CN103165110A - Soundboard with simple harmonic overtone - Google Patents
Soundboard with simple harmonic overtone Download PDFInfo
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- CN103165110A CN103165110A CN2011104106711A CN201110410671A CN103165110A CN 103165110 A CN103165110 A CN 103165110A CN 2011104106711 A CN2011104106711 A CN 2011104106711A CN 201110410671 A CN201110410671 A CN 201110410671A CN 103165110 A CN103165110 A CN 103165110A
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- 239000000463 material Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- 238000009527 percussion Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005316 response function Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000002910 structure generation Methods 0.000 description 1
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Abstract
The invention discloses a soundboard with simple harmonic overtone. The soundboard comprises a board body, two end edges and two wavy edges, wherein the board body is provided with a knocking face and two symmetric shafts which are formed on the knocking face, vertical to each other and intersect on the center point of the knocking face. The two end edges are located at two opposite sides of the knocking face and symmetric to one symmetric shaft. The two wavy edges are located on the other two opposite sides and symmetric to the other symmetric shaft. The two end edges and the two wavy edges form the knocking face in an enclosing mode. Through knocking of a periphery position of the center point, a plurality of natural frequencies excited by the board body form a simple harmonic overtone relation approximate to integral multiples, and the harmonious degree of sound is effectively improved.
Description
Technical field
The present invention is about a kind of soundboard, especially a kind of soundboard with simple harmonic quantity frequency multiplication sound.
Background technology
" percussion instrument " mainly by modes such as hitting or knock, forces structure generation to vibrate to sound; Wherein, have the characteristic of different mode of oscillations according to the structure of difformity, size or material, can force this structure to be inspired different free-running frequencies, and then the Sheng Yin ﹝ that can send different scales for example: Do, Re, Mi, ... ﹞.
Generally speaking, common traditional Ji Le Qi ﹝ such as ﹞ such as glockenspiel or xylophone of Daing on the market, mainly arrange in a qin frame equal intervals soundboard that is provided with several different sizes, and according to the size of these several soundboards, can sequentially be inspired Do, Re, Mi ... Deng sound.
For example, please refer to shown in Figure 1ly, disclose and to be used in the existing soundboard 9 of one on traditional percussion instrument, the appearance profile of this existing soundboard 9 is the rectangle plate body of regular shape.One knock face 91 by what knock this existing soundboard 9, can inspire several free-running frequencies, and in these several free-running frequencies, first free-running frequency is the frequency values the lowest, generally be referred to as Ji Yin ﹝ fundamental frequency ﹞; And in these several free-running frequencies, second～N free-running frequency is that frequency values is relatively higher than fundamental tone and ascending sequentially arrayer, generally is referred to as Fan Yin ﹝ overtones ﹞.
Yet, be subject to the regular shape of this existing soundboard 9, cause in N free-running frequency that this existing soundboard 9 is inspired, the proportionate relationship that does not have into integral multiple between fundamental tone and overtone, the sound that makes this existing soundboard 9 send presents the shape attitude ﹝ dissonance ﹞ that is discord, and then causes the sound of this existing soundboard 9 dull and unmelodious.
For these reasons, it is necessary further to improve above-mentioned existing soundboard 9 really.
Summary of the invention
The object of the invention is the above-mentioned shortcoming of improvement, so that a kind of proportionate relationship that makes fundamental tone and overtone have integral multiple to be provided, to form the soundboard of simple harmonic quantity frequency multiplication sound relationship.
For reaching aforementioned goal of the invention, the technological means that the present invention uses is:
A kind of soundboard with simple harmonic quantity frequency multiplication sound, it comprises:
A plate body has one and knocks face, first axis of symmetry and second axis of symmetry, and this first axis of symmetry and the second axis of symmetry are formed at this and knock face, and orthogonal and intersect at the central point that this knocks face;
Two end limits are respectively a first end limit and one the second end limit, and this first end limit and the second end limit are positioned at the relative both sides that this knocks face, and are symmetrical in this first axis of symmetry; And
Two rippled edges, be respectively first rippled edge and second rippled edge, this first rippled edge and the second rippled edge are positioned at this other relative both sides of knocking face, and be symmetrical in this second axis of symmetry, and face is knocked around forming this jointly in this first rippled edge, the second rippled edge, first end limit and the second end limit.
