JPH03184090A - Tuning instrument - Google Patents

Abstract

PURPOSE:To obtain the tuning instrument that a beginner easily understands by providing a display control means which shifts an indicated transposed scale so that its tonic corresponds to the tonic of a specific reference scale and assigning it to each display part arrayed corresponding to the reference scale array. CONSTITUTION:This instrument is equipped with a display device (b) constituted by arranging display parts (a) where the pitch difference between the pitch of an external sound and a specific scale is displayed visually corresponding to a keyboard of at least one octave and the display control means (d) which shifts the scale (c) to be transposed into the indicated transposed scale and the indicated transposed scale so that the tonic corresponds to the tonic of the specific reference scale and assigns it to the respective display parts arrayed corresponding to the transposed scale array. In this case, even when a transposing means performs transposition, the tonic of each transposed scale is displayed in terms of the position of the tonic of the reference scale at all times by the shift assignment of the display parts of the display control means. Consequently, the tuning of a transposition musical instrument is possible with the same tone name with a notation sound, so the tuning instrument which makes an easy-to-see display for the beginner is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a tuning device, and particularly to a tuning device suitable for use in tuning a transposing musical instrument such as a wind instrument.

"Prior Art" Tuners are devices that measure the pitch of sounds generated by musical instruments, and various types have been developed. This tuner is equipped with one display section to show the tuning status! There is one that can simultaneously display the tuning status of all 12 tones constituting an octave. The device that can display 12 tones at the same time rotates a disc with a striped pattern at a rotation speed corresponding to the pitch of each of the 12 tones, and emits light at a cycle corresponding to the pitch of the instrument sound. ing. According to this configuration, when the musical instrument sound matches a predetermined pitch, one of the 12 display sections appears to have stopped due to a strobe effect, so that tuning can be performed visually.

``Problems to be Solved by the Invention'' By the way, when tuning a transposing musical instrument, it is preferable to display a display that corresponds to the transposing key. Therefore, some conventional tuners capable of displaying 12 tones simultaneously are designed so that the display of note names on each display section can be changed in accordance with the transposed key.

However, since there are 12 display sections (they are arranged to match the positions of the white and black keys of one octave on the keyboard), if the note name display is changed, it will be difficult for beginners to understand. For example, the key of C major (yo 1-d) arises.
The key in the position is the variable length: JXj (1
However, displaying ``r I''(C)'' or ``Shuku D)'' for the same key causes confusion.

This invention was made in view of the above-mentioned °JT t-r, so there is a 4; after r2A, and the key corresponding to 21t + G of the key is always displayed as "C". 4
The purpose is to share the ritual instrument.

``Means for Solving the Problems'' In order to solve the second problem, the present invention, as shown in FIG. If the display device has a plurality of display sections a arranged to correspond to at least one octave of keyboards, each of which displays a visual i+7 function, a transposing means for transposing the predetermined scale to a specified transposing scale, and C1 specified. It is characterized by comprising a display control means d which shifts the transposing scale so that its tonic corresponds to the tonic of a predetermined reference scale, and allocating the shifted scale to each of the display sections arranged in accordance with the transposing scale arrangement. shall be.

``Operation'' Even if the transposition is performed by the transposition means, the tonic of each transposed scale is always displayed at the position of the tonic of the reference scale by shift assignment of the display part by the display control means, making the display easy for beginners to see.

"Embodiments" Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that this embodiment is an embodiment in which tuning can be performed in both equal temperament and just intonation.

Here, these tunings will be briefly explained.

First of all, equal temperament is a temperament that is made practical and simple by averaging the pitches of the I2 notes that make up the octave.In keyboard instruments, this equal temperament is adopted because it is easy to modulate. . On the other hand, just intonation refers to an ideal, incandescent and harmonious temperament, in which each note within one octave is composed of harmonically pure combinations of highly consonant notes. Here, the structure of each temperament (including pure iJE minor 7th) when the reference tone is 0 cents is shown below. Just intonation shows examples of C major and C minor.

