JP5156885B2 - Tuning display, tuning display method, tuning display program and recording medium thereof - Google Patents

Description

  The present invention relates to a tuning display, a tuning display method, a tuning display program, and a recording medium for displaying whether or not the pitch of a musical instrument is equal to a predetermined reference pitch using light emitting means such as an LED. .

There has been proposed an electronic tuner that displays whether or not the pitch of a musical instrument is equal to a predetermined reference pitch using light emitting means such as an LED. For example, when the difference between the pitch of the musical instrument and a predetermined reference sound is measured and the deviation is within a predetermined range, the light emitting means is lit stationary, and the deviation is outside the predetermined range. There is a tuner that flashes the light emitting means faster as the deviation is larger, and that the emission color of the light emitting means when shifted in the positive direction is different from the emission color of the light emitting means when shifted in the negative direction. (For example, refer to Patent Document 1).
JP 2003-99034 A JP-A-8-50484

When two sounds having similar frequencies are played at the same time, a phenomenon called “growing” is heard in which a third sound is heard at the difference between the two sounds. The musician tuned by listening to the beat generated by simultaneously playing the sound of the musical instrument to be tuned and the reference sound produced using a tuning fork or the like. That is, the tuning of the musical instrument is performed by repeating fine adjustment so that the generated beat is reduced or no beat is generated.
The electronic tuner described in the background art does not consider a tuning method by listening to this beat. For this reason, there was a problem that the usability of the electronic tuner described above was not always good.

  An object of the present invention is to provide a tuning display, a tuning display method, a tuning display program, and a recording medium thereof that enable natural tuning.

The fundamental frequency extraction means extracts the fundamental frequency of the input sound. The index calculation means calculates an index representing the proximity between the pitch of the input sound and the predetermined reference sound using the extracted fundamental frequency. The modulation frequency determination means determines a modulation frequency having a lower frequency as the input sound pitch is closer to a predetermined reference sound using an index indicating the calculated sound proximity. The brightness control means turns on the light emitting means with a brightness higher than a predetermined brightness when the input sound pitch and the predetermined reference sound pitch are closer than a predetermined proximity, and otherwise determined. The luminance of the light emitting means is changed at the modulation frequency. The brightness control means includes an average brightness determining means for determining a higher average brightness as the input sound pitch is closer to a predetermined reference sound, and the modulation frequency determined with the determined average brightness as a center. To change the luminance of the light emitting means. The luminance control means further includes amplitude determining means for determining an amplitude that is smaller as the input pitch is closer to a predetermined reference pitch, and based on the determined amplitude and a determined average The luminance of the light emitting means is changed at the determined modulation frequency with the luminance at the center.

  When the pitch of the input sound and the pitch of the reference sound are different, a natural tuning is possible by visually expressing the difference in pitch as a beat.

[First embodiment]
A tuning display 100 according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a diagram illustrating a functional configuration of the tuning display 100. FIG. 2 is a flowchart illustrating a processing example of the tuning display device 100.

<Step S1>
A sound emitted from a musical instrument to be tuned is input to the fundamental frequency extraction unit 1. The sound collected by the microphone (not shown) may be directly input to the fundamental frequency extraction unit 1, or the sound collected by the microphone is once stored in an arbitrary storage means and read out from the storage means. The generated sound may be input to the fundamental frequency extraction unit 1. Moreover, the sound amplified by the sound amplifier may be input.
The fundamental frequency extraction unit 1 extracts the fundamental frequency of the input sound (step S1). The extracted fundamental frequency is sent to the reference sound determination unit 2 and the index calculation unit 3. The method for extracting the fundamental frequency is arbitrary.

<Step S2>
The reference sound determination unit 2 selects a scale sound having a frequency closest to the extracted fundamental frequency (step S2). Hereinafter, the selected scale sound is referred to as a reference sound. Information on the reference sound is sent to the index calculation unit 3 and the pitch name display control unit 7.
The pitch name display control unit 7 uses the information related to the reference sound to control the reference sound to be displayed on the pitch name display 8 such as 7seg.

<Step S3>
The index calculation unit 3 calculates an index representing the closeness of the input sound pitch and the reference sound height using the basic frequency of the input sound and the information related to the reference sound (step S3). In this example, the frequency difference (diff_freq) between the fundamental frequency of the input sound and the frequency of the reference sound is used as the index. That is, the index calculation unit 3 obtains a frequency difference between the frequency of the input sound and the frequency of the reference sound (for example, a value obtained by subtracting the frequency of the reference sound from the basic frequency of the input sound) to determine the modulation frequency. Send to part 4.

<Step S4>
The modulation frequency determination unit 4 uses the index (in this example, the frequency difference) calculated by the index calculation unit 3 to determine a lower modulation frequency (mod_freq) as the input sound pitch is closer to the reference sound height. (Step S5). The determined modulation frequency is sent to the luminance control unit 5. For example, the modulation frequency is obtained by inputting the absolute value of the frequency difference to the broad-sense monotone increasing function f. The broad-sense monotone increasing function f is a function y = f (x) that satisfies the condition: f (x1) ≦ f (x2) if x1 ≦ x2. FIG. 3 shows an example of the broad monotonically increasing function f when the frequency difference is diff_freq and the modulation frequency is mod_freq. As illustrated in FIGS. 3A to 3D, the function f is a function that sets the modulation frequency = 0 when the frequency difference is 0 or close to 0.

This function f may be different depending on the reference sound. For example, a broad monotone increasing function f having a smaller increase rate of the function f is used as the reference sound is higher. As a result, the higher the reference sound, the more sudden the change in the modulation frequency can be prevented with only a slight change in the difference between the pitch of the input sound and the reference sound.
In FIG. 3, fmax is the maximum value of the modulation frequency. For example, fmax should not exceed a frequency at which a human can feel a change in luminance. For example, fmax = 300 Hz to 500 Hz. If fmax exceeds a frequency at which a human can feel a change in luminance, if the modulation frequency is higher than a certain level, the light emitting element may appear to be always lit. By preventing fmax from exceeding a frequency at which a human can feel a change in luminance, it becomes possible for a human to feel a change in luminance at a modulation frequency in the entire range below fmax. It can be used effectively.

