flowchart for describing a step of determining a tone to be generated next of the automatic music composition method of FIG. 2.

4 is a block diagram illustrating an automatic music composition system according to an embodiment of the present invention.

FIG. 5 is a block diagram illustrating a music player of FIG. 4.

6 is a diagram illustrating an example of a tone data table.

7 is a diagram illustrating another example of the tone data table.

8 is a diagram illustrating a phrase tone data table.

The present invention relates to an automatic music composition method and an automatic music composition system, and more particularly, to an automatic music composition method and system in which music is automatically composed according to a typing signal generated from a user terminal.

Recently, with the development of the Internet, such as the use of electronic mail, the transmission of text messages using a mobile phone, the use of communication means using the Internet is rapidly increasing. Also, like blogs, more and more people write their daily lives and thoughts in virtual spaces on the Internet and decorate their own space.

These spaces on the Internet usually have background music. However, the user does not directly compose or edit the background music in a space on the Internet, and downloads and uses already completed music.

On the other hand, music composition is a process of recording the musical image as a musical instrument while playing the musical image. In general, however, composition is not easy for ordinary people who are not experts in music. For example, writing musical notes to musical scores using musical instruments requires professional or composable skills.

Therefore, there is a need for a space on the Internet where anyone can easily compose music and listen to the composed music.

An object of the present invention is to provide an automatic music composition method in which music is automatically composed according to a typing signal generated from a user terminal.

Another object of the present invention is to provide an automatic music composition system in which music is automatically composed according to a typing signal generated from a user terminal.

Automatic music composition method according to an embodiment of the present invention for achieving the technical problem is arranged in rows and columns (tones) corresponding to a predetermined octave range in sequence and each row The present invention relates to an automatic music composition method using a tone data table having a probability value at which a tone corresponding to a column is generated at an intersection point of a column.

The automatic music composition method includes outputting an arbitrary tone in response to an input signal, determining a next tone to be generated using the output tone and the tone data table, and in response to the next input signal. Outputting the tone to be generated next.

Tones placed in the row represent tones previously generated, and tones placed in the columns represent tones to be generated next. The tone data table further includes one row indicating a previously generated tone of the previously generated tone.

The input signal is a typing signal generated when typing a predetermined terminal. Velocity and tone representing the individual intensities of the output tones are changed according to the speed at which the typing signal is generated.

The determining of the tone to be generated next includes determining a row corresponding to the tone generated in response to the input signal in the tone data table, and calculating a total sum of probability values disposed in each column of the determined row. Generating a random integer between 0 and the total sum, comparing the random integers by sequentially adding the probability values disposed in each column of the determined row, and sequentially adding the random values first Determining a tone corresponding to a heat larger than an integer as the tone to be generated next.

In the tone data table, the probability value is determined differently according to a chord (chord, Mars), and there are input tones of any row corresponding to any output tone corresponding to any column on the tone data table.

In the tone data table, if the row number corresponding to a certain tone and the column number corresponding to a tone to be generated next are the same, the probability value of the intersection point of the row and the column is determined by the row number corresponding to the arbitrary tone. The column number corresponding to the tone to be generated is set smaller than a probability value when the tone is close, and the tone to be generated and the tone to be generated next do not differ by more than one octave.

The tone data table corresponds to phrases connecting at least one or more tones in which the musical flow is natural to each of rows and columns, and a probability value at which a phrase corresponding to a column is generated at the intersection of each row and column. A phrase tone data table is further provided.

If the chord of the music is changed during the generation of the tone corresponding to the phrase, the generation of the tones not generated in the current phrase is canceled, and the new phrase corresponding to the previous tone in the phrase tone data table of the newly changed chord is cancelled. After selecting the tones of the new phrase are generated.

And setting one of a plurality of preset background musics before outputting an arbitrary tone in response to the input signal.

According to another aspect of the present invention, there is provided an automatic music composition system including a table storage unit, a music player, and a content storage unit.

The table storage unit sequentially arranges tones corresponding to a predetermined octave range in rows and columns, and arranges a probability value for generating a tone corresponding to a column at an intersection point of each row and column. Store the tone data table.

The music player refers to the tone data table and outputs a corresponding tone in response to the input signal. The content storage unit stores music reproduction contents which are backgrounds on the web on which tones output from the music reproduction unit are to be reproduced.

The music player determines an arbitrary tone in response to the input signal, determines a tone to be generated next using the determined tone and the tone data table, and generates the next tone in response to a next input signal. Output the tone to be used.

The automatic music composition system further includes a background music storage unit for storing a plurality of preset background music and outputting the selected background music.

The music reproducing section includes a first tone generating section, a retrieving section, a logic calculating section, an adding comparison section and a second tone generating section.

The first tone generator outputs an arbitrary tone in response to the first input signal. The search unit searches a row of the tone data table corresponding to the tone output from the first tone generator.