(Leaving space below) Table 1 Comparing this equal temperament and just intonation, the sound is naturally more beautiful than just intonation. Therefore, those who play using just intonation can produce beautiful-sounding performances.

In this case, for instruments with fixed pitches such as keyboard instruments, it is not possible to perform with just intonation, but for wind instruments and string instruments, etc., where the pitch can be set freely, it is possible to perform just intonation. It is. For this reason, when training players'4, pitch education based on just intonation is extremely important, and the need for this has increased particularly in recent years.

A: Configuration of Example Next, the configuration of the example will be explained. FIGS. 2, 3, and 4 each show the appearance of an embodiment of the present invention.
41, a front view, and a right side view.

In these figures, the keyboard 1 is horizontally divided into one octave of keys and other switches. Here, FIG. 5 is a plan view of the keychain l without showing the fraudulent publication, and as shown in the figure, near each key (LED 2.l-
. . . and LEDs 2a, 2a, . . . are provided. The keyboard 1 also includes a power switch St and switches S2 to S6 for selecting various modes.
SIO to S15 are provided. The switch S2 is pressed when performing equal temperament tuning, and the switch S3 is a switch pressed when performing just intonation tuning.

Switch S4. S5 is a switch that is pressed to specify a major key or a minor key when just intonation is selected. This is because in just intonation, the scales are different for major and minor keys. When the pure major scale is selected, the switch S6 is used to select the pure minor 7 scale in addition to the major scale.
This is a switch that is pressed when tuning a degree (hereinafter referred to as a minor seventh). Switch S7 is a switch that is pressed when transposing. Switch 5lO1SZ, S1
2. S13 are switches for specifying the range to be tuned, and each specifies the highest range, high range, middle range, and low range. In this embodiment, the tuning status of four octaves can be displayed simultaneously as described later.
The octave range is set by switches 5IO-3I3. For example, in the case of a piano, when tuning a note four octaves below the highest key, the switch SIO indicating the highest range is pressed, and when tuning a note four octaves above the lowest key, the switch SIO indicating the highest range is pressed. When performing tuning, switch SI3, which instructs the low range, is pressed. Next, switch SI4 is a switch for specifying a tuning mode, and switch SI5 is a switch for specifying a sound generation mode. Here, the sound production mode is a mode in which sound is produced according to the pressed key. In this example,
It is now possible to produce sounds like an electronic musical instrument.

Further, each of the above-mentioned keys and switches has a black background, and lights up when the key or switch is pressed.

Next, the display section 3 is adapted to display the frequency of the reference sound rAJ. As shown in FIGS. 2 and 3, the above-mentioned keyboard 1 is provided at the center of the front side of the main body.

In addition, the main body 3 is provided with a lid 6 that can be opened and closed.
It is a so-called lap pot type. This body 6
An LED display 7 is provided on the inner surface side.

The LED display 7, as shown in FIG.
, and each display; i57a has four LED display rows 7b, 7b, as shown in the figure. L.E.
Each of the D display sections 7b and 7b is composed of 16 LEDs, and the top row corresponds to the highest octave, and as you move to the lower rows, the corresponding pitches are sequentially lowered by l octave. ing. In addition, each display section 7a
, 7a, . . . are arranged at positions corresponding to the key arrangement of the corresponding pitch name.

Next, FIG. 7 is a block diagram showing the electrical configuration of this embodiment. In this figure, parts corresponding to those in FIGS. 2 to 6 described above are designated by the same reference numerals, and their explanations will be omitted.

In the figure, 20 is a CPU that controls each part of the device,
It operates according to the program in the ROM 21. RAM2
2, a working area, various flags, registers, etc. are set, and the CPU 20 performs bibliography and deletion of data as appropriate.

The output signal of the keyboard 1 is supplied to the CPU 20 via the keyboard interface 23. Further, the keyboard interface 23 is configured to have various modes set by control signals supplied from the decoder 28.

