JP2011180429A - Display device of syllable number of lyrics and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To display the syllable number of lyrics that suits a predetermined singing melody to a user. <P>SOLUTION: Musical score information about a singing melody is input (S010), analysis of sectioned structure of a musical piece and analysis of notes are performed based on the musical score information and various feature quantities about the ease of singing are computed for respective individual notes (S110, S120, S130 and S210). Based on the computed feature quantities, the feature quantities for the respective individual notes are averaged per small section unit (S310), and plural kinds of syllable number scores according to the average feature quantities are computed for the respective individual small sections (S320). The weighted average of the computed plural kinds of syllable number scores is obtained using weighting parameters and the total syllable number of lyrics per small section unit is computed by performing a rounding process to an integer (S330). The computed total syllable number for each small section is displayed sequentially according to the performance order of the musical score information (S410). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a technique for presenting the number of syllables of lyrics suitable for a singing melody.

  2. Description of the Related Art Conventionally, when assigning lyrics to music prepared in advance, a technique is known in which one syllable of lyrics is assigned to one note included in a score. For example, Patent Document 1 discloses a technique for associating a melody corresponding to a sound length with a sound constituting a guide melody. In this technique, one kana character (one syllable) corresponding to the sound length is assigned to one sound of a guide melody.

  On the other hand, as a technique for supporting the work of assigning lyrics to music, a lyrics creation device described in Patent Document 2 is known. In the technique disclosed in Patent Document 2, a score is displayed on a piano roll score, and a lyrics input cell having a length corresponding to the number of beats is displayed at a position corresponding to a note bar indicating the note. It is said that the lyrics can be easily assigned in association with each other.

JP2008-20621 JP 2004-206153 A

  By the way, when providing a device for assisting a user to write a song for a song prepared in advance, only one syllable lyrics per note is considered as described in Patent Document 1. By design, the number of syllables of lyrics that can be written is determined by the number of melody notes. As a result, there is an inconvenience that lyrics having a larger (or fewer) number of syllables than the number of notes cannot be assigned, and the expression content of the lyrics is limited.

  On the other hand, according to the technique described in Patent Document 2, although it is easy to assign lyrics in association with the position of a note, the recommended number of syllables of the lyrics is not presented, and the syllable of the lyrics with respect to the melody It is necessary for the user himself to determine how many to allocate. However, it is difficult for users who are unfamiliar with writing lyrics to create lyrics with the number of syllables that exactly match the number of melody notes. Even if you try to assign more (or less) syllables to the number of melody notes, It is also difficult to determine how many syllables are assigned to which part to make the lyrics easy to sing. In addition, by assigning many syllables to the melody without darkness, it is possible that the lyrics will be difficult to sing, which does not match the melody.

  The present invention has been made to solve the above-described problem, and an object of the present invention is to provide a technique for presenting the number of syllables of lyrics suitable for a predetermined singing melody to a user.

  The lyrics syllable number presentation device of the present invention made to achieve the above object is characterized by comprising a melody structure analysis means, a feature amount analysis means, a syllable number calculation means, and a presentation means. Among these, the melody structure analyzing means analyzes the musical score information of the singing melody and specifies a melody section obtained by dividing the singing melody for each specific rest section. The feature amount analyzing means analyzes the musical score information of the singing melody and specifies a predetermined feature amount related to the performance of the notes constituting the singing melody. The syllable number calculating means is based on the melody section specified by the melody structure analyzing means and the feature quantity of the notes specified by the feature quantity analyzing means according to the statistical characteristics of the feature quantities of the notes belonging to each melody section. Calculate the total number of syllables of lyrics in melody sections. The presenting means presents the total syllable number of each melody section calculated by the syllable number calculating means to the user in the performance order of the score information.

Note that the syllable here refers to a unit that is usually recognized as a group of sounds in a language and is pronounced. In Japanese, one kana character corresponds to one syllable.
According to the lyrics syllable number presentation device of the present invention, it is possible to support the user's lyric work by presenting the total number of syllables of lyrics in units of melody sections calculated from the singing melody segmentation structure and performance characteristics. it can. Thereby, the user can create lyrics that match the singing melody with reference to the number of presented syllables. In particular, presenting the total number of syllables in lyric units instead of the number of syllables in note units not only facilitates the work of allocating the number of syllables, but also allows the user to add some degree to individual notes in the melody interval. Syllables can also be assigned freely, which broadens the range of user creation. In addition, it is possible to assign more syllables than the number of notes in the melody section based on the characteristics analyzed from the score information, compared with the conventional lyric assignment method in which only one syllable is assigned to one note. This makes it possible to create highly expressive lyrics.