The logical operation unit calculates the total sum of the probability values arranged in each column of the row retrieved by the search unit, and generates a random integer between 0 and the total sum. The addition comparison unit compares the random integer with the probability values arranged in each column of the determined row in order.

The second tone generator determines a column in which the sequentially added values become larger than the arbitrary integers for the first time, and outputs a tone corresponding to the column.

The music reproducing unit further includes a control unit for changing a velocity and a tone representing an individual intensity of the output tone in response to a generation speed of the typing signal.

DETAILED DESCRIPTION In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

Automatic music composition method and system according to an embodiment of the present invention in response to the typing signal generated when the user types the dial, such as a computer or mobile phone, the sound is generated and the generated sound has a series of relevance and indiscriminate sounds It is a method and system that makes one music comfortable to a person's ear, not a collection of music, and can play and record the generated music.

The embodiment of the present invention is not limited to a keyboard connected to a computer or a mobile phone, and may be applied to any device capable of sending a signal by tapping on the keyboard. In addition, by applying an embodiment of the present invention to a web site that can post or write by pressing a keyboard, such as sending a text message using an e-mail or a mobile phone, as well as a personal space on the Internet, such as a blog or a psy, You can post music in your personal space on the Internet and at the same time.

Hereinafter, terms necessary for describing an automatic music composition method according to an embodiment of the present invention will be described first.

First, a "key" is a system that becomes a standard of order of pitches throughout all or part of the music, and is the same concept as the composition in harmony. For example, in music, the terms "major" and "C major" are used. The following description will be based on the height of C Major.

"Chord" (chord) is the nature of chords (eg, Cmaj, Dmin, E7, Fmaj, ...) that is applied to each section or part of music, and is a concept or pattern of harmony in harmony. An automatic music composition method according to an embodiment of the present invention may define a code by defining individual notes constituting a chord.

The following description is based on the key of C Major, and unless the automatic music composition method is defined otherwise, the definition of codes used in general music is used.

A "note name" is a unique name that is determined by distinguishing each note in the musical organization by its height. Here, 12 symbols are used in the following order.

[C, C #, D, D #, E, F, F #, G, G #, A, A #, B]

The "system name" is a name given relative to the fore of the key based on the scale of a specific key, which is the same concept as the system name in music, and uses 12 symbols in the following order.

[Degrees, degrees, les, levels, beauty, waves, waves, soles, soles, la, la, poetry]

The note name of the height having the system name of the degree in the key corresponding to C major is C, and the note name of the height having the system name of the degree in the key corresponding to D Major is D.

In this case, the order of note names and system names is the same, and the explanation is based on the key of the major to avoid confusion.

"Octave" is the relationship between two notes that correspond to the difference of 12 semitones, or the range between them, which is the same concept as the octave in commonly used music. Two notes of one octave difference have the same note name and a relationship of 1: 2 frequency ratio.

Velocity is an individual intensity of the sounds output by the automatic music composition method according to the embodiment of the present invention, and has the same meaning as the velocity in computer music.

"Tone" is defined by giving a unique number or symbol as the unique pitch of a particular short note in music. A method of expressing loudness, which is commonly used now, is shown in FIG.

Referring to FIG. 1 (a), the tone corresponding to "coming" is defined as "C4" by adding the system name "C" and the number 4 of the octave, changing the note name within one octave, and sequential every octave. Expresses a combination of numbers. That is, the tone one octave higher than B2 is B3, and the tone one semitone higher than B2 is C3.

1 (b) is a view for explaining a method of expressing the height of the sound used in the automatic music composition method according to an embodiment of the present invention.

In the automatic music composition method according to an embodiment of the present invention, a number necessary for defining, recognizing, and processing individual sounds is assigned a serial number based on a specific sound as shown in FIG.

At this time, by assigning a serial number based on other notes having the same note name, such as C3 or C5, not C4, a desired band can be made in octave units to suit the characteristics of the instrument. Also, assigning a serial number based on a note with a different note name (eg E) will create a music with a key (eg E Major) that is the primary note.

The method of assigning serial numbers based on other notes in the initial definition part is the same as the method of outputting the sound defined with different heights in the final output stage when outputting the sound composed with the serial number assigned based on normal C4. It is a principle.

"Melody" is a flow of tones over time, and in the automatic music composition method according to an embodiment of the present invention, each tone, a note name, or a system name is divided into "_" according to the order of appearance.

For example, in the case of C4, it is expressed in the form of "do_re_mi_pa_sol" or "C4_D4_E4_F4_G4" or "0_2_4_5_7".

"Match level" refers to an attribute that determines how much the tone corresponds to the code by referring to the code of the song at the time when the tone is generated in the automatic music composition method according to the embodiment of the present invention.

Every tone has a match level for a particular chord. The principle of granting a match level based on an octave as long as C4 to B4 is as follows.

"Match level 0" is a case where the automatic music composition method determines that the corresponding tone has the same note name as the individual notes constituting the chord of the chord, or plays a central role in the current musical flow.

