JP2013160986A - Musical sound visualizing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a musical sound visualizing device which allows scales based on temperaments in musical sounds to be intelligibly and visually recognized.SOLUTION: The musical sound visualizing device includes: a spiral staircase-shaped light emitting unit 40 which includes a plurality of luminous bodies arranged like a spiral staircase around a center pole brace 42; and an emission control unit 20 which controls light emission of the spiral staircase-shaped light emitting unit 40. In the spiral staircase-shaped light emitting unit, a plurality of unit spiral light emitting groups 44 each of which comprises 12 luminous bodies as a group arranged so as to form one turn of a helix are arrayed along the center pole brace. The emission control unit includes a storage part 26 and an analysis part 24 which calculates a frequency spectrum from an input musical sound information digital signal by using Fourier transform technique. The storage part includes a scale frequency assignment table 28 assigning frequencies corresponding to temperament scales to respective luminous bodies. The emission control unit causes luminous bodies assigned to frequencies to emit light on the basis of the frequency spectrum calculated by the analysis part and the scale frequency assignment table.

Description

The present invention relates to a musical sound visualization apparatus that visualizes musical sounds to be played, musical sounds recorded on a recording medium, and the like using a light emitter.

Conventionally, the equal temperament is a scale generally used as a musical scale. Then, the equal temperament, the sound in an octave, in which the frequency ratio of the sound next to each other is divided into ¹² √2 (= 2 ^1/12) become as in 12 scales of. For example, the frequency of the A tone as a reference tone in the orchestra tuning is 440 Hz, the frequency of the A ^♯ sound next on the A tone is substantially 466.2Hz in relation 440 Hz × ¹² √2, A ^♯ frequency over next B tone sounds has a substantially 493.2Hz in relation 466.2Hz × ¹² √2.

As an apparatus for visualizing such a musical sound, for example, there is one disclosed in Patent Document 1 below.

Special table 2010-504539

According to Patent Document 1, a digital music input device 6020, a score input device 6060 for inputting a score 6040, a processing device 6080, a display 6100, a user input device such as a keyboard 6120 and a mouse 6140, a printer device 6160, and one Or a first subsystem 6010 comprising a plurality of speakers 6200, which are coupled to allow the devices to input music or other speech, and music notation or other phonetic notation to the processing device. (See paragraph (0006)). The system 6000 can display the diagram described in Patent Document 1 on the display 6100 at the same time as the keyboard is played.

However, according to the system 6000 of Patent Document 1, when a diagram in which lines are complicatedly interlaced as shown in FIG. 58 of Patent Document 1, for example, a musical sound is understood by a person viewing the display. There was a problem that it might be difficult.

Therefore, the present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide a musical sound visualization apparatus in which a scale based on an equal temperament in a musical sound can be easily understood and visually recognized.

  The invention of claim 1 includes a spiral staircase light emitting portion including a plurality of light emitters arranged in a spiral staircase shape around a central support column, and a light emission control unit that controls light emission of the spiral staircase light emitting portion, The spiral staircase light emitting unit includes twelve light emitters as one group, and the unit spiral light emitter group arranged in such a manner that the twelve light emitters form one round of the spiral. The light emission control unit includes a storage unit and an analysis unit that calculates a frequency spectrum using a Fourier transform method from the input musical sound information digital signal, and the storage unit includes: A scale frequency allocation table in which a frequency corresponding to an average scale is allocated to each of the light emitters, and the light emission control unit includes the frequency spectrum and the scale frequency allocation table calculated by the analysis unit. Hazuki, wherein causing the light emitter to emit light according to the frequency of the frequency spectrum, a musical tone visualizing apparatus.

According to a second aspect of the present invention, in the musical sound visualization apparatus according to the first aspect, each of the light emitters includes a plurality of small light emitters arranged in a substantially horizontal direction from the central support column, and the storage unit includes: An amplitude allocation table in which the small light emitters are allocated according to the amplitude of the frequency spectrum, the light emission control unit based on the amplitude of the frequency spectrum and the amplitude allocation table, according to the amplitude of the frequency spectrum A small light emitter emits light.

