JP2004109376A - Fingering display method and program therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fingering display method, capable of displaying fingering by imparting position data on only a portion of a hand print, drawing a hand print matching a keyboard size and the size of a keyboard on a screen, and displaying fingering felt to be natural, and a program therefor. <P>SOLUTION: Previously stored drawing data are read out (S51) and the coordinate values of the center of the back of a hand are found (S52). Then the coordinate values of respective positions of the back of the hand are found (S54) by using the coordinate values of the center of the back of the hand and default data of the hand print. Further, coordinate values of the positions of the respective fingers are found (S55) by using the coordinate values of the respective positions of the back of the hand and default data of the hand print. Then the hand print is drawn (S56) by using the found coordinate values of the respective positions of the back of the hand and the coordinate values of the positions of the respective fingers. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a fingering display method and a program therefor, and in particular, by giving position data of only a part of a handprint, a handprint can be drawn and displayed by fingering, and the size of the keyboard and the keyboard can be easily displayed. The present invention relates to a fingering display method capable of drawing a handprint that matches a size on a screen display and a program therefor.
[0002]
[Prior art]
2. Description of the Related Art Electronic keyboard musical instruments in which a fingering image is displayed together with a keyboard and a player practices key pressing using the image as a guide are well known. There is also known a lesson system in which music devices such as a keyboard and an electronic piano are connected to a computer, an image of fingering is displayed on the computer together with a keyboard, and a trainee can practice while watching the image.
[0003]
In Japanese Patent Application Laid-Open No. 2000-11470, a plurality of types of operation fingering image data and a plurality of types of elapsed fingering image data are stored in a ROM and correspond to fingering indicating the start of key-on processing key operation. The operation fingering image data is selected from the ROM, read out, given to the display device for display, and furthermore, the progression operation corresponding to the fingering indicating the operation until the start of the operation of the key to be pressed next after the note-off process. A fingering display device is described in which finger image data is selected from a ROM, read out, provided to a display device, and displayed to provide a fine-tuned performance guide in accordance with the progress of the music.
[0004]
Japanese Patent Application Laid-Open No. 2001-324919 discloses that the structure of a display finger is divided into a hand part and a finger part, and the finger part is further divided into three parts by joints. The key part is moved on the xy plane in accordance with the type of the finger part used for depressing the key, and the operation of depressing a plurality of keys to generate a chord constituent sound is performed by moving the position of the hand part on the z-axis. There is described a performance operation display device that displays a flow of a performance operation in a moving image by expressing the flow.
[0005]
[Problems to be solved by the invention]
In order to display a detailed fingering, a large amount of data for generating a fingering image is required. As shown in the fingering display device described in JP-A-2000-112470, this data is used. In the case of storing the image data as image data, that is, bitmap data, the data amount is large, a large storage capacity is required, and the storage of the data requires a great deal of time and labor.
[0006]
Further, when the keyboard size or the size of the keyboard on the screen is changed, a handprint matching the keyboard size or the size of the keyboard on the screen is not drawn with the data as it is.
[0007]
As described in Japanese Patent Application Laid-Open No. 2001-324919, data for generating a fingering image is stored as position data of each part of a bill, and the fingering image is generated by moving or rotating the bill. In the display, even if the size of the keyboard or the size of the display changes, it can be handled by setting it as a parameter.
[0008]
However, in this case, the fingering display becomes possible only after all the data on the base point positions of all the parts and the movement and rotation from the base point are stored in advance. In this case as well, the data amount becomes large, and the data amount becomes large. There is a problem that input requires a lot of time and effort.
[0009]
The present invention solves the above-mentioned conventional problems, and can display fingering by giving position data of only a part of a bill, and easily fits a keyboard size or a size of a keyboard on a screen display. It is an object of the present invention to provide a fingering display method capable of drawing a handprint and displaying a fingering that feels natural, and a program therefor.
[0010]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a fingering display method of drawing a handprint based on position data of each part of the handprint on a keyboard and performing fingering display, by preparing default data capable of drawing a handprint. If the storage position data stored in advance is not enough to draw the handprint, the position data of each part of the handprint for the keyboard is derived using the storage position data and the default data. The first feature is that a handprint is drawn using the position data of each part.
[0011]
Further, according to the present invention, the position data of each part of the bill includes the position data of the base of the finger from the center of the back of the hand and the position of the base of the wrist on the thumb side and the little finger side, and the position data of the tip of the finger from the base of the finger. There is a second feature in that it includes.
