JP2015049310A - Singing model display device, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display a graph of reference pitch of singing in a mode easy for a singer to confirm, when a performance speed of a karaoke musical piece becomes fast by a speed control function.SOLUTION: A singing model display device allows display of a reference graph representing a temporal change of pitch of a reference melody of a musical piece to be performed in a graph display region to which a temporal axis is allocated in an X-axis (a lateral) direction. The reference graph is displayed so as to be scrolled to the left side from the right side of the temporal axis in timing when a reference line fixedly displayed in the center of the graph display region intersects with a present singing position in the reference graph. When a performance speed has increased, as shown in [b], [c] and [d], the singing model display device determines an expansion/contraction degree in which a ratio of a display width of the temporal axis to a time becomes smaller as moving away from the reference line to a future direction and a past direction of the temporal axis, and the temporal axis of the whole graph display region matches a prescribed time length, according to an increase degree of the performance speed. The singing model display device then draws the reference graph in association with the temporal axis reflecting the determined pension/contraction degree.

Description

  The present invention relates to a technique for displaying information indicating a reference pitch of singing in karaoke.

  2. Description of the Related Art Conventionally, in a karaoke apparatus, one having a singing support function for displaying a reference pitch as an example of singing karaoke music on a display is known (for example, see Patent Document 1). The karaoke apparatus having the singing support function displays a graph of a temporal change in the reference pitch as an example for a certain period in the future from the current performance position on the display. In addition, as a method of advancing the display section of the reference pitch graph in accordance with the progress of the performance of the karaoke music, the reference pitch graph is directed to the reference line indicating the current performance position and the karaoke music performance speed is adjusted. There is something that scrolls sequentially at a speed.

JP 2012-203343 A

  By the way, in a karaoke apparatus, in order for a singer to adjust the performance speed of karaoke music to the speed which he desires, the speed control function which can change the performance speed of karaoke music arbitrarily by operation of a speed control button etc. Have. If the performance speed is changed by the speed control function when the singing reference pitch graph is displayed, the performance and reference sound can be changed by changing the scrolling speed of the reference pitch graph according to the changed value. It is conceivable to maintain synchronization with the high graph.

  However, as the performance speed increases, the reference pitch graph scrolls faster, which means that the individual pitch information in the reference pitch graph is displayed compared to the standard performance speed. It means that the time that is being shortened. In such a case, the singers should make full use of the singing support function, even though the example of the singing is displayed, but there is a risk of the singers disappearing one after another without having time to see them. Will not be able to.

  The present invention has been made to solve the above problem, and even when the performance speed of karaoke music is increased by the speed control function, it is easy for the singer to confirm the graph of the singing reference pitch. An object of the present invention is to provide a technique for displaying in an aspect.

  The singing model display device of the present invention includes a storage unit, a speed changing unit, and a display control unit. The storage means stores reference data representing the reference melody of the singing part of the music played by the performance means for outputting the music. The speed changing means changes the performance speed of the music played by the performance means. Based on the reference data, the display control means is assigned a time axis corresponding to a predetermined time length to the temporal change of the pitch of the reference melody of the music to be played in synchronization with the progress of the performance of the music by the performance means. A reference graph represented in association with the graph display area is displayed on a predetermined display means. The reference graph is displayed as an animation that is sequentially scrolled from the future direction of the time axis so that the reference line fixedly displayed on the graph display area and the current singing position in the reference graph intersect. Furthermore, when the performance speed of the music is increased from the standard value, the display control means decreases the ratio of the display width to the time on the time axis as the distance from the position of the reference line in the future direction of the time axis decreases, and the graph. The degree of expansion / contraction in which the time axis of the entire display area matches a predetermined time length is determined according to the degree of increase in performance speed. Then, a reference graph is drawn in association with the time axis reflecting the determined degree of expansion / contraction.