For example, the Cmaj chord is defined as a chord of C, E, and G notes, so that tone 0, 4, and 7 have match level 0. Fmaj chords are defined as chords of notes F, A, and C. Tones 0, 5, and 9 have match level 0.

0, 5, 7, and 9 can have match level 0 when the Fmaj code specifies that G notes also play a central role. This is equivalent to defining a Fadd9 code consisting of F, G, A, and C.

"Match level 1" does not correspond to match level 0, but means that it can be used in the diatonic scale or when it is determined to be naturally necessary in the flow of music. For example, tones 2, 5, 9, and 11 in Cmaj code have match level 1, and tones 2, 4, 7, 11 in Fmaj code have match level 1.

"Match Level 2" It does not correspond to match level 0 or 1, and generally refers to when it is judged to be discordant or not necessary in the flow of music when played in the chord. For example, tones 1, 3, 6, 8 and 10 in the Cmaj code have match level 2 and tones 1, 3, 6, 8 and 10 in the Fmaj code have match level 2.

In general, the match level for each chord is defined as shown in Table 1 below, and other chords, which are generally used in music, which are not specified here, may be applied in the following form by the above rule.

Tones not defined as match level 0 or 1 in each code of Table 1 correspond to match level 2. The number (tons) corresponding to the match level in Table 1 is the value within one octave from 0 to 11, and it is the number obtained by subtracting or subtracting a value corresponding to 12 or an integer multiple corresponding to the tone interval of one octave. All tones have the same note name and match level.

For example, tones such as 12, 16, 19, or 24,28,31, or -12, -8, -5, as well as 0, 4, and 7, the match level 0 of the Cmaj code, are also tones of match level 0. Becomes

          TABLE 1

2 is a flowchart illustrating an automatic music composition method according to an embodiment of the present invention.

FIG. 3 is a flowchart for describing a step of determining a tone to be generated next of the automatic music composition method of FIG. 2.

Referring to FIG. 2, the automatic music composition method 200 according to an embodiment of the present invention sequentially arranges tones corresponding to a predetermined octave range in rows and columns, respectively. The present invention relates to an automatic music composition method using a tone data table in which a probability value corresponding to a column is generated at an intersection point of a row and a column.

The automatic music composition method 200 outputs an arbitrary tone in response to an input signal in step 210, 220 in which a tone to be generated next is determined using the output tone and the tone data table, and the next input. And 230 outputting the tone to be generated next in response to the signal.

4 is a block diagram illustrating an automatic music composition system according to an embodiment of the present invention.

Referring to FIG. 4, the automatic music composition system 400 includes a table storage unit 410, a music player 420, and a content storage unit 430.

The table storage unit 410 sequentially arranges tones corresponding to a predetermined octave range in rows and columns, and generates a tone corresponding to a column at an intersection point of each row and column. Tone data table DTBL having a probability value stored therein.

The music player 420 refers to the tone data table DTBL and outputs corresponding tones T1, T2 to Tn in response to the input signal TP. The content storage unit 430 stores music reproduction contents CT which are backgrounds on a web on which tones output from the music reproduction unit 420 are to be reproduced.

The music reproducing unit 420 determines an arbitrary tone in response to the input signal TP, determines a tone to be generated next by using the determined tone and the tone data table DTBL, and then inputs the next input. Outputs the tone to be generated next in response to the signal.

The automatic music composition system 400 further includes a background music storage unit 440 that stores a plurality of preset background music BM and outputs the selected background music BM.

FIG. 5 is a block diagram illustrating a music player of FIG. 4.

Referring to FIG. 5, the music reproducing unit 420 may include the first tone generating unit 510, the retrieving unit 520, the logic calculating unit 530, the addition comparing unit 540, and the second tone generating unit 550. Equipped.

Hereinafter, operations of the automatic music composition method 200 and the system 400 according to the exemplary embodiment of the present invention will be described in detail with reference to FIGS. 2 to 5.

The automatic music composition method 200 and the system 400 generate one tone in response to a typing signal generated each time the user 450 strikes the keyboard, and the generated tones automatically form music.

That is, in the automatic music composition method 200 and the system 400, the input signal TP is a typing signal in which the user 450 knocks on a dial, and music is generated whenever the user 450 generates a typing signal.

In some cases, when tone generation points are predetermined according to the time signature of the generated music, the typing signal may be input a plurality of times quickly between the tone generation points. In this case, a new tone may be output by considering that the typing signal is generated once at a time point closest to the tone generation time.

The method of determining the tone to be output each time a typing signal is input refers to a previously generated tone and individually applies a probability of occurrence for each next tone following it, and randomly selects one tone by that probability. Create

In randomly generating the tone to be generated next, the automatic music composition method 200 and the system 400 according to the embodiment of the present invention correspond to a predetermined octave range in rows and columns. The tone data table DTBL is arranged by sequentially arranging tones (tones) and arranging a probability value at which a tone corresponding to a column is generated at an intersection point of each row and column. The tone data table DTBL is stored in the table storage unit 410.