[0012]
Further, the present invention is characterized in that the stored position data is only the position data of the tip of the finger to be pressed, and the position data of the other parts of the bill are derived using the position data and the default data. There are three features.
[0013]
Further, in the present invention, the storage position data and the default data are normalized with respect to a key width and a key depth, and the data is multiplied by a key width and a key depth to obtain position data for the keyboard. There is a fourth feature in that is derived.
[0014]
Also, the present invention is characterized in that a height parameter indicating a height position with respect to a key is added to the storage position data, and the display of the key or finger is changed or an additional display is performed according to the height parameter. Has a fifth feature.
[0015]
Further, the present invention provides a computer which reads a pre-stored position data of a finger, the position data of the finger, the coordinates of a key where the finger is located, and default data of a bill by using default data of a hand. The procedure for obtaining coordinate values, the procedure for obtaining the coordinate values of the center of the back of the hand and the default coordinates of the handprint, and the procedure for obtaining the coordinate values of the respective parts of the back of the hand, using the default coordinates of the hand and the coordinates of the respective parts of the back of the hand The sixth feature is that the program is a program for executing a procedure of obtaining coordinate values of the positions of the fingers, and a procedure of displaying the fingering using the coordinate values of the positions of the respective parts of the back of the hand and the coordinate values of the positions of the fingers. There is.
[0016]
According to the first to third features, fingering can be displayed by giving position data of only a part of a bill, so that drawing data can be reduced to reduce its storage capacity and labor required for its input. it can.
[0017]
Further, according to the fourth feature, it is possible to easily cope with a change in the size of the keyboard or the size of the keyboard on the screen display, and it is possible to display fingering that feels natural.
Further, according to the fifth feature, the guide in the height direction is also possible.
[0018]
Further, according to the sixth feature, it is possible to easily practice fingering by installing the program on a personal computer or the like.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an example of a fingering practice system to which the present invention can be applied. In the personal computer 1, a program for performing fingering display according to the present invention is installed. On the display screen of the personal computer 1, a fingering image is displayed along with the keyboard in accordance with a predetermined operation, and the user can practice fingering on the keyboard 4 or the like according to the displayed fingering image.
[0020]
A MIDI device 3 can be connected to the personal computer 1 via a MIDI interface 2. The performance data and the fingering drawing data can be stored in the ROM in the personal computer 1, can be provided externally via the MIDI interface 2, or by a medium such as an FD.
[0021]
FIG. 2 is a diagram schematically illustrating a handprint. The handprint includes position data of roots b to f of five fingers, position data of two wrist bases (thumb side, little finger side) g, h, By giving the position data of the tips i to m of the fingers, drawing can be performed. In order to determine the position of each part of the bill with respect to the key, data representing the positional relationship between the position data and the key may be provided. Note that a is the center of the back of the hand.
[0022]
Since storing a large amount of the position data in advance requires a large amount of storage capacity, time, and labor, the present invention first makes it possible to draw a handprint without providing all of the position data. For this purpose, default data that can draw a bill is prepared.
[0023]
FIG. 3 is an example of default data. Here, the key width direction is defined as the x axis, the right direction is defined as +, the left direction is defined as −, the key depth direction is defined as the y axis, the upward direction is defined as −, and the downward direction is defined as +. In the default data, the back-of-hand position data consisting of a total of seven points, ie, five finger bases b to f and two wrist bases (thumb side and little finger side) g and h, are for drawing the shape of the back of the hand And these data are represented as relative positions from the center a of the hand.
[0024]
The finger position data is for drawing the tips of the five fingers i to m. These data are obtained when the hand is at the default angle, that is, when the center of the hand and the position of the middle finger k are set. Are represented as relative positions from the base of each finger when the straight line connecting is parallel to the key depth direction.
[0025]
The numerical value in each data is normalized with respect to the key width and the key depth, and the numerical value shown is multiplied by the key width or the key depth to obtain the key size and the size of the key on the display screen. The drawing data of the handprint of the matching size is generated.
[0026]
Although FIGS. 2 and 3 show examples of the right hand, the same applies to the left hand. In the following description, the right hand will be described as an example. Further, each finger may be drawn in a straight line from the base b to f of each finger to the tip i to m of each finger as, for example, 2/3 of the key width.