Preferably, it is two smooth curves that this first axis of symmetry is divided this first rippled edge and the second rippled edge equally respectively, and respectively this smooth curve to the longest distance of this second axis of symmetry, is the intersection point on this rippled edge respectively and the end limit distance to this second axis of symmetry.
Preferably, respectively this smooth curve is to the bee-line of this second axis of symmetry, for at the intersection point of respectively this rippled edge and the first axis of symmetry and respectively any point between the intersection point on this rippled edge and end limit is to the distance of this second axis of symmetry, this any point is not equal to the intersection point of respectively this rippled edge and the first axis of symmetry and the intersection point on this rippled edge and end limit respectively.
Preferably, this first end limit and the second end limit are all straight line.
Preferably, this first end limit and the second end limit are parallel to this first axis of symmetry simultaneously.
Preferably, this plate body is the structure with same thickness.
Preferably, this plate body separately is provided with two assembly holes, and these two assembly holes connect top, the bottom surface of this plate body, and is symmetrical in this first axis of symmetry.
Preferably, these two assembly holes are positioned on this second axis of symmetry.
The present invention by symmetric construction and wavy smooth curve the common soundboard that consists of, can make several free-running frequencies that the peripheral position that knocks this central point is inspired form simple harmonic quantity frequency multiplication sound relationship near integral multiple, effectively reach the melodious degree that promotes sound.
Description of drawings
Fig. 1: the stereographic map of existing idiophonic soundboard.
Fig. 2: the stereographic map with soundboard of simple harmonic quantity frequency multiplication sound of the present invention.
Fig. 3: the planimetric map with soundboard of simple harmonic quantity frequency multiplication sound of the present invention.
[main element symbol description]
1 plate body
11 knock face 111 first surfaces
112 second surface 113 the 3rd surfaces
114 the 4th surface 12 first axis of symmetry
13 second axis of symmetry 14 assembly holes
2 the 2 ' second end limit, first end limits
3 first rippled edge the 3 ' second rippled edges
O central point D1 the first distance
D2 second distance D3 the 3rd distance
P1 first end points P2 the second end points
P3 the 3rd end points P4 the 4th end points
R knocks district RP reference point
The SP reference point
9 existing soundboards 91 knock face.
Embodiment
For above-mentioned and other purpose of the present invention, feature and advantage can be become apparent, preferred embodiment of the present invention cited below particularly, and cooperation accompanying drawing are described in detail below:
" simple harmonic quantity frequency multiplication Yin ﹝ harmonics sound ﹞ " of the present invention refers to have between fundamental tone and overtone the proportionate relationship of integral multiple.
Please refer to shown in Fig. 2 and 3, the soundboard with simple harmonic quantity frequency multiplication sound of preferred embodiment of the present invention is better can be applicable to the various existing percussion instruments such as glockenspiel or xylophone, and the present embodiment is chosen as the glockenspiel musical instrument and illustrates as embodiment.This soundboard with simple harmonic quantity frequency multiplication sound comprises a plate body 1, two end limits 2,2 ' and two rippled edges 3,3 ', and this two end limit 2,2 ' and two rippled edges 3,3 ' are jointly around a wherein surface that forms this plate body 1.
The plate body 1 of the present embodiment select to borrow aided metal material material ﹝ for example steel or iron ﹞ make the structure with same thickness, just the present invention is not as limit, this plate body 1 also can be made by glass or other materials.This plate body 1 has an end face, a bottom surface and several sides, and this end face and bottom surface are relative two surfaces of this plate body 1, and these several sides are connected in this end face and bottom surface simultaneously; Wherein, the present embodiment is selected to knock face 11 with the end face of this plate body 1 as one, and this knocks face 11 and mainly uses for a line mallet and knock, in order to force this plate body 1 vibrate and sound.This plate body 1 has one first axis of symmetry 12 and one second axis of symmetry 13, this first axis of symmetry 12 and the second axis of symmetry 13 are formed at this and knock face 11, and orthogonal and intersection is knocked a central point O of face 11 in this, the peripheral position of this central point O is formed with one " knocking district R ", the scope that " knocking district R " as shown in Figure 3 contained with border circular areas as embodiment in order to explanation.Whereby, when this line mallet knocks this " knock district R ", can force fundamental tone that this plate body 1 inspires and overtone near the proportionate relationship of integral multiple, and then can obtain the sound of simple harmonic quantity frequency multiplication sound.