The invention according to claim 3 is the musical sound visualization apparatus according to claim 1 or 2, wherein the musical sound visualization device is a keyboard corresponding to the average temperament scale, and each of the healthy boards includes a light emitting healthy board instrument including a light emitter, The storage unit includes a frequency light emitter assignment table in which a frequency corresponding to the average temperament scale is assigned to each light emitter, and the light emission control unit includes the frequency spectrum calculated by the analysis unit and the frequency spectrum The light emitter is caused to emit light according to the frequency of the frequency spectrum based on a frequency light emitter assignment table.

According to a fourth aspect of the present invention, in the musical tone visualization apparatus according to any one of the first to third aspects, the light emission control unit includes an input unit that transmits the musical sound information digital signal.

According to a fifth aspect of the present invention, in the musical sound visualization apparatus according to any one of the first to fourth aspects, the input unit is configured to collect a musical sound to be played or sung, and from the sound collecting unit. And an AD converter for converting a musical tone analog signal into the musical tone information digital signal.

According to a sixth aspect of the present invention, in the musical sound visualization apparatus according to any one of the first to fifth aspects, the input unit includes a music recording medium reading device that reads a medium on which a musical sound information digital signal is recorded. To do.

According to the present invention, comprising: a spiral staircase light-emitting unit including a plurality of light emitters arranged in a spiral staircase shape around a central column; and a light emission control unit that controls light emission of the spiral staircase light-emitting unit, The spiral staircase-shaped light emitting unit includes twelve light emitters as one group, and the unit spiral light emitter group arranged in such a manner that the twelve light emitters form one round of the spiral. The light emission control unit includes a storage unit and an analysis unit that calculates a frequency spectrum using a Fourier transform method from the input musical sound information digital signal, and the storage units are respectively A scale frequency assignment table in which a frequency corresponding to an average temper scale is assigned to the light emitter, and the light emission control unit is based on the frequency spectrum calculated by the analysis unit and the scale frequency assignment table. Since the luminous body emits light according to the frequency of the frequency spectrum, the average temperament included in the music can be easily time-sequentially by visually recognizing the luminous body that emits light in the spiral staircase light-emitting section. Therefore, it is possible to provide a musical sound visualization device in which the scale based on the equal temperament in the musical sound can be easily understood and visually recognized.

Each of the light emitters includes a plurality of small light emitters arranged in a substantially horizontal direction from the central support column, and the storage unit has an amplitude to which the small light emitter is allocated according to the amplitude of the frequency spectrum. The light emission control unit is configured to cause the small light emitters to emit light according to the amplitude of the frequency spectrum based on the amplitude of the frequency spectrum and the amplitude allocation table. It is possible to provide a musical sound visualization apparatus that can easily grasp the scale and can easily grasp the sound volume of the average temperament scale.

In addition, the keyboard corresponds to the average temperament scale, and further includes a light emitting board instrument including a light emitter in each of the healthy boards, and the storage unit corresponds to the average temperament scale for each of the light emitters. A frequency light emitter assignment table to which a frequency to be assigned is assigned, and the light emission control unit, based on the frequency spectrum calculated by the analysis unit and the frequency light emitter assignment table, according to the frequency of the frequency spectrum. Since the instrument is configured to emit light, it is possible to play a musical sound by pressing the emitted healthy board, and to provide a musical sound visualization apparatus that can enjoy the performance.

In addition, since the light emission control unit includes an input unit that transmits the musical sound information digital signal, a musical sound visualization device with high practicality can be provided.

In addition, the input unit includes a sound collecting unit that collects musical sounds to be played or sung, and an AD conversion unit that converts a musical sound analog signal from the sound collecting unit into the musical sound information digital signal. Even if a musical tone is being played, the average temperament scale included in the musical tone can be visually recognized. Therefore, it is possible to provide a musical sound visualization apparatus that allows a person with hearing impairment to enjoy the musical tone being played.