  By the way, when specifying the number of syllables of the lyrics from the characteristics of the singing melody, it is conceivable to determine the number of syllables assigned to the melody section based on the ease of singing the lyrics. Specifically, if there is a part that is easy to sing locally in the singing melody, the lyrics that are easy to sing can be created by increasing the number of syllables assigned to the part and reducing the number of syllables assigned to the part that is difficult to sing.

  The local singing ease of a singing melody is thought to be related to various features such as the length of the notes that make up the singing melody (time length) and the pitch difference from the immediately preceding note. . Therefore, by analyzing the musical score information of the singing melody and determining the number of syllables based on these feature quantities that are indicators of local singing ease, the number of syllables of lyrics that are easy to sing can be calculated accurately. The specific contents will be described below.

(When specifying the number of syllables according to the note length)
In a singing melody, if the time length of a note is relatively long, the time required for the pronunciation of the lyrics can be afforded, so even if a large number of lyrics syllables are allocated, it can be sung without difficulty. In addition, if the time length of a note is long on average in one melody section, it is considered that more lyric syllables may be allocated in the entire melody section. Therefore, by configuring so as to determine the number of syllables based on the characteristics related to the time length of notes, the number of syllables of lyrics that are easy to sing can be calculated accurately. Specifically, as described in claim 2, a feature amount based on the time length of each note is specified, and based on the feature amount, the longer the average time length of the notes belonging to each melody section, the longer the melody The total number of syllables for each individual melody section may be calculated by increasing the number of syllables per note in the section.

  Note that the feature amount based on the time length of a note here indicates, for example, a value indicating the absolute time length of the note or a ratio of a relative time length with other notes in the same singing melody. It refers to various indicators related to the note length such as value.

  Also, when determining the number of syllables of the lyrics according to the feature amount based on the time length of the note, for example, depending on the ratio to the time length of the previous note or the ratio to the longest note length in the singing melody The number of syllables may be determined so as to be proportional to the absolute time length of the note.

(When specifying the number of syllables according to the pitch difference from the previous note)
In a singing melody, it is difficult to switch the pitch at the time of singing where the pitch difference between successive notes is large. Therefore, it is difficult to sing lyrics corresponding to a note having a large pitch difference from the previous note, and if many lyric syllables are assigned to such a portion, the resulting lyrics are difficult to sing. On the contrary, if the pitch difference from the previous note is small, it can be sung comfortably even if a large number of lyrics syllables are assigned to the note. In addition, if the pitch difference between the notes in one melody section is small on average, it is considered that more lyric syllables may be assigned in the entire melody section.

  Therefore, by configuring so as to determine the number of syllables based on the feature related to the pitch difference from the immediately preceding note, it is possible to accurately calculate the number of syllables of lyrics that are easy to sing. Specifically, as described in claim 3, a feature value based on a pitch difference from a note immediately before each note is specified, and based on the feature value, an average sound of notes belonging to each melody section is determined. The smaller the height difference, the larger the number of syllables per note of the melody section, and the total number of syllables for each melody section may be calculated. Note that the feature amount based on the pitch difference from the note immediately before here refers to an index such as a value indicating the difference in pitch from the note immediately before the note.

(When comprehensively determined from multiple syllable number calculation methods)
Up to this point, an example has been described in which the number of syllables of the lyrics is calculated using different feature quantities such as the length of the note and the pitch difference from the immediately preceding note. Although these various features are different in content, they are common in that they are indicators that indicate the ease of local singing of the singing melody, so the length of the syllable number calculated based on each of these multiple features The number of syllables to be finally presented to the user is comprehensively determined from the index and the pitch difference index (an index that indicates that the larger this value, the larger the number of syllables assigned to one note in the melody section). (Claim 4).

  It should be noted that the weighted average value may be calculated by adding a predetermined weighting factor to the pitch index and pitch difference index calculated for each melody section. At this time, a larger weighting factor may be assigned to the index of the number of syllables calculated based on the more important feature amount.