  According to the present invention, when the performance speed is increased, by compressing the time axis of the reference graph at a position far from the reference line indicating the performance position in the future direction of the time axis, the same display range can be obtained. It is possible to display a lot of reference pitch information at an early stage. Therefore, a sufficient display time is ensured until the reference line is reached after the reference pitch to be sung in the future appears at the tip of the display area of the reference graph. Thereby, the singer confirms the reference pitch to be sung in the future, and a time margin is created for preparing the utterance in accordance with the confirmed reference pitch. In addition, by making the time length assigned to the time axis of the entire graph display area the same when the performance speed has not increased and when the performance speed has increased, regardless of whether the performance speed has increased or not, The singer can always check the future reference pitch for a certain amount of time. On the other hand, at the position close to the reference line indicating the performance position, the ratio of the display width on the screen to the time on the time axis is larger than that of the distant part, so the reference graph scrolls relatively quickly and the performance speed increases. The singer can recognize that

  The reference graph display control method in the present invention can also be applied to the display of the reference graph after the singing time has passed, that is, after passing through the reference line. Specifically, a configuration as described in claim 2 can be considered. That is, the graph display area includes a time axis after the performance time has elapsed. Further, the display control means, when the performance speed is increased from the standard value, the ratio of the display width to the time on the time axis decreases as the distance from the position of the reference line moves to the future direction and the past direction of the time axis, and The degree of expansion / contraction in which the time axis of the entire graph display area matches a predetermined time length is determined according to the degree of increase in performance speed. Then, a reference graph is drawn in association with the time axis reflecting the determined degree of expansion / contraction. By doing so, the degree of expansion and contraction of the time axis of the reference graph when the performance speed increases can be made symmetric with respect to the reference line, and a scroll with a sense of unity before and after the singing time can be realized.

  The singing model display device according to claim 3 has the following characteristics. That is, the reference graph is represented using a pattern having a width corresponding to the time length of the sound in the time axis direction for each individual sound constituting the reference melody indicated by the reference data. In addition, when the performance speed is increased from the standard value, the display control means expands / contracts the width of each sound symbol in the reference graph according to the ratio of expanding / decreasing the display width per time on the time axis. draw. By doing this, even if the time axis of the reference graph is expanded or contracted at each part due to an increase in performance speed, the reference pitch pattern drawn with the width of the sound length corresponding to the expanded time axis Can be used to display the reference graph. Thereby, the display timing on the time axis of the design of each sound displayed when the performance speed is the standard value can be prevented from changing even if the performance speed changes.

  In addition, as described in claim 4, the present invention can also be realized in the form of a program executed on a computer or a storage medium storing the program.

1 is a block diagram showing a schematic configuration of a karaoke apparatus 10. FIG. Explanatory drawing which shows the example of a display of the singing guide graph according to performance speed. The flowchart which shows the procedure of a graph drawing process.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In addition, this invention is not limited to the following embodiment, It is possible to implement in various aspects.
[Description of configuration of karaoke equipment]
As shown in FIG. 1, the karaoke apparatus 10 includes a control unit 11, a storage unit 12, a music playback unit 13, an audio control unit 14, a video control unit 15, and an operation unit 17. The karaoke apparatus 10 displays on the monitor 23 a function for playing karaoke music requested by the user and a singing guide graph for visualizing the reference melody of the singing part and the singing result of the user in synchronization with the progress of the performance of the karaoke music. It has the function to do. The control unit 11 includes a CPU, a ROM, a RAM, and the like, and controls the operation of the karaoke apparatus 10 by executing various programs. The control part 11 draws the singing guide graph (refer FIG. 2) corresponding to the music played by performing the program of the graph drawing process (refer FIG. 3) mentioned later. And the control part 11 displays the drawn song guide graph on the monitor 23. FIG.