In addition, since the input unit includes a music recording medium reading device that reads a medium on which a musical sound information digital signal is recorded, the average temperament included in the musical sound recorded on, for example, a music CD can be visually recognized. It is possible to provide a musical sound visualization device with high sound.

It is a block diagram explaining the musical tone visualization apparatus in 1st Embodiment of this invention. It is a perspective view explaining the spiral stair-like light emission part in 1st Embodiment of this invention. It is the figure which expanded a part of FIG. It is explanatory drawing of the example of the scale frequency allocation table in 1st Embodiment of this invention. It is explanatory drawing of the example of a frequency spectrum in 1st Embodiment of this invention. It is a block diagram explaining the modification of the musical tone visualization apparatus in 1st Embodiment of this invention. It is a perspective view explaining the light-emitting body in 2nd Embodiment of this invention. It is a block diagram explaining the musical tone visualization apparatus in 2nd Embodiment of this invention. It is explanatory drawing of the example of an amplitude allocation table in 2nd Embodiment of this invention. It is a perspective view explaining the light-emitting body in 2nd Embodiment of this invention. It is a block diagram explaining the musical tone visualization apparatus in 3rd Embodiment of this invention. It is a perspective view explaining the musical tone visualization apparatus in 3rd Embodiment of this invention. It is explanatory drawing of the example of a frequency light emitter allocation table in 3rd Embodiment of this invention.

Hereinafter, the musical sound visualization apparatus 10 according to the first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the musical sound visualization apparatus 10 according to the present embodiment includes an input unit 12, a light emission control unit 20, an LED controller 32, and a spiral staircase light emission unit 40.

First, the spiral staircase light emitting unit 40 that is a main part of the present embodiment will be described with reference to FIGS. 2 and 3. FIG. 3 is a diagram in which a part of FIG. 2 is stretched in the vertical direction.
As shown in FIG. 2, the spiral staircase light emitting unit 40 includes a central support column 42 and a plurality of unit spiral light emitter groups 44, 44,.

As shown in FIGS. 2 and 3, the center column 42 is made of, for example, a hollow cylindrical body, and opens a through hole (not shown) in which an LED light 48 as an edge light described later is disposed. Further, the central support column 42 accommodates an electric wire (not shown) for energizing the LED light 48 in its hollow portion. The central support column 42 is erected in the vertical direction, for example, with one end fixed on the base 43.
In addition, the center support | pillar is not limited to what is erected in the vertical direction as in the present embodiment, but may be disposed horizontally and supported at both ends, for example.

As shown in FIG. 3, one unit spiral light emitter group 44 includes 12 light emitters 46 a to 46 l.
As shown in FIG. 3, each of these light emitters 46a to 46l is formed by a substantially fan-shaped planar light source unit. More specifically, each of the light emitters 46a to 46l is formed with a fan angle of approximately 30 degrees, and as shown in FIG. 3, the LED light 48 described above is arranged in the vicinity of the main part of the fan.
The light emitter is not limited to the planar light source unit. For example, the light emitter is formed of a round bar light source unit, one end side of the round bar is connected to the side surface of the center column 42, and the LED light as an edge light is connected to the one end side May be arranged.

As shown in FIG. 3, the light emitters 46 a to 46 l formed in this way are supported by connecting the main portion 50 to the side surface of the central support column 42 with the plate surfaces thereof being substantially parallel. Specifically, the light emitter 46a is disposed at a predetermined position of the central support column 42, and then the light emitter 46b is located above the light emitter 46a and is viewed from the light emitter 46a in the plan view centering on the central support column 42. The main portion 50 of the fan is connected to and supported by the side surface of the central support column 42 at a position rotated approximately 30 degrees counterclockwise. The remaining light emitters 46c to 46l are arranged in the same manner.
That is, the twelve light emitters 46a to 46l are arranged in a spiral staircase around the central support column 42, and the twelve light emitters 46a to 46l are arranged so as to form one turn of the spiral. .
In other words, the twelve light emitters 46a to 46l forming the unit spiral light emitter group 44 are substantially equidistant from the bottom along the central support column 42, and at substantially equal angular intervals around the center support column 42 in plan view. It arrange | positions and it arrange | positions in the aspect which goes around the center support | pillar 42.

