Chord symbol display system, chord symbol display program and sound output system

Abstract

To provide a chord symbol display system, chord symbol display program, and sound output system that displays chord symbols, enabling visual recognition of chord images and expression of chords using microtones.SOLUTION: On a display unit 13 displaying an input operation screen of a chord symbol control system, chord symbols representing chords are displayed in chord symbol display sections 41 to 43 by using interval display (horizontal lines) to express intervals of the fundamental note specified by interval specification sections 21 and 22 and intervals of notes other than the fundamental note. The chord symbols are configured such that a contrasting display (vertical line), set to differ in height, length and appearance, is positioned between the interval display corresponding to the fundamental note and the interval display corresponding to the other notes. Two or more note displays are arranged at spaced-apart height positions according to pre-set rules, enabling a frequency ratio between the fundamental note and the other note to be identified by confirming type and number of contrasting displays.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention provides a chord recorder that displays chord symbols that allow the user to visually recognize the image of a chord. A chord symbol display system and chord symbol display program, and chords using these chord symbols can be output. This invention relates to a sound output system. [Background technology]

[0002] Traditionally, musical scores have often been displayed using staff notation, and chords have also been displayed using It is common to use staff notation. In addition to staff notation, there are also other notations based on the position of points on the circumference. There are methods for expressing pitch (frequency) (see, for example, Patent Document 1), and methods for expressing pitch (frequency) arranged in a fan or circle. Methods of expressing chords and scales using numbers etc. have also been proposed (see, for example, Patent Document 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 3746887 [Patent Document 2] Japanese Patent Application Laid-Open No. 2010-217851 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when using musical notation, the pitches that can be expressed are limited, and the range is narrower than a semitone. It is difficult to express the small sounds (microtones). , Arabic music, Indonesian music), or digital sound, etc. There was a problem that it was difficult to express music using sounds that could not be expressed using frequencies. Although it is possible to express microtones using the frequency, the frequency is There are similar problems with identifying the image and how to express different chords. There could be room for improvement.

[0005] The present invention has been made in view of the above circumstances, and aims to provide a method for visually recognizing the image of a chord. A chord symbol table that displays chord symbols that can express chords using microtones. The present invention aims to provide a chord symbol display system, a chord symbol display program, and a sound output system. [Means for solving the problem]

[0006] In order to solve the above problem, the chord symbol display system according to claim 1 is A chord symbol display system that can be controlled to display possible chord symbols, a frequency specifying means for specifying the frequencies of a plurality of sounds; When one of the multiple sounds that make up the sound is set as a fundamental sound, the pitch of the fundamental sound; The pitch of a sound other than the fundamental sound is changed to a different position in the height direction corresponding to the high or low pitch of the sound. a display means for displaying chord symbols that represent chords using interval indications expressed by the above formula, The chord symbols are of two types, which are set to have different lengths and shapes in the height direction. At least one of the contrasting expressions in the above classes is a pitch expression corresponding to the fundamental note and another pitch expression corresponding to the fundamental note. By interposing between the note and the corresponding interval indication, two or more notes can be played according to preset rules. The pitch indications on the upper and lower parts are arranged at a distance from each other, and the type and number of the comparison indications are By checking the ratio of the frequency of the fundamental sound to the frequency of the other sound, it is possible to determine the ratio of the frequency of the fundamental sound to the frequency of the other sound. It is characterized by being composed of

[0007] The chord symbol display system according to claim 2 is a chord symbol display system according to claim 1. The comparative display corresponds to a first reference number that is an integer or prime number equal to or greater than 3. a first comparative display set using the first reference length and an integer greater than the first reference number; a second reference number that is an integer or prime number different from an integer multiple of the first reference number; and a second comparison display set using a second reference length corresponding to the reference number. It is structured as follows.

[0008] The chord symbol display system according to claim 3 is a chord symbol display system according to claim 1 or 2. The display means displays the candidates for the combination of the type and number of the comparative display in a manner that composes chords. A candidate display section is configured to be able to display multiple types of candidate sounds based on the frequencies of multiple sounds that are generated. are.

[0009] The chord symbol display program according to claim 4 is a chord symbol display system according to claim 1. A chord symbol display program usable in The combination of the type and number of contrast marks used to express the pitch position of the chord is The display is configured to be able to display based on the frequencies of multiple sounds that are generated.