  Furthermore, as described in claim 5, when the user can designate a weighting coefficient used for calculating the weighted average value of the pitch length index and the pitch difference index, the number of syllables according to the user's intention to write the lyrics Can be presented, which is preferable.

  Next, the lyrics syllable number presentation device according to claim 6 displays a score based on the score information of the singing melody, and associates it with the performance position of each melody segment in the displayed score, in each melody segment. The total number of syllables calculated for the lyrics is displayed. With this configuration, it is convenient for the user who sees the output result to easily recognize the correspondence between the musical score performance position and the number of syllables of the lyrics assigned to the melody section.

  The present invention may be configured as a program to be executed by a computer. In that case, the program of the present invention analyzes the musical score information of the singing melody, analyzes the melody structure analysis procedure for identifying the melody section obtained by dividing the singing melody for each specific rest section, and analyzes the musical score information of the singing melody. , Based on the feature amount analysis procedure for specifying a predetermined feature amount related to the performance of the notes constituting the singing melody, the melody section specified by the melody structure analysis procedure, and the feature amount of the note specified by the feature amount analysis procedure, The syllable number calculation procedure to calculate the total number of syllables of the lyrics in melody sections according to the statistical features of the feature values of the notes belonging to each melody section, and the total syllables of each melody section calculated by the syllable number calculation procedure It suffices if the computer is configured to execute a presentation procedure for presenting numbers to the user in the order of performance of the musical score information.

  By recording the program configured as described above in various storage media and causing the computer device to execute the program, the computer device can function as the syllable number presentation device according to the first aspect.

It is a block diagram which shows schematic structure of the syllable number presentation apparatus. It is a flowchart which shows the procedure of syllable number presentation processing. It is explanatory drawing which shows the structure of a song melody. It is explanatory drawing which shows the series of the section flag provided to the note and the subsection index. It is explanatory drawing which shows the example 1 of a display of the number of lyrics syllables. It is explanatory drawing which shows the example 2 of a display of the number of lyrics syllables.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[Description of configuration of syllable number presentation device]
First, a schematic configuration of the lyrics syllable number presentation device 1 according to the embodiment will be described with reference to FIG. The lyrics syllable number presentation device 1 includes a storage unit 11, a melody data input unit 12, a display unit 13, an operation reception unit 14, and a control unit 15.

  The memory | storage part 11 is a memory | storage device (for example, hard disk drive) for memorize | storing various data and programs required in order for the syllable number presentation apparatus 1 to operate | move. The melody data input unit 12 is an input interface for inputting the musical score information of the singing melody to be processed by the lyrics syllable number presentation device 1 to the control unit 15. Specifically, from an input device that reads data from a portable storage medium (for example, an optical disk or a flash memory) that stores musical score information of a singing melody, or an external information processing device that is communicably connected via a network It consists of an input device that downloads musical score information of singing melody.

  The display unit 13 is a display device for presenting information to the user by an image, and for example, a liquid crystal display or the like is used. The operation reception unit 14 is an input device for inputting an instruction from a user, and for example, a keyboard, a pointing device, or the like is used.

  The control unit 15 is a computer device mainly composed of a ROM 15a, a RAM 15b, a CPU 15c, and a bus line connecting these components, and performs various arithmetic processes in accordance with programs stored in the ROM 15a and the storage unit 11 to produce lyrics syllables. Each part configuration of the number presentation device 1 is controlled. In this embodiment, the control unit 15 analyzes the musical score information of the lyric melody input via the melody data input unit 12, and recommends the number of syllables of the recommended lyrics based on the analysis result in units of small sections of the singing melody. A process of calculating and displaying the calculation result on the display unit 13 (hereinafter referred to as a syllable number presentation process) is executed. Details of the syllable number presentation process will be described later.

[Description of syllable number presentation processing]
Next, the procedure of the syllable number presentation process executed by the control unit 15 will be described based on the flowchart of FIG.

First, the control unit 15 reads the musical score information of the singing melody to be processed by the syllable number presentation processing, and acquires various data necessary for the analysis of the singing melody (S010).
In the present embodiment, MIDI (Musical Instrument Digital Interface) format data is assumed as musical score information to be processed. In the musical score information in the MIDI format, the pitch (note number) and the time length are shown as the notes of the constituent sounds forming the melody of the music (here, the melody of the singing part). The time length of a note (hereinafter also referred to as note length) is represented by a tone output start (Note-on) timing and a tone output end (Note-off) timing. The Note-on timing is the time from the start of the music performance until the output of the sound starts, and the Note-off timing is the time from the start of the music performance until the output of the sound ends.