The oscillation 425 outputs a signal of a predetermined frequency to the frequency dividing circuit 26, and the frequency dividing circuit 26 oscillates according to the frequency divided data supplied from the CPU 20! Divide the oscillation output of X25. In this case, the CPU 26 controls each display section 7a.
Frequency division data corresponding to the pitches of each are output. That is, since each display section 7a is capable of displaying one octave of four octaves, the CPU 2G outputs divided data of one octave of four octaves to one display section 7a. It has become. The output signal Sa of the frequency dividing circuit 29 can be selectively supplied to either the amplifier 29 or the comparator 39. in this case,
The signal Sa amplified by the amplifier 29 is sent to the speaker 30
This allows the sound to be emitted at the frequency after the frequency division.

Next, the microphone 35 takes in the sound of the instrument to be tuned, and the output signal is passed through the filter 36 to the amplifier 37.
supply to. The output signal of the amplifier 37 is sent to the waveform shaping circuit 3.
After being waveform-shaped by 8, it is supplied to one input terminal of a comparator 39 as a signal sb. As mentioned above, the output signal Sa of the frequency dividing circuit 26 is supplied to the other input terminal of the comparator 39, and the comparator 39 outputs a signal corresponding to the frequency difference between these signals.
Output to the ED driver 40. In this case, the signal sb+ supplied to the other input terminal of the comparator 39 corresponds to 12 tones x 4 corresponding to each of the display sections 7a, 7a...
The octave's worth of signals are supplied in parallel. L E I) The driver 40 is the above-mentioned LED
This is a circuit that drives the display 7, and the comparator 3
Display control corresponding to the output signal of 9, that is, the signal Sa
Each display section 7af performs display control corresponding to the frequency difference between
Do it on i.

Further, the LED driver 40 controls differential operation and non-operation of the display sections 7a, 7a, . . . according to the set mode.

Regarding the signals Sa and Sb, the signal sb may be frequency-divided to correspond to each octave according to instructions from the CPU 20, and the signal Sa may be configured to have a frequency determined for each note name. .

B: Operation of the embodiment Next, the operation of this embodiment with the above-described configuration will be explained.

First, turn on the power switch SL provided on the keyboard L.
When is pressed, power is supplied to the device and tuning switch S
+4 lights up and the program shown in FIG. 8 is activated. In the initial state, this is the tuning mode,
This is because the standard pitch A=422 [11zl, fine adjustment ±O]1 cent, equal temperament, high range (corresponding to S11 switch), and no transposition are automatically set. At this time, switches D, U or switches SIO to S
By pressing I3, a subroutine (not shown) is started, and the reference pitch and display range can be changed. Then, the process goes to step SP1 shown in FIG. 8, and waits for the selection of equal temperament or just intonation, but since equal temperament is set as the initial setting, control is performed in equal temperament mode. In the equal temperament mode, as shown in FIG. 9, all the display sections 7a, 7a, . . . are turned on to provide a display. The lighting control in this case is as follows, and in the initial state, C major is set, and the C note display section 7a corresponds directly to the C note of the musical instrument.

Let's take as an example the case of tuning the third octave note, that is, the A3 note. First, the CPU 26 outputs frequency division data according to equal temperament to the frequency division circuit 26. As a result, the frequency of the horn signal Sa output from the frequency dividing circuit 26 becomes the frequency of each tone forming the equal temperament.

On the other hand, the practitioner performing the tuning emits the A3 tone from his/her instrument and inputs it into the microphone 35 shown in FIG.