As shown in FIG. 2, the spiral staircase-like light emitting unit 40 of the present embodiment has the first group of unit spiral light emitter groups 44 arranged at the lowermost stage and the tenth group of unit spiral light emitter groups 44 at the uppermost stage. The unit spiral light emitter groups 44 are arranged in ten groups from the bottom to the top.
In this manner, the spiral staircase light emitting unit 40 includes 12 light emitters 46a to 46l as one group, and the 12 light emitters 46a to 46l are arranged in a form that forms one round of the spiral. A plurality of luminous body groups 44 are arranged along the central column 42.

Next, as shown in FIG. 1, the input unit 12 includes a sound collection unit 13, a mixing unit 15, and an AD conversion unit 18.
The sound collection unit 13 is formed by a plurality of microphones 14, 14 ′, 14 ″, collects musical sounds to be played or sung, and transmits the collected analog signals to a mixing unit 15 described later. The sound collection unit 13 of the present embodiment includes, for example, a high-frequency microphone 14, a mid-range microphone 14 ′, and a low-range microphone 14 ″.

Next, the mixing unit 15 includes, for example, a known analog mixer that adjusts the overall balance of the high range, the mid range, and the low range based on the analog signal, and is connected to the AD conversion unit 18. As shown in FIG. 1, the mixing unit 15 is connected to the speaker 16 so that the mixed musical sound is output from the speaker 16.

Next, the AD conversion unit 18 includes a known AD conversion circuit that converts an analog signal into a digital signal, and converts a musical tone information digital signal obtained by converting a musical tone analog signal such as a performance sound input from the mixing unit 15 into a digital signal. It transmits to the light emission control part 20.

Next, the light emission control unit 20 includes a main control unit 22, an analysis unit 24, and a storage unit 26, as shown in FIG.
The main control unit 22 includes a CPU and a working memory (not shown), and is connected to the AD conversion unit 18, the analysis unit 24, the storage unit 26, and the LED controller 32 as shown in FIG. The analysis unit 24, the storage unit 26, and the LED controller 32 are controlled according to the programmed program.

Next, the analysis unit 24 performs fast Fourier transform on each 2 ⁿ (2 n) samples of the input musical sound information digital signal as one block, and calculates a frequency spectrum in time series. A known FFT operation circuit and a memory (not shown) for temporarily storing the frequency spectrum are provided.
As described above, the analysis unit 24 is configured to calculate the frequency spectrum from the input musical sound information digital signal using the Fourier transform method.

Next, the storage unit 26 is formed by, for example, a known hard disk device. The storage unit 26 of the present embodiment includes a scale frequency allocation table 28 as shown in FIG.
As shown in FIG. 4, the scale frequency assignment table 28 includes a frequency corresponding to the average scale (hereinafter referred to as “average tempered frequency”) and the numbers of the unit spiral light emitter group 44 and the light emitters 46 a to 46 l. It is a corresponding table.
For example, as shown in FIG. 4, first, 12 average temperament frequencies 20.6 Hz, 21.8 Hz,..., 38.9 Hz forming the first octave are allocated to the first group of unit spiral light emitter groups 44. At that time, an average tempered frequency of 20.6 Hz corresponding to the E sound is assigned to the light emitter 46a, and an average tempered frequency of 21.8 Hz corresponding to the F sound is assigned to the light emitter 46b. In this way, twelve frequencies corresponding to the average frequency of the first octave are sequentially assigned to the first group of light emitters 46a to 46l.
Next, twelve average temperament frequencies 41.2 Hz, 43.7 Hz,..., 77.8 Hz, which form the second octave above the first octave, are emitted in the second group unit spiral light emission as described above. Assigned to the light emitters 46 a to 46 l of the body group 44.