[0010] The sound output system according to claim 5 is a sound output system capable of outputting chords that combine a plurality of sounds. A system in which one of the multiple notes that make up a chord is used as the fundamental note. a fundamental frequency acquisition means for acquiring the frequency of the fundamental tone; The pitch of a different note is expressed by changing the position in the vertical direction corresponding to the high or low pitch. Two or more types of pitch indications set with different lengths or intervals in the height direction The type and number of contrasting symbols in chord symbols that can be expressed using the contrasting symbols can be acquired. and a comparative display acquisition means, wherein at least one of the comparative displays of the chord symbol is Interposed between the pitch indication corresponding to the fundamental note and the pitch indication corresponding to the other note. This allows two or more pitch indications to be spaced apart in height according to a preset rule. The fundamental frequency of the fundamental frequency acquisition means is acquired by the fundamental frequency acquisition means. The frequency is identified based on the type and number of the comparative display acquired by the display acquisition means. The present invention is characterized by being configured to be capable of outputting chords using other sounds. [Effects of the Invention]

[0011] According to the chord symbol display system and chord symbol display program of the present invention, There are two or more types of chord symbols that are set to have different lengths and shapes in the vertical direction. Contrastive expressions are used, and which of these contrastive expressions is interposed between the interval expressions? By checking the frequency ratio of the fundamental note to another note, you can identify the chord symbol and Therefore, chords with the same frequency ratio between the fundamental note and another note can be expressed as are expressed by common chord symbols using contrastive notations that are common in type and number, It is possible to make it easier to use chord symbols that are easy to visually recognize the image of the sound. Since chords are expressed by the ratio of A system and program can be provided that is capable of displaying symbols.

[0012] Furthermore, according to the sound output system of the present invention, the comparative display acquisition means acquires the chord symbols. The type and number of contrast displays can be obtained, and the type and number of contrast displays can be obtained for the basic sound. To provide a system capable of outputting a chord that combines other sounds whose frequencies are specified based on the It is possible. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a block diagram showing a chord symbol control system of the present invention. [Figure 2] FIG. 10 is a diagram illustrating an example of an input operation screen. [Figure 3] (A) is a diagram showing the relationship between frequency ratios and dimension symbols, and (B) is a diagram showing the relationship between prime harmonics, dimensions, dimension symbols, and dimension diagrams. [Figure 4] A diagram illustrating a double division display and chord symbols. [Figure 5] FIG. 10 is a diagram illustrating double-divided data. [Figure 6] A chord progression used in Pachelbel's Canon, expressed using chord symbols DETAILED DESCRIPTION OF THE INVENTION

[0014] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0015] FIG. 1 is a block diagram showing a chord symbol control system 10 of the present invention. Stem 10 is a chord recorder that can identify the frequency ratio (pitch difference) between a fundamental note and another note. The chord symbol control system 10 is a system capable of controlling the display of chord symbols. The system can also control the output of chords based on the type and number of contrasting symbols used in the signal. In the following, we will show how to display chord symbols using four different dimensional diagrams as comparative displays. The following explanation will be given mainly by way of example.

[0016] The chord symbol control system 10 includes a control unit 11 that executes various processes (controls) and a chord creation unit. an input unit 12 capable of inputting usage information and input operation information; a display unit 13 capable of displaying chord symbols; The system can be configured as a system including an output unit 14 capable of outputting chords.

[0017] The input unit 12 is provided with a keyboard for specifying the frequencies of the multiple notes that make up the chord required for displaying the chord symbol. For example, the input unit 12 receives information for creating chords. A sound collection device (such as a microphone) for identifying frequencies, and a music score reader for reading music scores (e.g., cameras), electronic musical instruments, and acoustic data readers using USB memory (e.g., It can be configured using input ports for connecting USB memory, etc. The input unit 12 is an operation detection device (for example, a keyboard) for manually inputting chords. mouse), and other input devices (e.g., smartphones, tablets, etc.). and configured to be able to input input operation information corresponding to the input operation for identifying the frequency. It is possible.

[0018] The control unit 11 includes a control device (arithmetic device) and a storage device for storing various data and control programs. The control unit 11 can be configured to specify the frequency of each note that constitutes a chord. The chord symbols are displayed on the display unit 13 by inputting information required for the chord symbols from the input unit 12. The control unit 11 also controls the chord symbols corresponding to the chord symbols displayed on the display unit 13. Control is executed to output sound from the output unit 14.

[0019] The control unit 11 can be configured using one computer, or can be configured as an information server. It is also possible to configure a system using multiple computers as a combination of clients. For example, a personal computer (PC) of a client such as a composer can be connected to the Internet. The information server is connected to the computer via a line, and the information is input from various devices as an input unit 12 owned by the composer. The information server generates a display image of the chord symbol based on the information about the chords received, and the image is sent to the client. The display unit 13 of the PC can be displayed so that the composer can check it.

[0020] Next, the specific structure of the chord symbol will be explained. The chord symbol is a symbol that represents multiple notes that make up a chord. Sound frequencies can be identified and displayed (generated), and multiple sound frequencies can be displayed, e.g. The interval (pitch) of each note can be manually specified by input operation. The signal control system 10 is configured to operate an input operation screen to specify a plurality of notes that constitute a chord. This is a system that can display chord symbols. Please refer to Figure 2 onwards to see examples of chord symbols. This article explains:

[0021] FIG. 2 is a diagram illustrating an example of an input operation screen displayed on the display unit 13 for displaying chord symbols. The input operation screen is a screen display displayed on the display unit 13 under the control of the control unit 11. Since general control can be used for display control, the explanation will be omitted. A characteristic configuration for displaying symbols will be described.

