CN211319697U

CN211319697U - Seven string musical instrument bottom plate each scale natural frequency coupling resonance structure

Info

Publication number: CN211319697U
Application number: CN201921293456.6U
Authority: CN
Inventors: 蒋小冬
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-08-21
Anticipated expiration: 2029-08-12

Abstract

The utility model discloses an each scale natural frequency coupling resonance structure of seven-string instrument bottom plate, the seven-string instrument bottom plate includes inner panel and outer bottom plate, dragon pond and phoenix marsh have been seted up on seven-string instrument bottom plate both ends, dragon pond and phoenix marsh are the cavity hole that runs through the seven-string instrument bottom plate, the symmetry sets up many frequency separation slots around dragon pond and phoenix marsh, the resonance amplification region that constitutes each order of overtone with the seven-string instrument between the slot is separated to the frequency, seven-string instrument bottom plate frame inboard is equipped with the resonance slot along its lines, the utility model discloses a shape system structure can accurate effectual coupling amplify the frequency that each scale corresponds, can both obtain a clear overtone after letting each fundamental tone send and list for the tone of seven-string instrument (seven-string instrument) is abundanter, the afternoon is longer, the overtone is more clear bright, the bottom plate shape system structural design has the modulation demodulation, Frequency-selective amplification characteristics.

Description

Seven string musical instrument bottom plate each scale natural frequency coupling resonance structure

Technical Field

The utility model relates to a seven string musical instrument bottom plate technical field specifically indicates a seven string musical instrument bottom plate each scale natural frequency coupling resonance structure.

Background

The seven-stringed harp (Guqin) is used as a treasure of Chinese culture, countless famous majors and styles are produced in the development process of thousands of years, classical styles such as Zhongni style, Fuxi style and Banana leaf style are formed, and on the key technology of determining timbre, lyre makers in various times also form a lot of unified recognitions, such as selection of a piano surface and a bottom plate material, high conductivity requirements of Yueshan and a dragon gum accessory and the like; however, the internal form and system of the timbre core are always in a mysterious state, and the mysterious analysis left by the predecessors is either as secret in family or is rather obscure and unintelligible; the seven-string instrument (Guqin) is also characterized by five-flower eight-door in the manufacturing process, the seven-string instrument is manufactured by the experience summary and the fortune of the instrument maker, and the timbre lingers among the empty, divergent (excessive vibration), tight and stuffy (insufficient vibration). The tone is modified by lacking effective harmonic array formant control on a resonating body of the Guqin, and finally emitted sound shows shrivelled, tasteless and lack of agility (insufficient harmonic), so that the problem that technical personnel urgently need to solve in the related field is to design a coupling resonance structure with modulation-demodulation and frequency-selection amplification characteristics for each scale inherent frequency of a bottom plate of the Guqin.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a technical scheme does: the utility model provides a seven string musical instrument bottom plate each scale natural frequency coupling resonance structure, the seven string musical instrument bottom plate includes inner panel and outer bottom plate, dragon pond and phoenix marsh have been seted up on the seven string musical instrument bottom plate both ends, dragon pond and phoenix marsh are the cavity hole that runs through the seven string musical instrument bottom plate, the symmetry sets up many frequency separation slots around dragon pond and the phoenix marsh, the frequency separates to constitute the resonance amplification region that corresponds with each order of the overtone of seven string musical instrument between the slot, seven string musical instrument bottom plate frame inboard is equipped with the resonance slot along its lines.

Further, the width of the resonance groove is 1.8 cm.

Further, the width of the frequency separation trench is 1.1 cm.

Seven string musical instruments (guqin) produce the vibration wave through the playing of string, and this vibration energy transmits for the resonance body through the mountain and the gum annex and produces the resonance sound production, and whether the resonance body produces the decay or enlargies to the frequency of vibration wave, except material own characteristic, mainly by the inside shape system decision of seven string musical instruments (guqin).

The resonator body is composed of a micro-arc-shaped hollow panel and a bottom plate, the panel is excited by the play of strings to make the panel generate vibration and sound, and the panel is a vibration sound source part of the whole resonator body; the vibration of the bottom plate is driven by the vibration sound pressure of the panel and the wood transmission at the bonding part, and belongs to forced vibration; the vibration energy generated by the forced vibration of the bottom plate is fed back and superposed to the vibration wave of the panel again to form a composite vibration sound wave, so that the bottom plate has the modulation and demodulation functions.