<Step S5>
The luminance control unit 5 turns on the light emitting element 6 with a luminance equal to or higher than a predetermined luminance when the input pitch and the reference pitch are close to a predetermined proximity, When the pitch of the reference sound is far from a predetermined closeness, the luminance of the light emitting element 6 is changed at the determined modulation frequency. In this example, if the modulation frequency is 0, the light emitting element 6 is turned on with the maximum luminance. If the modulation frequency is not 0, the luminance of the light emitting element 6 is changed at the modulation frequency. As described above, the function f has a modulation frequency = 0 when the frequency difference is 0 or close to 0. By changing the function f with respect to how close the frequency difference is to 0 when the modulation frequency = 0, the light emitting element 6 is turned on when the input sound level is close to the reference sound level. It is possible to freely determine whether the light is to be lit at a predetermined brightness or higher.

With the above processing, as illustrated in FIG. 4, the luminance can be changed with respect to the pitch error. Here, in the drawings including FIG. 4, the present specification, and the claims, the term “match” means not a perfect match but a match having a certain range in principle. For example, when the pitch of the input sound is close to a predetermined pitch (for example, when the difference between the pitch of the input sound and the reference sound is -3 cents to +3 cents, etc.) , Suppose that the pitch of the input sound matches the pitch of the reference sound. Of course, “match” may mean “perfect match” in some contexts.
In this way, when the pitch of the input sound and the pitch of the reference sound are different, tuning can be naturally performed by visually expressing the difference in pitch as a beat.

[Second Example]
In the tuning display according to the second embodiment of the present invention, the luminance control unit 5A includes an average luminance determination unit 51, an amplitude determination unit 52, and a control unit 53, and the control unit 53 is determined by the average luminance determination unit 51. It differs from the tuning display 100 of the first embodiment in that brightness control is performed based on the average brightness, the amplitude determined by the amplitude determination unit 52, and the modulation frequency determined by the modulation frequency determination unit 4. Since the other points are the same as those in the first embodiment, a duplicate description is omitted. Hereinafter, with reference to FIG. 5, only the brightness control unit 5A, which is different from the first embodiment, will be described.

  As illustrated in FIG. 5, the luminance control unit 5 </ b> A includes, for example, an average luminance determination unit 51, an amplitude determination unit 52, and a control unit 53. The modulation frequency determined by the modulation frequency determination unit 4 is input to the luminance control unit 5A.

  The average luminance determining unit 51 determines an average luminance that is higher as the pitch of the input sound is closer to the reference sound. For example, the output when the modulation frequency determined by the modulation frequency determination unit 4 is input to the broad monotone decreasing function g is defined as the average luminance. The broad-sense monotone decreasing function g is a function y = g (x) that satisfies the condition: g (x1) ≧ f (x2) if x1 ≦ x2. FIG. 6 shows an example of the broad-sense monotone decreasing function g when the modulation frequency is mod_freq. 6A to 6D, fmax means the upper limit of the modulation frequency, and bmax means the maximum luminance. Thus, the broad-sense monotone decreasing function g is a function that outputs a predetermined luminance (for example, maximum luminance) when the frequency difference is 0 or close to 0, for example.

The amplitude determination unit 52 determines the smaller amplitude as the input sound pitch is closer to the predetermined reference sound. For example, the output when the modulation frequency determined by the modulation frequency determination unit 4 is input to the broad monotone increasing function g ′ is used as the amplitude.
The control unit 53 is centered on the average luminance determined by the average luminance determination unit 51 and based on the amplitude determined by the amplitude determination unit 52 and the modulation frequency determined by the modulation frequency determination unit 4. To control.

  In the second embodiment, the brightness (average brightness) of the light emitting element 6 increases and the change width (amplitude) of the brightness decreases as the pitch of the input sound is closer to the reference sound. Therefore, also in the second embodiment, the luminance control unit 5A lights the light emitting element 6 with a luminance equal to or higher than the predetermined luminance when the input sound pitch and the reference sound pitch are closer than the predetermined proximity. At the same time, when the pitch of the input sound and the pitch of the reference sound are far from a predetermined closeness, the luminance of the light emitting element 6 can be changed at the determined modulation frequency.

The tuning display of the second embodiment has an advantage that tuning can be performed more naturally because the light emitting element 6 continuously changes as the pitch of the input sound approaches the pitch of the reference sound. is there.
By determining the functions g and g ′ so that the average brightness becomes the maximum brightness and the amplitude becomes 0 when the pitch of the input sound and the pitch of the reference sound are closer than a predetermined closeness, FIG. As illustrated in FIG. 7, the luminance of the light emitting element can be changed according to the pitch of the input sound and the pitch of the reference sound.

  In the second embodiment, the amplitude determining unit 52 is not always necessary. The above-described process of providing the average luminance determining unit 51 without providing the amplitude determining unit 52 and increasing the luminance (average luminance) of the light emitting element 6 as the pitch of the input sound is closer to the reference sound. The brightness control unit 5A also turns on the light emitting element 6 with a brightness higher than the predetermined brightness when the input sound pitch and the reference sound pitch are closer than the predetermined proximity. When the pitch of the generated sound and the pitch of the reference sound are far from a predetermined closeness, the luminance of the light emitting element 6 can be changed at the determined modulation frequency.

[Third embodiment]
The tuning indicator according to the third embodiment has a light emission color of the light emitting element when the pitch of the input sound matches the pitch of the reference sound, and the pitch of the input sound is higher than the pitch of the reference sound. This is an embodiment in which the light emission color of the light emitting element when it is high is different from the light emission color of the light emitting element when the pitch of the input sound is lower than the pitch of the reference sound. By controlling the luminance of two light emitting elements having different light emission colors, a first light emitting element 61 and a second light emitting element 62 described later, the light emission color of the light emitting element is appropriately changed.

  As illustrated in FIG. 8, the tuning indicator according to the third embodiment further includes a light emission color determination unit 9, and the light emitting element 6 </ b> A includes two light emission colors of the first light emitting element 61 and the second light emitting element 62. The first embodiment and the second embodiment are provided in that the luminance controller 5B includes a first luminance controller 54 and a second luminance controller 55 for controlling the luminance of these two light emitting elements. It is different from the rhythm indicator. About another point, since it is the same as that of the tuning display by 1st Example and 2nd Example, duplication description is abbreviate | omitted.

The index calculated by the index calculation unit 3 (in this example, the frequency difference between the input sound and the reference sound) is input to the modulation frequency determination unit 4 and the emission color determination unit 9, respectively.
The modulation frequency determination unit 4 determines the modulation frequency using the index calculated by the index calculation unit 3 by the same method as described in the first embodiment, and sends it to the luminance control unit 5B. That is, using the index calculated by the index calculation unit 3, the modulation frequency is determined to be lower as the pitch of the input sound is closer to the reference sound.