[0022] The input operation screen has pitch specification sections 21 and 22, a frequency ratio display section 23, and an equal temperament display section 24. , 25, a keyboard display section 26, a note value display section 27, a multiplication type display section 31, 32, and a chord recorder. The input operation screen can be configured to include the number display units 41 to 43. Not only the display unit for specifying the pitch by the sound, but also the sound collection device, the music score reader, the sound data reader It can also be configured to include an operation unit for inputting pitches using the An example of manual input operation will be described below.

[0023] The pitch specifying units 21 and 22 are configured to narrow down the frequency band within a certain range including the frequency of the pitch to be specified. The upper pitch specification section 2 is configured so that the pitch can be specified in detail after inputting the key. When you click on the area surrounded by 1, a certain range will be shaded and the pitch below will appear. The pitch specification unit 22 is configured to allow detailed pitch specification. There are other ways to specify intervals, including manually entering them numerically. It may be configured as follows.

[0024] Click the lower pitch specification section 22 with the mouse, and while holding down the button, move the mouse left and right. By moving the mouse, you can select (adjust) the pitch in fine increments. The sound will continue to be output at the pitch corresponding to the position you clicked on the mouse, and you can move the mouse to change the pitch. The pitch changes as the sound changes, and the position of the pitch is represented by a black circle.

[0025] The first note you specify is set as the fundamental note (root note). The fundamental note is set as the lowest interval. This example will explain the case, but you can also set a note other than the lowest pitch. The designated sound does not have to be the basic sound, and the operator can specify which sound will be the basic sound. It can also be configured.

[0026] The frequency ratio display section 23, the equal temperament display sections 24 and 25, and the keyboard display section 26 display the designated pitch. A black circle is displayed at the position corresponding to the frequency ratio. The ratio of the frequency of the original sound to the frequency of another sound (frequency ratio) is the number on the left and the number on the right. The frequency ratio is displayed as a ratio to the frequency of the signal. An integer is used for the frequency ratio.

[0027] For example, if a black circle is displayed near the part that says "2:3," A frequency of approximately 1.5 times the frequency of the sound is specified, which corresponds to a frequency ratio of "3 ÷ 2" The frequency values ​​that represent the pitch are displayed logarithmically in the horizontal direction. It is expressed as:

[0028] The frequency ratio display section 23 and the equal temperament display sections 24 and 25 have points corresponding to representative frequencies. If you click near the dotted circle, you can You can accurately specify notes with a numerical ratio of "2:3" (such as "Re" or "F"). You can also specify the note accurately by clicking the position of the note you want to specify in the display 26. can be done.

[0029] The sound numerical value display section 27 displays the frequency ratio between the designated fundamental sound and another sound as a numerical value. For example, three specified notes are displayed in order from lowest to highest. By clicking on the part, you can enter the frequency of each sound numerically. For two notes other than the fundamental note, the difference in pitch from the fundamental note is the number of semitones. The semitone number and cent value are displayed using the It can be configured to be inputtable.

[0030] The multiplication formula display units 31 and 32 display a plurality of types of multiplication formula candidates for displaying chord symbols. This is a possible display unit. Below, please refer to Figures 3 and 4, including the relationship between the double formula and chord symbols. FIG. 3(A) is a diagram showing the relationship between the frequency ratio and the dimension code, and FIG. 3(B) is a diagram showing the relationship between the frequency ratio and the dimension code. is a diagram showing the relationship between prime harmonics, dimensions, dimension symbols and dimension diagrams.

[0031] Prime harmonics represent the sounds that occur when the frequency of the fundamental tone is multiplied by a prime number. A prime harmonic is a sound that is produced when the frequency of the fundamental tone is doubled, and represents the same tone one octave higher. The prime harmonic corresponding to the prime number "3" is the sound that occurs when the frequency of the fundamental tone is tripled. Therefore, if the fundamental note is "do", it will represent a note close to "so".

[0032] The prime harmonic corresponding to the prime number "3" is the octave equivalent, as shown in Figure 3(A). Within the range of "1:1" to "1:2", express the sound as equivalent to "2:3" The length corresponding to a prime number (prime harmonic) within the range of one octave can be expressed as a chord symbol. By using this reference length, multiple types of The image of the sound corresponding to the frequency ratio expressed by integer multiples of a prime number (integer) of the same kind is expressed as a chord symbol. It can be more expressive.