  The storage unit 12 is a storage device such as a hard disk drive. The storage unit 12 stores a program executed by the control unit 11 and data used at the time of execution. The storage unit 12 has a karaoke database in which a large number of music data corresponding to each karaoke music is recorded. Each piece of music data is composed of performance data (MIDI data) corresponding to the MIDI (Music Instrument Digital Interface) standard. This MIDI data includes reference data for defining a melody (reference melody) to be sung as a singing part, in addition to performance data for playing a melody of an accompaniment part of a karaoke piece. This reference data is used for displaying a reference graph for visualizing the reference melody of the singing part and the reference for scoring the singing result by the user to the user.

  The music playback unit 13 plays back music based on the music data stored in the storage unit 12. The voice control unit 14 is a device that controls voice input / output, and includes an input unit 14a, an output unit 14b, and the like. A microphone 19 is connected to the input unit 14a. Thereby, the input part 14a acquires a user's song sound. A speaker 21 is connected to the output unit 14b. The output unit 14 b outputs the sound source signal of the music reproduced by the music reproducing unit 13 and the sound source signal of the singing sound output from the input unit 14 a to the speaker 21. The speaker 21 outputs the sound source signal output from the output unit 14b in place of sound.

  The video control unit 15 reproduces and outputs video based on the video data sent from the control unit 11. A monitor 23 for displaying video is connected to the video control unit 15. Thereby, the video control unit 15 displays the reproduced video on the monitor 23. The operation unit 17 is an input device for performing various operations on the karaoke apparatus 10. The operation unit 17 includes a touch panel and various input buttons, and outputs an operation signal corresponding to the input operation to the control unit 11. The operation unit 17 is provided with a speed control switch. The speed control switch is operated when changing the performance speed of the music played by the music playback unit 13. With this speed control switch, the performance speed of the music can be increased or decreased step by step from the standard performance speed. In addition, since the other structure and function of the karaoke apparatus 10 are based on a well-known technique, detailed description here is abbreviate | omitted.

[Explanation of singing guide graph]
The configuration of the singing guide graph drawn by the control unit 11 and displayed on the monitor 23 will be described with reference to FIG.

  FIG. 2A is a display example of the singing guide graph when the performance speed of the music is set to the standard value. In this embodiment, a singing guide graph when the performance speed is a standard value (no increase or decrease in speed) is used as a basic form, and when the performance speed of the music is increased from the standard value by the speed control switch, it depends on the degree of increase. The display style of the singing guide graph is changed.

  As illustrated in FIG. 2A, the singing guide graph is configured by drawing a reference graph representing the reference melody of the singing part and a singing line representing the pitch of the user singing result in the graph display area 30a. Is done. The graph display area 30a is assigned a new time axis from the left to the right in the horizontal axis (X-axis) direction, and a pitch in which the upper part is high and the lower part is low in the vertical (Y-axis) direction. It has been.

  A reference line indicating the current performance position is fixedly displayed at the center in the horizontal axis direction of the graph display area 30a. The time axis assigned in the horizontal axis direction of the graph display area 30a has a future performance period (right side) of 5 seconds (0 to 5 seconds) and a past performance period (left side) with the position of the reference line as the current time. This represents a performance period of 5 seconds (0 to -5 seconds) for a total of 10 seconds. Further, when the performance speed is a standard value (no increase or decrease), the ratio of the display width on the screen to the time is set to be uniform over the entire time axis. That is, the scales of the time axis in the graph display area 30a are equally spaced.

  The reference graph is represented as a bar graph in which a band-like pattern having a width corresponding to the time length of the sound is connected in a staircase pattern for each sound constituting the reference melody. The horizontal width of each sound in the reference graph is drawn with a length corresponding to the ratio of the display width on the screen to the time on the time axis of the graph display area 30a. The control unit 11 executes an animation for sequentially scrolling the reference graph from right to left at a speed synchronized with the progress of the performance so that the reference graph intersects the reference line at a position corresponding to the singing timing.

