CN111951766A - Full-frequency-band high-tone-quality dulcimer with sound beam and sound tunnel - Google Patents
Full-frequency-band high-tone-quality dulcimer with sound beam and sound tunnel Download PDFInfo
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
- G10D1/00—General design of stringed musical instruments
- G10D1/14—Struck string instruments, e.g. dulcimers
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
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Abstract
A full-band high-tone-quality dulcimer with a sound beam and a sound tunnel comprises a resonance box, wherein the resonance box comprises a panel and a bottom plate, the lower surface of the panel is provided with a first groove and a second groove, the two grooves are crossed and mutually communicated to divide the lower surface of the panel into four upper resonance areas; the middle part of the lower surface of the panel is fixedly provided with an upper sound beam assembly which comprises a plurality of first strip-shaped sound beam components, and the first strip-shaped sound beam components are arranged on two sides of the first groove and the second groove in pairs; the first groove and the second groove form an upper transverse sound tunnel and an upper longitudinal sound tunnel on the lower surface of the panel respectively. The panel of the dulcimer is changed from the conventional free vibration mode to the current standard vibration mode, and the problems that the high-tone area of the dulcimer cannot be bright and the low-tone area is not full and smooth are solved from the aspects of vibration, resonance and sound production. Practice proves that the improved design scheme has outstanding substantive features and remarkable technical progress.
Description
Technical Field
The invention relates to a stringed instrument, in particular to a full-band high-sound-quality dulcimer with a sound beam and a sound tunnel.
Background
Dulcimer, also known as yangqin, playing qin, brass wire qin, sector qin, bat qin and butterfly qin, belongs to the musical instrument of struck string, and is an essential musical instrument in the band of Chinese nation. The dulcimer has the characteristics of bright tone, large volume and high rigidity and flexibility; when playing slowly, the timbre looks like a dingdong mountain spring, and when playing quickly, the timbre looks like a rippling water. The tone is bright and is as clear and crisp as big and small pearl falling jade plates. The expressive force is very rich, the instrument can be played alone, in concert or as a book, a rap and a opera accompaniment, the instrument often serves as the role of 'piano accompaniment' in folk instrumental ensemble and folk bands, and the instrument is an indispensable main instrument.
The dulcimer structurally comprises a resonance box, a jaw, a rolling shaft, a bridge and strings. As shown in fig. 1 to 5, the resonance box 1 includes a face plate 2 and a bottom plate 3 disposed below the face plate 2 at an interval. The upper surface of panel 2 is equipped with several bridge 4, and the interval supports between the lower surface of panel 2 and the upper surface of bottom plate 3 has several transom 5 (backup pad), has seted up several sound outlet 6 on the bottom plate 3. Wherein, it has four ~ five circular holes 7 to open on backup pad 5, is called the wind eye, makes the sound wave after the sympathetic response convection current in resonance box 1, then spreads by play sound hole 6.
The range of a dulcimer is usually four octaves, with the high range occupying about two octaves, the mid range occupying about one and a half octaves, and the low range occupying about one and a half octaves. Because the restriction that receives traditional structural design, the ubiquitous problem is at present dulcimer: the timbre of the high-tone area and the low-tone area is not good, and the due timbre effect of the dulcimer is not exerted. The specific expression is that the high pitch area is not bright, and the low pitch area is not thick and mellow. The main reason for this is that the resonator 1 of the present dulcimer cannot satisfy the wide-band vibration from the high-pitch area to the low-pitch area, i.e. cannot adapt to the wide frequency variation resonance and vibration of the high-pitch area, the middle-pitch area and the low-pitch area at the same time. Further studies have shown that many factors affect the broadband vibration in the resonance box 1, mainly the design problem of the conventional transom beam 5, except for the panel 2 and the bottom plate 3. The design of the transverse sound beam 5 of the existing resonance box 1 is unreasonable, which is not beneficial to the resonance box 1 to exert good sound wave resonance and vibration from a high-pitch area to a low-pitch area. For example, the transom beam 5 is supported between the face plate 2 and the bottom plate 3 in the resonance box 1, and plays a main role in mechanics, not a good acoustic role, corresponding to the position where the bridge 4 is disposed.