  The light emission color determination unit 9 determines information (light emission color information) for determining the light emission color of the light emitting element 6A using the index calculated by the index calculation unit 3, and sends the light emission color information to the luminance control unit 5B. send. With reference to FIG. 9, a specific example of the processing flow of the emission color determination unit 9 will be described. FIG. 9 is a flowchart illustrating the processing flow of the emission color determination unit 9.

<Step S61>
The light emission color determination unit 9 sets the flag G_flg = 0 (step S61).
<Step S62>
The determination unit 91 of the light emission color determination unit 9 determines whether the input sound pitch matches the reference sound pitch, or whether the input sound pitch is lower than the reference sound pitch. (Step S62). For example, when the index is a frequency difference (basic frequency of input sound−frequency of reference sound), the frequency difference is diff_freq, and a predetermined closeness between the pitch of the input sound and the height of the reference sound is set. If a is set, it is determined whether or not diff_freq ≦ a.

<Step S63>
When it is determined that the pitch of the input sound matches the pitch of the reference sound, or the pitch of the input sound is lower than the pitch of the reference sound, the light emission color determination unit 9 As the flag G_flg = 1, this flag G_flg = 1 is sent to the luminance control unit 5B as the emission color information (step S63).

If the pitch of the input sound matches the pitch of the reference sound, or if it is not determined that the pitch of the input sound is lower than the pitch of the reference sound, the emission color determination unit 9 As a flag G_flg = 0, this flag G_flg = 0 is sent to the luminance control section 5B as emission color information.
The first luminance control unit 54 of the luminance control unit 5B controls the luminance of the first light emitting element 61 based on the modulation frequency determined by the modulation frequency determination unit 4. For example, if the modulation frequency is 0, the first light emitting element 61 is turned off. If the modulation frequency is not 0, the luminance of the first light emitting element 61 is changed at the modulation frequency.

The second luminance control unit 55 of the luminance control unit 5B controls the luminance of the second light emitting element 62 based on the value of the flag G_flg that is the emission color information. For example, if G_flg = 0, the second light emitting element 62 is turned off, and if G_flg = 1, the second light emitting element 62 is turned on with a predetermined luminance.
Accordingly, for example, when the emission color of the first light emitting element 61 is red and the emission color of the second light emitting element 62 is green, the pitch of the input sound and the reference sound are set as illustrated in FIG. Accordingly, the luminance and emission color of the light emitting element can be changed.

  According to the tuning indicator according to the third embodiment, the light emission color of the light emitting element when the pitch of the input sound matches the pitch of the reference sound, and the light emission color of the light emitting element when the pitch does not match Is different. For this reason, it is easy to determine whether or not the pitch of the input sound matches the pitch of the reference sound. In addition, the emission color of the light emitting element when the input pitch is higher than the reference pitch and the emission color of the light emitting element when the input pitch is lower than the reference pitch. Different. For this reason, it is easy to determine whether the input sound is shifted higher or lower than the reference sound.

In addition, when the pitch of the input sound and the pitch of the reference sound are closer than the predetermined proximity, the emission color of the light emitting element, and when the pitch of the input sound and the pitch of the reference pitch are far from the predetermined proximity The light emission color of the light emitting element when the input pitch is higher than the reference pitch and the input pitch is higher than the reference pitch. You may make the luminescent color of the light emitting element in the case of low the same.
For this purpose, for example, the emission color determination unit 9 may always set the flag G_flg = 1 and send this flag G_flg = 1 to the luminance control means as the emission color information.
Further, the light emission color determination unit 9 may perform the process of step S62 ′ exemplified by a dotted line in FIG. 9 instead of step S62.

  Specifically, the determination unit 91 of the light emission color determination unit 9 determines whether or not the input sound pitch and the reference sound pitch are closer than a predetermined closeness (step S62 '). For example, if the frequency difference is diff_freq and a predetermined closeness between the pitch of the input sound and the reference sound is a, it is determined whether or not | diff_freq | ≦ a.

When it is determined that the pitch of the input sound and the pitch of the reference sound are closer than a predetermined closeness, the light emission color determination unit 9 sets the flag G_flg = 1 and uses the flag G_flg = 1 as the light emission color information. This is sent to the brightness control unit 5B (step S63).
If it is not determined that the pitch of the input sound and the pitch of the reference sound are closer than a predetermined closeness, the light emission color determination unit 9 does not change the value of the flag G_flg = 0, and the flag G_flg = 0 is sent to the luminance control unit 5B as the emission color information.

[Fourth embodiment]
The tuning display according to the fourth embodiment is inputted with the light emission color of the light emitting element when the pitch of the input sound is the same as the reference pitch, similarly to the tuning display according to the third embodiment. In the embodiment, the light emitting color of the light emitting element when the pitch of the sound is higher than the pitch of the reference sound is different from the light emitting color of the light emitting element when the pitch of the input sound is lower than the pitch of the reference sound. is there.

  The tuning indicator according to the fourth embodiment includes a light emission color determination unit 9B as illustrated in FIG. The light emitting element 6 </ b> A includes two light emitting elements having different emission colors, a first light emitting element 61 and a second light emitting element 62. The luminance control unit 5C includes a first luminance control unit 53, a second luminance control unit 57, an average luminance determination unit 51, and an amplitude determination unit 52 that control the luminances of the two light emitting elements. The tuning display according to the fourth embodiment is different from the tuning display 100 according to the first and second embodiments in these respects. Since the other points are the same as those in the first embodiment and the second embodiment, the redundant description is omitted.

The index calculated by the index calculation unit 3 is input to the modulation frequency determination unit 4 and the emission color determination unit 9B.
The modulation frequency determination unit 4 determines the modulation frequency using the index calculated by the index calculation unit 3 by the same method as described in the first embodiment, and sends it to the luminance control unit 5C. For example, when the index is a frequency difference, a modulation frequency having a higher frequency is determined as the frequency difference is larger.
The emission color determination unit 9B determines information (emission color information) regarding the emission color of the light emitting element 6A using the index calculated by the index calculation unit 3, and sends the information to the luminance control unit 5C. With reference to FIG. 12, the specific process of the light emission color determination part 9B is demonstrated. FIG. 12 is a flowchart illustrating the processing flow of the emission color determination unit 9B.