[0033] The reference lengths are different for the prime harmonics "3", "5", "7" and "11" The length of each prime harmonic is set. The reference length for each prime harmonic is the prime number used as the prime harmonic. For example, the reference length can be calculated by using the following formula: In this case, it can be calculated by "log2R x 12", and in this case, each prime harmonic The corresponding frequency ratio R and reference length are "3 / 2" for the prime harmonic "3" and "approximately 7.02", The prime harmonic "5" is "5 / 4" which is "approximately 3.86", and the prime harmonic "7" is "7 / 4" which is "approximately 9. 69", and the prime harmonic "11" is "11 / 8", which is "approximately 5.51".

[0034] The reference length is used to express chord symbols using the length ratio set for each prime harmonic. Therefore, it is not necessary to multiply by 12 to calculate the reference length, but by multiplying by 12, The reference length can be set as a ratio of the length when the octave is 12. Therefore, the length equivalent to the number of semitones in the 12-tone equal temperament scale is set as 1, and the reference length is expressed as 1. This is preferable because the image of the chord can be expressed from the numerical value of the reference length.

[0035] As shown in Figure 3(A), any note within an octave (e.g., a scale) can be approximated by integer ratios using prime numbers greater than or equal to 3 as prime harmonics. Also, if a note outside the range of one octave is specified for the fundamental note, it will be To fit within the range of the octave, notes one octave lower (sounds with half the frequency) or By using a higher note (a note with twice the frequency), it is possible to express it within the range of one octave. This allows you to create chords that combine notes within a range of one octave using chord symbols. When expressing it in this way, combinations of prime numbers can be used.

[0036] Prime harmonics are based on the numbers "2", "3", "5", "7", and "11". Then, in order of decreasing prime numbers, we name them dimension 1, dimension 2, dimension 3, dimension 4, and dimension 5. In addition, "1", which is not a prime number, is also included as one of the base numbers. In this case, the fundamental note itself, "1", can be expressed using prime harmonics and dimensional symbols. It is preferable that the prime harmonics of dimension 6 or more are included in the base number. It is not necessary to set the base numbers in ascending order of prime numbers, and It is also possible to use integers other than numbers as base numbers, but the base numbers are ordered in order from smallest prime number to largest prime number. By setting the base number only within the range of dimension 5, the chord symbol can be It is preferable because it makes it easier to visually recognize the image of the chord without making it overly complicated. It's nice.

[0037] As shown in FIG. 3(A), the frequency ratio display section 23 displays the frequency ratio expressed using numbers. In addition, multiplication formulas are displayed using figures (dimensional symbols) that resemble diamonds and cubes. The doubling formula is expressed by a combination of dimension symbols that are set in advance to correspond to the frequency ratio. Each dimension symbol is accompanied by an up or down arrow.

[0038] Here, chord symbols are combinations of a fundamental note and another note with a frequency ratio expressed in a doubling formula. It is a symbol that expresses the chord visually so that it is easy to imagine, and the doubling formula is determined (selected). Therefore, first, we will use the dimension code Explain the rules for expressing frequency ratios using doubling formulas, and then explain their relationship with chord symbols. Explain.

[0039] Dimensional symbols are symbols that express the image of sound expressed using prime harmonics. , the sign is set corresponding to the prime number used to express the frequency ratio, so that the complex The ratio of integers combining several prime numbers is not only expressed numerically as a frequency ratio, but also as a code It can also be expressed by an image using

[0040] Four types from dimension 2 to dimension 5 (prime harmonics "3", "5", "7" and "11" For each dimension, a dimension symbol and a dimension diagram are set up to correspond to each dimension. The reason why there is no dimension diagram for the sound represented by the reference length corresponding to dimension 1 is that This is because the settings correspond to the same sound with a different pitch by an octave. When expressing chords within the range of a block, the dimension diagram corresponding to dimension 1 is not used. This can be done.

[0041] It is preferable that the dimension symbol is configured so that the height of the dimension can be easily understood visually. In terms of form, dimension 2 is a flat figure, dimension 3 is a solid figure, and dimension 4 is a solid figure. A figure that represents movement in one direction, and dimension 5 represents movement in two directions for a solid figure. This example illustrates the use of a figure that represents the above.

[0042] The dimension diagram is made by dividing the vertical length into the ratio of the reference lengths set for each dimension. This is a display (contrast display) consisting of vertical lines a to d set differently. The height of the harmonics is determined by the reference length set for each prime harmonic as described above. The dimension diagram is used to represent the intervals of chords in chord symbols. It is positioned between the horizontal lines that indicate the intervals, and this length The ratio of sound frequencies is expressed.

[0043] It is preferable that the dimension diagram be set in a different manner for each dimension, and different line types and thicknesses are used. The difference in the appearance for each dimension is the line type and thickness. You can also use different colors for the same line type and thickness (for example, a solid line). It is preferable to express the dimension diagram by using different colors for each dimension. Since chord symbols are expressed using colors, the types of colors used and the vertical arrangement of each color are important. The length of the lines also makes it easier to recognize the image of the chord. Note that dimension 2 is red. It is preferable to use green for dimension 3, purple for dimension 4, and yellow for dimension 5 to create an image of a chord. It is preferable that the page can be easily recognized, and the dimension symbols are the same color as the dimension diagram. It is preferable to use controls that display dimensions, as this makes it easier to understand the dimension symbols.

