CN102663991A - Method and device for detecting vibration performance of sounding board of musical instrument - Google Patents
Method and device for detecting vibration performance of sounding board of musical instrument Download PDFInfo
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- CN102663991A CN102663991A CN2012101432130A CN201210143213A CN102663991A CN 102663991 A CN102663991 A CN 102663991A CN 2012101432130 A CN2012101432130 A CN 2012101432130A CN 201210143213 A CN201210143213 A CN 201210143213A CN 102663991 A CN102663991 A CN 102663991A
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- musical instrument
- driving lever
- vibration characteristics
- pick
- instrument soundboard
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Abstract
The invention relates to a method and a device for detecting the vibration performance of a sounding board of a musical instrument, belonging to the field of detection tests of the musical instrument. The method comprises the following steps of: fixing strings to the sounding board of the musical instrument; plucking the strings by means of a plucking bar, wherein the plucking bar is made of a material which is bent or broken when subjected to certain external force; and completing one plucking cycle after the plucking bar is bent or broken when the strings are plucked. The device comprises a bracket, wherein the bracket is hinged with a rotating shaft; the surface of the rotating shaft is fixedly provided with a plucking bar fixing device; and the plucking bar fixing device is provided with the plucking bar. According to the method and the device, the sound quality of the strings of string music instruments is detected and judged. The method is simple and practical; and the device is simple in structure and convenient to operate, provides uniform force excitation for the strings, reduces the requirements on detectors and improves the detection efficiency.
Description
Technical field
A kind of detection method of musical instrument soundboard vibration characteristics and device belong to musical instrument and detect field tests.
Background technology
The objective evaluation of instrumental acoustics quality is to accomplish through particular instrument detection by quantitative musical instrument vibrations of strings frequency spectrum; Science, reliably the objective evaluation of instrumental acoustics quality is a research musical instrument soundboard with the basis of inherent law between the vibration characteristics of material and musical instrument soundboard and the instrumental acoustics quality, also is the basis of difference between the musical instrument different product acoustic quality more of the same race.In order to accomplish the objective evaluation of instrumental acoustics quality, at first need excite the string vibration to make it produce the sound spectrum signal.At present; Generally stir the musical instrument string through operator's hand, make it produce vibration, the main drawback that this method exists is: the strength that string is stirred is wayward; The strength of at every turn stirring all maybe be different; This not only makes the error of the objective evaluation indexs such as loudness of a sound, the duration of a sound of musical instrument increase, and, reduced relatively reliability and science between the different musical instrument objective evaluation results.
Summary of the invention
The present invention is directed to above-mentioned the problems of the prior art, design a kind of detection method and pairing device of this method of musical instrument soundboard vibration characteristics.This method is simple and practical, and this apparatus structure is simple, is convenient to operation, and can realize provides the uniform force excitation to string, reduces requirement, raising detection efficiency to the tester.
The objective of the invention is to realize like this:
A kind of detection method of musical instrument soundboard vibration characteristics; String is fixed on the musical instrument soundboard, utilizes driving lever to finger a stringed instrument, said driving lever is to receive the material that certain external force promptly bends or fracture to process; After said driving lever bends or fractures when fingering a stringed instrument, accomplish and once stir the cycle.
The detection method of above-mentioned a kind of musical instrument soundboard vibration characteristics, said driving lever is a pencil-lead.
The detection method of above-mentioned a kind of musical instrument soundboard vibration characteristics, said driving lever is an aluminum strip.
A kind of pick-up unit of musical instrument soundboard vibration characteristics comprises support, is hinged with rotating shaft on the said support, and said rotating shaft surface is fixed with the driving lever stationary installation, on the said driving lever stationary installation driving lever is installed.
The pick-up unit of above-mentioned a kind of musical instrument soundboard vibration characteristics, said driving lever stationary installation is the propelling pencil shell, said driving lever is propelling pencil core or aluminium core.
The pick-up unit of above-mentioned a kind of musical instrument soundboard vibration characteristics, said propelling pencil core and aluminium core all are right cylinder, and the cross-sectional diameter of said propelling pencil core is 0.4-0.8mm, and the cross-sectional diameter of said aluminium core is 0.2-0.6mm.
The pick-up unit of above-mentioned a kind of musical instrument soundboard vibration characteristics has horizontal support bar on the said support, and said rotating shaft is socketed on the horizontal support bar, connects in the said rotating shaft to be used for clamper that the driving lever stationary installation is fixed.