  In the present embodiment, it is assumed that the song melody to be processed has a segmented structure having a predetermined regularity. Specifically, as shown in FIG. 3A, a melody section such as A melody, B melody, chorus 1, 2 is repeated several times from the start to the end of the music. By the way, this type of performance is often seen in Japanese popular songs, including some variations.

  In the present embodiment, a general structure in which the entire music such as the above-described A melody, B melody, and choruses 1 and 2 is divided is defined as a large section. In general, there is an interlude period without singing between large sections, and this interlude period is a silent section in the song melody.

  Furthermore, as shown in FIG. 3B, a configuration is also assumed in which one large section is divided into a plurality of small melody sections. In this embodiment, a small note group obtained by further dividing a large section is defined as a small section. Between the small sections, there is a smaller interlude period than the interlude section between the large sections. This interlude period is a silent section in the singing melody. In addition, each small section is assigned an order number (referred to as a small section index number p) to all the small sections in order from the first small section of the music by a music analysis block described later.

  FIG. 3C schematically shows musical score information in a small section of a singing melody in a piano roll format. This piano roll score is a display format in which the vertical axis represents a scale that looks like a piano keyboard, the horizontal axis represents time, and a note is represented by a note bar having a length corresponding to the time length.

As shown in FIG. 3C, a note index number k indicating the performance order is assigned to each note in the score information. k is a variable indicating the order number {1, 2, 3,..., K ₀ (K ₀ is the total number of music notes)} assigned to all the notes in order from the first note of the music piece. The note number (pitch) of the note corresponding to the note index number k is NN (k), the Note-on timing is ON (k), and the Note-off timing is OFF (k).

  That is, in S010 of syllable number presentation processing, data of note number NN (k), Note-on timing ON (k), Note-off timing OFF (k) of each note from musical score information (MIDI data) of singing melody. To get.

  Returning to the flowchart of FIG. Next, based on the data of the note number NN (k), Note-on timing ON (k), Note-off timing OFF (k) acquired in S010, the music structure analysis block of (1) and the note of (2) The characteristics of the singing melody are analyzed in each block of the analysis block, and based on the analysis result, the total number of syllables of lyrics recommended for each small section is calculated in the syllable number estimation block of (3). Hereinafter, the processing contents of the respective blocks (1) to (3) will be described.

(1) About music structure analysis block (1-1) Large section estimation In S110, the division structure of the large section in a song melody is specified. For this purpose, first, the adjacent silent time length NML (k) of each note is calculated from the Note-on timing and Note-off timing of two adjacent notes by the following equation.
NML (k) = ON (k) −OFF (k−1)
The adjacent silent time length NML (k) is a value indicating the silent time (that is, rest period) from the end of the output of the immediately preceding note to the start of the output of the next note. Using this NML (k) histogram, an oversized area whose adjacent silent time length is larger than a predetermined lower limit value is specified. At this time, the method of specifying the lower limit value may be a method of finding the minimum point from the larger NML (k), or a method of calculating the second derivative of the histogram and finding the inflection point of the first derivative.

The large section start flag LPS (k) and the large section end flag LPE (k) are set as follows using the note index number k of NML (k) corresponding to the specified extra large area.
LPS (k) = 1
LPE (k-1) = 1
In addition to LPS (k) and LPE (k) other than the note index number k corresponding to the maximal region, the following equations are set.
LPS (k) = 0
LPE (k-1) = 0
When metadata defining the general structure such as A melody, B melody, rust, etc. is attached to the score information, or when the global structure is defined in the score information itself, each note is determined according to the defined global structure. A large section start flag and a large section end value corresponding to the above may be set.

(1-2) Small section estimation Next, in S120, the division structure of the small section in a song melody is specified. First, in the histogram of the adjacent silent time length NML (k) calculated in the large section estimation (1-1) of S110, among the areas where the adjacent silent time length is medium (excluding the extra large area specified in S110, A region larger than a predetermined lower limit value) is specified. At this time, the method of specifying the lower limit value may be a method of finding the minimum point from the larger NML (k), or a method of calculating the second derivative of the histogram and finding the inflection point of the first derivative.