[0044] As shown in Figure 3(A), when the frequency ratio is "27:28", the doubling formula is A figure with three downward arrows in a dimension 2 symbol and one upward arrow in a dimension 4 symbol The doubling formula is determined by factorizing the first and second terms of the frequency ratio. It is possible.

[0045] If the previous term is "27", then "27" is equivalent to the cube of "3", and the number "3" has dimension 2. In this case, the dimension code of dimension 2 is used, and the previous term is The arrows will be added to the part of the multiplication formula, including three downward arrows that are the same as the multiplier value. The shape is constructed.

[0046] If the latter part is "28", then "28" is the square of "2" multiplied by "7". Here, the number "2" corresponds to a prime number of dimension 1, and even if the frequency is doubled, it is still halved. However, the note names (pitch classes) of the notes that make up the chord do not change. Even if the prime number "2" is included as a prime factor when solving, "2" cannot be used in the doubling formula. Therefore, the latter part is expressed as "2 In the case of "8", the doubling formula is expressed using "7" excluding the elements related to "2", and the numerical value " Since "7" corresponds to a prime number of dimension 4, the dimension symbol of dimension 4 is used. A part of the doubling formula, including one upward arrow corresponding to the multiplier, is marked with a direction arrow. The shape is constructed.

[0047] Once the figures of the double expressions of the previous and following terms have been determined, the dimension symbols are displayed in order of decreasing dimension. This allows you to display the double expression "27:28", and similarly "15:16". Frequency ratio display for other multiples such as "11:12", "8:9", and "7:8". The frequency ratio can be displayed on the frequency ratio display unit 23. The dimensions (e.g., dimension symbols, arrows, and borders) are displayed differently depending on the dimension. For example, it is preferable to display the line types and lines corresponding to each dimension in the dimension diagram. It is preferable to display the multiplication formula using thickness, color, etc. Also, it is possible to combine multiple dimensions In the case of a multiplication formula, the form may be different for each dimension, but the highest dimension (hereinafter referred to as the limiting dimension) ") to display the double division formula using the form (for example, line type, line thickness, color, etc.) This is also preferable, as it allows you to easily recognize the image of a chord even when the doubled form is displayed in a small figure. It can be made easier to recognize.

[0048] Next, the display contents of the multiplication type display units 31 and 32 will be described mainly with reference to FIG. 4(A) and 4(B) are diagrams illustrating the double division display units 31 and 32 and chord symbols, some of which are The chord symbols corresponding to the doubling formula are also shown.

[0049] As shown in FIGS. 4(A) and 4(B), the tolerance is input to the multiplication type display units 31 and 32. A section that displays multiplication data corresponding to multiple frequency ratios, including a section that inputs tolerances. The tolerance input section is expressed as the input frequency and the frequency ratio. This is the part where you can set the degree of tolerance (degree) of deviation from the frequency you have set. The tolerance is expressed as a unit of width (length) obtained by dividing a semitone into integers, based on the semitone in equal temperament. Figure 4 shows an example where "1 / 3 semitone" is set. The control unit 11 determines whether a frequency ratio that falls within a range set as a tolerance is set. By extracting the double division data, candidates for multiple types of double division data are displayed on the display unit 13. It is possible.

[0050] The difference between the pitch expressed by the doubled data and the input pitch is 60 semitones. The pitch difference can be expressed as a ratio of the numerical value in the case of the pitch difference. Not only the deviation between the frequency expressed as a frequency ratio and the input frequency, but also the direction of the deviation It can also express direction (high and low).

[0051] The extracted multiple types of multiplication data are sorted in order of decreasing complexity as shown in Figure 4(A). The complexity can be calculated based on the dimensional code expressed in a multiplication formula. It is a number that can be expressed numerically and is used to express the complexity of a doubling expression.

[0052] Specifically, the complexity is calculated by extracting the dimension value from the dimension code used in the doubling formula, and The values ​​obtained by squaring the values ​​of are cumulatively added, and if a downward arrow is included, You can use the value obtained by adding the number of downward arrows. For example, The doubling formula in the top row (frequency ratio 5:6) shown in A) has a dimension symbol of dimension 2 and one upward arrow. The combined figure is a figure that combines a dimension 3 dimensional symbol and one downward arrow, The square of "2" and the square of "3" are cumulatively added, and then "1" is added, which corresponds to the downward arrow. By adding these, we get a complexity value of "14".

[0053] This makes it possible to use multiple dimension symbols with large dimension values ​​or with many arrows. The degree of complexity becomes large, and the image of the chord becomes easy to recognize, while the image of the chord becomes difficult to recognize. This can be an element that makes it easier to distinguish between the two.