The pick-up unit of above-mentioned a kind of musical instrument soundboard vibration characteristics; Said support comprises base; Be configured on the base and can the along continuous straight runs sliding type braces; Horizontal direction is configured in the clamper that the driving lever stationary installation is fixed of being used for of supporting bar top, and said clamper can be that the axle center rotates in surface level with the support bar.
The pick-up unit of above-mentioned a kind of musical instrument soundboard vibration characteristics, base rear end has the slideway that is shaped as isosceles trapezoid.
The pick-up unit of above-mentioned a kind of musical instrument soundboard vibration characteristics; Described support bar comprises that the head xsect is that isosceles trapezoid, afterbody xsect are the slide block of rectangle; Be configured in the slider tail centre position, the height adjusting link of vertical direction, height adjusting link is made up of roofbolt and bar cover; Roofbolt is flexible in the bar cover, and through the position of roofbolt in the bar cover, height lock-screw location; In the upper end of roofbolt, disposing to be the pivoted housing of rotating shaft with the roofbolt, and the pivoted housing top disposes 1 ~ 3 stationkeeping screw, and said driving lever passes pivoted housing, is located by the stationkeeping screw.
Compare with prior art, automatic lead for retractable pencil of method utilization or aluminium core that the present invention proposes finger a stringed instrument, and method is simply suitable, detects effective.The device of the present invention's design can make each test all have identical starting condition, and is simple in structure, is convenient to operation, and can realize provides the uniform force excitation to string, reduces requirement, raising detection efficiency to the tester.
Description of drawings
Fig. 1 is the structural representation of the pick-up unit of the horizontal direction musical instrument soundboard vibration characteristics of stirring.
Fig. 2 is the structural representation of the pick-up unit of the vertical direction musical instrument soundboard vibration characteristics of stirring.
Among the figure: 1 base, 1-2 slideway, 2 support bars, 2-1 slide block, 2-2 roofbolt, 2-3 bar cover, 2-4 height lock-screw, 2-5 pivoted housing, 2-6 stationkeeping screw, 3 driving levers, 3-1 propelling pencil lead for retractable pencil, 11 supports, 12 rotating shafts, 13 driving lever stationary installations, 14 driving levers, 15 horizontal support bars, 16 clampers.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the invention is done and to be described in further detail.
Embodiment 1
Present embodiment provides a kind of pick-up unit of musical instrument soundboard vibration characteristics, and is as shown in Figure 1.This device comprises support 11; And the support bar 15 of the horizontal direction that links to each other with support; On support bar 15, be socketed with rotating shaft 12, clamper 16 clampings that link to each other with rotating shaft 12 have driving lever stationary installation 13, on the said driving lever stationary installation 13 driving lever 14 are installed; The driving lever stationary installation 13 here is chosen as and loads cross-sectional diameter is the propelling pencil shell of 0.4-0.8mm pencil-lead, and driving lever 14 is chosen as the propelling pencil core that conforms to the pencil housing diameter.This device can be realized stirring horizontal positioned string vertical direction.String being stirred the size of power can control through the diameter and the extension elongation of adjustment pencil-lead.
Utilize said device to the method that musical instrument soundboard vibration characteristics detects to be, string is fixed on the musical instrument soundboard, utilize pencil-lead to finger a stringed instrument, pencil-lead fractures promptly to accomplish and once stirs the cycle.Each cross section of pencil-lead etc. are thick, and so each pencil-lead suffered power that fractures equates, also receives identical power thereby string is struck.
Embodiment 2
Present embodiment provides the pick-up unit of another kind of musical instrument soundboard vibration characteristics, and is as shown in Figure 2.This device comprises base 1, is configured on the base 1 and also can goes up along continuous straight runs sliding type braces 2, and horizontal direction is configured in the driving lever with propelling pencil function 3 on support bar 2 tops, and driving lever 3 can rotate in surface level.
The pick-up unit of above-mentioned musical instrument soundboard vibration characteristics, base rear end have the slideway 1-2 that is shaped as isosceles trapezoid.