In addition, this plate body 1 separately is provided with two assembly holes 14, this two assembly hole 14 connects top, the bottom surface of this plate body 1, and preferred symmetrical is in this first axis of symmetry 12, and be positioned on this second axis of symmetry 13, can this plate body 1 contraposition be installed on a qin frame via this two assembly hole 14 whereby, knock for the user.In addition, this first axis of symmetry 12 and the second axis of symmetry 13 can be in order to define four quadrants in the two dimensional surface coordinate, and this is knocked face 11 sequentially be divided into a first surface 111, a second surface 112,113 and 1 the 4th surface 114, one the 3rd surface from first quartile along counterclockwise, and this first surface 111, second surface 112, the 113 and the 4th surface 114, the 3rd surface are the figure that four shapes and area all equate.
This two end limit 2,2 ' is respectively a first end limit 2 and one second end limit 2 ', this first end limit 2 and second end limit 2 ' is better all is made of straight line, it lays respectively at this relative two limits of knocking face 11, and be symmetrical in this first axis of symmetry 12, therefore make the side that is connected to this first end limit 2 and the second end limit 2 ' all form plane; Wherein, in the present embodiment, this first end limit 2 and second end limit 2 ' better this first axis of symmetry 12 that is parallel to simultaneously, and relative two end points on this first end limit 2 are respectively one first end points P1 and one second end points P2; Relative two end points on this second end limit 2 ' are respectively one the 3rd end points P3 and one the 4th end points P4.
This two rippled edge 3,3 ' is respectively one first rippled edge 3 and one second rippled edge 3 ', this first rippled edge 3 and the second rippled edge 3 ' are all wavy smooth curve, it lays respectively at this another relative two limits of knocking face 11, and be symmetrical in this second axis of symmetry 13, therefore make the side that is connected to this first rippled edge 3 and the second rippled edge 3 ' all form the curved surface shape.Wherein, relative two end points of this first rippled edge 3 are respectively this first end points P1 and the 3rd end points P3, and relative two end points of this second rippled edge 3 ' are respectively this second end points P2 and the 4th end points P4.
Again, in order to describe the first rippled edge 3 of the present invention and the second main architectural feature of rippled edge 3 ' in detail, below utilize this first rippled edge 3 for example further illustrates, this second rippled edge 3 ' can be described with reference to this first rippled edge 3, therefore repeat no more.
Referring again to shown in Figure 3, this first axis of symmetry 12 forms a reference point SP with the intersection point of this first rippled edge 3, and this reference point SP, the first end points P1 and the 3rd end points P3 are not located along the same line; This reference point SP is divided into two smooth curves with this first rippled edge 3, and this two smooth curve is symmetrical in this first axis of symmetry 12.Again, below the smooth curve between recycling this reference point SP and this first end points P1 further illustrates, and the smooth curve between this reference point SP and the 3rd end points P3 holds and repeats no more; In more detail, this smooth curve has a reference point RP, this reference point RP is not equal to this reference point SP and the first end points, and this reference point RP, the first end points P1 and reference point SP are respectively one first distance B 1, a second distance D2 and one the 3rd distance B 3 to the distance of this second axis of symmetry 13.
In the present embodiment, this first distance B 1 is chosen as this smooth curve to the bee-line of this second axis of symmetry 13, this second distance D2 is chosen as this smooth curve to the longest distance of this second axis of symmetry 13, and the length of the 3rd distance B 3 is selected between this first distance B 1 and second distance D2.In other words, first, second rippled edge 3,3 ' of the present embodiment all is chosen as the smooth curve with a crest and two troughs.