  The singing line represents the temporal change in the pitch of the singing voice obtained by analyzing the user's singing voice inputted to the input unit 14a via the microphone 19 during the performance of the music. It is a line graph drawn by plotting corresponding to an axis (pitch) and an X axis (time). The control unit 11 executes an animation that sequentially scrolls the singing line in the left direction at a speed synchronized with the progress of the performance, starting from the reference line indicating the current time.

  FIG. 2B is a display example of a singing guide graph when the performance speed is increased by one step (performance speed 1) from the standard value at the same performance timing as the example of FIG. 2A. In addition, in FIG. 2 [b]-[d], description of a name is abbreviate | omitted about the structure (a reference line, a reference | standard graph, a song line) similar to what was illustrated by FIG. 2 [a].

  When the performance speed of the music is increased from the standard value by the speed control switch, the ratio of the display width on the screen to the time on the time axis of the graph display area 30b is increased or decreased, and the time axis is partially expanded or contracted. However, even if the ratio of the display width on the screen to the time is increased or decreased, the performance period for the future and the performance period for the past are each reduced to 5 for the entire time axis, as in the basic mode illustrated in FIG. A total duration of 10 seconds is assigned to each second. That is, even if the time axis is partially expanded and contracted, the total time on the time axis is the same as when the performance speed is the standard value. Further, the degree of expansion / contraction of the time axis is increased as the performance speed increases.

  In the example of FIG. 2B, the display width with respect to time in a period of up to 3 seconds in the future direction of the time axis from the reference line and a period of up to -3 seconds (-3 seconds to 0 seconds to 3 seconds) in the past direction. The ratio is larger than when the performance speed is the standard value. That is, the time axis is extended. Further, the degree of extension increases as the time is closer to the reference line, and the degree of extension gradually decreases as the time moves away from the reference line. On the other hand, the ratio of the display width to time in the period after 3 seconds in the future direction of the time axis and the period after −3 seconds in the past direction (−5 seconds to −3 seconds, 3 seconds to 5 seconds) is the performance speed. Is smaller than the standard value. That is, the time axis is compressed. Further, the degree of compression is smaller as the time is closer to the reference line, and the degree of compression is gradually increased as the time is away from the reference line.

  The reference graph drawn on the graph display area 30b is drawn with a pattern having a horizontal width in which the time length of the sound corresponds to the ratio of the display width to the different time for each part of the time axis. Therefore, in the period in which the time axis is expanded (or compressed), the symbols of the reference graph are expanded (or compressed) according to the degree of expansion (or compression). The reference graph drawn in this way is scrolled from right to left at a speed synchronized with the progress of the performance so that the portion corresponding to the singing timing intersects the reference line.

  Moreover, the singing line drawn on the graph display area 30b is drawn by plotting the temporal change of the pitch of the singing voice in association with the expanded and contracted time axis. The singing line drawn in this way is scrolled to the left at a speed synchronized with the progress of the performance, starting from the reference line indicating the current time. Note that since the performance speed increases, the number of sounds played in 10 seconds increases, so the reference graph and singing line drawn on the graph display area 30b have a wider range than the case of FIG. Sound information is drawn.

  FIG. 2C is a display example of a singing guide graph when the performance speed is increased by two stages (performance speed 2) from the standard value at the same performance timing as the example of FIG. 2A. In this case, as in the case of FIG. 2B, the time axis is extended in a period of −3 seconds to 0 seconds to 3 seconds on the time axis. Further, the time axis is compressed in a period of −5 seconds to −3 seconds and 3 seconds to 5 seconds on the time axis. However, in the case of FIG. 2 [c], the degree of increase in performance speed is larger than that in the case of FIG. 2 [b]. For this reason, the degree of expansion / contraction of the time axis assigned to the graph display region 30c is larger than that in the example of FIG. 2B, and the state of expansion / contraction of the time axis becomes more remarkable.

