JP2811534B2 - Seat for improving sound and image - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat for improving sound and image.

[0002]

2. Description of the Related Art For example, a plucked musical instrument such as a guitar, a bowed musical instrument such as a violin or a cello, or an acoustic device such as a speaker has a resonator. The resonator is formed by bonding various kinds of wood to form a hollow box shape unique to each musical instrument or acoustic device, and generally has resonance holes (sound holes) of various shapes on a part of the front plate. Then, the resonance body generates resonance by transmitting vibration of a string or vibration by an electric signal, and the sound is diffused to the outside from the top plate and the resonance holes.
In other words, the resonator plays an extremely important role in obtaining a good tone, and it can be said that the quality of the resonator affects the sound quality of musical instruments and equipment.

[0003] By the way, the wood from which the resonator is manufactured has various properties such as the density of the fiber and the content of fat (and the like) even in the same kind of wood. Therefore, even if finished with the same dimensions as designed, it is inevitable that subtle sound shifts and imbalances occur between the manufactured musical instruments. Heretofore, the correction of the sound deviation and imbalance has been performed by a skilled craftsman in a musical instrument by polishing a key point of the resonator by polishing or the like based on experience and intuition.

[0004] Further, in an acoustic device such as a speaker, at the design stage, only electric means for suppressing sound distortion or the like is provided in advance, and tuning according to individual characteristics is performed like a musical instrument. Did not.

[0005]

However, the above-mentioned conventional correction method has the following problems. (A) It takes a lot of time and effort to modify important parts of the resonator by polishing or the like, which increases the manufacturing cost. There is also a shortage of skilled craftsmen. (B) In audio equipment such as speakers, tuning is performed at the design stage for the time being, but this does not take into account variations in dimensions of components and variations in properties of materials. Therefore, it cannot be said that the characteristics are always stable due to sound distortion and imbalance.

The inventor of the present invention has proposed that the frequency of the vibrating part be adjusted because the variation of the natural frequency of each vibrating part of the vibrating body is a factor that causes the sound of the musical instrument to shift or become unbalanced at the time of resonance. It was thought that straightening could be easily achieved if the adjustment could be made easily, and as a result of repeated trial studies, the present invention was completed. That is, an object of the present invention is to provide a sheet for improving sound and image.

[0007]

The features of the present invention are as follows.
It consists in having two or more combinations of certain notch unit types, and arranging these notch unit types symmetrically with respect to the center point. The fixed notch unit type has the following configuration.

That is, it is composed of a combination of a convex portion and a concave portion adjacent to the convex portion, and the convex portion is provided with a pointed convex portion provided at the center and provided on both sides of the pointed convex portion. A pair of side convex portions, and the concave portion is a pair of central concave portions provided between both sides of the pointed convex portion and the pair of side convex portions, and the pointed convex portion. Includes an end recess provided at the end of the side projection on the opposite side, the angle of the tip of the pointed projection is 55 ° to 65 °, and the center recess side of the side projection is The angle is 55 ° to 65 °, and the angle of the side convex portion on the end concave portion side is 11 °.
It is formed in the range of 5 ° to 125 °.

In order to improve sound and image, it is particularly preferable that the angle of the tip of the pointed projection is 60 °, the angle of the side projection on the center concave side is 60 °, and the end of the side projection is 12 on the concave side
0 °.

In the notch unit type according to the present invention, the above angle is important. If these conditions are satisfied for the angle, the shape of the pointed protrusion, the shape of the side protrusion, the shape of the central recess, the shape of the end recess, etc. Alternatively, the size is not particularly limited. There is no particular limitation on the number of notch unit types to be formed, but a power of 2 such as 2, 4, 8, or 16 is preferable for improving sound and image.

The sheet is usually formed in a circular or polygonal shape. The notch unit type can be formed on a sheet and directly attached to an article to improve sound and image. That is, the sound can be improved in the case of a sound generator such as a guitar. When used for compact discs, laser discs, and the like that reproduce an image together with sound, the contrast of the image becomes clear and the image can be improved. The image can also be sharpened by attaching it around the cathode ray tube. Further, even if the sheet is sandwiched between packages and the package is attached, the same effect as that obtained by directly attaching the package is obtained.

The sheet may be made of paper, gold, silver, copper,
Examples thereof include metals such as titanium, synthetic resins, cloths, and composite materials thereof. In the present invention, the circle includes an ellipse, and the polygon includes various polygons.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in the drawings. FIG. 1 is a plan view showing a first embodiment of the sheet according to the present invention. The sheet 1 is formed in an annular shape using paper (100 μm to 1 mm) having a resin coating on the surface.

A notch unit type U1 is provided on the outer peripheral edge of the sheet 1.
However, the cutout unit molds U2 are uniformly arranged at four locations on the inner peripheral edge. Notch unit types U1 and U2 have a convex portion,
It consists of a combination with a concave portion adjacent to the convex portion. Although there are differences between the outer peripheral edge and the inner peripheral edge, the cutout unit type is formed in substantially the same shape.