[0054] Figures 4(A) and 4(B) show some examples of chord symbols corresponding to each doubling formula. The musical notation is a horizontal line that indicates the interval corresponding to the fundamental note, and a triangle mark is placed on the horizontal line that indicates the interval corresponding to the fundamental note. Between the horizontal line representing the process, one of the vertical lines a to d, which has a reference length set as a dimension diagram, is For example, if the frequency ratio is "5:6", , a vertical line a corresponding to dimension 2 is interposed above the fundamental note, and a virtual height is placed at the top of the vertical line a. A dotted line is displayed to indicate the position. Furthermore, a dimension is displayed downward from the dotted line of the temporary height position. There is a vertical line b corresponding to 3, and a horizontal line (solid line) at the bottom of the vertical line b to indicate the pitch of another note. is displayed.

[0055] Here, Figure 2 shows an example in which two notes are specified as alternative notes to the fundamental note. For two sounds, multiple candidates are displayed on the multiplication display units 31 and 32. Among these, the double division data including the frequency ratio selected by the operator is in a special state (shaded The two chord symbols corresponding to the selected doubled data are displayed as the upper two sum symbols. The chord symbols are displayed in the note symbol display areas 41 and 42. The two chord symbols can be combined and displayed by overlapping them based on the fundamental note. 10 shows an example in which a chord symbol including three intervals is displayed on the chord symbol display unit 43. do.

[0056] Next, an example of a configuration for extracting double-valued data will be described with reference to FIG. 1 is a diagram illustrating an example of multiplication data stored in the control unit 11. The multiplication data includes frequency ratios. A large number of multiplication data set between "1:1" and "1:2" can be stored in advance. This allows you to select the frequency ratio of the input fundamental sound and another sound based on the tolerance. Under the control of the control unit 11, candidates for double-division data can be extracted.

[0057] The multiplication data includes the prime numbers (prime harmonics) and multipliers (number of arrows) that make up the preceding term, and the The prime numbers (prime harmonics) and multipliers (number of arrows) that make up the terms are calculated based on the values ​​of the preceding and succeeding terms of the frequency ratio. The doubled data can be set in advance by factoring the It is not necessarily necessary, and by controlling using a control program, it is possible to generate a sound different from the input basic sound. It can also be calculated from the frequency ratio of the prime numbers (prime harmonics) that make up the first and second terms. The more types of chord symbols there are, the more complex the chord symbols become. Therefore, we limit the number of types to a certain number. For example, it is preferable that the number of each of the first and second items is two or less, and the total number of both the first and second items is two or less. You can set an upper limit for prime numbers, such as three or less, and the maximum number of arrows for each prime number. It is also preferable to set three conditions.

[0058] In addition, since the chord symbols correspond to frequency ratios and multiplication formulas, they can be expressed by the control of the control unit 11. It is possible to find the doubling formula and frequency ratio from the chord symbol, and to find the frequency ratio from the doubling formula. For example, when calculating the frequency ratio from a chord symbol, the frequency ratio is calculated by dividing the fundamental (Root note) is 1, and the pitch is a solid line indicating the fundamental note or another note, or a temporary pitch. The vertical lines a to d located above the dotted interval markings indicate the type of the vertical line. Multiply the prime number corresponding to the class, and for the vertical lines a to d located below, the type of the vertical line is This can be found by dividing the prime numbers.

[0059] By adding the control of the control unit 11 that makes it possible to calculate the frequency ratio from the chord symbol, The chord symbol control system 10 is a system for generating chords using chord symbols from the frequency of a fundamental note and a chord symbol. It can also include functionality as a sound output system that plays (outputs) chords. The chord symbols to be used are already created chord symbols (for example, chord symbols that have been stored in the control unit 11 in advance). Chord symbols (standard chords) can be selected and used, and images can be imported from external sources. The data can also be input using dimension symbols and dimension diagrams (vertical lines a to d) on the display unit 13. You can generate it by inputting (creating) it in the same way as in the original, or by editing the basic chord symbols. The sound output system obtains the frequency of the fundamental note and uses the input chord symbol to The type and number of dimension diagrams (vertical lines a to d) as comparative displays are acquired under the control of the control unit 11. By doing this, it is possible to identify the frequencies of the multiple notes that make up a chord, and output those frequencies. The system is configured to output the chord information for playback to the input unit 14. It can be achieved.

[0060] Next, referring to Figure 6, we will use chord symbols to express commonly known chord chords. Figure 6 shows the chord progression used in Pachelbel's Canon. This is a diagram expressed by numbers.

[0061] The chord progression of the canon, expressed in degree names, is I, V, VIm, starting with the D chord. , IIIm, IV, I, IV, V. Expressed in chord names, it is D, A, Bm , F#m, G, D, G, A. These can be expressed as shown in Figure 6(B). A chord that combines two different notes with a fundamental note (root note), such as a D chord or an A chord. As shown in Figure 6(A), both the G chord and the BASIC chord can be expressed using the same chord symbol. can.