[0027]
FIG. 4 is an example of drawing data stored together with performance data. Here, the center a of the hand and the drawing data of one finger to be pressed are stored. The "time" in the figure is the time in the music performance. The drawing data is read out in synchronization with the performance data (sound data) in accordance with the time, and the drawing data of the bill is read out based on the read out drawing data. Generate and display fingering.
[0028]
“Data” in the drawing data is the type of data, and the center of the back of the hand (hereinafter simply referred to as “center of the hand”) / the tip of the thumb / the index finger / the middle finger / the third finger / the little finger (hereinafter the “tip”) Omitted.)
[0029]
The “key number” is the note number of the key at which the center a of the hand or the fingers i to m is located. The “horizontal position” is a width parameter indicating a horizontal position of the key, for example, one of the key center / right end of the key. The “depth position” is a depth parameter indicating the vertical position of the key, and is, for example, a position from the top of the key when 1/28 of the length of the white key is set to 1. These “key number”, “lateral position”, and “depth position” are part of position data of the bill, and the position of the bill on the key is determined by these.
[0030]
The “height position” is a height parameter indicating the height position of the key, for example, a position touching the key / a position slightly floating from the key / a position floating midway / a position floating high And so on. The “key depression flag” is turned on when the key is depressed.
[0031]
In FIG. 4, for example, in the drawing data at time “0”, the center “a” of the hand is positioned at the center in the horizontal direction of the key with the key number “69” and at the position 41 from the top of the key (the length of the white key is 1). At this time, the finger is drawn at the position 41/28 from the top of the key), and the little finger m is positioned at the center in the horizontal direction of the key with the key number “72” and at the position 25 from the top of the key (the length of the white key is 1). At 25/28 from the top of the key).
[0032]
Next, an embodiment of the fingering display method according to the present invention will be described with reference to the flowcharts of FIGS. In the present embodiment, the default of FIG. 3 is prepared, and the drawing data of only the index finger j “data: index finger, key number (key number): 67, width parameter: key center, depth parameter: 23, height parameter: touch key” This is an example of a case in which the position where the key is pressed and the key press flag: ON are read out and given.
[0033]
First, in step S51, the stored drawing data is obtained. What is acquired here is the drawing data of only the index finger j, and there is no drawing data of the center a of the hand. Therefore, in step S52, the coordinate value of the center a of the hand on the display screen is obtained. Here, the coordinate value (342, 105) of the center a of the hand is obtained. Details of how to obtain the coordinate values will be described later. In the present embodiment, since the height parameter and the key depression flag are not used for displaying fingering, it is not necessary to read them.
[0034]
Next, in step S53, the angle of the hand is obtained. When the position of the center a of the hand and the position of the middle finger k are given, the angle of the hand can be obtained as the inclination of a straight line connecting them. Here, the position data of the center a of the hand and the position of the middle finger k are given. The default hand angle is not used. This default is an angle at which a straight line connecting the center a of the hand and the position of the middle finger k is parallel to the keyboard depth direction, that is, 90 degrees.
[0035]
Next, in step S54, the coordinate value of the center a of the hand obtained in step S52 using the angle of the hand, the position of the back of the default hand (the position of the base of the finger and the base of the wrist), the key width and the key depth length The coordinate value of the position of the back of the hand (base position) is obtained from
[0036]
Thus, the coordinate value of the base position of the thumb (318, 105), the coordinate value of the base position of the index finger (330, 86), the coordinate value of the base position of the middle finger (342, 87), and the coordinate value of the base position of the ring finger (354) , 89), the coordinate value of the base position of the little finger (366, 90), the coordinate value of the base position of the wrist of the little finger (360, 119), and the coordinate value of the base position of the thumb side of the wrist (324, 119) are obtained. Here, a keyboard size having a key width of 12 and a key depth of 73 is assumed, and fractions below the decimal point are rounded down.
[0037]
For example, in the default data, the base m of the little finger is displaced rightward (key width × 2 = 24) with respect to the center a of the hand and displaced downward (key depth × 0.21 ≒ 15). Therefore, the x-direction coordinate value of the base m of the little finger on the display screen is 342 + 24 = 366, and the y-direction coordinate value is 105−15 = 90.
[0038]
If the angle of the hand is not the default, the calculated coordinate values of the bases b to f of the fingers may be rotated by the angle of the hand around the center a of the hand.