Thus, as shown in FIG. 4, the scale frequency allocation table 28 of the present embodiment includes the average tempered frequencies from the first octave to the tenth octave (frequency 10548.1 Hz to 19912.1 Hz) and the light emitters. It consists of a corresponding table. Note that the scale frequency assignment table 28 of the present embodiment includes an average temperament frequency in a range of approximately 20 Hz to 20,000 Hz, which is a frequency in a human audible range.

Next, the LED controller 32 includes an LED driver circuit that controls the LED current of the LED light 48 included in the above-described light emitters 46a to 46l, and the light emitters 46a to 46l are turned on by an instruction from the main control unit 22. / OFF can be set.

The operation of the musical tone visualization apparatus 10 of the present embodiment configured as described above will be described.
For example, when the musical performance starts, the musical sound analog signal collected by the sound collecting unit 13 is adjusted by the mixing unit 15 and then transmitted to the AD conversion unit 18. Next, the AD conversion unit 18 that has received the musical tone analog signal performs AD conversion of the musical tone analog signal into a musical tone information digital signal and transmits it to the main control unit 22.

Next, the main control unit 22 transmits the musical sound information digital signal to the analysis unit 24, for example, every 1024 samples as one block. Receiving the musical sound information digital signal, the analyzing unit 24 performs FFT conversion on the musical sound information digital signal to calculate a frequency spectrum, and transmits the frequency spectral information to the main control unit 22.

Receiving this frequency spectrum information, the main control unit 22 extracts frequency spectrum information of a frequency equal to the average tempered frequency based on the frequency spectrum information and, for example, the average tempered frequency in the scale frequency assignment table 28. Then, the main control unit 22 transmits to the LED controller 32 an instruction to cause the light emitters 46a to 46l assigned to the extracted frequency (average frequency) from the extracted frequency spectrum information and the scale frequency assignment table 28. To do.

When the main control unit 22 extracts a frequency equal to the average tempered frequency, the main control unit 22 focuses on the average tempered frequency that could not be extracted even if the spectrum corresponding to the average tempered frequency could not be extracted. When a spectrum stands in the predetermined frequency range, the frequency at which the spectrum stands may be extracted as an average frequency that could not be extracted.
At this time, for example, since the limit at which a person can distinguish the scale difference is about 5 cents, a frequency range of 5 cents may be used as the predetermined frequency range. Here, cent is a well-known unit used to express a minute pitch, and one octave is 1200 cents.

Here, the frequency spectrum extracted by the main control unit 22 will be described with reference to FIG. FIG. 5A shows an example at t ₀ , FIG. 5B shows an example at t ₁ that follows t ₀ , and FIG. 5C shows an example at t ₂ that follows t ₁ . In FIG. 5, f ₁ = 20.6 Hz, f ₂ = 21.8 Hz, and f ₁₂₀ = 19912.1 Hz.
According to FIG. 5 (a), _{t 0} at _{f 52 (= 392.0Hz) ~f 60} (= 622.3Hz) to start the spectrum, respectively, according to FIG. 5 (b), _{t 1} at _{f 56} ( = 493.9 Hz) to f ₆₀ (622.3 Hz), respectively, and according to FIG. 5 (c), the spectrum is f ₄₀ (196.0 Hz) to f ₄₄ (= 246.9 Hz) at t _2. You can see that
In FIG. 5, the vertical axis represents the spectrum amplitude, and this point will be described in the second embodiment.