The small section start flag SPS (k) and the small section end flag SPE (k) are set as follows using the note index number k of the NML (k) corresponding to the specified intermediate region.
SPS (k) = 1
SPE (k-1) = 1
Note that SPS (k) = 1 and SPE (k) are also applied to the notes with LPS (k) = 1 or LPE (k) = 1, that is, the corresponding notes at the beginning and end of the large section, respectively. ) = 1.

SPS (k) and SPE (k) are set as in the following equations except for the note index number k corresponding to the middle region.
SPS (k) = 0
SPE (k-1) = 0
When metadata defining a group of notes (small sections) further divided within the general structure such as A melody, B melody, and chorus is attached to the score information, or when a small section is defined in the score information itself Then, the values of the small section start flag and the small section end flag corresponding to each note may be set according to the small section defined there.

(1-3) Subsection Index Assignment Next, in S130, an index is assigned to the subsection specified in the subsection estimation in S120. First, a small section index number p, which is a variable indicating the order number of a small section, is introduced, and numbers are assigned in order from the first small section. Further, a small section start index ks (p), which is a variable indicating the note index number k of the first note belonging to the small section, is introduced, and ks (p) is set by the procedure shown in the following program control syntax. .

Next, the number of notes in a small section kn (p) indicating the number of notes belonging to each small section #p is calculated by the following equation.
kn (p) = ks (p + 1) −ks (p)
FIG. 4 is an explanatory diagram showing a series of section flags set for each note in S110 and S120 and a series of indexes and the like set for each subsection in S130. As shown in this figure, for each note corresponding to each note index number k, a value is set in each section flag of LPS (k), LPE (k), SPS (k), and SPE (k). Specifically, LPS (k) is set to 1 at the large section start position (note index number 1, 39). In addition, SPS (k) is set to 1 at the small section start position (note index numbers 1, 9, 20, 28, 39). SPE (k) is set to 1 at the small section end position (note index numbers 8, 19, 27, 38, 44). Further, LPE (k) is set to 1 at the end position of the large section (note index number 38). Note that the notes of note index numbers 1 and 39 correspond to both the large section start position and the small section start position, so LPS (k) and SPS (k) are both set to 1. Further, since the note having the note index number 38 corresponds to both the large section end position and the small section end position, both LPE (k) and SPE (k) are set to 1.

  In addition, the values of the variables ks (p) and kn (p) are set for each small section corresponding to each small section index number p. In ks (p), a note index number k corresponding to the first note in the subsection is set, and in kn (p), the number of notes belonging to the subsection is set.

(2) Note analysis block Returning to the flowchart of FIG. In S210, a plurality of types of feature values related to performance are specified for each note from the note-on timing, note-off timing, and note number of the note. There are four types of feature quantities related to performance: pitch difference NND (k), note length NL (k), maximum note length MNL, and maximum pitch difference MND. These feature quantities are calculated as follows:

Note that max (n) is a function that extracts the maximum value of the series of the variable n.
NND (k) is a value indicating a pitch difference from the immediately preceding note. NL (k) is a value indicating the note length of each note. MNL is a value indicating the maximum value of the note length of all notes. MNDN is a value indicating the maximum value of the pitch difference in all notes.

(3) Syllable number estimation block (3-1) Averaging within a small section Next, in S310, the pitch difference and the note length are reduced based on the indexes and features calculated in steps S130 and S210. The average value of the section unit is calculated (average adjacent pitch difference AND (p) within the small section, average note length ANL (p) within the small section). These average values are calculated as follows:

  AND (p) is an average value of pitch differences NND (k) assigned to each note belonging to the small section #p. However, since the pitch difference NND (ks (p)) assigned to the first note index ks (p) in the small section #p is a pitch difference from the notes belonging to the previous small section, Not applicable. ANL (p) is an average value of the note lengths NL (k) assigned to the notes belonging to the small section #p.