  Also in the case of FIG. 2 [c], the total time on the time axis remains 10 seconds, which is the same as when the performance speed is the standard value. The reference graph drawn on the graph display area 30c is drawn with a pattern having a horizontal width in which the time length of the sound corresponds to the ratio of the display width to the time that differs for each part of the time axis. Moreover, the singing line drawn on the graph display area 30b is drawn by plotting the temporal change of the pitch of the singing voice in association with the expanded and contracted time axis.

  FIG. 2D is a display example of a singing guide graph when the performance speed is increased by five steps (performance speed 5) from the standard value at the same performance timing as the example of FIG. 2A. In this case, as in the case of FIGS. 2B and 2C, the time axis is extended in a period of −3 seconds to 0 seconds to 3 seconds on the time axis. Further, the time axis is compressed in a period of −5 seconds to −3 seconds and 3 seconds to 5 seconds on the time axis. In the case of FIG. 2D, the increase rate of the performance speed is the largest in the example illustrated in FIG. 2, and the degree of expansion / contraction of the time axis assigned to the graph display region 30d is also the largest in the example illustrated in FIG. ing. For this reason, the expansion and contraction of the time axis is most remarkable.

  In the case of FIG. 2D, the total time on the time axis remains 10 seconds, which is the same as when the performance speed is the standard value. The reference graph drawn on the graph display area 30d is drawn with a pattern having a horizontal width in which the time length of the sound corresponds to the ratio of the display width to the different time for each part of the time axis. Moreover, the singing line drawn on the graph display area 30d is drawn by plotting the temporal change of the pitch of the singing voice in association with the expanded and contracted time axis.

[Description of graph drawing processing]
The procedure of the graph drawing process executed by the control unit 11 will be described with reference to the flowchart of FIG. This process is a process executed in parallel with the music performance process requested by the user under the condition that the execution of the function for displaying the singing guide graph is set. By completing the procedure from the start to the end shown in this flowchart once, a singing guide graph for one screen is drawn. That is, if the frame rate of the image displayed on the monitor 23 is 30 fps, a series of processes from the start to the end of the graph drawing process is executed 30 times per second.

  In S100, the control part 11 confirms the setting value of the present performance speed with respect to the music in performance. In S102, the control unit 11 confirms the coordinates in the X-axis (lateral) direction to be drawn in the graph display area. Here, one dot or a predetermined number of dots are sequentially arranged from the start end side in the section from the start end (X = minimum value, 0 in the present embodiment) to the end (X = maximum value) of the X coordinate of the graph display area. An undrawn section having a width of is specified as a drawing target. In S104, the control unit 11 confirms the coordinates in the Y-axis (vertical) direction to be drawn in the graph display area. Here, the section from the start end (Y = minimum value, 0 in this embodiment) to the end (Y = maximum value) of the Y coordinate of the graph display area is specified as a drawing target.

  In next step S106, the control unit 11 calculates the X coordinate (the center of the time axis) of the reference line representing the current performance position on the time axis assigned to the graph display area and the X coordinate specified as the drawing target in S104. Calculate the distance. In S108, the control unit 11 calculates the expansion / contraction rate of the time axis assigned to the X coordinate to be drawn based on the performance speed setting value confirmed in S100 and the distance calculated in S106.

  Here, when the performance speed is set to a standard value or a value slower than the standard value, the ratio of the display width on the screen to the time is made uniform (no expansion / contraction) over the entire time axis, and the graph display area Set the time scale to be equally spaced. On the other hand, when the performance speed is set to a value faster than the standard value, the ratio of the display width on the screen to the time on the time axis is increased / decreased according to the increase degree of the performance speed, and then the X coordinate of the drawing target is set. The expansion / contraction rate of the allocated time axis is calculated. A specific example of the technique for partially expanding and contracting the time axis according to the increase in performance speed is as described above with reference to FIG. It is assumed that the correlation between the set value of the performance speed and the expansion / contraction rate for each part of the time axis is registered in advance in the memory as a default value.