Tones placed in a row of the tone data table DTBL represent tones previously generated, and tones placed in the columns represent tones to be generated next. The tone data table will be described later.

If the automatic music composition method 200 or system 400 is built on the web site, the user 450 may use the automatic music composition method 200 or the system 400 through the Internet. 4 illustrates such an example.

The content storage unit 430 stores music reproduction contents CT which are backgrounds on a web on which tones output from the music reproduction unit 420 are to be reproduced. Since the tones output from the music player 420 mean music that is eventually generated, the content storage unit 430 refers to content on the web that the user 450 uses or accesses when the music is generated.

The music reproduction contents CT may be any space in which a user 450 may post in a space on the Internet such as a blog, a cy, and an e-mail using a dial attached to his terminal.

If the automatic music composition method 200 or the system 400 is built in a device such as a mobile device, the user 450 does not use the Internet but the automatic music composition method 200 or the system using a dial attached to the mobile device. 400 can be used.

The user 450 selects the music reproduction content in which the automatic music composition method 200 or the system 400 according to the embodiment of the present invention is implemented through the Internet. That is, the user 450 transmits a selection signal SEL1 for selecting one of music reproduction contents stored in the content storage unit 430.

The content storage unit 430 outputs one music reproduction content CT in response to the selection signal SEL1. Here, the selection signal SEL1 is a signal for selecting one of the plurality of music reproduction contents CT stored in the content storage unit 430. If the music reproduction content CT is content related to an e-mail, the user 450 may listen to music automatically generated in response to a typing signal input by the user 450 while composing an e-mail.

Steps 210 to 230 of the automatic music composition method 200 are performed by the music player 420 of FIG. 4. Before the operation of step 210 is performed, the automatic music composition method 200 may further include setting one of a plurality of preset background music BMs.

The setting of the background music BM is performed by the background music storage unit 440 of FIG. 4. The user 450 transmits a selection signal SEL3 for selecting the background music BM, and the background music storage unit 440 outputs one background music BM in response to the selection signal SEL3. Here, the selection signal SEL3 is a signal capable of selecting one of the plurality of background music BMs stored in the background music storage 440.

The background music storage unit 440 may provide an interface for adjusting the properties of the music generated by the automatic music composition method 200 and the system 400 according to an embodiment of the present invention.

What can be set in the background music storage unit 440 may be not only background music but also a musical instrument, a genre, a tempo, a key, and the like. Alternatively, instead of setting the above conditions by the user 450, the automatic music composition method 200 and the system 400 according to the embodiment of the present invention have a default value according to the location and purpose of using the condition setting step. May be omitted.

The background music storage unit 440 stores various background music (BM) including the flow of the chord and the style of the music so that the generated music has a melody suitable for a specific chord flow.

Background music (BM) is pre-composed to be the background of the melody generated by the automatic music composition method 200 or the system 400 with the flow of chords like other general music

For example, in order to emphasize and highlight the melody generated by the automatic music composition method 200 or the system 400, only the flow of chords may be quietly combined in the form of soft chords, or the background produced for a specific genre. In addition to music, you can also play the sounds of certain instruments.

The start of the background music BM may be automatically started by the start command of the user 450 or depending on the nature of the web site in which the automatic music composition method 200 or the system 400 is used. For example, when applied to an Internet bulletin board writing page, the background music (BM) may be automatically started when the page loading is completed, and the background music (BM) may be driven when the user 450 first inputs. The background music BM may be driven when the user 450 commands a specific interface.

In addition, after the automatic music composition method 200 or the system 400 is driven, the background music BM may be driven some time after the first few tones are generated or the first tones are generated.

The background music BM may be automatically terminated by a user's 450 termination command or according to the nature of the web site in which the automatic music composition method 200 or the system 400 is used. For example, when applied to an Internet bulletin board writing page, when the writing is completed, the background music (BM) is terminated or the automatic music composition method 200 or the system 400 generates some time after generating a tone. If there is no input, the background music BM may be terminated.

Background music (BM) may have the following properties in addition to the properties of the general music. That is, the code divided by the section or the corresponding section and the information about the time of division, whether the loop (cyclic playback) is set for the whole or the part, and the automatic music composition in the temporal region and the background music (BM) of the loop. Information about a temporal region for a section in which an input for driving the method 200 or the system 400 is allowed.

For example, suppose that the background music (BM) is played after the introduction of a song with Cmaj's chords, and then the chords (or sections) with the chords of Cmaj, Fmaj, and Gmaj, respectively, are over. As the loop starts, the automatic music composition method 200 or the system 400 is driven, and the loop region is reproduced a predetermined number of times or infinitely.

Here, the automatic music composition method 200 or the system 400 may be set to be driven only when the loop region is reproduced, and the code of the background music BM generated when the input signal occurs is referred to.