(3-2) Syllable Number Scoring Next, in S320, based on the feature amount calculated in each step of S210 and S310 and the average value in the small section, a plurality of types of syllable number scores (this value) (Indicator that the number of syllables per note in the small section increases as the value of. There are two types of syllable number scores: a note length score NLSC (p) and a pitch difference score NDSC (p). These syllable number scores are calculated as follows:

  NLSC (p) is a syllable number score corresponding to the average note length in a small section. Specifically, the addition of the syllable number score is recorded according to the ratio of the average note length in the small section to the maximum note length. That is, the calculation is performed such that the longer the average note length in the small section, the larger the number of syllables per note in the small section.

  NDSC (p) is a syllable number score according to the average difference in adjacent pitches in a small section. Specifically, the subtraction of the syllable number score is recorded according to the ratio of the average adjacent pitch difference in the small section to the maximum pitch difference. That is, the calculation is performed so that the smaller the average adjacent pitch difference in the small section, the larger the number of syllables per note in the small section.

(3-3) Calculation of Syllable Number Next, in S330, the syllable number DPN (p) of lyrics to be assigned to each subsection #p is calculated based on each syllable number score calculated in S320. Prior to the calculation of the number of syllables, an instruction for setting the weighting parameter UP = {α ₁ , α ₂ } is received from the user via the operation receiving unit 14 (S340). This weighting parameter UP is a value that defines weighting for two types of syllable number scores (how much importance is given to which syllable number score). By increasing the weighting parameter of the more important syllable number score, the number of syllables is increased. The degree of involvement of the syllable number score in the calculation result can be increased. The syllable number DPN (p) corresponding to each small section #p is calculated as follows.

Note that round (n) is a rounding function of the variable n to an integer. In the most common example, rounding is performed to round off the numbers after the decimal point, but this is not limiting, and the boundary for rounding up or down the numbers after the decimal point depends on the intention of the designer or user. Various values can be adopted.

The syllable number DPN (p) is a value obtained by weighting and averaging two types of syllable number scores with a weighting parameter UP, and multiplying the number by the number of notes in a small section, and rounding it to an integer. A simple arithmetic average can be obtained by setting the values α ₁ and α ₂ of the weighting parameter UP to the same value.

The sequence of the syllable number DPN (p) calculated in S330 is provided to the display interface process of (4) (S350).
(4) Display Interface Next, in S410, the display section 13 displays the number of syllables of the lyrics in units of small sections calculated in S330. Specifically, the number of syllables may be displayed only with character (text) information, or may be displayed graphically in combination with musical score information (for example, a piano roll score).

  As an example of the processing contents of the display interface, the following program control syntax is shown.

According to the above control syntax, the number of syllables of lyrics in units of small sections can be represented by the same number of “o” characters in the order of the small section index number p. In addition, a new line is inserted at the break of the small section, and a blank line is inserted at the break of the large section.

  FIG. 5 is an explanatory diagram showing a syllable number display example 1 in a text format that represents the number of syllables of lyrics by the number of “◯” characters. In this syllable number display example 1, the number of syllables in one subsection per line is displayed together, and a line feed is made for each subsection. A blank line for one line is inserted at the break of the large section so that the group of syllable numbers for each large section can be visually recognized. Furthermore, the numerical value of the number of syllables for each small section may be displayed at the head (or the tail) of the line.

  FIG. 6A is an explanatory diagram showing a visual-type syllable number display example 2 in which the number of syllables of lyrics is displayed in association with notes of a score (piano roll score). In this syllable number display example 2, a piano roll score is displayed based on the musical score information of the singing melody, and in correspondence with the display position of the small section #p in the piano roll score, the small section # is displayed below the piano roll score. The number of syllables (numerical value) of the lyrics assigned to p is displayed.

  Furthermore, this syllable number display example 2 also has a user interface function for inputting lyrics. Therefore, a lyric input box for the user to enter the text of the lyric is provided below the piano roll score. The lyrics input boxes are arranged at positions corresponding to the notes of the piano roll score, respectively, and have a width corresponding to the time from the start timing of the corresponding note to the start timing of the next note. When the user selects a lyrics input box using the operation reception unit 14 and inputs a desired character, lyrics can be input to the lyrics input box. Of the number of syllables assigned in units of small sections, the number of syllables assigned to which note can be freely determined by the user.

  FIG. 6B is an explanatory diagram showing an example of lyrics input. As shown in this figure, 1 to 2 character lyrics are input to each of the 7 lyrics input boxes, which are the same as the number of notes in the small section, and the recommended number of syllables shown in this small section is shown. Lyrics are entered.