<Step S612>
The first determination unit 92 of the light emission color determination unit 9B is configured such that the input sound pitch and the reference sound pitch are far from a predetermined closeness, and the input sound pitch is higher than the reference sound height. It is determined whether or not (step S612). For example, when the index is a frequency difference (basic frequency of input sound−frequency of reference sound), the frequency difference is diff_freq, and a predetermined closeness between the pitch of the input sound and the height of the reference sound is set. If a, it is determined whether or not diff_freq ≧ a. It may be determined whether or not diff_freq> a.

<Step S613>
When the first determination unit 92 determines that the input sound pitch and the reference sound pitch are far from a predetermined closeness, and the input sound pitch is higher than the reference sound height. The luminescent color determining unit 9B sends information indicating that the pitch of the input sound is higher than the pitch of the reference sound as luminescent color information to the luminance control unit 5C (step S613).

<Step S614>
When the first determination unit 92 determines that the input sound pitch and the reference sound pitch are far from a predetermined closeness, and the input sound pitch is not higher than the reference sound height. The second determination unit 93 of the emission color determination unit 9B is configured such that the input sound pitch and the reference sound pitch are far from a predetermined closeness, and the input sound pitch is higher than the reference sound height. It is determined whether it is lower than (step S614). For example, when the index is a frequency difference (basic frequency of input sound−frequency of reference sound), the frequency difference is diff_freq, and a predetermined closeness between the pitch of the input sound and the height of the reference sound is set. If a, it is determined whether or not diff_freq ≦ −a. It may be determined whether or not diff_freq <−a.

<Step S615>
When the second determination unit 93 determines that the pitch of the input sound and the pitch of the reference sound are far from a predetermined closeness and that the pitch of the input sound is lower than the pitch of the reference sound The luminescent color determining unit 9B sends information indicating that the pitch of the input sound is lower than the pitch of the reference sound as luminescent color information to the luminance control unit 5C (step S615).

<Step S616>
When it is not determined by the second determination unit 93 that the input sound pitch and the reference sound pitch are far from a predetermined closeness, and the input sound pitch is lower than the reference sound height The luminescent color determining unit 9B sends information indicating that the pitch of the input sound matches the pitch of the reference sound to the luminance control unit 5C as luminescent color information (step S616).

The average luminance determination unit 51 of the luminance control unit 5C determines a higher average luminance as the input sound pitch is closer to the reference sound pitch by the same method as the average luminance determination unit 51 of the second embodiment.
The amplitude determination unit 52 of the luminance control unit 5C determines the smaller amplitude as the input sound level is closer to the reference sound level by the same method as the amplitude determination unit 52 of the second embodiment.
The determined average luminance and amplitude are sent to the first luminance control unit 53 and the second luminance control unit 57. Alternatively, the determined average luminance and amplitude may be sent only to the control unit that requires the average luminance and amplitude using the luminescent color information.

  The processing of the first luminance control unit 53 and the second luminance control unit 57 differs depending on the three types of emission color information. Hereinafter, the processes of the first luminance control unit 53 and the second luminance control unit 57 will be described for each of the three types of emission color information. In the following description, the average luminance determined by the average luminance determining unit 51 is “average luminance”, the amplitude determined by the amplitude determining unit 52 is “amplitude”, and the modulation frequency determined by the modulation frequency determining unit 4 is “modulation frequency”. And abbreviated respectively.

[When the input pitch is higher than the reference pitch]
The first luminance control unit 53, when the emission color information is information indicating that the pitch of the input sound is higher than the reference sound, is based on the amplitude and the modulation frequency with the average luminance as the center. The brightness of the first light emitting element 61 is controlled.
The second luminance control unit 57, when the emission color information is information indicating that the pitch of the input sound is higher than the pitch of the reference sound, the second light emitting element at a predetermined luminance (for example, maximum luminance). 62 is turned on. The second light emitting element 62 may be turned on with lower luminance as the pitch of the input sound is higher than the pitch of the reference sound.

[When the pitch of the input sound matches the pitch of the reference sound]
The first luminance control unit 53, when the emission color information is information indicating that the pitch of the input sound coincides with the reference sound, is based on the amplitude and the modulation frequency with the average luminance as the center. The brightness of the first light emitting element 61 is controlled. Alternatively, the first light emitting element 61 is turned on with a predetermined luminance (maximum luminance).
The second luminance control unit 57, when the emission color information is information indicating that the pitch of the input sound matches the reference sound, is based on the amplitude and the modulation frequency centering on the average luminance. The brightness of the second light emitting element 62 is controlled. Alternatively, the second light emitting element 62 is turned on with a predetermined luminance (maximum luminance).

[When the pitch of the input sound is lower than the pitch of the reference sound]
The first luminance control unit 53, when the emission color information is information indicating that the pitch of the input sound is lower than the pitch of the reference sound, the first light emitting element with a predetermined luminance (for example, maximum luminance). 61 is lit. The first light emitting element 61 may be turned on with lower luminance as the pitch of the input sound is lower than the pitch of the reference sound.
The second luminance control unit 57, when the emission color information is information indicating that the pitch of the input sound is lower than the reference sound, is based on the amplitude and the modulation frequency with the average luminance as the center. The brightness of the second light emitting element 62 is controlled.

In the fourth embodiment, the closer the input sound level is to the reference sound level, the higher the luminance (average luminance) of the light emitting element 6 and the smaller the change width (amplitude) of the luminance. Therefore, also according to the fourth embodiment, the luminance control unit 5C lights the light emitting element 6A with a luminance equal to or higher than a predetermined luminance when the input sound pitch and the reference sound pitch are closer than a predetermined proximity. At the same time, the brightness of the light emitting element 6A can be changed at the determined modulation frequency when the pitch of the input sound and the pitch of the reference sound are far from a predetermined closeness.
In the tuning display of the fourth embodiment, since the light emitting element 6A continuously changes as the pitch of the input sound approaches the pitch of the reference sound, tuning can be performed more naturally. There are advantages similar to those of the embodiment.

  In addition, according to the tuning indicator according to the fourth embodiment, the light emission color of the light emitting element when the pitch of the input sound matches the reference sound pitch, and the light emission of the light emitting element when the pitch does not match The color is different. For this reason, it is easy to determine whether or not the pitch of the input sound matches the pitch of the reference sound. In addition, the emission color of the light emitting element when the input pitch is higher than the reference pitch and the emission color of the light emitting element when the input pitch is lower than the reference pitch. Different. For this reason, it is easy to determine whether the input sound is shifted higher or lower than the reference sound.