[0039]
Next, in step S55, the coordinate values of the finger for which the drawing data is not given in advance are used using the hand angle, the default data of each finger, and the coordinate values of the bases b to f of each finger obtained in step S54. Generate.
[0040]
Here, since the drawing data of the index finger j has been acquired in step S51, coordinate values of the thumb i, the middle finger k, the ring finger l, and the little finger m are generated. As a result, the coordinate values of the thumb i (318, 81), the coordinate values of the middle finger k (342, 49), the coordinate values of the ring finger l (354, 52), and the coordinate values of the little finger m (366, 60) are generated.
[0041]
The coordinate value of the index finger j may also be obtained here, but this is the same as the coordinate value (330, 59) obtained when obtaining the coordinate value of the center a of the hand on the display screen described later.
If the angle of the hand is not the default, rotating these coordinate values by the angle of the hand around the center a of the hand is the same as the back of the hand.
[0042]
A handprint is drawn according to the coordinate values of the backs b to h of the hand and the coordinate values of the fingers i to m obtained as described above. In this case, drawing can be performed with the thickness of each finger set to ／ of the key width. FIG. 7 is an example of a handprint drawn on the keyboard as described above.
[0043]
FIG. 8 is a flowchart showing the details of the process of step S52 in FIG. 5, that is, the process of obtaining the coordinate value of the center a of the hand from the given drawing data. First, in step S81, the drawing data “Data: index finger, key number: 67, width parameter: key center, depth parameter: 23, height parameter: position touching the key, key pressing, “Flag: ON” is acquired, and the position of the index finger j is converted into a coordinate value on the display screen.
[0044]
Here, the rectangular coordinate value of the key number 67 on the display screen is (324, 0, 336, 73), and it is assumed that the keyboard has a key width of 12 and a key depth of 73. It is as follows.
[0045]
FIG. 9 is a flowchart illustrating a process of converting drawing data into coordinate values. First, in step S91, the drawing data “data: index finger, key number: 67, width parameter: key center, depth parameter: 23, height parameter: position touching the key, key pressing, Flag: ON "is obtained. Since the height parameter and the key depression flag are not used in this conversion process, they need not be read out.
[0046]
Next, in step S92, a key rectangle coordinate value on the display screen of the key number “67” where the index finger j is located is obtained. Here, the key rectangle coordinate values of the key number “67” on the display screen are (324, 0, 336, 73), that is, 324 to 336 in the x-axis direction and 73 to 0 in the y-axis direction. And The coordinate value in the y-axis direction is 0 at the upper part of the key and 73 at the lower part of the key.
[0047]
Next, in step S93, the x-axis direction coordinate value of the index finger j is obtained. Here, since the width parameter is “key center”, the x-axis direction coordinate value of the index finger j is (324 + 3364) / 2 (= 330).
[0048]
Subsequently, in step S94, the y-axis direction coordinate value of the index finger j is obtained. Here, since the depth parameter is “23”, the y-axis direction coordinate value of the forefinger j is set at 1/2 scale of the vertical length of the key rectangle as one scale, at the position of 23 scales from the upper side of the key rectangle, ie, (73) / 28) × 23 (= 59).
[0049]
Returning to FIG. 8, using the coordinate values (330, 59) of the index finger j obtained in step S81 and default data, in step S82, the coordinate value of the base c of the index finger is obtained.
[0050]
In the default data, the coordinate value of the index finger j is displaced by (0, key depth × 0.477 × 0.8) with respect to the coordinate value of the base c of the index finger. The coordinate value (330, 86) of the base c can be obtained. The coefficient 0.8 is multiplied by taking into account the bending of the finger at the time of key depression. In this case, since the key depression flag of the index finger is on, the coefficient 0.8 is multiplied. Of course, this coefficient is 1 unless the key depression flag of the index finger is turned on.
[0051]
Next, in step S83, using the default data, the key width and the key depth, the coordinate value of the center a of the hand is obtained from the coordinate value c of the base of the index finger obtained in step S82.
[0052]
The present invention is not limited to the embodiments described above, and various modifications are possible.
For example, using the height parameter stored together with the position data of the finger to change the display color of the keyboard for the finger or the finger, or to display the mark, the guide in the height direction is also possible. It is. In particular, if a finger whose key depression flag is on is displayed differently from other fingers, it becomes an effective guide in fingering practice.