As a result, the musical instrument sound becomes a signal sb via the microphone 35, filter 36, amplifier 37, and waveform shaping circuit 38, and is supplied to one input terminal of the comparator 39. As a result, the output signal of the comparator 39 is in a state corresponding to the amount of deviation from the corresponding pitch for each LED display column. Then, if the instrument sound is slightly higher than A3, that is, A
If it is between note 3 and note A#3 (or note B and note), the LED driver 40 selects the one corresponding to note rA#/Bb-1 of the third octave from among the LED display rows 7b.
Regarding b3), as shown in FIG. 1O, the display moves in a flowing manner to the left, indicating to the practitioner that the pitch of the musical instrument sound is lower than the sound indicated by this 7ED display column. Also, LED
In the display column 7b, the note B corresponding to the rG#/Ah-1 note below Alz in the third octave is displayed moving to the right as shown in the figure. Note that the other rows of LED tables move in both directions as shown by arrows in the figure. In this case, the LED driver 40 is
From the output signal of comparator 39 9:? The difference between the S sound and the reference frequency is recognized, and the moving speed of each LED display row is controlled based on this frequency difference. Zunawara, the sound is A3 in Raku2.
The closer you are to the sound, the slower your moving speed is, and the farther away you are from A3, the faster your moving speed is.

Then, as the practitioner approaches the sound of the instrument to the A3 sound, the A3
The pitch difference between the notes and the notes becomes smaller, and this causes the f,
The moving speed of the ED display column 7b3 becomes slower.

Further, when the musical instrument sound approaches the A3 sound and they match, the LED display row 7b3 becomes a static display at this point.

This static display consists of 16 LEs that make up the LED display row.
This is a display in which D blinks every fourth. In addition, (1) The 16 LEDs blink for every 2 octave lower A and every other 2 octave lower A. The above is the display control in the equal temperament mode. In this case, the display portions 7a, 7a, . . . note name display and the pitch of the instrument sound completely match.

Next, when switch S7 instructing transposition is pressed, the first
The transposition mode is set by steps SPaI and 5Pa2 shown in FIG. Then, proceed to step 5Pa3,
Waiting for transposition key setting input, LED2b, 2b...
... will flash simultaneously. The transposition key setting is the setting of the tonic of the key to be transposed, and is performed by pressing any of the keys "C" to rBJ shown in FIG. 5. −
For example, if you press K rBbJ, the tonic will be changed to B G and flat major will be set. That is, the CPU 20 uses the key []
When R-1 is pressed, 200 cents is uniformly subtracted from the map data indicating the pitch of each equal-tempered note stored in 110M21, and the frequency division data is sent to the frequency division circuit 26 according to the result of this calculation. supply At this time, only the LED 2b corresponding to the key rBbt lights up 4 degrees. As a result, the frequency of the signal Sa output from the frequency dividing circuit 26 decreases. Therefore, the frequency of the Bb sound is the standard for the C sound display section 7a. Similarly, the reference frequency for the pond sound display section 7a decreases, for example, D, E, F, G.
.

Regarding the display section 7a of A and B sounds, C and D respectively.

El>, F, G, and A sound frequencies serve as standards.

Next, start the tuning processing subroutine shown in FIG. Here, since it is already in tuning mode at the time of initial setting, the judgment in step 5Pbl is "tuning".
Then, the process goes to step 5Pb2. In step 5Pb2, no new processing is performed, and the process proceeds to step 5Pb3, where measurement sound is input. That is, an instrument sound from the microphone 35 is input, and this instrument sound is converted into a signal sb and taken in.

Then, the process proceeds to step Sb4, and the measurement sound is displayed.

This display processing is similar to the display before transposition described above. However, the actual musical instrument sounds corresponding to each display section 7a, 7a, . . . are as shown in FIG.