Of the present invention have the soundboard of simple harmonic quantity frequency multiplication sound when reality is used, except this plate body 1 being installed on this qin frame, utilizing manual mode to knock this " knock district R " for the user inspires outside simple harmonic quantity frequency multiplication sound, more can further use in the windbell structure, it is by jointly being suspended to the appropriate locations such as balcony with this plate body 1 and a body of rod, and makes one of this body of rod knock " knocking district R " that end knocks face 11 to being positioned at this.Whereby, when moving this plate body 1 of wind and the body of rod produce when rocking, the knocking end and can knock face 11 with this and collide with each other of this body of rod, and then the sustainable simple harmonic quantity frequency multiplication sound that inspires.
The present invention can be inspired simple harmonic quantity frequency multiplication sound really for checking, knock in this actual impact mallet that utilizes " knocking district R " that this knocks face 11, measure as sensor with microphone and accelerometer, and by after spectrum analyzer calculated rate response function, frequency response function is captured its free-running frequency by the chimeric Ruan spare ﹝ of curve ME ' scope VES ﹞, then compare with the simple harmonic quantity frequency multiplication sound of C6 scale.Wherein, the material parameter of plate body 1 of the present invention as shown in Table 1, and comparative result is as shown in Table 2.
Table one, material parameter
| Density (kg/m3) | 7871.74 |
| Young's modulus (GPa) | 192.95 |
| The Pu Song ratio | 0.27 |
| Thickness (mm) | 3 |
Table two, comparative result (unit: Hz)
Please refer to shown in table two, the target frequency on the second hurdle is the free-running frequency of C6 scale, it becomes the proportionate relationship of integral multiple, therefore by above-mentioned comparative result as can be known, the frequency error value of the fundamental tone that knocks fundamental tone that the present invention inspires and target frequency between both is in the scope of ± 6.7Hz, and the percentage error between the overtone of overtone of the present invention and target frequency can verify that the present invention's the soundboard with simple harmonic quantity frequency multiplication sound can be inspired simple harmonic quantity frequency multiplication sound really all in ± 5% scope.
In addition, because soundboard produces the free-running frequency that vibration inspires, have the proportionate relationship of formula (1) as described below with size and the thickness of soundboard itself:
Wherein, f is free-running frequency, and L is the soundboard size, and t is soundboard thickness.Therefore, by above-mentioned formula (1) can learn free-running frequency and soundboard thickness proportional, and with the relation that square is inversely proportional to of soundboard size, its detail formula derivation is not given unnecessary details in this appearance for being familiar with vibration field person's prior art.Whereby, if when the wish manufacturing can inspire the simple harmonic quantity frequency multiplication sound of C7 scale or other scales, can in advance according to the ratio between its free-running frequency, come corresponding adjustment its soundboard size or thickness.
Soundboard with simple harmonic quantity frequency multiplication sound of the present invention, because knocking face, this can define this first axis of symmetry and the second axis of symmetry, make this two end limit be symmetrical in this first axis of symmetry, and make this two rippled edge be symmetrical in this second axis of symmetry, so, while is by symmetric construction and have the two formed soundboards of wavy smooth curve, can make and knock this and knock several free-running frequency values that the district is inspired and form simple harmonic quantity frequency multiplication sound relationship near integral multiple, except can conveniently knocking, more can effectively reach the effect of the melodious degree that promotes sound.
Claims (8)
1. the soundboard with simple harmonic quantity frequency multiplication sound, is characterized in that, it comprises:
A plate body has one and knocks face, first axis of symmetry and second axis of symmetry, and this first axis of symmetry and the second axis of symmetry are formed at this and knock face, and orthogonal and intersect at the central point that this knocks face;
Two end limits are respectively a first end limit and one the second end limit, and this first end limit and the second end limit are positioned at the relative both sides that this knocks face, and are symmetrical in this first axis of symmetry; And
Two rippled edges, be respectively first rippled edge and second rippled edge, this first rippled edge and the second rippled edge are positioned at this other relative both sides of knocking face, and be symmetrical in this second axis of symmetry, and face is knocked around forming this jointly in this first rippled edge, the second rippled edge, first end limit and the second end limit.