  When the light emission color of the first light-emitting element 61 is red and the light emission color of the second light-emitting element 62 is green, the average luminance when the pitch of the input sound and the reference sound are closer than a predetermined distance is By determining the functions g and g ′ so that the maximum luminance and the amplitude are 0, respectively, as illustrated in FIGS. 13A and 13B, the light emitting element is controlled according to the pitch of the input sound and the reference sound. The brightness can be changed.

  In the fourth embodiment, the amplitude determining unit 52 is not always necessary, as in the second embodiment. The above-described process of providing the average luminance determining unit 51 without providing the amplitude determining unit 52 and increasing the luminance (average luminance) of the light emitting element 6 as the pitch of the input sound is closer to the reference sound. The luminance controller 5C also turns on the light emitting element 6A with a luminance equal to or higher than a predetermined luminance when the input sound pitch and the reference sound pitch are closer than a predetermined proximity. When the pitch of the generated sound and the pitch of the reference sound are far from a predetermined closeness, the luminance of the light emitting element 6A can be changed at the determined modulation frequency.

[Fifth Example]
The tuning display according to the fifth embodiment uses three first light emitting elements 61, second light emitting elements 62, and third light emitting elements 63 having different emission colors, so that the pitch of the input sound and the reference sound are high. The emission color of the light emitting element when they match, the emission color of the light emitting element when the input pitch is higher than the reference pitch, and the input pitch is higher than the reference pitch This is an example in which the light emission color of the light emitting element in the case of low is different.

  As illustrated in FIG. 14, the tuning indicator according to the fifth embodiment further includes a light emission color determination unit 9A, and the light emitting element 6B is referred to as a first light emitting element 61, a second light emitting element 62, and a third light emitting element 63. The luminance control unit 5D includes three light emitting elements having different emission colors. The luminance control unit 5D includes a first luminance control unit 54, a second luminance control unit 55, and a third luminance control unit 56 for controlling the luminance of the three light emitting elements. In the point provided, it differs from the tuning display by a 1st Example and a 2nd Example. About another point, since it is the same as that of the tuning display by 1st Example and 2nd Example, duplication description is abbreviate | omitted.

The index calculated by the index calculation unit 3 (in this example, the frequency difference between the input sound and the reference sound) is input to the modulation frequency determination unit 4 and the emission color determination unit 9, respectively.
The modulation frequency determination unit 4 determines the modulation frequency using the index calculated by the index calculation unit 3 by the same method as described in the first embodiment, and sends it to the luminance control unit 5D. For example, using the index calculated by the index calculation unit 3, the modulation frequency is determined to be lower as the pitch of the input sound is closer to the reference sound.

The light emission color determination unit 9A uses the index calculated by the index calculation unit 3 to determine information (light emission color information) for determining the light emission color of the light emitting element 6B, and sends the light emission color information to the luminance control unit 5D. send. With reference to FIG. 15, the specific process of the emission color determination unit 9A will be described. FIG. 15 is a flowchart illustrating the processing flow of the emission color determination unit 9A.
<Step S66>
The light emission color determination unit 9 sets the flag R_flg = 1 and the flag B_flg = 1 (step S66).

<Step S67>
The first determination unit 92 of the light emission color determination unit 9A is configured such that the input sound pitch and the reference sound pitch are far from a predetermined closeness, and the input sound pitch is higher than the reference sound height. It is determined whether or not (step S67). For example, when the index is a frequency difference (basic frequency of input sound−frequency of reference sound), the frequency difference is diff_freq, and a predetermined closeness between the pitch of the input sound and the height of the reference sound is set. If a, it is determined whether or not diff_freq ≧ a. It may be determined whether or not diff_freq> a.

<Step S68>
When the first determination unit 92 determines that the input sound pitch and the reference sound pitch are far from a predetermined closeness, and the input sound pitch is higher than the reference sound height. The emission color determination unit 9 sets the flag R_flg = 0 and sends the flag R_flg = 0 to the luminance control unit 5D as the first emission color information (step S68). In this case, the flag B_flg = 1 is not changed, and the flag B_flg = 1 is sent to the luminance control unit 5D as the second emission color information.

<Step S69>
When the first determination unit 92 determines that the input sound pitch and the reference sound pitch are far from a predetermined closeness, and the input sound pitch is not higher than the reference sound height. The second determination unit 93 of the light emission color determination unit 9 is configured such that the pitch of the input sound and the pitch of the reference sound are far from a predetermined closeness, and the pitch of the input sound is higher than the reference sound. It is determined whether it is lower than (step S69). For example, when the index is a frequency difference (basic frequency of input sound−frequency of reference sound), the frequency difference is diff_freq, and a predetermined closeness between the pitch of the input sound and the height of the reference sound is set. If a, it is determined whether or not diff_freq ≦ −a. It may be determined whether or not diff_freq <−a.

<Step S610>
When the second determination unit 93 determines that the pitch of the input sound and the pitch of the reference sound are far from a predetermined closeness and that the pitch of the input sound is lower than the pitch of the reference sound The emission color determination unit 9 sets the flag B_flg = 0 and sends the flag B_flg = 0 to the luminance control unit 5D as the second emission color information (step S610). In this case, without changing the value of the flag R_flg = 1, the flag R_flg = 1 is sent to the luminance control unit 5D as the first emission color information.

When it is not determined by the second determination unit 93 that the input sound pitch and the reference sound pitch are far from a predetermined closeness, and the input sound pitch is lower than the reference sound height In this case, without changing the values of the flag R_flg = 1 and the flag B_flg = 1, the flag R_flg = 1 and the flag B_flg = 1 are sent to the luminance control unit 5D as the first emission color information and the second emission color information, respectively.
The first luminance control unit 54 of the luminance control unit 5D controls the luminance of the first light emitting element 61 based on the modulation frequency determined by the modulation frequency determination unit 4 in the same manner as the luminance control unit 5 of the first embodiment. . For example, if the modulation frequency is 0, the first light emitting element 61 is turned on with a predetermined luminance (for example, maximum luminance). If the modulation frequency is not 0, the luminance of the first light emitting element 61 is changed at the modulation frequency.

The second luminance control unit 55 of the luminance control unit 5D controls the luminance of the second light emitting element 62 based on the value of the flag R_flg that is the first emission color information. For example, if R_flg = 0, the second light emitting element 62 is turned off, and if R_flg = 1, the second light emitting element 62 is turned on with a predetermined luminance (for example, maximum luminance).
The third luminance control unit 56 of the luminance control unit 5D controls the luminance of the second light emitting element 62 based on the value of the flag B_flg that is the second emission color information. For example, if B_flg = 0, the third light emitting element 63 is turned off, and if B_flg = 1, the third light emitting element 63 is turned on with a predetermined luminance (for example, maximum luminance).