[Correspondence between Configuration described in Embodiment and Configuration described in Claims]
Here, the correspondence between the components of the lyrics syllable number presentation device 1 of the embodiment and the configurations described in the claims will be described.

  The control unit 15 of the embodiment corresponds to a melody structure analysis unit, a feature amount analysis unit, a syllable number calculation unit, and a presentation unit in the claims. More specifically, the large section estimation in S110, the small section estimation in S120, and the small section index assignment processing in S130 in the syllable number presentation process (see FIG. 2) executed by the control unit 15 corresponds to the melody structure analysis means. Further, the note analysis process of S210 corresponds to a feature amount analyzing unit. Further, the intra-interval averaging in S310, the syllable number scoring in S320, and the syllable number calculation processing in S330 correspond to the syllable number calculating means. Further, the processing of the display interface in S410 corresponds to a presentation unit.

Moreover, the operation reception part 14 of embodiment corresponds to the designation | designated means in a claim.
[effect]
According to the lyrics syllable number presentation device 1 of the embodiment, the following effects can be obtained.

  Extracting features (separation structure, note analysis) regarding the singing melody from the musical score information of the singing melody, and displaying the total number of syllables of the lyrics in units of small sections calculated based on the features, the user's lyrics Can support the work. Thereby, the user can create lyrics that match the singing melody with reference to the displayed number of syllables. In particular, the total number of syllables of lyrics can be presented in units of small sections, which not only facilitates the work of assigning the number of lyrics syllables, but also allows the user to freely assign syllables to individual notes within a small section. You can also expand the range of user creation. In addition, it becomes possible to assign more syllables than the number of notes in a small section, and it can be expected to create lyrics with high expressive power.

  More for small sections that are easy to sing based on features that affect the ease of local singing of the melody, such as the note length that makes up the singing melody and the pitch difference from the previous note. It is possible to expect the creation of lyrics that are easy to sing based on the number of presented syllables.

  It is possible to calculate a composite syllable number by weighting and averaging a plurality of types of syllable number indexes (note length score, pitch difference score) with weighting parameters. In addition, since the weighting parameter UP can be specified by the user, the number of syllables according to the user's intention to write lyrics can be presented.

  The piano roll score is displayed based on the score information, and the number of syllables assigned to the small section can be displayed in association with the position of the small section on the piano roll score (FIG. 6). The correspondence between subsections and the number of syllables in the lyrics becomes obvious at a glance.

[Modification]
As mentioned above, although embodiment of this invention was described, this invention is not limited to said embodiment at all, It is possible to implement in various aspects.

  In the above-described embodiment, two types of syllable number scores, the note length score NLSC and the pitch difference score NDSC, are weighted and averaged by weighting parameters, and the result obtained by multiplying the number of notes in a small section by rounding to an integer is combined. The total number of syllables is calculated. However, the present invention is not limited to this, and it may be configured such that a note length score NLSC or a pitch difference score NDSC alone multiplied by the number of notes in a small section is rounded and each is output as a single total syllable number. Good. That is, a configuration in which the total number of syllables considering only the note length score or the total number of syllables considering only the pitch difference score is presented to the user. Further, a configuration in which the user can select which syllable number index is used to calculate the total syllable number may be used.

  In the above embodiment, the number of lyrics syllables for each small section is specified based on the average feature value obtained by averaging the feature quantities in note units in small section units in consideration of the ease of singing in small section units. ing. On the other hand, the total number of syllables calculated in units of small sections may be distributed to individual notes in the small section, and the number of syllables of lyrics in the unit of notes may be presented. Specifically, based on the feature value of the note specified by the note analysis block, a syllable number score (an index indicating that the larger the value, the greater the number of syllables assigned to the note) is calculated for each note. The total number of syllables assigned to a small section may be distributed to each note belonging to the small section in accordance with the ratio of the syllable number score of the unit. The syllable number score of a note unit is a numerical value when it is easy to sing in note units, such as when the note length of the note or the immediately preceding rest length is long, or the pitch difference from the immediately preceding note is small. Can be set high.