  In S110, the control unit 11 draws the reference graph and the song line image of the performance period corresponding to the section composed of the X coordinate and the Y coordinate to be drawn in a predetermined drawing area provided in the memory. Specifically, the performance time corresponding to the X coordinate to be drawn is calculated based on the information indicating the progress time of the musical performance and the expansion / contraction rate of the time axis. Then, the reference pitch to be drawn is specified from the reference data corresponding to the performance music with reference to the performance information corresponding to the performance time to be drawn, and the X axis (time) and Y axis (sound) of the graph display area are specified. Draw the design of the reference graph at the corresponding position (high). Further, a temporal change in the pitch of the section corresponding to the performance time to be drawn is extracted from the singing voice signal acquired through the input unit 14a to which the microphone 19 is connected, and the X axis ( The pattern of the singing line is drawn at a position corresponding to the time) and the Y axis (pitch).

  In next S112, the control unit 11 determines whether or not the drawn section has reached the end coordinate of the X axis in the graph display area. When the drawn section has not reached the end coordinate of the X axis (S112: NO), the control unit 11 returns to S102. In step S102, the control unit 11 confirms the X coordinate of the drawing target next to the previously drawn section. Thereafter, the processing of S102 to S112 is sequentially repeated, and when it is determined that the section that has been drawn in S112 has reached the end coordinate of the X axis (S112: YES), the control unit 11 ends this processing. Thus, the image of the singing guide graph for one screen is completed by sequentially repeating the processes of S102 to S112 until the end of the X axis is reached. The drawn image of the singing guide graph is displayed and output on the monitor 23 via the video control unit 15 at a predetermined timing.

  In the graph drawing described above, while the singing guide graph for one screen is being drawn, it is necessary to unify the performance speed setting values applied to the calculation for drawing to the same value. Therefore, the performance speed is confirmed only once (S100) when drawing for one screen is started, and until the drawing for one screen is completed, the setting value of the performance speed confirmed first is used as a reference.

[effect]
According to the karaoke apparatus 10 of the above embodiment, the following effects can be obtained.
When the performance speed increases, the time axis of the reference graph can be compressed and displayed at a position far from the reference line indicating the performance position in the future direction on the time axis. In this way, more reference pitch information can be displayed earlier in the same display range than when the time axis is not compressed. This ensures sufficient display time from the time when the reference pitch to be sung in the future appears at the right end of the graph display area until the reference line is reached, and the singer confirms the reference pitch and prepares for utterance. This gives you time to do it. On the other hand, at a position close to the reference line, the time axis is extended from the distant part. In this way, the singer can recognize that the reference graph scrolls relatively quickly near the reference line and the performance speed increases. In addition, by making the time length assigned to the time axis of the entire graph display area the same when the performance speed has not increased and when the performance speed has increased, regardless of whether the performance speed has increased or not, The singer can always check the future reference pitch for a certain amount of time.

  With respect to the time axis in the past direction from the reference line, the time axis can be expanded and contracted in accordance with the increase in performance speed. By doing so, the degree of expansion and contraction of the time axis when the performance speed increases can be made symmetric with respect to the reference line, and a scroll with a sense of unity before and after the singing timing can be realized.

  When the performance speed increases, the horizontal width of the strip-shaped symbol expressing the sound length in the reference graph can be expanded and contracted according to the ratio of expanding and contracting the display width per time on the time axis. In this way, the display timing on the time axis of the design of each sound displayed when the performance speed is a standard value can be kept unchanged even if the performance speed changes.

[Correspondence with configuration described in claims]
The correspondence between the configuration described in the embodiment and the configuration described in the claims is as follows.
The control unit 11 corresponds to display control means. The storage unit 12 corresponds to storage means. The music reproducing unit 13 corresponds to a performance means. The operation unit 17 corresponds to speed changing means. The monitor 23 corresponds to display means.