Note that when the switch S15 shown in FIG. 5 is pressed, the sound generation mode is instructed, and step SPb1 shown in FIG.
is determined to be "pronunciation". As a result, step 5
Proceeding to step Pb5, the pronunciation mode is set, and the process further proceeds to step 5Pb6, where the name of the pronunciation tone is specified. This designation of the pronounced sound name is performed by pressing any of the keys "C" to "r[3J" shown in FIG. 5]. Then, when any key is pressed, the process proceeds to step 5Pb7, where a sound generation process is performed. This sound generation process is performed by the frequency dividing circuit 26 supplying the amplifier 29 with a frequency divided output corresponding to the pressed key. As a result, a sound corresponding to the key is emitted from the speaker 30. Since the frequency-divided output in this case has a frequency corresponding to the frequency-divided data that has been subjected to the transposition process, the generated tone has the pitch after the transposition. For example, when key "C" is pressed, the sound (actual sound) generated is [3b].

The above are the various controls in equal temperament mode.

On the other hand, when the switch S3 for selecting just intonation is pressed in the selection wait state of step SPI shown in FIG. 8, it is determined that "just intonation has been selected" and the process proceeds to step SP4. In step SP4, an instruction input as to whether the key is major or minor is awaited. Here, when the switch S5 instructing the minor key is pressed, it is determined that "minor key selection" is performed, and step SP
5, the minor key mode is set, and step s p s is reached.

Further, when the switch S4 instructing the major key is pressed in step SP4, the process advances to step SP6 and the major key mode is set. After the process of step SP6, the process proceeds to step SP7, and waits for the input of the switch S6 that enables tuning of the minor seventh.

Here, if the switch S6 is pressed, the mode is set to allow tuning of the minor 7th, and if the switch S6 is not pressed, tuning of the minor 7th is disabled.

After the processing in step SP7, the process advances to step SP8. In step SP8, the input of key setting is awaited, and the LEDs 2a, 2a, . . . are flashing simultaneously. This is because in just intonation, even if the note name is the same, the pitch differs depending on the transposed scale. Through the above processing, one of the keys of just intonation is selected, and only the LED 2a corresponding to that key is lit.

Next, in step SP9, it is determined whether equal temperament has been selected. This is to determine whether equal temperament is selected because switch S2 may be pressed after just intonation is selected. If just intonation is to be continued, the determination at step SP9 is rNOJ, and the process proceeds to step 5PIO. In step 5pio, just intonation resetting processing is performed. If just intonation continues, nothing is done in step 5PIO and the process returns to step SP3. Thereafter, the above steps are repeated and the just intonation mode continues.

Here, display control in just intonation mode will be explained. In the just intonation mode, valid pitch names are predetermined for each scale as shown in FIG. 14. for example,
In just intonation C major, only the notes CD E F G A B are valid. In other words, the tuning status is displayed only for these tones. These notes are the notes that make up the C major scale.

The reason why the tuning status of only the scale constituent notes is displayed in this way is that it is easier for practitioners to learn just intonation when unnecessary notes are not displayed. However, if the minor 7th is selected in the major key, the tuning state of the minor 7th (Rb in the case of C major) is displayed in addition to the tones shown in FIG. At this time, the pitch of r Bl>J is as shown in Table 1.

Next, an example of the tuning state is shown in FIG. 15. This figure shows the display sections 7a and 7 from E note to E note when just intonation C major is selected and the D note of the third octave is tuned.
The state of a... is shown.

As shown in this figure, the tone r for which the tuning status display is invalid.
In the LED display rows 7b, 7b, for the c#/Db-+ and rD#/EbJ sounds, two LEDs are statically lit, indicating that these sounds are invalid. Then, the LED display row 7tz for the D sound displays statically, and the other LED display rows perform moving display. However, the entire LED array 7b lights up, every fourth LED array 7b lights up, and every second LED array 7b lights up.
7bl blinks every other time, and its movement can be recognized.

This is similar to the case of the equal temperament mode described above. Further, FIG. 16 is a diagram showing the entire display state of the LED display 7 in the so-called just intonation, in which the LED display rows of invalid tones are displayed at two stationary points. Also, the first
7, 18, 19, and 20 show the display states of the LED display 7 in the case of just intonation G major, just intonation C major minor seventh, just intonation C minor, and just intonation A minor, respectively. .

