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Vertical piano pre-positioned sound board

An upright piano and soundboard technology, applied in the field of musical instruments, can solve the problem that the sound source of an upright piano cannot be directly received by the player, and achieve the effects of easy molding, improved timbre, and improved structure and performance

Inactive Publication Date: 2011-04-13
周万昊 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the sound source of the upright piano cannot be directly received by the player, the present invention provides a new upper panel in front of the upright piano shell to replace the upper panel in front of the traditional upright piano

Method used

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  • Vertical piano pre-positioned sound board
  • Vertical piano pre-positioned sound board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1 An upright piano front soundboard, which includes a soundboard frame, the soundboard frame has a soundboard frame hole, and a resonance soundboard is embedded in the soundboard frame hole, and the resonance soundboard is carbon fiber Board or carbon fiber and glass fiber composite board; the thickness of the resonance sound board is 1-2mm.

[0023] The invention provides a method for manufacturing the front soundboard of an upright piano: (1) Carbon fiber or glass fiber is impregnated with epoxy resin to make carbon fiber prepreg or glass fiber prepreg; (2) Carbon fiber is prepreg The cloth is superimposed layer by layer to form a multilayer cloth, or carbon fiber prepreg cloth and glass fiber prepreg cloth are staggered layer by layer to form a multilayer cloth; (3) At a temperature of 130°C, it is cured by a 500-ton press Hot press molding to obtain a carbon fiber board or a carbon fiber and glass fiber composite board, which is used as the front sound board...

Embodiment 2

[0028] Example 2 such as figure 1 As shown, a front soundboard of an upright piano, the soundboard frame 4 has 3 soundboard frame holes arranged in sequence, and the treble resonance soundboard 1, the midrange resonance soundboard 2 and the bass resonance sound are embedded in sequence Board 3; The tweeter resonance sound board 1 is a carbon fiber and glass fiber composite board, the thickness of the composite board is 1.5mm, and the area is 290mm X 270mm; the midrange resonance sound board 2 is a carbon fiber board with an area of ​​690mm X 270mm; The bass sound board 3 is a carbon fiber board, the thickness of the carbon fiber board is 1.1mm, and the area is 290mm X 270mm.

[0029] The manufacturing method of the upright piano front soundboard is the same as in Example 1.

[0030] 1) Technical data of treble sounding board:

[0031] a. Material: 100% carbon fiber, 100% glass fiber composite;

[0032] b. Weaving: warp and weft crossed plain weaving. Carbon fiber cloth and glass fi...

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Abstract

A vertical piano pre-positioned sound board comprises a sound board frame, the sound board frame is provided with one or more orderly arranged sound board frame holes of which each one is embedded with a resonant sound board, the resonant sound board is a carbon fiber board or a carbon fiber and glass fiber composite board; in a range of 40-90db, compared with a traditional vertical piano using an upper panel, sound intensity of the vertical piano using the pre-positioned sound board provided by the invention is averagely improved by 4.5-5.7%. The pre-positioned sound board is suitable for industrial production, service life is greatly prolonged while structure and performance of the piano are enhanced, and economic benefits are increased. The pre-positioned sound board resonates, by the sound board, with sound waves generated by a resonant disc of the piano, players can always directly hear the music played by themselves instead of the sound reflected from the back, simultaneously, a problem of the influence of noise generated by a string machine / a keyboard on tone quality is avoided, and dual improvement of structure and performance of the piano is implemented.

Description

Technical field [0001] The invention belongs to the technical field of musical instruments, and particularly relates to an upright piano front soundboard. Background technique [0002] The original invention of the piano was a platform design, commonly known as a grand piano. The shell structure is open. The emergence of the upright piano is based on the grand piano. In order to adapt to the limitations of family use, the platform design is erected. The resulting series of problems have plagued the world piano industry for more than 100 years. [0003] One of the more critical issues is that the sound board, the sound source carrier of the upright piano, is in the direction of the wall behind it. Therefore, when the player plays the piano, he hears the sound reflected from the back, but cannot hear it. The sound made directly to the resonance plate. The upper panel on the front of the traditional upright piano shell generally rarely uses solid wood panels, mostly medium-density...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10C3/06
Inventor 周万昊周威廉
Owner 周万昊
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