The automatic music composition method 200 and the system 400 output an arbitrary tone in response to the input signal TP (step 210), and output the tone and the tone to be generated next using the tone data table. And determining 230 and outputting the tone to be generated next in response to a next input signal. Steps 210 to 230 are performed by the music reproducing unit 420 and refer to the tone data table DTBL stored in the table storage unit 410.

That is, the music reproducing unit 420 refers to a probability value of the output of the input using the tone data table DTBL composed of each row corresponding to the input of the tone and each column corresponding to the output.

The automatic music composition method 200 or the system 400 generates a tone corresponding to match level 0 or 1 in response to the original input signal TP. The generated current tone determines a tone disposed in a column having a high probability value as the next tone by referring to the row corresponding to the corresponding tone of the tone data table DTBL and the columns in which the newly generated tones are arranged.

The tone data table DTBL is designed for each code.

6 is a diagram illustrating an example of a tone data table.

FIG. 6 is an example of a tone data table corresponding to a Cmaj code based on an area (0 to 24 in tone) spanning two octaves from C4 to C6 of the C Major key. The tone data table of FIG. 6 is called a single reference table for convenience.

The number in each row of the single reference table represents the tone previously created, and each column represents the number of tones to be created in the future. According to this table, if the previous tone is 2, the probability of generating the next 4 tones is 31/100, and the probability of generating 5 tones is 10/100.

In the automatic music composition method 200 and the system 400 according to an embodiment of the present invention, when a new input signal TP is input, the total music is compared with the sum of all the rows by referring to the row corresponding to the tone previously generated in the single reference table. Produces one tone of the number corresponding to the column with the probability of the ratio of the number in each column.

In the single reference table of FIG. 6, the sum of probability values arranged in each row is set to 100 for convenience. This is because the design is based on the relative weight of each tone to be output when designing the single reference table. Otherwise, the probability of appearance of each tone can be absolutely entered. Then the total sum of the probability values for that row may not be 100.

However, since the automatic music composition method 200 and the system 400 according to the embodiment of the present invention generate an output for an input unconditionally by referring to a single reference table, the values of each column of the row are recognized as a relative probability. . The tones generated in this way are input again when generating the next tone.

In step 220 of determining a tone to be generated next, in step 310 of determining a row corresponding to the tone generated in response to the input signal in the tone data table, a total sum of probability values disposed in each column of the determined row is determined. Step 320 of calculating, step 330 of generating a random integer between 0 and the total sum, steps 340 and 350 of comparing the random integer with the probability values arranged in each column of the determined row, and then adding And determining the tone corresponding to the column whose value first becomes larger than the arbitrary integer as the tone to be generated next.

Referring to FIG. 5, the music reproducing unit 420 may include the first tone generating unit 510, the retrieving unit 520, the logic calculating unit 530, the addition comparing unit 540, and the second tone generating unit 550. Equipped.

The first tone generator 510 outputs an arbitrary tone T1 in response to the first input signal TP1. Any tone T1 is a tone corresponding to match level 0 or match level 1. The searcher 520 searches for a row of the tone data table DTBL corresponding to the tone T1 output from the first tone generator 510. This corresponds to operation 310.

The logic operator 530 calculates a total sum of probability values disposed in each column of the row RW retrieved by the search unit 520, and generates a random integer INT between 0 and the total sum. This corresponds to the operations of steps 320 and 330.

The addition comparison unit 540 compares the random integer INT by sequentially adding probability values arranged in each column of the determined row RW. This corresponds to the operations of steps 340 and 350.

The second tone generator 550 sequentially determines a column CLM in which the added value becomes larger than an arbitrary integer INT for the first time, and outputs a tone corresponding to the column CLM. This corresponds to the operation of step 360.

The music reproducing unit 420 may further include a controller 560 for changing a velocity and a tone indicating the individual intensity of the tone output in response to the speed of the typing signal. The control unit 560 detects the generation speed of the input signal TP2, and if the speed increases, the tone of the output tone T2 is sharpened, and if the speed decreases, the tone of the output tone T2 thickens. Can be.

The controller 560 may calculate a time difference from the input signal to the next input signal, and apply a high velocity value by considering the smaller time difference as the more dense and strong input.

For example, you can define the concept of the density of the input, called a typo level, for several inputs that last for a certain amount of time. The typo level is a very short period of time that decreases by a certain amount, but below zero it is no longer flowing.

The automatic music composition method 200 or the system 400 increases or decreases the typo level by a certain amount each time an input signal occurs once, but the value after the increase cannot exceed 100. Therefore, if the input signal is input densely with time, the typo level is increased by the input more than its own automatic deceleration rate, and gradually increases to a maximum of 100, and gradually decreases when the input signal is decreased or stopped. It becomes zero.

As the typo level increases, the controller 560 may increase the tempo of the music, change the timbre of the musical instrument or the background music to be played, and greatly adjust the volume of the performance.