The utility model discloses a shape system structure can be accurate effectual the coupling amplify the frequency that each scale corresponds, can both obtain a clear overtone after letting each fundamental tone send and be listed as. Make seven string musical instruments (guqin) tone colors abundanter, full, the aftertaste is longer, the harmonic is more clear bright, the utility model discloses a bottom plate shape system structural design has modem, frequency-selective amplification characteristic.

Drawings

Fig. 1 is a schematic structural diagram of the natural frequency coupling resonance structure of each scale of the bottom plate of the seven-stringed instrument.

Fig. 2 is a schematic structural diagram of the natural frequency coupling resonance structure of each scale of the bottom plate of the seven-stringed instrument.

Fig. 3 is a schematic structural diagram of the natural frequency coupling resonance structure of each scale of the bottom plate of the seven-stringed instrument.

As shown in the figure: 1. the seven-stringed plucked instrument comprises a seven-stringed plucked instrument bottom plate, 2, a dragon pool, 3, a feng marsh, 4, a frequency separation groove and 5, a resonance groove.

Detailed Description

According to the attached drawing, the natural frequency coupling resonance structure of each scale of the seven-string instrument bottom plate is characterized in that the seven-string instrument bottom plate 1 comprises an inner panel and an outer bottom plate, dragon ponds 2 and phoenix ponds 3 are arranged at two ends of the seven-string instrument bottom plate 1, the dragon ponds 2 and the phoenix ponds 3 are hollow holes penetrating through the seven-string instrument bottom plate 1, a plurality of frequency separation grooves 4 (the shapes of the separation grooves 4 are shown in the attached drawing 1) are symmetrically arranged around the dragon ponds 2 and the phoenix ponds 3, resonance amplification areas corresponding to each scale of the overtones of the seven-string instrument are formed between the frequency separation grooves 4, and resonance grooves 5 are arranged on the inner side of the frame of the seven-string instrument bottom plate 1 along lines of.

As a preferred embodiment of this embodiment, the width of the resonant trench 5 is 1.8 cm.

As a preferred embodiment of this embodiment, the width of the frequency separation trench 4 is 1.1 cm.

With reference to fig. 2, a shaded portion in the drawing is a block in which coupling resonance participates in a seventh-order vibration mode, and when a resonator vibrates at a seventh-order frequency, the block forms coupling resonance, so that the effects of pertinently amplifying and improving the seventh-order frequency are achieved;

with reference to fig. 3, a shaded portion in the drawing is a block in which coupling resonance participates in a ninth-order mode, and when the resonator vibrates at a ninth-order frequency, the block forms coupling resonance, so that the ninth-order frequency is amplified and improved in a targeted manner;

this time frequency spectrum analyzer can clearly detect each order of obvious promotion and reinforcing of formant peak value, the utility model discloses a big or small can be according to seven string musical instruments (guqin) style and the proportional adjustment of size of a dimension, but the system structure of shape and principle do not change.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims

1. The utility model provides a seven string musical instrument bottom plate each scale natural frequency coupling resonance structure, a serial communication port, including the guqin bottom plate, the guqin bottom plate includes inner panel and outer bottom plate, dragon pond and phoenix marsh have been seted up on the guqin bottom plate both ends, dragon pond and phoenix marsh are for the cavity hole that runs through the guqin bottom plate, the symmetry sets up many frequency separation slots around dragon pond and the phoenix marsh, the frequency is separated and is constituteed the resonance amplification region that corresponds with each order of guqin overtone-tenth between the slot, guqin bottom plate frame inboard is equipped with the resonance slot along its lines.

2. The natural frequency coupling resonance structure of each scale of a seven-stringed instruments bottom plate according to claim 1, wherein the width of said resonance groove is 1.8 cm.

3. The natural frequency coupled resonance structure of each scale of a seven-stringed instrument base plate according to claim 1, wherein the width of said frequency separation groove is 1.1 cm.