  In the syllable number display example 2 in FIG. 6A, the pitch or the note length of the notes on the piano roll score displayed on the screen is changed by the operation from the user. You may comprise so that modification can be performed. At that time, according to the change in the feature value related to the modified note, the total number of syllables of the subsection to which the note belongs is recalculated by internal processing, and the total number of syllables of the subsection is displayed on the displayed screen. You may make it update in real time.

  DESCRIPTION OF SYMBOLS 1 ... Lyric syllable number presentation apparatus, 11 ... Memory | storage part, 12 ... Melody data input part, 13 ... Display part, 14 ... Operation reception part, 15 ... Control part, 15a ... ROM, 15b ... RAM, 15c ... CPU.

Claims (7)

Melody structure analysis means for analyzing musical score information of a singing melody and identifying a melody section obtained by dividing the singing melody into specific rest sections;
Analyzing the musical score information of the singing melody and identifying a predetermined characteristic amount relating to the performance of the notes constituting the singing melody;
The melody section according to the statistical feature of the feature quantity of each note belonging to each melody section based on the melody section specified by the melody structure analysis means and the feature quantity of the notes specified by the feature quantity analysis means. Syllable number calculating means for calculating the total number of syllables of the unit lyrics;
A lyric syllable number presentation device comprising: presenting means for presenting a total syllable number of each melody section calculated by the syllable number calculating means to a user in the performance order of the score information. In the syllable number presentation device according to claim 1,
The feature amount analyzing means specifies a feature amount based on the time length of each note,
The syllable number calculating means increases the number of syllables per note in the melody section based on the feature quantity based on the time length of the note, and increases the syllable number per note in the melody section. Calculating the total number of syllables for each melody section,
Lyric syllable number presentation device characterized by. In the syllable number presentation device according to claim 1,
The feature amount analyzing means specifies a feature amount based on a pitch difference from a note immediately before each note,
The syllable number calculation means increases the number of syllables per note in the melody section based on the feature amount based on the pitch difference, and increases the syllable number per note in the melody section. Calculating the total number of syllables for each melody section,
Lyric syllable number presentation device characterized by. Furthermore, the syllable number presentation apparatus of Claim 1 which has the following characteristics.
The feature quantity analyzing means specifies the following two feature quantities (a) and (b) for each note.
(A) A feature amount based on the time length of the note.
(B) A feature value based on a pitch difference from a note immediately before the note.
The syllable number calculation means calculates the note length index and pitch difference index of the number of syllables by the following methods (A) and (B) for each individual melody section based on the feature quantities (a) and (b). A composite syllable number index obtained by calculating a weighted average of a note length index and a pitch difference index calculated for each melody section, adding a predetermined weighting factor, and multiplying this by the number of notes in the melody section Is calculated, a composite total syllable number is calculated by rounding the composite syllable number index to an integer, and the composite total syllable number is output as the total syllable number of lyrics in the melody section.
(A) Based on the feature amount (a) based on the time length of a note, the melody section is such that the longer the average time length of the notes belonging to the melody section, the greater the number of syllables per note in the melody section. The note length index of the number of syllables per note at is calculated.
(B) Based on the feature value (b) based on the pitch difference, the smaller the average pitch difference of the notes belonging to the melody segment, the larger the number of syllables per note in the melody segment. A pitch difference index of the number of syllables per note is calculated. In the syllable number presentation device according to claim 4,
The syllable number presentation device further comprising: a specifying unit for the user to specify a weighting factor used by the syllable number calculating unit to calculate the weighted average. In the syllable number presentation device according to any one of claims 1 to 5,
The presenting means displays the score based on the score information of the singing melody, and associates the performance position of each melody section in the displayed score with the total number of syllables of lyrics calculated for each melody section A device for presenting the number of syllables of lyrics. Analyzing the musical score information of a singing melody, and a melody structure analysis procedure for identifying a melody section obtained by dividing the singing melody into specific rest sections;
Analyzing the musical score information of the singing melody and specifying a predetermined characteristic amount relating to the performance of the notes constituting the singing melody;
The melody section according to the statistical feature of the feature value of each note belonging to each melody section based on the melody section specified by the melody structure analysis procedure and the feature value of the note specified by the feature value analysis procedure The syllable number calculation procedure for calculating the total number of syllables of the unit lyrics,
A program for causing a computer to execute a presentation procedure for presenting a total syllable number of each melody section calculated in the syllable number calculation procedure to a user in the performance order of the score information.