In addition, the controller 560 may increase the velocity and volume by a predetermined amount when the match level of the tone currently generated in the current code is match level 0. FIG. That is, the controller 560 detects a match level relationship between the tone currently generated and the tone previously generated, and increases the velocity and volume of the tone currently generated when it is determined that the match level is zero.

The automatic music composition method 200 or the system 400 regards the typing of a computer keyboard, the click of a mouse, or the button operation of a mobile device as a single input signal. Outputs a vertical connection of the tones once.

When the input device to which the embodiment of the present invention is applied has a sensing device such as speed or pressure in the terminal itself, a velocity that increases or decreases according to the increase or decrease of the speed or pressure may be applied to the corresponding output tones.

Embodiments of the present invention do not simultaneously receive two or more input signals. Therefore, when two or more input signals are generated in the minimum time that can be distinguished by the hardware or software in which the embodiment of the present invention operates, the embodiment of the present invention accepts only the first input signal as an input.

The new tones may be output in response to the input signal TP by referring to the tone data table DTBL and by the operations 310 to 360.

The tone data table DTBL has different probability values according to the code chord, and input tones of any row corresponding to any output tone corresponding to any column in the tone data table DTBL. This exists.

In the tone data table DTBL, when a row number corresponding to a certain tone and a column number corresponding to a tone to be generated next are the same, a probability value of an intersection point of the row and the column is equal to the row number corresponding to the arbitrary tone. The column number corresponding to the tone to be generated next is set to be smaller than the probability value when close. Thus, the generated tones can be a natural flow of sound.

Further, in the tone data table DTBL, any tone and the tone to be generated next are set not to differ by more than one octave, thereby preventing a sudden change in sound.

7 is a diagram illustrating another example of the tone data table.

Referring to FIG. 7, the tone data table further includes one row indicating a previously generated tone of the previously generated tone. The method of referring to the tone data table of FIG. 7 is the same as the method of referring to the tone data table of FIG. 6, except that it refers to two previously generated tones. The table of FIG. 7 is called a double reference table for convenience of explanation.

The first reference is the tone created just before, and the second reference is the tone created before. When these two references are input to the double reference table and a new tone is generated, the tone used as the first reference is input as the second reference, and the newly generated tone is input as the first reference when the next tone is generated.

The automatic music composition method 200 and system 400 generate a random tone corresponding to match level 0 or 1 for the first input. For the next input, the second tone is generated using the single reference method and then used as the first reference, and the double reference is referred to as the second reference.

The double reference method has rows and columns that correspond to the square of the number of possible ranges to represent all combinations (525 for a range of 25 tones), so that the tones are more precise and musically intended than the single reference method. Induce flow.

It will be understood by those skilled in the art that a double reference table has two rows, but it is possible to construct a reference table having two or more rows on the same principle.

The tone data table DTBL corresponds to a phrase that connects at least one or more tones in which the musical flow is natural to the respective rows and columns, and a phrase corresponding to the column at the intersection of each row and column is generated. A phrase tone data table having a probability value is further provided.

8 is a diagram illustrating a phrase tone data table.

The phrase tone data table is used to select a sequence of one or several tones (called phrases here) that have a natural flow in music, and assign the phrase's unique number (called phrase number) to input and output a single reference. It is used like a tone. Therefore, additional data defining phrases with unique numbers are needed.

This excludes items with unnatural flow from a large number of items in a compound reference that combines both single and double references, or extracts and uses only items with natural flow.

Although the phrases used in the phrase tone data table of Fig. 8 are all phrases composed of three tones, they can be mixed between phrases composed of different numbers of tones. In addition, the tones constituting the phrase may be tones of the whole scale that separately define only a set of tones corresponding to match level 0 or match level 1.

The automatic music composition method 200 and the system 400 select one of the phrases at random in response to the first input signal TP, and then output the first tone within the phrase.

Subsequently, the next tone of the phrase is sequentially output in response to the input signal TP of the user 450, and the next phrase is selected in response to the input signal TP after all the tones of the phrase have been played. In order to input the phrase number in the phrase tone data table, the next phrase number is output in the same way as the single reference, and then sequentially output from the first tone of the phrase of the corresponding number.

In the phrase tone data table, a code for each code may be separately designed by defining natural phrases for each code. However, when a method using a phrase tone data table is designed for each code, there is a case where there is no phrase to refer to when moving sections of different codes.

For example, if you refer to a Phrase Tone Data Table made for Cmaj chords and the chord is passed to Fmaj, the phrase used before may not be defined as any phrase number in the Phrase Tone Data Table for Fmaj chords.

To solve this problem, if the phrase to be used for the phrase tone data table for each chord is defined to be unified in the phrase tone data table for all chords, the phrase tone data table for all chords will be closed as a single or double reference, and the cycle will be repeated. Can be.

For example, a phrase for a Fmaj code, a phrase for a Cmaj code or another code, is inserted into both an input row and an output column.

Of course, since the output from the Phrase Tone Data Table for Fmaj Codes only outputs phrases defined for Fmaj, the Phrase Tone Data Table for Fmaj Codes only contains phrases for the Fmaj Code except when the phrase is first taken over. It will be input again.