Therefore, how to solve the above-mentioned deficiencies of the prior art is a problem to be solved by the present invention.
Disclosure of Invention
The invention aims to provide a full-band high-sound-quality dulcimer with a sound beam and a sound tunnel.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a take full frequency channel high tone quality dulcimer of sound roof beam and sound tunnel, includes the resonance box, this resonance box includes panel and bottom plate, wherein:
the lower surface of the panel is provided with a first groove and a second groove, the first groove and the second groove are crossed on the lower surface of the panel and are communicated with each other, the crossed point is positioned in the center of the panel, and the lower surface of the panel is further divided into four upper resonance areas;
an upper sound beam assembly is fixedly arranged in the middle of the lower surface of the panel and comprises a plurality of first strip-shaped sound beam components which are arranged on two sides of the first groove and two sides of the second groove in pairs;
the first groove and the second groove form an upper transverse sound tunnel and an upper longitudinal sound tunnel on the lower surface of the panel respectively.
The relevant content in the above technical solution is explained as follows:
1. in the scheme, a third groove and a fourth groove are arranged on the upper surface of the bottom plate, the third groove and the fourth groove are crossed on the upper surface of the bottom plate and are communicated with each other, the crossed points are positioned in the center of the bottom plate, and the upper surface of the bottom plate is further divided into four lower resonance areas;
a lower sound beam assembly is fixedly arranged in the middle of the upper surface of the bottom plate and comprises a plurality of second strip-shaped sound beam components, and the second strip-shaped sound beam components are arranged on two sides of the third groove and two sides of the fourth groove in pairs;
the third groove and the fourth groove form a lower transverse sound tunnel and a lower longitudinal sound tunnel on the upper surface of the bottom plate respectively.
2. In the above solution, the first grooves and the second grooves are crossed and communicated with each other on the lower surface of the panel, which is helpful for rapidly transmitting the vibration of strings to the periphery of the panel through the cross-shaped sound tunnel (i.e. the sound tunnel) formed by the grooves;
the third grooves and the fourth grooves are crossed and communicated with each other on the upper surface of the bottom plate, so that the cross-shaped sound tunnel formed by the grooves is favorable for rapidly transmitting vibration to the periphery of the bottom plate.
3. In the above scheme, the intersection of the first groove and the second groove is located in the center of the panel, and the intersection of the third groove and the fourth groove is located in the center of the bottom plate, so that the design can improve the tone quality and the tone color of the resonance box.
4. In the above scheme, an upper connecting beam is arranged between two adjacent first strip-shaped sound beam components, and the upper connecting beam spans over the first groove and the second groove to form the upper sound beam assembly in a groined shape; and each upper connecting beam is positioned in the central area of the lower surface of the panel. By this design, the central area of the panel can be reinforced.
5. In the above scheme, a lower connecting beam is arranged between two adjacent second strip-shaped sound beam components, and the lower connecting beam spans over the third groove and the fourth groove to form the lower sound beam assembly in a groined shape; and each of the lower connecting beams is located in a central region of the upper surface of the base plate. By this design, the central area of the base plate can be reinforced.
6. In the above scheme, the panel and the bottom plate are divided from the sounding frequency band and respectively comprise a peripheral high-pitch region, a middle-pitch region and a central low-pitch region; the wall thicknesses of the panel and the bottom plate are gradually increased from outside to inside, the wall thickness of a low-sound area is larger than that of a middle-sound area, and the wall thickness of the middle-sound area is larger than that of a high-sound area; the upper sound beam assembly is located in a bass zone of the panel, and the lower sound beam assembly is located in a bass zone of the bottom plate.