[Modification]
In the above embodiment, an example in which the present invention is applied to a karaoke apparatus has been described. Apart from this, the present invention may be applied to a portable information processing terminal such as a so-called smartphone or tablet computer, a personal computer, or the like. Or you may apply this invention to the tablet computer type remote control terminal used for operation of a karaoke apparatus. In that case, the remote control terminal may not be provided with performance means for playing the music, and a configuration in which a reference graph is displayed on a monitor provided in the remote control terminal in synchronization with the performance of the music by the karaoke device is conceivable.

  DESCRIPTION OF SYMBOLS 10 ... Karaoke apparatus, 11 ... Control part, 12 ... Memory | storage part, 13 ... Music reproduction part, 14 ... Audio | voice control part, 14a ... Input part, 14b ... Output part, 15 ... Image | video control part, 17 ... Operation part, 19 ... Microphone, 21 ... speaker, 23 ... monitor.

Claims (4)

Storage means for storing reference data representing a reference melody of a singing part of a song played by a performance means for playing out the music;
Speed changing means for changing the performance speed of the music played by the performance means;
Based on the reference data stored in the storage means, the time change of the pitch of the reference melody of the music to be played is synchronized with the progress of the performance of the music by the performance means for a predetermined time length. The future direction of the time axis so that the reference line fixedly displayed on the graph display area and the current singing position in the reference graph intersect with the reference graph that is associated with the graph display area to which the axis is assigned Display control means for displaying an animation that is sequentially scrolled from a predetermined display means,
When the performance speed is increased from the standard value by the speed changing means, the display control means decreases the ratio of the display width to the time on the time axis as it moves away from the position of the reference line in the future direction of the time axis. And the degree of expansion / contraction in which the time axis of the entire graph display area matches the predetermined time length is determined according to the degree of increase in the performance speed, and is associated with the time axis reflecting the determined degree of expansion / contraction. Drawing the reference graph;
A singing model display device characterized by the above. In the singing model display device according to claim 1,
The graph display area includes a time axis after the performance time has elapsed,
When the performance speed is increased from the standard value by the speed changing means, the display control means increases the display width with respect to the time on the time axis as it moves away from the reference line position in the future direction and the past direction of the time axis. The degree of stretch in which the ratio is reduced and the time axis of the entire graph display area coincides with the predetermined time length is determined according to the degree of increase in the performance speed, and the time axis reflecting the determined degree of stretch Drawing the reference graph in association with each other;
A singing model display device characterized by the above. In the singing model display device according to claim 1 or 2,
The reference graph is represented for each individual sound constituting the reference melody indicated by the reference data using a pattern having a width corresponding to the time length of the sound in the time axis direction,
When the performance speed is increased from the standard value by the speed changing means, the display control means determines the width of each symbol in the reference graph according to the ratio of expansion / contraction of the display width per time on the time axis. Stretching and drawing the reference graph;
A singing model display device characterized by the above. The pitch of the reference melody of the music to be played is synchronized with the progress of the performance of the music by the performance means based on the reference data representing the reference melody of the singing part of the music played by the performance means for outputting the music. A reference graph that indicates a temporal change of the time axis corresponding to a graph display area to which a time axis for a predetermined time length is assigned, a reference line fixedly displayed on the graph display area, and a current singing position in the reference graph Display control processing for displaying on the predetermined display means an animation that sequentially scrolls from the future direction of the time axis,
When the performance speed is increased from the standard value by the speed changing means for changing the performance speed of the music played by the performance means, the time on the time axis is further away from the position of the reference line in the future direction of the time axis. The ratio of the display width on the screen to the screen is reduced, and the degree of expansion / contraction in which the time axis of the entire graph display area matches the predetermined time length is determined according to the degree of increase in the performance speed, and the determined expansion / contraction Display control processing for drawing the reference graph in association with the time axis reflecting the degree,
A program to be executed by a computer.