2. the soundboard with simple harmonic quantity frequency multiplication sound as claimed in claim 1, it is characterized in that, it is two smooth curves that this first axis of symmetry is divided this first rippled edge and the second rippled edge equally respectively, and respectively this smooth curve is to the longest distance of this second axis of symmetry, is the intersection point on this rippled edge respectively and the end limit distance to this second axis of symmetry.
3. the soundboard with simple harmonic quantity frequency multiplication sound as claimed in claim 2, it is characterized in that, respectively this smooth curve is to the bee-line of this second axis of symmetry, for at the intersection point of respectively this rippled edge and the first axis of symmetry and respectively any point between the intersection point on this rippled edge and end limit is to the distance of this second axis of symmetry, this any point is not equal to the intersection point of respectively this rippled edge and the first axis of symmetry and the intersection point on this rippled edge and end limit respectively.
4. as claim 1,2 or 3 described soundboards with simple harmonic quantity frequency multiplication sound, it is characterized in that, this first end limit and the second end limit are all straight line.
5. the soundboard with simple harmonic quantity frequency multiplication sound as claimed in claim 4, is characterized in that, this first end limit and the second end limit are parallel to this first axis of symmetry simultaneously.
6. as claim 1,2 or 3 described soundboards with simple harmonic quantity frequency multiplication sound, it is characterized in that, this plate body is the structure with same thickness.
7. as claim 1,2 or 3 described soundboards with simple harmonic quantity frequency multiplication sound, it is characterized in that, this plate body separately is provided with two assembly holes, and these two assembly holes connect top, the bottom surface of this plate body, and is symmetrical in this first axis of symmetry.
8. the soundboard with simple harmonic quantity frequency multiplication sound as claimed in claim 7, is characterized in that, these two assembly holes are positioned on this second axis of symmetry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110410671.1A CN103165110B (en) | 2011-12-12 | 2011-12-12 | Soundboard with simple harmonic overtone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110410671.1A CN103165110B (en) | 2011-12-12 | 2011-12-12 | Soundboard with simple harmonic overtone |
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| Publication Number | Publication Date |
|---|---|
| CN103165110A true CN103165110A (en) | 2013-06-19 |
| CN103165110B CN103165110B (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110410671.1A Expired - Fee Related CN103165110B (en) | 2011-12-12 | 2011-12-12 | Soundboard with simple harmonic overtone |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107665701A (en) * | 2017-08-02 | 2018-02-06 | 苏州市干将坊营造艺术工程有限公司 | A kind of method that percussion instrument soundboard is made of gold brick |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2033535U (en) * | 1988-02-01 | 1989-03-01 | 周德志 | Popular-type xylophone |
| CN2035909U (en) * | 1988-07-07 | 1989-04-12 | 本溪市科学技术开发总公司 | Steel plate music instrument |
| JPH08179760A (en) * | 1994-12-20 | 1996-07-12 | Kawai Musical Instr Mfg Co Ltd | Melody board |
| JPH1138964A (en) * | 1997-07-17 | 1999-02-12 | Seseragi Prod Internatl:Kk | Xylophone |
-
2011
- 2011-12-12 CN CN201110410671.1A patent/CN103165110B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2033535U (en) * | 1988-02-01 | 1989-03-01 | 周德志 | Popular-type xylophone |
| CN2035909U (en) * | 1988-07-07 | 1989-04-12 | 本溪市科学技术开发总公司 | Steel plate music instrument |
| JPH08179760A (en) * | 1994-12-20 | 1996-07-12 | Kawai Musical Instr Mfg Co Ltd | Melody board |
| JPH1138964A (en) * | 1997-07-17 | 1999-02-12 | Seseragi Prod Internatl:Kk | Xylophone |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107665701A (en) * | 2017-08-02 | 2018-02-06 | 苏州市干将坊营造艺术工程有限公司 | A kind of method that percussion instrument soundboard is made of gold brick |
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| Publication number | Publication date |
|---|---|
| CN103165110B (en) | 2015-02-25 |
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