By the design, the thicker bass region is arranged close to the center, so that low-frequency vibration with lower frequency and larger amplitude can generate more muddy and smooth bass in the bass regions of the panel and the bottom plate; through setting up thinner high pitch area in the position of keeping away from the center, can make the frequency higher, the less high-frequency vibration of amplitude send more penetrating, bright high pitch at the high pitch area of panel, bottom plate, and then make the dulcimer all obtain effectively promoting at tone quality, the tone quality that full frequency channel produced.
7. In the above scheme, the upper sound beam assembly and the lower sound beam assembly are arranged in alignment in the height direction of the resonance box.
8. In the above scheme, a plurality of upper radiation sound beams are respectively arranged in each upper resonance region of the panel, each upper radiation sound beam in the same upper resonance region is arranged in parallel, and one end of at least one upper radiation sound beam faces to the geometric center of the panel;
and a plurality of lower radiation sound beams are respectively arranged in each lower resonance area of the bottom plate, the lower radiation sound beams in the same lower resonance area are arranged in parallel, and one end of at least one lower radiation sound beam faces to the geometric center of the bottom plate.
9. In the scheme, the device also comprises a plurality of joists, wherein each joist is vertically arranged and is provided with an upper supporting leg and a lower supporting leg;
the upper supporting leg support is positioned in a first groove or a second groove of the lower surface of the panel, the lower supporting leg support is positioned in a third groove or a fourth groove of the upper surface of the bottom plate, the width of the upper supporting leg is smaller than the width of the first groove and the width of the second groove, and the width of the lower supporting leg is smaller than the width of the third groove and the width of the fourth groove.
10. In the above scheme, the upper supporting leg is in a shape of a long and thin strip, and the length direction of the upper supporting leg corresponds to the length direction of the first groove or the second groove;
the lower supporting legs are in a shape of a long strip, and the length direction of the lower supporting legs corresponds to the length direction of the third groove or the fourth groove.
11. In the above scheme, the bottom plate is provided with a plurality of sound holes, and each sound hole is respectively located in the third groove, the fourth groove and the intersection of the third groove and the fourth groove.
12. In the above scheme, the first groove, the second groove, the third groove and the fourth groove are arc grooves, so that the thickness of the panel and the bottom plate is reduced as much as possible, and resonance and vibration of the panel and the bottom plate are prevented from being influenced.
13. In the above scheme, the lengths of the first groove and the second groove are both smaller than the width of the panel;
the lengths of the third groove and the fourth groove are smaller than the width of the bottom plate;
smooth transition surfaces are arranged between the outer ends of the first groove and the second groove and the lower surface of the panel; smooth transition surfaces are arranged between the outer ends of the third groove and the fourth groove and the upper surface of the bottom plate.
14. In the above scheme, the inner end thickness of the upper sound beam assembly and the inner end thickness of the lower sound beam assembly are both larger than the outer end thickness. By means of the design, the central areas of the panel and the bottom plate can be reinforced.
The working principle and the advantages of the invention are as follows:
the invention relates to a full-band high-tone-quality dulcimer with a sound beam and a sound tunnel, which comprises a resonance box, wherein the resonance box comprises a panel and a bottom plate, the lower surface of the panel is provided with a first groove and a second groove, the two grooves are crossed and mutually communicated to divide the lower surface of the panel into four upper resonance areas; the middle part of the lower surface of the panel is fixedly provided with an upper sound beam assembly which comprises a plurality of first strip-shaped sound beam components, and the first strip-shaped sound beam components are arranged on two sides of the first groove and the second groove in pairs; the first groove and the second groove form an upper transverse sound tunnel and an upper longitudinal sound tunnel on the lower surface of the panel respectively.
Compared with the prior art, the invention improves the panel design of the existing dulcimer, particularly the dulcimer, in order to solve the problem that the existing dulcimer cannot give consideration to high, middle and low tone regions and has good resonance timbre. The concrete aspects are as follows: firstly, erecting an upper sound beam assembly on a panel; secondly, a cross-shaped groove is formed in the panel, so that a cross-shaped sound tunnel is formed in the panel.