Accordingly, for example, when the emission color of the first light-emitting element 61 is red, the emission color of the second light-emitting element 62 is green, and the emission color of the third light-emitting element is blue, the input is performed as illustrated in FIG. The luminance and emission color of the light emitting element can be changed according to the pitch of the sound and the pitch of the reference sound.
According to the tuning display according to the fifth embodiment, the emission color of the light emitting element when the input pitch and the reference tone match, and the emission color of the light emitting element when they do not match, Is different. For this reason, it is easy to determine whether or not the pitch of the input sound matches the pitch of the reference sound. In addition, the emission color of the light emitting element when the input pitch is higher than the reference pitch and the emission color of the light emitting element when the input pitch is lower than the reference pitch. Different. For this reason, it is easy to determine whether the input sound is shifted higher or lower than the reference sound.

[Sixth embodiment]
As in the tuning display according to the fifth embodiment, the tuning display according to the sixth embodiment uses three light emitting elements having different emission colors, and the pitch of the input sound matches the pitch of the reference sound. If the light emission color of the light emitting element and the input sound pitch is higher than the reference sound pitch, the light emission color of the light emitting element and the input sound pitch is lower than the reference sound pitch This is an example in which the emission color of the light emitting element is different.

  The tuning indicator according to the sixth embodiment includes a light emission color determination unit 9B as illustrated in FIG. The light emitting element 6 </ b> B includes three light emitting elements having different emission colors such as a first light emitting element 61, a second light emitting element 62 and a third light emitting element 63. The luminance control unit 5E also controls a luminance of the three light emitting elements, a first luminance control unit 53, a second luminance control unit 57, a third luminance control unit 58, an average luminance determination unit 51, and an amplitude determination unit 52. Is provided. The tuning display according to the sixth embodiment is different from the tuning display 100 according to the first and second embodiments in these respects. Since the other points are the same as those in the first embodiment and the second embodiment, the redundant description is omitted.

The index calculated by the index calculation unit 3 is input to the modulation frequency determination unit 4 and the emission color determination unit 9B.
The modulation frequency determination unit 4 determines the modulation frequency using the index calculated by the index calculation unit 3 by the same method as described in the first embodiment, and sends it to the luminance control unit 5E. For example, when the index is a frequency difference, a modulation frequency having a higher frequency is determined as the frequency difference is larger.

  The light emission color determination unit 9B determines information (light emission color information) related to the light emission color of the light emitting element 6A using the index calculated by the index calculation unit 3 by the same method as described in the fourth embodiment. To the brightness controller 5E. That is, the light emission color determination unit 9B performs the processing illustrated in FIG. 12 so that the input sound pitch is higher than the reference sound height according to the input sound pitch and the reference sound pitch. Information indicating that the pitch is high, information indicating that the pitch of the input sound matches the pitch of the reference sound, or information indicating that the pitch of the input sound is lower than the pitch of the reference sound Is sent to the brightness controller 5E.

The average luminance determination unit 51 of the luminance control unit 5E determines a higher average luminance as the input sound pitch is closer to the reference sound pitch by the same method as the average luminance determination unit 51 of the second embodiment.
The amplitude determination unit 52 of the brightness control unit 5E determines a smaller amplitude as the input sound pitch is closer to the reference sound pitch by the same method as the amplitude determination unit 52 of the second embodiment.
The determined average luminance and amplitude are sent to the first luminance control unit 53, the second luminance control unit 57, and the third luminance control unit 58. Alternatively, the determined average luminance and amplitude may be sent only to the control unit that requires the average luminance and amplitude using the luminescent color information.

The processes of the first luminance control unit 53, the second luminance control unit 57, and the third luminance control unit 58 differ depending on the three types of emission color information. Hereinafter, the processes of the first luminance control unit 53, the second luminance control unit 57, and the third luminance control unit 58 will be described by classifying the three types of emission color information. In the following description, the average luminance determined by the average luminance determining unit 51 is “average luminance”, the amplitude determined by the amplitude determining unit 52 is “amplitude”, and the modulation frequency determined by the modulation frequency determining unit 4 is “modulation frequency”. And abbreviated respectively.
The processing of the first luminance control unit 53 and the second luminance control unit 57 is the same as the processing of the first luminance control unit 53 and the second luminance control unit 57 described in the fourth embodiment. The sixth embodiment differs from the fourth embodiment in that the third luminance control unit performs the following processing in accordance with the three types of emission color information.

[When the input pitch is higher than the reference pitch]
The first luminance control unit 53, when the emission color information is information indicating that the pitch of the input sound is higher than the reference sound, is based on the amplitude and the modulation frequency with the average luminance as the center. The brightness of the first light emitting element 61 is controlled.
The second luminance control unit 57, when the emission color information is information indicating that the pitch of the input sound is higher than the pitch of the reference sound, the second light emitting element at a predetermined luminance (for example, maximum luminance). 62 is turned on. The second light emitting element 62 may be turned on with lower luminance as the pitch of the input sound is higher than the pitch of the reference sound.
The third luminance control unit 58 has a predetermined luminance (for example, maximum luminance) with a predetermined luminance (for example, maximum luminance) when the emission color information is information indicating that the pitch of the input sound is higher than the pitch of the reference sound. 63 is lit. The third light emitting element 63 may be turned on with lower luminance as the pitch of the input sound is higher than the pitch of the reference sound.

[When the pitch of the input sound matches the pitch of the reference sound]
The first luminance control unit 53, when the emission color information is information indicating that the pitch of the input sound coincides with the reference sound, is based on the amplitude and the modulation frequency with the average luminance as the center. The brightness of the first light emitting element 61 is controlled. Alternatively, the first light emitting element 61 is turned on with a predetermined luminance (for example, maximum luminance).
The second luminance control unit 57, when the emission color information is information indicating that the pitch of the input sound matches the reference sound, is based on the amplitude and the modulation frequency centering on the average luminance. The brightness of the second light emitting element 62 is controlled. Alternatively, the second light emitting element 62 is turned on with a predetermined luminance (for example, maximum luminance).
The third luminance control unit 58, when the emission color information is information indicating that the pitch of the input sound matches the pitch of the reference sound, is based on the amplitude and the modulation frequency with the average luminance as the center. The brightness of the third light emitting element 63 is controlled. Alternatively, the third light emitting element 63 is turned on with a predetermined luminance (for example, maximum luminance).