[0062] Also, Bm chords and F#m chords can be expressed with the same chord symbols, but D chords Compared to the above, the vertical line b corresponding to dimension 3 is located above the intermediate interval display. This difference in appearance makes it possible to distinguish between major and minor chords. The difference between chords can be expressed. In other words, the image of the chord can be expressed by using chord symbols. This makes it easier to visually recognize the message.

[0063] Here, the image of chords that can be recognized by using chord symbols is shown in Figure 6. The explanation will be made with reference to chord symbols. Major chords (D chord, A chord, G chord) are It is expressed only by the dimension diagram (vertical lines a and b) located above the true feelings. The Bm chord and F#m chord are located above the fundamental note in the dimensional diagram (dimension 2). The vertical line a) on the left side of the dimensional diagram is located below the intervening interval (another note). It is expressed in a form including a vertical line b on the right (which indicates dimension 3).

[0064] In terms of frequency ratio, a major chord is expressed as a frequency ratio of "1:3:5", which is called " If you adjust the ratio to an integer between "1:1" and "1:2", it becomes "4:5:6". The major chord represented by " contains the number "4" which is a power (square) of 2, and is expressed as "1:5:3". The frequency ratio of these two chords can be expressed as integer ratios including "1".

[0065] On the other hand, minor chords are expressed with a frequency ratio of "1:3 / 5:3", and when adjusted, they become " "10:12:15" is "1" because it does not contain a power of 2. It cannot be expressed as an integer ratio including a fraction, such as "5 / 3:1:5." It becomes a chord that cannot be achieved.

[0066] Chords that can be expressed as integer ratios including "1" are expressed as natural harmonic series expressed as natural numbers. On the other hand, it is not possible to express it as an integer ratio including "1". The unstable minor chords do not create a natural image, but rather an unnatural chord. In chord symbols, the notes that create a darker tone are located below the interval markings. It can be visualized as including sounds that cannot be expressed without using the dimensional diagram. That is, the instability of a chord can be visualized by the chord symbol and expressed by the doubling formula. can also be visualized in the same way.

[0067] In addition to specifying the frequency and displaying (generating) the chord symbol, you can also use the chord symbol that has already been displayed. Editing the pitch display using the dimension diagram (vertical lines a to d) for the number (changing the dimension diagram or adding the pitch display) It is possible to create new chord symbols from the basic chord symbols. It is also possible to configure the control unit 11 so that it can generate the information, and the function can be added to the control unit 11. For example, the Bm chord shown in FIG. 6 is an example of a display mode when generated based on the D chord. .

[0068] Specifically, when the chord symbol corresponding to the D chord is displayed on the display unit 13, , copy the chord symbol of the D chord and paste it in another position. Then, The top note (note A) in the The control unit 11 controls the input operation to add the sound. By adding this, it becomes a function to generate Bm chord based on D chord. .

[0069] Also, in Figure 6, to make it easier to confirm that the chord symbols are generated based on the original chord symbols, The notes deleted from the basic chord symbol are displayed as intervals (horizontal lines) in a different style from the solid lines. The pitch is displayed as a line. And to make it easier to check the pitch position of the dotted line, The relationship with the chord symbol on which it is based is expressed by the vertical line a of dimension 2. As a result, A chord symbol is expressed by two vertical lines a of dimension 2, one on each side, to indicate the history of editing. It is possible to check the history of the chords, and to clearly express the relationship with other chord symbols. The F#m chord can also be easily generated based on the chord symbol of the A chord. When you play a Bm chord, the same chord symbol will be displayed in the upper position corresponding to the higher note. This can be expressed as:

[0070] In this way, chord symbols that express chords have different lengths and shapes in the vertical direction. Two or more types of dimension diagrams (vertical lines a to d) are used as contrast displays, and the The pitch markings (horizontal lines) are spaced apart according to the set rules. Therefore, which of these dimension diagrams is between the interval indications (horizontal lines)? Chords that allow you to identify the frequency ratio between the fundamental note and other notes by checking whether they are intervening. It is possible to use a representation using a dimensional diagram as a symbol. For example, the surroundings of a fundamental note and another note. Chords with a common ratio of wave numbers are represented by a common chord symbol using a dimension diagram with a common type and number. This makes it possible to create chord symbols that are easy to visually recognize the image of the chord. In addition, chords can be expressed by the ratio of intervals, so chords using microtones can also be expressed. It is possible to provide a chord symbol control system 10 capable of displaying chord symbols that can be played back.

[0071] Furthermore, according to the control program provided in the control unit 11 of the chord symbol control system 10, Dimensional diagrams as contrastive representations used to express the pitch position of intervals in chord symbols The combination of the type and number of vertical lines (a to d) is displayed based on the frequency of the multiple notes that make up the chord. It can be shown.