Here, the description returns to the operation description.
The main control unit 22 first illuminant corresponding to _f 52 _{~f 60} of _{t 0} at the fifth group of the unit helical lighting cluster 44 based on the frequency spectrum and scale frequency allocation table 28 extracted in 46d~ An instruction to emit light 46l is transmitted to the LED controller 32.
Next, the main control unit 22 illuminates 46 h to ₄₆ f corresponding to f _{56 to} f ₆₀ in the fifth unit spiral luminous body group 44 based on the extracted frequency spectrum at t ₁ and the scale frequency assignment table 28. An instruction to emit light 46l is transmitted to the LED controller 32.
The main control unit 22, emitting a light emitter 46d~46h corresponding to _f 40 _{~f 44} of the unit helical lighting clusters 44 of the fourth group on the basis of the frequency spectrum and scale frequency allocation table 28 extracted o'clock _{t 2} The instruction to transmit is transmitted to the LED controller 32.
In this way, the light emission control unit 20 causes the spiral staircase light emitting unit 40 to emit light in time series.

As a musical sound visualization device 10a as a modification of the musical sound visualization device 10 of the present embodiment, as shown in FIG. 6, a musical sound information digital signal such as a music CD is recorded instead of the input unit 12 described above. A configuration may be adopted in which a tone recording medium reading device that reads a tone information digital signal from a medium is provided as the input unit 23. This is because the spiral staircase light emitting unit 40 can emit light based on a musical sound information digital signal such as music recorded on the medium.

As described above, according to the musical sound visualization apparatus 10 of the present embodiment, the progression of the average temperament in the musical sound being played can be easily visually recognized through the spiral stair-like light emitting unit 40, so that it is difficult for the hearing impaired. But you can expect to enjoy playing with your eyes. In addition, by installing the musical sound visualization apparatus 10 of the present embodiment in a live venue or the like, it is possible to expect an effect that the mood of the live participant is excited.

Next, a musical sound visualization apparatus 10b according to a second embodiment of the present invention will be described with reference to FIGS. 5 and 7 to 10.
The main difference from the musical sound visualization apparatus 10 of the first embodiment is that, as shown in FIG. 7, each light emitter is composed of a plurality of small light emitters, and as shown in FIG. 26 is a point having an amplitude allocation table in which small light emitters are allocated according to the amplitude of the frequency spectrum. The same equipment and members as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and description thereof is omitted.
FIG. 7A shows one light emitter 60, and FIG. 7B illustrates a state in which the light emitters 60 are arranged in a spiral step shape.

As shown in FIG. 7A, the light emitter 60 of the present embodiment is substantially fan-shaped as a whole, and has a fan angle of approximately 30 degrees. In addition, as shown in FIG. 7A, the light emitter 60 of the present embodiment is composed of small light emitters 62 a to 62 j provided with LED lights 49. More specifically, as shown in FIG. 7A, the small light emitters 62a to 62j are arranged in such a manner that the radial direction of the fan is divided into approximately 10 equal parts, for example. That is, the light emitter 60 is configured by a plurality of small light emitters 62a to 62j arranged in a horizontal direction from the central support column 42 in the horizontal direction.
Then, as shown in FIG. 7A, the light emitter 60 is supported by connecting a main portion 51 at a predetermined position on the side surface of the central column 42 with the plate surface thereof substantially parallel.

As shown in FIG. 7B, the light emitter 60 formed in this way is arranged in a spiral staircase shape around the central support column 42 as in the first embodiment.
It should be noted that 12 light emitters 60 form one group of unit spiral light emitter groups described above, and 10 units from the first unit spiral light emitter group in the lowermost stage to the unit spiral light emitter group in the uppermost tenth group. The unit spiral illuminant group is arranged along the central support column 42 in the same manner as in the first embodiment. In this way, the spiral staircase light emitting portion 40a of the present embodiment is formed.

Next, the musical sound visualization apparatus 10b of this embodiment has an amplitude allocation table 30 in the storage unit 26 as shown in FIG. As shown in FIG. 9, the amplitude allocation table 30 is a table in which amplitude levels are associated with the small light emitters 62a to 62j described above. Here, the amplitude level means a numerical value corresponding to the height of the frequency spectrum. In the present embodiment, the amplitude level is represented, for example, in 10 steps as indicated by the vertical axis of the graph of FIG. Referring to FIG. 5A, for example, the amplitude level of the spectrum of f ₅₂ is “1”, and for example, the amplitude level of f ₅₄ is “10”.
Thus, the memory | storage part 26 becomes a structure which has an amplitude allocation table which allocated small light-emitting body 62a-62j according to the amplitude of the frequency spectrum.