[When the pitch of the input sound is lower than the pitch of the reference sound]
The first luminance control unit 53, when the emission color information is information indicating that the pitch of the input sound is lower than the pitch of the reference sound, the first light emitting element with a predetermined luminance (for example, maximum luminance). 61 is lit. The first light emitting element 61 may be turned on with lower luminance as the pitch of the input sound is lower than the pitch of the reference sound.
The second luminance control unit 57, when the emission color information is information indicating that the pitch of the input sound is lower than the pitch of the reference sound, the second light emitting element with a predetermined luminance (for example, maximum luminance). 62 is turned on. The second light emitting element 62 may be turned on with lower luminance as the input sound level is lower than the reference sound level.
The third luminance control unit 58, based on the amplitude and the modulation frequency, centering on the average luminance, when the emission color information is information indicating that the pitch of the input sound is lower than the pitch of the reference sound. The brightness of the third light emitting element 63 is controlled.

  In the sixth embodiment, the closer to the input sound level and the reference sound level, the higher the luminance (average luminance) of the light emitting element 6, and the smaller the change width (amplitude) of the luminance. Therefore, also in the sixth embodiment, the luminance control unit 5E lights the light emitting element 6B with a luminance equal to or higher than a predetermined luminance when the input sound pitch and the reference sound pitch are closer than a predetermined proximity. At the same time, the brightness of the light emitting element 6B can be changed at the determined modulation frequency when the pitch of the input sound and the pitch of the reference sound are far from a predetermined closeness.

  In the tuning display of the sixth embodiment, the light emitting element 6A continuously changes as the pitch of the input sound approaches the pitch of the reference sound, so that tuning can be performed more naturally. There are advantages similar to those of the embodiment.

  Further, according to the tuning indicator according to the sixth embodiment, the light emission color of the light emitting element when the pitch of the input sound matches the pitch of the reference sound and the light emission of the light emitting element when the pitch does not match The color is different. For this reason, it is easy to determine whether or not the pitch of the input sound matches the pitch of the reference sound. In addition, the emission color of the light emitting element when the input pitch is higher than the reference pitch and the emission color of the light emitting element when the input pitch is lower than the reference pitch. Different. For this reason, it is easy to determine whether the input sound is shifted higher or lower than the reference sound.

  The light emission color of the first light-emitting element 61 is red, the light emission color of the second light-emitting element 62 is green, and the light emission color of the third light-emitting element 63 is blue. When the functions g and g ′ are determined so that the average luminance becomes the maximum luminance and the amplitude becomes 0, respectively, when approaching closer than closeness, as shown in FIG. The luminance of the light emitting element can be changed according to the pitch of the sound.

  In the sixth embodiment as well, the amplitude determination unit 52 is not always necessary, as in the second embodiment. The amplitude determining unit 52 is not provided, but only the average luminance determining unit 51 is provided, and the luminance (average luminance) of the light emitting element 6 is increased as the input sound level is closer to the reference sound level. Also by performing the processing, the luminance control unit 5E turns on the light emitting element 6B with a luminance equal to or higher than a predetermined luminance when the pitch of the input sound and the height of the reference sound are closer than the predetermined proximity, When the pitch of the input sound and the pitch of the reference sound are far from a predetermined closeness, the luminance of the light emitting element 6B can be changed at the determined modulation frequency.

[Modifications, etc.]
The present invention can be applied not only to sound but also to periodic signals. That is, according to the present invention, the height of the fundamental frequency of the input predetermined signal and the proximity of the height of the predetermined reference frequency may be visually expressed.
As an index, it is possible to use a feature amount representing the closeness of the pitch of any input sound other than the frequency difference and the reference sound. For example, a feature amount represented by a frequency ratio such as a cent may be used.

Instead of the modulation frequency, a feature amount represented by a frequency ratio such as a cent may be used.
The average luminance determining unit 51 and the amplitude determining unit 52 may determine the average luminance and the amplitude using a feature amount other than the modulation frequency. That is, for example, using the index calculated by the index calculation unit 3, the average luminance determination unit 51 calculates a higher average luminance as the input sound level is closer to a predetermined reference sound level, and the amplitude determination unit 52. May be determined such that the smaller the pitch of the input sound is closer to the predetermined reference sound, the smaller the amplitude.

  The reference sound determination unit 2 is not always necessary. For example, the reference sound receiving unit 10 may be provided so that the user can select any reference sound. The selected reference sound is input to the index calculation unit 3, and the index calculation unit 3 calculates the index based on the selected reference sound. Other processes are the same as those described in the above embodiment.

The pitch name display 7 and the pitch name display 8 are not necessarily required.
The tuning display according to the present invention may be used alone as a tuning device, or may be provided in an electronic music related device such as a guitar amplifier.
When the above configuration is realized by a computer, the processing contents of the functions that each device should have are described by a program. The processing functions are realized on the computer by executing the program on the computer.

The program describing the processing contents can be recorded on a computer-readable recording medium. The computer-readable recording medium may be any medium such as a magnetic recording device, an optical disk, a magneto-optical recording medium, or a semiconductor memory. Specifically, for example, the magnetic recording device may be a hard disk device or a flexible Discs, magnetic tapes, etc. as optical discs, DVD (Digital Versatile Disc), DVD-RAM (Random Access Memory), CD-ROM (Compact Disc Read Only Memory), CD
-R (Recordable) / RW (ReWritable), etc., MO (Magneto-Optical disc), etc. as a magneto-optical recording medium, EEP-ROM (Electronically Erasable and Programmable-Read Only Memory), etc. as a semiconductor memory it can.

  The program is distributed by selling, transferring, or lending a portable recording medium such as a DVD or CD-ROM in which the program is recorded. Furthermore, the program may be distributed by storing the program in a storage device of the server computer and transferring the program from the server computer to another computer via a network.

  As an execution form different from the above-described embodiment, the computer may read the program directly from the portable recording medium and execute processing according to the program. Each time is transferred, the processing according to the received program may be executed sequentially. Also, the program is not transferred from the server computer to the computer, and the above-described processing is executed by a so-called ASP (Application Service Provider) type service that realizes the processing function only by the execution instruction and result acquisition. It is good. Note that the program in this embodiment includes information that is used for processing by an electronic computer and that conforms to the program (data that is not a direct command to the computer but has a property that defines the processing of the computer).