However, this is not only inefficient in that one chord has to be embedded with phrases for other chords that are unnecessary, and it cannot cope if a chord goes to another chord before all the tones of that phrase are played.

This is because, if a part of the current chord phrase that has not been played yet is output at the point of switching to another chord, it may cause a mismatched chord or an unintended flow of notes.

Therefore, in the method using the phrase tone data table, if the chord of the music is changed during the generation of the tone corresponding to the phrase, the generation of the tones that are not generated in the current phrase is canceled, and the phrase tone data table of the newly changed chord is generated. After selecting a new phrase corresponding to the previous tone in, the sequence is created sequentially from the first tone of the phrase.

In other words, input the last played tone up to that point, and additionally utilize the dedicated phrase tone data table with the phrase of the newly changed chord as the output, select a new phrase in the changed chord, and create the first tone of the phrase. do.

As described above, the automatic music composition method 200 and the system 400 according to the exemplary embodiment of the present invention may refer to the tone data table illustrated in FIGS. 6 to 8 and automatically generate music in response to an input signal. The tone data tables shown in FIGS. 6 to 8 are just one example, and various tone data tables may be created according to conditions such as a code, a music genre, an instrument, and the like.

For example, as a variation of the phrase tone data table, a phrase that connects at least one or more tones in which the musical flow is natural corresponds to each column and tones corresponding to a predetermined octave range in each row. It is possible to construct a table in which tones are arranged sequentially, and a probability value for generating a phrase corresponding to a column is generated at an intersection point of each row and column.

As described above, optimal embodiments have been disclosed in the drawings and the specification. Although specific terms have been used herein, they are used only for the purpose of describing the present invention and are not intended to limit the scope of the present invention as defined in the claims or the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

As described above, the automatic music composition method and composition system according to the present invention automatically composes music according to a typing signal generated from a user terminal, so that the music continues while the user types on a website to which the embodiment of the present invention is applied. It can be automatically generated and played so that the interest of the user using the site can be increased to increase the user's interest in the site.

Claims (31)