Next, a comparison process between the instrument sound frequency and the reference frequency in the case of just intonation major key and just intonation minor key will be explained. In principle, this comparison process is similar to the case of equal temperament, and the signal Sa
This is done by comparing and processing the signal Sb and the signal Sb (see FIG. 7). However, in the case of just intonation, the frequency division data that determines the frequency of the signal Sa is different from that in the case of equal temperament. That is, the CI) U 20 creates frequency division data based on the maps shown in FIGS. 21 and 22, and supplies this frequency division data to the frequency division circuit 26. Figure 21 and 2
The maps shown in Figure 2 are for just intonation major and just intonation minor, respectively.
This is a map for AI, and is stored in the ROM 21. These maps are designed to show how far away, in cents, from the note name in the 6th true or the same note name in equal temperament. For example, in the C major key of just temperament, the tonic note E (C) is the same as the E note in equal temperament, but the D note (shi) is 4 cents higher than the D note in equal temperament. The E note is 14 compared to that of the equal temperament.
It is set to be lower in cents. The same applies to other keys. Note that the equal temperament map is also stored in the ROM 21, and since the number of cents for each note is shown in Table 1 mentioned above, the map for this is omitted from the illustration. The above is the comparison process in just intonation.

Next, a case will be described in which equal temperament is set after just intonation has been set. When just intonation is set, steps SP3 to SP5pto shown in FIG. 8 are repeatedly executed, but if switch S2 shown in FIG. 5 is pressed during this execution, the determination in step SP9 is r Y E S J. Therefore, the equal temperament mode is set in step 5PII. Next, step SP+2 is reached, and it is determined whether or not just intonation has been selected again. If switch S3 is not pressed, this determination is rNOJ, and step SP9
Return to Thereafter, if the switch S3 is not pressed, the loop starting from steps SP9.5PII and 5P12 is repeated, and the equal temperament mode is continued.

As a result, the display in the above-mentioned equal temperament mode is performed (see FIGS. 9 and 10). Next, when the switch S2 is pressed again to make it into just intonation, the determination at step 5P12 becomes rYES, J, and the process proceeds to step 5PIO. In this case, the step 5 PIO process is to set the mode to the same mode as the previous setting in just intonation. In other words, if it is C major in just intonation before switching to equal temperament mode,
In step 5 PIO, the C major key of just intonation is set again. Similarly, if the previous mode was the just intonation C major minor seventh selection mode, this mode is reset.

In this case, when the key was set in the previous just temperament mode or when switching to equal temperament mode, the distinction between major and minor keys, the presence or absence of minor seventh selection, and the key (tonic) are set in a predetermined area in the RAM 22. In step 5 PIO, the mode is reset according to the data stored in the RAM 22.

The reason for performing such resetting is to make it easier for practitioners to compare the pitch of each note in equal temperament with the pitch of each note in just intonation.

Next, a case in which transposition is performed in just intonation mode will be described.

As an example, a case will be described in which C major is initially set and is changed to f'l:JR downward by a major second. This is an effective method for tuning music 2x in the key of B using the note names as written.

First, when the switch S7 shown in FIG. 5 is pressed, the above-mentioned NONE routine shown in FIG. 11 is activated. In step 5Pa3 of this process, when the tonic of the key to be transposed, that is, the key rBbJ is pressed, the CPU 20 subtracts 200 cents from the cent value obtained from the map shown in FIG. is output to the frequency dividing circuit 26. As a result, the frequency of the output signal Sa of the frequency dividing circuit 26 decreases, similar to the case of transposition in equal temperament. Therefore, as shown in FIG. 23, C, G, E, F, G
, A, and B, the actual musical instrument sounds (actual sounds) corresponding to the display section 7a are B) and C, respectively.