In this embodiment, the present apparatus is configured by executing a predetermined program on a computer. However, at least a part of these processing contents may be realized by hardware.
In addition, the various processes described above are not only executed in time series according to the description, but may be executed in parallel or individually according to the processing capability of the apparatus that executes the processes or as necessary. Needless to say, other modifications are possible without departing from the spirit of the present invention.

The figure which illustrates the function structure of the tuning display 100 by a 1st Example. The flowchart which illustrates the flow of a process of the tuning display by this invention. The figure which illustrates the relationship between a frequency difference and a modulation frequency. The example of a display of the tuning display 100 of a 1st Example. The figure which illustrates the function structure of the brightness | luminance control part 5A of a 2nd Example. The figure which illustrates the relationship between a modulation frequency and average brightness | luminance. The example of a tuning display of a 2nd Example. The figure which illustrates a part of functional structure of the tuning indicator of a 3rd Example. 6 is a flowchart illustrating a process flow of the light emission color determination unit 9; FIG. 10A is a display example of the tuning display of the third embodiment. 10B is a display example of each light emitting element for performing the display shown in FIG. 10A. The figure which illustrates a part of functional structure of the tuning display of 4th Example. The flowchart figure which illustrates the flow of a process of the luminescent color determination part 9B. FIG. 13A is a display example of the tuning display of the fourth embodiment. FIG. 13B is a display example of each light emitting element for performing the display shown in FIG. 13A. The figure which illustrates a part of functional structure of the tuning indicator of 5th Example. The flowchart figure which illustrates the flow of a process of the luminescent color determination part 9A. FIG. 16A is a display example of the tuning display of the fifth embodiment. FIG. 16B is a display example of each light emitting element for performing the display shown in FIG. 16A. The figure which illustrates a part of functional structure of the tuning indicator of 6th Example. FIG. 18A is a display example of the tuning indicator of the sixth embodiment. 18B is a display example of each light-emitting element for performing the display shown in FIG. 18A.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Basic frequency extraction part 2 Reference sound determination part 3 Index calculation part 4 Modulation frequency determination part 5 Brightness control part 5A Brightness control part 5B Brightness control part 5C Brightness control part 5D Brightness control part 5E Brightness control part 6 Light emitting element 6A Light emitting element 6B Light emitting element 7 Pitch name display control unit 8 Pitch name display 9 Emission color determination unit 9A Emission color determination unit 9B Emission color determination unit 51 Average luminance determination unit 52 Amplitude determination unit 53 Control unit 53 First luminance control unit 54 First luminance Control unit 55 Second luminance control unit 56 Third luminance control unit 57 Second luminance control unit 58 Third luminance control unit 61 First light emitting element 62 Second light emitting element 63 Third light emitting element 91 Determination unit 92 First determination unit 93 Second judgment unit 100 Tuning indicator

Claims (8)

A light emitting means;
Fundamental frequency extraction means for extracting the fundamental frequency of the input sound;
Using the extracted fundamental frequency, an index calculating means for calculating an index representing the closeness between the input sound pitch and a predetermined reference sound pitch;
Modulation frequency determination means for determining a modulation frequency having a lower frequency as the input sound pitch is closer to a predetermined reference sound height, using the calculated index indicating sound proximity;
When the pitch of the input sound and the predetermined reference sound are closer than a predetermined closeness, the light emitting means is turned on at a luminance equal to or higher than a predetermined luminance. Otherwise, the determined modulation frequency is Brightness control means for changing the brightness of the light emitting means,
Equipped with a,
The brightness control means includes an average brightness determining means for determining a higher average brightness as the input sound level is closer to a predetermined reference sound level, and the determination is performed with the determined average brightness as a center. Means for changing the luminance of the light emitting means at a modulation frequency;
The brightness control means further includes amplitude determining means for determining an amplitude that is smaller as the pitch of the input sound is closer to a predetermined reference sound, and is determined based on the determined amplitude. A means for changing the luminance of the light emitting means at the determined modulation frequency with the average luminance as a center.
Tuning indicator characterized by that. The tuning indicator according to claim 1 ,
The emission color of the light emitting means when the pitch of the input sound and the predetermined reference sound are closer than the predetermined proximity, and the input sound pitch and the predetermined reference sound are higher than the predetermined proximity. Is different from the emission color of the light emitting means when the distance is
Tuning indicator characterized by that. In the tuning indicator according to claim 1 or 2 ,
When the pitch of the input sound is higher than the predetermined reference sound and the pitch of the input sound is higher than the predetermined reference sound, , The emission color of the light emitting means is different when the pitch of the input sound is lower than the predetermined reference pitch,
Tuning indicator characterized by that. The tuning indicator according to any one of claims 1 to 3 ,
The maximum value of the modulation frequency determined by the modulation frequency determination means does not exceed a frequency at which a human can feel a change in luminance.
Tuning indicator characterized by that. The tuning indicator according to any one of claims 1 to 4 ,
Using the extracted fundamental frequency, selecting a scale sound closest to the input sound, and using the selected scale sound as the predetermined reference sound, a reference sound determining means;
A rhythm indicator characterized by comprising. A fundamental frequency extraction step for extracting the fundamental frequency of the input sound;
An index calculating step for calculating an index representing the proximity of the input sound pitch and a predetermined reference sound height using the extracted fundamental frequency;
A modulation frequency determination step for determining a modulation frequency having a lower frequency as the input sound pitch is closer to a predetermined reference sound height, using the calculated index indicating sound proximity;
If the pitch of the input sound and the pitch of the predetermined reference sound are closer than the predetermined proximity, the light emitting means is turned on at a luminance equal to or higher than the predetermined luminance, and otherwise, at the modulation frequency determined above. A luminance control step for changing the luminance of the light emitting means;
Equipped with a,
The luminance control step includes an average luminance determining step for determining an average luminance that is higher as the pitch of the input sound is closer to a predetermined reference sound, and is determined with the determined average luminance as the center. Changing the luminance of the light emitting means at a modulation frequency,
The brightness control step further includes an amplitude determination step for determining an amplitude that is smaller as the pitch of the input sound is closer to a predetermined reference sound, and is determined based on the determined amplitude. A step of changing the luminance of the light emitting means at the determined modulation frequency around the average luminance.
Tuning display how to, characterized in that. Tuning display program for causing a computer to function as each means of the tuning indicator according to any one of claims 1 to 5. A computer-readable recording medium on which the tuning display program according to claim 7 is recorded.

Images