First, the notch unit type U1 will be described.
In addition, in order to make the figure easy to see, the symbols are entered for two units of the notch unit type U1, and only the main part is entered for the remaining notch unit types. The protrusions forming the notch unit type U1 include a pointed protrusion 11 provided at the center of the notched unit type U1 and side protrusions 12 provided on both sides of the pointed protrusion 11. I have. The recesses constituting the notch unit type U1 are on both sides of the pointed convex portion 11 and the side convex portions 12, 1
2 and a pair of central concave portions C1 and C1 provided between the first and second convex portions 2 and end concave portions a and b provided at the ends of the side convex portions 12 and 12 on the side opposite to the pointed convex portion 11. In.

The angle α of the tip of the pointed projection 11 is formed at 60 °. The angle β on the side of the central concave portion C1 of the side convex portions 12, 12 is formed at 60 °. The angles γ of the side convex portions 12 on the side of the end concave portions a and b are each formed at 120 °.

The cutout unit molds U1 having the above structure are connected at the end recesses a and b and are evenly arranged at four places on the outer peripheral edge of the sheet 1. The connected end recesses a and b constitute a V-shaped connection recess C2.

A window hole 10 is formed in the center of the sheet 1. A notch unit type U2 is arranged on the inner peripheral edge of the window hole 10. The notch unit type U2, like the notch unit type U1, is composed of a combination of a convex portion and a concave portion adjacent to the convex portion. The notch unit type U2 will be described.

The projections forming the notch unit type U2 include a pointed projection 21 provided at the center of the notched unit type U2, and side projections 22, 22 provided on both sides of the pointed projection 21. Contains. The concave portion forming the notch unit type U2 is a pointed convex portion 21.
And a pair of central concave portions 2C1, 2C1 provided between the side convex portions 22 and 22 on both sides thereof, and provided at the ends of the side convex portions 22 and 22 on the side opposite to the pointed convex portion 21. End recesses 2a and 2b.

The angle α of the tip of the pointed projection 21 is 60 °.
It is formed in. The angle β of the side convex portion 22 on the side of the central concave portion 2C1 is formed at 60 °. The angles γ of the side convex portions 22 on the side of the end concave portions 2a and 2b are each formed at 120 °. The notch unit type U2 having the above-described configuration includes an end recess 2a,
It is connected by 2b and is evenly arranged at four places on the inner peripheral edge. The connected end recesses 2a and 2b constitute a V-shaped connection recess 2C2.

In the case of this embodiment, the central recesses 2C1, 2C
1 and the depths of the end recesses 2a and 2b are formed identically in accordance with the notch unit type U1 at the outer peripheral edge. In the inner peripheral portion, the pointed convex portion 11 and the side convex portion 22 are shifted by 45 ° from the pointed convex portion 11 and the side convex portion 12 of the outer peripheral portion.
Are provided so as to face each other.

An adhesive is applied to the back surface of the sheet 1 in advance, and is usually adhered side by side to a base sheet (not shown). At the time of use, it is peeled off from the base sheet and attached to a predetermined location. In this embodiment, the diameter of the sheet 1 is 45 mm, and the diameter of the window 10 is 20 mm.

FIG. 2 is an explanatory view showing a state in which the sheet shown in FIG. 1 is attached to an electric guitar, and FIG. 3 is an explanatory view showing a state in which the sheet is attached to a speaker. The use and operation of this embodiment will be described with reference to FIGS. Please refer to FIG. In the case of the electric guitar G, the sheet 1 is attached to six places on the surface plate. This improves the sound, especially the sound imbalance.

Referring to FIG. In the loudspeaker S, the woofer W is stuck at four positions on the periphery of the woofer W at equal intervals.
Although not shown, the speaker S is adhered in a rectangular shape so as to surround the terminal on the rear surface. Thereby, the sound is improved and the sound imbalance is corrected. It is desirable that the sticking position and the number of the sheets 1 are set to an optimum position by repeating the sticking and the listening sound. However, according to the trial of the present inventor, a sufficient effect can be obtained without doing so. I have.

At this stage, there is no guesswork, but by sticking the sheet 1 to a place that has a subtle influence on the inherent frequency of the resonator, the weight of the sheet 1 and the step of the sheet thickness are reduced. It is considered that air resistance or the like at the time of vibration of the portion synergistically changes the frequency of the resonator and corrects the sound. That is, in the conventional straightening operation, the member of the resonator was shaved, the weight was slightly reduced, and the frequency was changed to perform the straightening. However, in the present invention, the sheet 1 was stuck and the weight of the member was reduced. To change the frequency slightly.

FIG. 4 is a perspective view showing a second embodiment of the sheet according to the present invention. Reference numeral 2 denotes a sheet, which is formed of transparent vinyl chloride, and an adhesive is applied to the back surface in advance, and is usually attached to a base sheet (not shown). At the time of use, it is peeled off from the base sheet and attached to a predetermined location. In addition, the same code | symbol is attached | subjected and shown to the same or equivalent part as the sheet 1. As shown in FIG. The sheet 2 is similar in shape to the sheet 1 and is formed in a size corresponding to a CD record. The dimensions of each part of the sheet 2 in the embodiment are 115 mm in diameter, and the diameter of the window 20 is 46 mm.