[0072] The present invention is not limited to the above-described embodiment, and may be modified within the scope of the present invention. It is easy to imagine that various improvements and modifications are possible within the scope of the present invention. For example, The present invention may be modified and implemented as described above.

[0073] For example, in the above embodiment, in the doubling formula or chord symbol, Although the example was explained using the case where the dimension 1 dimension symbol or dimension diagram is not used, We can express the doubled expression using the dimension diagram of dimension 1 and express the chord symbol. In this case, the image of the chord corresponding to the frequency ratio beyond the range of one octave is expressed by the chord symbol. Specifically, the dimension diagram uses a vertical line with a reference length of 12. It is possible to set the position of the vertical lines a to d different from the left and right positions (for example, the center position of the horizontal lines). ) chords including dimension 1 by vertical lines expressed in different ways (for example, thick dotted lines) It can be a symbol.

[0074] In the above embodiment, a straight horizontal line is used to indicate the intervals that make up the chord symbols. Although a case where a straight vertical line is used for the contrast display has been exemplified, it is not limited to this, and the pitch display may also be used. For either or both of the contrast displays, use displays using other line segments such as arcs or curves. It can also be expressed using symbols or characters such as circles or diamonds.

[0075] In the above embodiment, when the pitch direction of the chord symbol is set as the up / down direction, However, this is not limiting, and the pitch height direction may be set as the horizontal direction, and the pitch display may be You can also set the pitch direction to a different direction, such as displaying the pitch as an up-down line. do. [Industrial Applicability]

[0076] The chord symbol display system, chord symbol display program, and sound output system of the present invention are It can be used for analyzing folk music using sound and composing digital music. When listening to or playing an instrument, analyzing chords helps you to visualize them. It can be used for visual confirmation. [Explanation of symbols]

[0077] 10: Chord symbol control system (chord symbol display system, sound output system) 11: Control unit (comparison display acquisition means) 12: Input unit (frequency identification means, fundamental frequency acquisition means) 13:Display section (display means) 31,32: Double formula display area (candidate display area)

Claims

1. A chord symbol display system capable of controlling the display of chord symbols capable of expressing chords, a frequency specifying means for specifying the frequencies of a plurality of notes that make up a chord; One of the plurality of notes that make up the chord identified by the frequency identification means is called a fundamental note. In this case, the pitch of the fundamental note and the pitch of another note are Chords are expressed using pitch indications that are expressed by changing the corresponding vertical position. and a display means for displaying the chord symbol, The chord symbols are set to have different lengths and shapes in the height direction. At least one of the at least two contrasting displays includes a pitch display corresponding to the fundamental note and a pitch display corresponding to the other note. By interposing between the pitch indication corresponding to the sound of the The above pitch indications are arranged at different height positions, By checking the type and number of the contrast display, the frequency of the fundamental sound and the other sound can be determined. A chord symbol display system characterized by being configured to be able to specify the ratio of

2. The comparative display is a first reference number corresponding to a first reference number that is an integer or prime number equal to or greater than 3. A first comparative display set using one reference length and a first reference number that is an integer greater than the first reference number. a second reference number that is an integer or prime number different from an integer multiple of the first reference number; and a second comparison display set using a second reference length corresponding to the second reference length.

2. The chord symbol display system according to claim 1, wherein the chord symbol display system is configured as follows:

3. The display means displays the candidates for the combination of the type and number of the contrast display on a plurality of notes that make up a chord. A candidate display section that can display multiple types of sound based on the frequency of the sound is configured to be able to display the candidate display section.

3. A chord symbol display system according to claim 1 or 2.

4. A chord symbol display program that can be used in the chord symbol display system according to claim 1. and wherein the pair of notes used to express the pitch position of the interval indication in the chord symbol is The combination of the type and number of ratio indications can be displayed based on the frequencies of the multiple notes that make up the chord. A chord symbol display program characterized by being configured to be able to:

5. A sound output system capable of outputting a chord that combines multiple sounds, When one of the notes that make up a chord is considered to be the fundamental note, the frequency of that fundamental note is a fundamental frequency acquisition means capable of acquiring a number; The pitch of the fundamental sound and the pitch of a sound different from the fundamental sound are positioned in a height direction corresponding to the high and low pitches. The pitch indication expressed by changing the position of the notes and the length or interval in the height direction The contrast in chord symbols that can be expressed using two or more different contrast displays set differently a comparison display acquisition means capable of acquiring the type and number of ratio displays; The chord symbols are arranged such that at least one of the contrasting symbols is a musical interval table corresponding to the fundamental note. The pitch indication corresponding to the other note is inserted between the pitch indication and the pitch indication corresponding to the other note. Two or more pitch indications are arranged at separate height positions according to the rule, The fundamental sound whose frequency is acquired by the fundamental frequency acquisition means and the comparative display acquisition means and another sound whose frequency is identified based on the type and number of the contrast display obtained by A sound output system configured to be capable of outputting chords.

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