Method and device for detecting vibration performance of sounding board of musical instrument

A technology for vibration characteristics and detection devices, which is applied to measurement devices, musical instruments, stringed instruments, etc., can solve the problems of difficulty in controlling the force of string plucking, reducing reliability and scientificity, and increasing instrument errors. The method is simple and applicable. , the structure is simple, the effect of reducing the requirements

Inactive Publication Date: 2014-04-09
NORTHEAST FORESTRY UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the strings of the musical instrument are generally plucked by the operator's hand to make them vibrate. The main disadvantage of this method is that the force of the strings is not easy to control, and the force of each plucking may be different, which not only makes the The errors of objective evaluation indicators such as sound intensity and sound length of musical instruments increase, and the reliability and scientificity of comparisons between the objective evaluation results of different musical instruments are reduced.

Method used

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  • Method and device for detecting vibration performance of sounding board of musical instrument
  • Method and device for detecting vibration performance of sounding board of musical instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] This embodiment provides a detection device for the vibration characteristics of a musical instrument soundboard, such as figure 1 shown. The device includes a bracket 11, and a horizontal support rod 15 connected with the bracket, a rotating shaft 12 is sleeved on the supporting rod 15, and a holder 16 connected to the rotating shaft 12 clamps a lever fixing device 13. A driving rod 14 is installed on the rod fixing device 13, and the driving rod fixing device 13 here is selected as a mechanical pencil shell with a diameter of 0.4-0.8mm pencil lead loaded on the cross section, and the driving rod 14 is selected as a mechanical pencil lead that matches the diameter of the pencil shell . The device can realize the plucking of the horizontally placed strings in the vertical direction. The size of the plucking power to the strings can be controlled by adjusting the diameter and extension length of the pencil lead.

[0022] The method of using the device to detect the vi...

Embodiment 2

[0024] This embodiment provides another detection device for the vibration characteristics of the soundboard of a musical instrument, such as figure 2 shown. The device comprises a base 1, a support rod 2 arranged on the base 1 and capable of sliding in the horizontal direction, a driving lever 3 with a mechanical pencil function arranged on the top of the supporting rod 2 in the horizontal direction, and the driving rod 3 can rotate in the horizontal plane.

[0025] In the detection device for the vibration characteristics of the soundboard of a musical instrument, the rear end of the base is provided with a slideway 1-2 in the shape of an isosceles trapezoid.

[0026] In the detection device for the vibration characteristics of the musical instrument soundboard, the support rod 2 includes a slider 2-1 with an isosceles trapezoidal head cross section and a rectangular tail cross section, which is arranged in the middle of the tail of the slider 2-1. The height adjustment ro...

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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 [0001] A method and device for detecting the vibration characteristics of a soundboard of a musical instrument belong to the field of musical instrument detection and testing. Background technique [0002] The objective evaluation of the acoustic quality of a musical instrument is done by quantitatively detecting the vibration spectrum of the strings of the musical instrument. The scientific and reliable objective evaluation of the acoustic quality of a musical instrument is to study the relationship between the material of the soundboard of the musical instrument and the vibration characteristics of the soundboard of the musical instrument and the acoustic quality of the musical instrument. The basis of internal laws is also the basis for comparing the differences in the acoustic qualities of different products of the same musical instrument. In order to complete the objective evaluation of the acoustic quality of musical instruments, it is first necessary ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10D3/02G01H9/00
Inventor 刘镇波吕多军黄英来刘一星
Owner NORTHEAST FORESTRY UNIVERSITY
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