The pick-up unit of above-mentioned musical instrument soundboard vibration characteristics; Described support bar 2 comprises that the head xsect is that isosceles trapezoid, afterbody xsect are the slide block 2-1 of rectangle; Be configured in slide block 2-1 afterbody centre position, the height adjusting link of vertical direction, height adjusting link is made up of roofbolt 2-2 and bar cover 2-3; Roofbolt 2-2 is flexible in bar cover 2-3, and through the position of height lock-screw 2-4 location roofbolt 2-2 in bar cover 2-3; In the upper end of roofbolt 2-2, disposing to be the pivoted housing 2-5 of rotating shaft with roofbolt 2-2, and the pivoted housing top disposes 2 stationkeeping screw 2-6, and said driving lever 3 passes pivoted housing 2-5, is located by stationkeeping screw 2-6.
The pick-up unit of above-mentioned musical instrument soundboard vibration characteristics, described driving lever 3 front ends are flexible, and diameter is arranged is the aluminium core 3-1 of 0.2-0.6mm.
In practical process, adjustment roofbolt 2-2 realizes the adjustment to driving lever 3 height in the position in bar cover 2-3, after height control is good; 2-4 fixes roofbolt 2-2 with the height lock-screw; The position of driving lever 3 in pivoted housing 2-5 adjusted in the position of adjustment slide block 2-1 in slideway 1-2, and fixed by stationkeeping screw 2-6; Adjust the extended length of automatic aluminium core 3-1 at last, can realize the test of stirring after the adjustment string.
Utilize device noted earlier to be, string is fixed on the musical instrument soundboard, utilize the aluminium core to finger a stringed instrument, when the aluminium core obviously distortion takes place and after slipping over string, is promptly accomplished and once stirred the cycle the method that the vibration characteristics of musical instrument soundboard detects.String being stirred the size of power can control through the diameter of adjustment aluminium core.
Each cross section of aluminium core etc. are thick, and so each aluminium core is equated by the curved suffered power of straight change, also receives identical power thereby string is struck.
Claims (10)
1. the detection method of a musical instrument soundboard vibration characteristics; It is characterized in that string is fixed on the musical instrument soundboard; Utilize driving lever to finger a stringed instrument; Said driving lever is to receive the material that certain external force promptly bends or fracture to process, and after said driving lever bends or fractures when fingering a stringed instrument, accomplishes and once stirs the cycle.
2. the detection method of a kind of musical instrument soundboard vibration characteristics according to claim 1 is characterized in that said driving lever is a pencil-lead.
3. the detection method of a kind of musical instrument soundboard vibration characteristics according to claim 1 is characterized in that said driving lever is an aluminum strip.
4. the pick-up unit of a musical instrument soundboard vibration characteristics; It is characterized in that comprising support (11); Be hinged with rotating shaft (12) on the said support, said rotating shaft (12) surface is fixed with driving lever stationary installation (13), and driving lever (14) is installed on the said driving lever stationary installation (13).
5. the pick-up unit of a kind of musical instrument soundboard vibration characteristics according to claim 4 is characterized in that said driving lever stationary installation (13) is the propelling pencil shell, and said driving lever (14) is propelling pencil core or aluminium core.
6. the pick-up unit of a kind of musical instrument soundboard vibration characteristics according to claim 5; It is characterized in that said propelling pencil core and aluminium core all are right cylinder; The cross-sectional diameter of said propelling pencil core is 0.4-0.8mm, and the cross-sectional diameter of said aluminium core is 0.2-0.6mm.
7. according to the pick-up unit of claim 4,5 or 6 described a kind of musical instrument soundboard vibration characteristics; It is characterized in that having horizontal support bar (15) on the said support (11); Said rotating shaft (12) is socketed on the horizontal support bar (15), and said rotating shaft (12) go up to connect and to be used for clamper (16) that driving lever stationary installation (13) is fixed.
8. according to the pick-up unit of claim 4,5 or 6 described a kind of musical instrument soundboard vibration characteristics; It is characterized in that said support comprises base (1); Be configured in that base (1) is gone up and can along continuous straight runs sliding type braces (2); Horizontal direction is configured in the clamper that the driving lever stationary installation is fixed of being used on support bar (2) top, and said clamper can be that the axle center rotates in surface level with the support bar.
9. the pick-up unit of a kind of musical instrument soundboard vibration characteristics according to claim 8 is characterized in that said base rear end has the slideway (1-2) that is shaped as isosceles trapezoid.