Next, the operation of the musical tone visualization apparatus 10b of this embodiment will be described.
Based on the frequency spectrum and scale frequency assignment table 28 extracted in the same manner as in the first embodiment, the main control unit 22 transmits to the LED controller 32 an instruction to cause the light emitter 60 assigned to the extracted frequency to emit light.

Further, the main control unit 22 extracts the amplitude level of the spectrum based on the extracted frequency spectrum. Then, the main control unit 22 transmits an instruction to cause the small light emitters 62 a to 62 j to emit light according to the amplitude level from the extracted amplitude level and the amplitude allocation table 30 to the LED controller 32. At that time, as the amplitude level increases, the number of small light emitters 62 a to 62 j that emit light may be emitted in a manner that increases in a direction away from the central support column 42.
For example, when the amplitude level is “10” as shown in FIG. 10A, all of the small light emitters 62a to 62j forming the light emitter 60 are caused to emit light, and as shown in FIG. When the level is “5”, the five small light emitters 62a to 62e are caused to emit light from the central support column 42 side. In FIG. 10, the shaded portion shows a state where the small light emitter emits light.

In this way, by making the small light emitters 62a to 62e emit light, the scale based on the equal temperament can be easily recognized and visually recognized, and the intensity of the frequency spectrum, that is, the volume of the scale corresponding to the frequency where the spectrum stands can be easily increased or decreased. It can be visually recognized.

Next, a musical sound visualization apparatus 10c according to a third embodiment of the present invention will be described with reference to FIGS.
The main difference from the first embodiment is that a light emitting keyboard instrument 70 and a frequency light emitter allocation table 45 are provided as shown in FIG. The same equipment and members as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIG. 12, the light-emitting keyboard instrument 70 of the present embodiment is formed of, for example, an electronic piano or the like, and each LED includes a LED light as a light-emitting device 74. In the present embodiment, the light-emitting keyboard instrument 70 includes, for example, 36 healthy boards K1 to K36. These healthy boards K1 to K36 correspond to 36 average temperament scales of, for example, 164.8 Hz to 1244.5 Hz as average temperament frequencies. Further, the light-emitting keyboard instrument 70 is configured to include an LED controller (not shown) that controls the light emission of the light emitter 74 in the same manner as the LED controller 32 described above.
As shown in FIG. 11, the light-emitting keyboard instrument 70 configured in this way is connected to the main control unit 22 and causes the light emitter 74 to emit light according to an instruction from the main control unit 22.
In addition, as shown in FIG. 12, the light-emitting keyboard instrument 70 of the present embodiment has a display unit 72 such as a display and a spiral staircase light-emitting unit 40b in front of the player of the light-emitting keyboard instrument 70.

Next, as shown in FIG. 13, the frequency light emitter assignment table 45 of the present embodiment assigns the healthy boards K1 to K36 numbers to the above-mentioned average tempered frequencies of 164.8 Hz to 1244.5 Hz. It is a table.

Note that the light-emitting keyboard instrument 70 of this embodiment includes a musical sound output unit 76 including a DA conversion circuit, a speaker, and the like, as shown in FIG.

Next, the operation of the musical tone visualization apparatus 10c of the present embodiment configured as described above will be described.
First, the main control unit 22 transmits an instruction to read the music CD set in the music recording medium reader 23, and receives the music information digital signal of the music CD. And the main control part 22 extracts the frequency spectrum information of the frequency equal to the equal temperament frequency based on the said musical tone information digital signal similarly to 1st Embodiment.
Next, the main control unit 22 gives an instruction to cause the light emitters 74 of the healthy boards K1 to K36 assigned to the extracted frequencies from the extracted frequency spectrum information and the frequency light emitter assignment table 45 to emit light. And the light emitter 74 emits light. The main control unit 22 transmits the instruction to the light-emitting keyboard instrument 70 and transmits an instruction to cause the light emitters 46 a to 46 l assigned to the extracted frequency to emit light to the LED controller 32.