The sound will be D, Eft, F, G, and A. In this case, the display section 7a, which displays two fixed points, is the same as in the case of just intonation C major. Then, the NONE routine shown in FIG. 12 is activated, and each display section 7a, 7a is prompted to input an instrument sound.
. . . performs moving or fixed display for musical instrument sounds. If the mode is switched to the sound generation mode, the sound generation process is performed in the same manner as in the case described above (see step 5Pb5.6.7 in FIG. 12).

Furthermore, in the case of just intonation minor, the same processing as above is performed. For example, when just intonation C minor is set, the correspondence between each display section 7a and the instrument sound is as shown in FIG. 24, and (C#/Db), E, (F#/ G),
The display section 7a of sound A is displayed at two fixed points. When the key is transposed downward by a minor third in accordance with the above-described procedure from this state, the relationship between each display section 7a and the actual four musical tones becomes as shown in FIG. 25.

This is useful when tuning an instrument in the key of A using the note names as written. In this case, the display section 7a, which has a fixed two-point display, is the same as in the case of just intonation C minor. In other words, the display section 7a that displays the tuning display is not changed, but only the corresponding tone (actual tone) is changed.

C: Example effect This embodiment has the following effects.

When tuning a transposing instrument, according to the present invention, it can be tuned using the same note names as in notation, and the arrangement of the display section is also the same as that of a general keyboard instrument, making operation and judgment extremely easy for beginners. It has this excellent effect.

D: Modification In the embodiment, the indicator 7a for the octave was provided, but the present invention can of course be applied to a tuner that displays a single tone. Of course, the same effect can be obtained by shifting only the reference tone while leaving the pitch name selection unchanged, making the tuner easy for beginners to understand.

"Effects of the Invention" As explained above, according to the present invention, even if the transposition is performed by the transposition means, the tuning on the transposition instrument is always notated by the shift assignment of the display section by the display control means. Since it is possible to use the same note name as the note, the display can be easily viewed by beginners.

[Brief explanation of drawings]

FIG. 1 is a functional block diagram showing the configuration of the present invention, FIGS. 2, 3, and 4 are a plan view, front view, and right side view showing the external appearance of an embodiment of the invention, and FIG. 5 6 is a plan view showing details of the keyboard 1 in the same embodiment, FIG. 6 is a front view showing details of the LED display 7 in the same embodiment, FIG. 7 is a block diagram showing the electrical configuration of the same embodiment, and FIG. The figure is a flowchart showing the operation of the same embodiment.
10 and 10 are respectively front views showing the display state of the LED display unit 7 in equal temperament mode, FIG. 11 is a flowchart showing transposition processing, FIG. 12 is a flowchart showing tuning and sound production processing, and FIG. 13 Figure 14 is a front view showing the relationship between each display section and the actual four musical tones (actual notes) when transposition is performed in equal temperament mode, and Figure 14 shows the note names displayed in six keys in just temperament mode. Tables shown, Figures 15 and 16
The figure shows LED display 7 in C major in just intonation.
17, 18, and 19 are front views showing the display state of
The figure and Figure 20 are for just intonation G major, just intonation C major minor seventh selected, just intonation C minor, and just intonation A minor, respectively.
A front view showing the display state of the ED display 7, FIGS. 21 and 22 are maps showing pitch differences between each tone and each equal temperament tone in just intonation major and just intonation minor, respectively, and FIGS. 23 to 25 2 is a front view showing the relationship between each display section and the actual musical instrument sound when transposition is performed in just intonation. 7...LED display (display device), 7a
. . . Display section, 20 . . . CPU (display control means), S7 . . . switch (transposition means).

Claims (1)

[Scope of Claims] A display device in which a plurality of display units are arranged corresponding to at least one octave of keyboards for visually displaying the pitch difference between the pitch of a sound input from the outside and a predetermined scale; transposing means for transposing the predetermined scale to a designated transposing scale; and shifting the designated transposing scale so that its tonic corresponds to the tonic of a predetermined standard scale, and arranging the designated transposing scale in correspondence with the standard scale arrangement. and display control means for allocating each of the display sections to the display sections.