[0053]
Further, in the practice of fingering, since the position of the finger to be pressed is particularly important, it is desirable to previously store drawing data for the finger whose key-depression flag is ON, and the position and arrangement of the entire finger is particularly important. In a performance portion that causes a problem, it is possible to store in advance all drawing data that can draw a handprint and display fingering based on the drawing data.
[0054]
Further, when a plurality of drawing data are stored in advance, any of the data, for example, data derived by preferentially using drawing data of a finger with a key depression flag on or drawing data of a hand center. Can be used to draw a handprint. In that case, it is optional whether or not the other given drawing data is valid and used for drawing.
[0055]
Furthermore, the present invention can also be realized as a program for displaying fingering. By installing this program on a personal computer, it is possible to easily practice fingering.
[0056]
In accordance with the flow charts shown in FIGS. 5 and 6, the program reads a pre-stored finger position data in the computer, the finger position data, the coordinate value of the key where the finger is located, and the The procedure for obtaining the coordinate value of the center of the back of the hand using default data, the procedure for obtaining the coordinate value of the center of the hand back and the coordinate value of the position of each part of the back of the hand using default data of the bill, the coordinates of the position of each part of the back of the hand The procedure of obtaining the coordinate value of the position of each finger using the default value of the value and the bill, and the procedure of displaying the fingering using the coordinate value of the position of each part of the back of the hand and the coordinate value of the position of each finger are sequentially executed. It is based on that.
[0057]
【The invention's effect】
As described above, according to the present invention, fingering can be displayed by giving position data of a part of a bill, so that drawing data is reduced and its storage capacity and labor required for inputting it are reduced. Since the drawing data and default data are normalized with respect to the key width and key depth, changes in the keyboard size and the size of the keyboard on the screen can be easily handled. , Fingering that feels natural can be displayed.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an example of a fingering practice system to which the present invention can be applied.
FIG. 2 is a schematic diagram showing position data for drawing a handprint.
FIG. 3 is an explanatory diagram showing an example of default data.
FIG. 4 is an explanatory diagram showing an example of drawing data stored in advance.
FIG. 5 is a flowchart of a process according to the embodiment of the present invention.
FIG. 6 is a follow chart continued from FIG. 5;
FIG. 7 is an explanatory diagram showing an example of fingering display on a screen.
FIG. 8 is a flowchart of a process for obtaining a coordinate value of the center of a hand from drawing data.
FIG. 9 is a flowchart of a process for converting drawing data into coordinate values.
[Explanation of symbols]
1 PC, 2 MIDI interface, 3 MIDI device, 4 keyboard

Claims (6)

In a fingering display method of drawing a handprint based on position data of each part of a handprint on a keyboard and performing fingering display,
Default data that can draw a bill is prepared, and if the storage location data stored in advance is insufficient to draw the bill, the keyboard is used by using the storage location data and the default data. A fingering display method comprising: deriving position data of each part of a handprint with respect to a hand, and drawing a handprint using the derived position data of each part. The position data of each part of the bill includes the position data of the base of the finger from the center of the back of the hand and the position of the base of the wrist on the thumb side and the little finger side, and the position data of the tip of the finger from the base of the finger. The fingering display method according to claim 1. 2. The method according to claim 1, wherein the storage position data is only position data of a tip of a finger to be pressed, and position data of other parts of the bill are derived using the position data and the default data. 2. The fingering display method according to 2. The storage position data and the default data are normalized with respect to the key width and the key depth, and the data is multiplied by the key width and the key depth to derive the position data for the keyboard. The fingering display method according to any one of claims 1 to 3, wherein A height parameter indicating a height position with respect to a key is added to the storage position data, and the display of the key or the finger is changed or an additional display is performed according to the height parameter. 5. The fingering display method according to any one of 1 to 4. Computer, a procedure for reading the pre-stored finger position data, a procedure for obtaining the coordinate value of the center of the back of the hand using default data of the key position data and the coordinate value of the key where the finger is located, The procedure of obtaining the coordinate values of the respective parts of the back of the hand using the coordinates of the center of the back of the hand and the default data of the handprint, the coordinates of the coordinates of the respective parts of the back of the hand and the coordinates of the position of each finger using the default data of the handprint A program for executing a procedure for obtaining a value and a procedure for displaying fingering using the coordinate values of the positions of the respective parts of the back of the hand and the coordinate values of the positions of the fingers.

Images