As the musical tone visualization apparatus 10c operates in this way, the light emitter 74 of the light-emitting keyboard instrument 70 emits light according to the musical sound information digital signal recorded on the musical sound recording medium such as a music CD. You can play with reference to the health record. Thus, according to the musical sound visualization apparatus 10c, it is possible to provide the musical sound visualization apparatus 10c that is easy for the practitioner of the light-emitting keyboard instrument 70 to learn.

Note that musical score data and image data of a conductor showing the strength of hitting a healthy board may be recorded on the music CD, and such information may be displayed on the display unit 72 as shown in FIG. In addition, the musical sound recorded on the music CD may be output from the musical sound output unit 76.

As described so far, according to the musical sound visualization apparatuses 10, 10a, 10b, and 10c of the present embodiment, it is possible to provide a musical sound visualization apparatus that can easily understand the visual progression of the average temperament scale in the musical sound. it can.

As described above, some of the embodiments of the present invention have been described in detail with reference to the drawings. However, these are merely examples, and the present invention is variously modified and improved based on the knowledge of those skilled in the art. Can be implemented.

10, 10a, 10b, 10c Musical sound visualization device 12 Input unit 20 Light emission control unit 23 Musical sound recording medium reader 24 Analysis unit 26 Storage unit 28 Scale frequency allocation table 30 Amplitude allocation table 40 Spiral staircase light emitting unit 44 Unit spiral light emitter Group 45 Frequency light emitter allocation table 46 Light emitter 62 Small light emitter 70 Light emitting keyboard instrument 74 Light emitter

Claims (6)

A spiral staircase light emitting portion including a plurality of light emitters arranged in a spiral staircase shape around a central support;
A light emission control unit for controlling light emission of the spiral staircase light emitting unit,
The spiral staircase light-emitting part is
Twelve light emitters are grouped together, and a plurality of unit spiral light emitter groups arranged in such a manner that the twelve light emitters form one round of the spiral are arranged along the central column. Become
The light emission control unit
A storage unit;
An analysis unit that calculates a frequency spectrum from the input musical sound information digital signal using a Fourier transform method,
The storage unit has a scale frequency assignment table in which a frequency corresponding to an average scale is assigned to each of the light emitters,
The musical sound visualization apparatus, wherein the light emission control unit causes the light emitter to emit light according to the frequency of the frequency spectrum based on the frequency spectrum and the scale frequency allocation table calculated by the analysis unit. Each of the light emitters includes a plurality of small light emitters arranged in a substantially horizontal direction from the center support column, and the storage unit assigns the small light emitters according to the amplitude of the frequency spectrum. The musical tone sighting according to claim 1, wherein the light emission control unit causes the small light emitter to emit light according to the amplitude of the frequency spectrum based on the amplitude of the frequency spectrum and the amplitude allocation table. Device. A keyboard corresponding to the average temperament scale, and further comprising a light emitting healthy board instrument including a light emitter in each of the healthy boards, wherein the storage unit has a frequency corresponding to the average temperament scale for each of the light emitters. The light emission controller assigns the light emitters according to the frequency of the frequency spectrum based on the frequency spectrum calculated by the analysis unit and the frequency light emitter assignment table. The musical tone visualization apparatus according to claim 1, wherein the musical tone visualization apparatus emits light. The musical tone visualization apparatus according to claim 1, wherein the light emission control unit includes an input unit that transmits the musical tone information digital signal. The input unit includes a sound collection unit for collecting musical sounds to be played or sung, and an AD conversion unit for converting a musical sound analog signal from the sound collection unit to the musical sound information digital signal. Item 5. The musical sound visualization apparatus according to any one of Items 1 to 4. 6. The musical tone visualization apparatus according to claim 1, wherein the input unit includes a music recording medium reader that reads a medium on which a musical sound information digital signal is recorded.

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