10. the pick-up unit of a kind of musical instrument soundboard vibration characteristics according to claim 8; It is characterized in that described support bar (2) comprises that the head xsect is that isosceles trapezoid, afterbody xsect are the slide block (2-1) of rectangle; Be configured in slide block (2-1) afterbody centre position; The height adjusting link of vertical direction; Height adjusting link is made up of roofbolt (2-2) and bar cover (2-3), and roofbolt (2-2) is flexible in bar cover (2-3) lining, and through the position of roofbolt (2-2) in bar cover (2-3), height lock-screw (2-4) location; In the upper end of roofbolt (2-2), disposing to be the pivoted housing (2-5) of rotating shaft with roofbolt (2-2), and the pivoted housing top disposes 1 ~ 3 stationkeeping screw (2-6), and said driving lever (3) passes pivoted housing (2-5), is located by stationkeeping screw (2-6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210143213.0A CN102663991B (en) | 2012-05-10 | 2012-05-10 | Method and device for detecting vibration performance of sounding board of musical instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210143213.0A CN102663991B (en) | 2012-05-10 | 2012-05-10 | Method and device for detecting vibration performance of sounding board of musical instrument |
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| Publication Number | Publication Date |
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| CN102663991A true CN102663991A (en) | 2012-09-12 |
| CN102663991B CN102663991B (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210143213.0A Expired - Fee Related CN102663991B (en) | 2012-05-10 | 2012-05-10 | Method and device for detecting vibration performance of sounding board of musical instrument |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104392713A (en) * | 2014-12-11 | 2015-03-04 | 哈尔滨幻石科技发展有限公司 | Guitar string timbre detection method based on machine vision |
| CN108492810A (en) * | 2018-03-01 | 2018-09-04 | 山西大学 | A method of it measuring the system of bowed stringed instrument with a thin wooden soundboard vibration and eliminates bowed stringed instrument with a thin wooden soundboard wolf sound |
| CN109425446A (en) * | 2017-09-04 | 2019-03-05 | 北京大学 | A kind of real-time measurement and evaluation system of handle generic operation gimmick and power |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB223471A (en) * | 1924-02-14 | 1924-10-23 | Karl Maendler | Improvements relating to musical keyboard stringed instruments |
| GB214244A (en) * | 1923-04-09 | 1924-12-18 | Sautier Albert | Improvements in or relating to piano actions |
| CN1339149A (en) * | 1999-03-05 | 2002-03-06 | 新型转换器有限公司 | Musical instrument |
| US6415584B1 (en) * | 1998-03-10 | 2002-07-09 | Automatic Tuning Developements Limited | Tuning means for tuning stringed instruments, a guitar comprising tuning means and a method of tuning stringed instruments |
| CN201600886U (en) * | 2009-12-22 | 2010-10-06 | 庐文彬 | String-plucking device |
-
2012
- 2012-05-10 CN CN201210143213.0A patent/CN102663991B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB214244A (en) * | 1923-04-09 | 1924-12-18 | Sautier Albert | Improvements in or relating to piano actions |
| GB223471A (en) * | 1924-02-14 | 1924-10-23 | Karl Maendler | Improvements relating to musical keyboard stringed instruments |
| US6415584B1 (en) * | 1998-03-10 | 2002-07-09 | Automatic Tuning Developements Limited | Tuning means for tuning stringed instruments, a guitar comprising tuning means and a method of tuning stringed instruments |
| CN1339149A (en) * | 1999-03-05 | 2002-03-06 | 新型转换器有限公司 | Musical instrument |
| CN201600886U (en) * | 2009-12-22 | 2010-10-06 | 庐文彬 | String-plucking device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104392713A (en) * | 2014-12-11 | 2015-03-04 | 哈尔滨幻石科技发展有限公司 | Guitar string timbre detection method based on machine vision |
| CN109425446A (en) * | 2017-09-04 | 2019-03-05 | 北京大学 | A kind of real-time measurement and evaluation system of handle generic operation gimmick and power |
| CN108492810A (en) * | 2018-03-01 | 2018-09-04 | 山西大学 | A method of it measuring the system of bowed stringed instrument with a thin wooden soundboard vibration and eliminates bowed stringed instrument with a thin wooden soundboard wolf sound |
| CN108492810B (en) * | 2018-03-01 | 2021-05-14 | 山西大学 | System for measuring vibration of Banhu and method for eliminating Banhu wolf sound |
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| CN102663991B (en) | 2014-04-09 |
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