Tone data in which rows and columns are sequentially arranged tones corresponding to a predetermined octave range and a probability value for generating a tone corresponding to a column is generated at the intersection of each row and column. In the automatic music composition method using a table, Outputting an arbitrary tone in response to an input signal; Determining a tone to be generated next using the output tone and the tone data table; And And outputting the tone to be generated next in response to a next input signal. The method of claim 1, The tones arranged in the row represent tones previously generated and the tones arranged in the columns represent tones to be generated next. The method of claim 2, wherein the tone data table, And one more row representing a previously generated tone of said previously generated tone. The method of claim 1, wherein the input signal, An automatic music composition method, characterized in that the typing signal generated when typing a predetermined terminal (typing). The method of claim 4, wherein When the typing signal is input a plurality of times between the tone generation points defined by the beat of the generated music, a new tone is output based on the occurrence of the typing signal once at the point closest to the tone generation point. Automatic music composition method. The method of claim 4, wherein And a velocity and a tone representing an individual intensity of the output tone according to the speed of generation of the typing signal. The method of claim 4, wherein The temporal density of the input of the typing signal is detected by using a typo level that increases by a certain amount in response to the typing signal and decreases by a certain amount as time passes, and the range of increase and decrease is constant. Velocity and tone representing individual intensities are altered in response to the temporal density. The method of claim 4, wherein If the match level of the tone currently generated in the current code is match level 0, increasing the velocity and volume representing the individual intensity of the currently generated tone by a predetermined amount. The method of claim 1, wherein determining the tone to be generated next: Determining a row corresponding to the tone generated in response to the input signal in the tone data table; Calculating a total sum of probability values disposed in each column of the determined row; Generating a random integer between 0 and the total sum; Comparing the random integers with each other in order by adding probability values disposed in each column of the determined row; And And determining a tone corresponding to a column in which said value added in turn becomes larger than said arbitrary integer first as said next tone to be generated. The method of claim 1, wherein the tone data table, The probability value is determined differently according to a chord. And an input tone of any row corresponding to any output tone corresponding to any column on the tone data table. The method of claim 1, wherein the tone data table, If the row number corresponding to a certain tone and the column number corresponding to a tone to be generated next are the same, the probability value of the intersection of the row and the column corresponds to the tone to be generated next to the row number corresponding to the arbitrary tone. And the predetermined tone number is set smaller than the probability value when the adjacent column number is close, and the tone to be generated and the tone to be generated next do not differ by more than one octave. The method of claim 1, Phrase tone data with a phrase that connects one or more tones that have a natural musical flow to each of the rows and columns, and a probability value at which the phrase corresponding to the column is generated at the intersection of each row and column. An automatic music composition method further comprising a table. The method of claim 12, If the chord of a music is changed while creating a tone that corresponds to a phrase, the generation of uncreated tones of the current phrase is canceled, and the new phrase corresponding to the previous tone in the Phrase Tone Data table of the newly changed chord. Tones of the new phrases are generated after selecting. The method of claim 1, Each phrase corresponds to a phrase that connects one or more tones that have a natural musical flow to each column, and sequentially arranges tones corresponding to a predetermined octave range in each row, and each row. And a phrase tone data table having a probability value at which a phrase corresponding to a column is generated at an intersection point of the column. The method of claim 1, And setting one of a plurality of preset background music before outputting an arbitrary tone in response to the input signal. Tone data table that sequentially arranges tones corresponding to a predetermined octave range in rows and columns, and a probability value for generating a tone corresponding to a column at the intersection of each row and column Table storage unit for storing the; A music player for referring to the tone data table and outputting a corresponding tone in response to an input signal; And A content storage unit for storing music reproduction contents which are backgrounds on a web on which tones output from the music reproduction unit are to be reproduced; The music player, Determine an arbitrary tone in response to the input signal, determine a tone to be generated next using the determined tone and the tone data table, and output the tone to be generated next in response to a next input signal Automatic music composition system, characterized in that. The method of claim 16, And a background music storage unit for storing a plurality of preset background music and outputting the selected background music to the music player. The method of claim 16, wherein the music playback unit, A first tone generator for outputting an arbitrary tone in response to the first input signal; A search unit for searching a row of the tone data table corresponding to the tone output from the first tone generator; A logic calculating unit for calculating a total sum of probability values disposed in each column of a row retrieved by the searching unit, and generating an arbitrary integer between 0 and the total sum; An addition comparison unit for adding the probability values arranged in each column of the determined row and comparing them with the arbitrary integer; And And a second tone generator for determining a column in which the value added in turn is larger than the random integer first and outputting a tone corresponding to the column in response to the next input signal. The method of claim 18, The input signal is a typing signal generated when typing a predetermined terminal, and the music reproduction contents are web sites capable of generating the typing signal. The method of claim 19, When the typing signal is input a plurality of times between the tone generation points defined by the beat of the generated music, a new tone is output based on the occurrence of the typing signal once at the point closest to the tone generation point. Automatic music composition system. The method of claim 19, wherein the music playback unit, And a control unit for changing a velocity and a tone representing an individual intensity of the output tone in response to a rate of generation of the typing signal. The method of claim 19, wherein the music playback unit, The temporal density of the input of the typing signal is detected by using a typo level that increases by a certain amount in response to the typing signal and decreases by a certain amount as time passes, and the range of increase and decrease is constant. And a control unit for changing a velocity and a tone indicative of individual intensities in response to the temporal density. The method of claim 19, wherein the music playback unit, And a control unit for increasing a volume and a volume representing a respective intensity of the currently generated tone when the match level of the tone currently generated in the current code is match level 0. Music composition system. The method of claim 16, Tones arranged in the row of the tone data table indicate tones previously generated, and tones arranged in the columns indicate tones to be generated next. The method of claim 24, wherein the tone data table, And one more row representing a previously generated tone of said previously generated tone. The method of claim 16, wherein the tone data table, The probability value is determined differently according to a chord. And an input tone of any row corresponding to any output tone corresponding to any column on the tone data table. The method of claim 16, wherein the tone data table, If the row number corresponding to a certain tone and the column number corresponding to a tone to be generated next are the same, the probability value of the intersection of the row and the column corresponds to the tone to be generated next to the row number corresponding to the arbitrary tone. And the predetermined tone number is set smaller than a probability value when the adjacent column number is close to each other, and the random tone and the tone to be generated next are not different by more than one octave. The method of claim 16, wherein the table storage unit, Phrase tone data with a phrase that connects one or more tones that have a natural musical flow to each of the rows and columns, and a probability value at which the phrase corresponding to the column is generated at the intersection of each row and column. An automatic music composition system comprising a table. The method of claim 28, If the chord of the music is changed during the generation of the tone corresponding to the phrase, generation of the ungenerated tones of the current phrase is canceled, and the new phrase corresponding to the previous tone in the phrase tone data table of the newly changed chord is cancelled. Tones of the new phrase are generated after selecting. The method of claim 16, wherein the table storage unit, Each phrase corresponds to a phrase that connects one or more tones that have a natural musical flow to each column, and sequentially arranges tones corresponding to a predetermined octave range in each row, and each row. And a phrase tone data table in which a probability value for generating a phrase corresponding to a column is generated at an intersection point of the column and the column. Tone data table that sequentially arranges tones corresponding to a predetermined octave range in rows and columns, and a probability value for generating a tone corresponding to a column at the intersection of each row and column In a computer-readable recording medium recording an automatic music composition method using Outputting an arbitrary tone in response to an input signal; Determining a tone to be generated next using the output tone and the tone data table; And And outputting the tone to be generated next in response to a next input signal. A computer-readable recording medium having recorded thereon a program for executing an automatic music composition method using a tone data table on a computer.

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