FIG. 5 is a frequency characteristic diagram when the sheet is attached to the test CD record, and FIG. 6 is a frequency characteristic diagram when the sheet is not attached. Sheet 2 is as shown in the figure,
Affixed to the label side of CD record D. Since the sheet 2 is transparent, the label surface can be read. According to this, although the reason is not clear, the frequency characteristics are stabilized and the sound quality is improved. That is, in the test CD record to which the sheet 2 is not stuck, a relatively large level fluctuation is observed in a frequency range up to 20 KHZ (see FIG. 6).
On the other hand, in the test CD record to which the sheet 2 is attached, the level fluctuation is improved in the frequency range up to 20 KHZ, and the level is closer to flat. That is, by sticking the sheet 2, the frequency characteristics are improved, and the sound quality is improved.

Incidentally, since the CD record is a defective conductor made of plastic material and rotates at a high speed during reproduction, static electricity is generated due to friction with air, and charging and discharging are repeated. On the other hand, normally, electromagnetic waves are also generated from the device, and the electromagnetic waves and the electromagnetic waves when the CD record discharges static electricity interfere with each other to hinder the reading of laser light, thereby improving the sound quality of the CD record. Seems to be an obstacle in However, according to the trial of the present inventor, it has been found that by sticking the sheet 2 to the CD record, almost no static electricity is generated,
Thus, it is considered that electromagnetic waves are less likely to cause interference and the sound quality of the CD record is improved.

FIG. 7 is a plan view showing a third embodiment of the seat. The sheet 3 has a shape similar to that of the sheet 1 and sub window holes 35, 35a, 35b,
5c. Each sub window hole 35, 35a, 35
b and 35c are similar to the window hole 10 together with the window hole 30. The same or equivalent parts as those of the sheet 1 are denoted by the same reference numerals. The effect of the sheet 1
And is largely the same.

FIG. 8 is a plan view showing a fourth embodiment of the seat. The sheet 4 is formed in a rectangular shape as a whole. Each side is provided with a notch unit type U1 similar to the sheet 1 shown in FIG. Although there is a difference due to the difference in the shape from the circular shape to the square shape in the external shape, the same or equivalent parts as those of the sheet 1 shown in FIG. 1 are denoted by the same reference numerals. The method of use and the effects are substantially the same as those of the above sheets. The present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the claims.

[0031]

The present invention has the above-mentioned structure, and can be used by attaching a seat to a key point such as a musical instrument, an audio device, and a video device.
Although the reason is not clear, sound quality and image quality are improved. Therefore, it does not take much effort to correct subtle differences in sound and imbalance caused by variations in the dimensions of components such as musical instruments, audio equipment, and video equipment, and variations in the properties of materials. Because it is not done, the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view showing a first embodiment of a sheet according to the present invention.

FIG. 2 is an explanatory diagram showing a state where the sheet shown in FIG. 1 is attached to an electric guitar.

FIG. 3 is an explanatory diagram showing a state in which the sheet shown in FIG. 1 is attached to a speaker.

FIG. 4 is a perspective view showing a second embodiment of the sheet according to the present invention.

FIG. 5 is a frequency characteristic diagram when a sheet is attached to a test compact disc.

FIG. 6 is a frequency characteristic diagram of a test compact disc when a sheet is not stuck.

FIG. 7 is a plan view showing a third embodiment of the sheet according to the present invention.

FIG. 8 is a plan view showing a fourth embodiment of the sheet according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheet U1, U2 Notch unit type C1, 2C1 Central concave part C2, 2C2 Connecting concave part 11, 21 Pointed convex part 12, 22 Side convex part a, b, 2a, 2b End concave part 10 Window hole

Claims (4)

(57) [Claims] 1. A sheet for improving sound and image, comprising a combination of two or more notch unit types having the following configuration, wherein the notch unit types are arranged symmetrically with respect to a center point.
The configuration of the notch unit type is as follows. The projection comprises a combination of a projection and a depression adjacent to the projection, wherein the projection is a pointed projection provided at the center and a pair of side portions provided on both sides of the pointed projection. And a pair of central concave portions provided between both sides of the pointed convex portion and the pair of side convex portions, and the concave portion is located on a side opposite to the pointed convex portion. And an end recess provided at the end of the convex portion, wherein the angle of the tip of the pointed convex portion is 55 ° to 65 °, and the angle of the side convex portion on the central concave side is 55 °, respectively. ° to 65 °, the angle of the side convex portion on the end concave portion side is 115 ° to 1 °, respectively.
25 °. 2. The sheet according to claim 1, wherein the notch unit types are connected by end recesses. 3. A sheet formed in a circular or polygonal shape is provided with one or more window holes formed in a circular or polygonal shape. The sheet has an outer peripheral edge and an inner peripheral edge of the window hole. The sheet is formed by combining two or more notch unit types according to claim 1, and these notch unit types are symmetrically arranged with respect to a center point. 4. The sheet according to claim 3, wherein the notch unit types are connected by end recesses.