Aiming at the problems that the high-pitched area of the traditional dulcimer cannot be brightened and the low-pitched area is not enough, the design and the sounding mechanism of the dulcimer are deeply discussed and researched, and the main reason that the tone quality of the high-pitched area and the low-pitched area of the traditional dulcimer is poor is found out because the panel is unreasonably designed. Therefore, the inventor breaks through the restriction of the composition design of the traditional dulcimer, and the invention provides an improved design scheme which changes the panel from the traditional free vibration mode to the current standard vibration mode, solves the problems that the high-pitched area of the dulcimer cannot be brightened and the low-pitched area is not enough from the angles of vibration, resonance and sound production, and practices prove that the improved design scheme has outstanding substantive characteristics and obvious technical progress and obtains obvious technical effects.
Due to the application of the technical scheme, compared with the existing dulcimer, the dulcimer has the following advantages and effects:
1. the panel is provided with the upper sound beam assembly, and the bass resonance is concentrated in the central area of the panel and the treble resonance is concentrated in the peripheral area of the panel due to the fact that the bass is large in amplitude and low in frequency relative to the treble, so that the strength of the central area of the panel is enhanced, and the upper sound beam assembly plays an important role in improving the tone color and tone quality of the bass area. The thickness of the panel is a thickness gradually changing structure with thick central area and thin periphery, so that the strength of the central area of the panel is enhanced, the thickness difference between the central area and the peripheral edge area of the panel is relatively changed, and the panel plays an important role in improving the tone color and tone quality of a high-pitch area.
The same design concept is also applicable to the improvement of the bottom plate, namely, the lower sound beam component is arranged on the bottom plate to play an auxiliary role in improving the tone color and tone quality of the dulcimer.
2. The panel is provided with the cross-shaped groove, the cross-shaped groove actually forms the cross-shaped sound tunnel on the panel, the vibration is collected by the center of the panel and is rapidly transmitted to the peripheral edge of the panel through the cross-shaped sound tunnel (namely the sound tunnel), and the cross-shaped groove plays a key role in improving the timbre and the sound quality of the bass region and the treble region.
The same design concept is also applicable to the improvement of the bottom plate, namely, the cross-shaped groove is arranged on the bottom plate to play an auxiliary role in improving the tone color and tone quality of the dulcimer.
3. According to the invention, through the design of the upper sound beam assembly and the cross-shaped groove, four resonance areas are equally divided on the panel. When the dulcimer is played, the vibration of strings of the dulcimer is firstly transmitted to the central area of the panel, then is transmitted to each resonance area through the sound tunnel, and resonance and vibration are generated, so that the string sound is amplified into resonance sound of the panel. The dulcimer can only produce four sound wave volume when playing before improving, and in the sympathetic response intracavity, the panel corresponds the region and is a sympathetic response region, and the region that the bottom plate corresponds is a sympathetic response region, and every sympathetic response region produces a sound wave volume, and a string wave volume in addition, in addition a percussion wave volume, four sound wave volumes are counted altogether. The improved dulcimer can generate seven sound wave quantities during playing, wherein four resonance areas of the panel generate four sound wave quantities, and one sound wave quantity of the bottom plate, one string wave quantity and one percussion wave quantity are added to total seven sound wave quantities.
If the bottom plate is also provided with the cross-shaped grooves, four resonance areas are equally divided on the bottom plate, ten sound wave quantities can be generated during playing the improved dulcimer, wherein four resonance areas of the panel generate four sound wave quantities, four resonance areas of the bottom plate generate four sound wave quantities, one string wave quantity is added, and one percussion wave quantity is added, so that the total ten sound wave quantities are calculated.
The sound wave quantity, i.e. the number of sound waves, for a particular stringed instrument of a resonance box mainly depends on the number of resonance areas in the resonance box, besides one string wave quantity and one percussion wave quantity, and usually, the instrument generates one sound wave quantity per resonance area during playing, and how many resonance areas generate how many sound wave quantities. In addition, the sound volume directly affects the timbre, penetration and volume of the instrument. Therefore, the design of the invention can obviously improve the timbre of the high-tone area and the low-tone area and increase the penetrating power of the high-tone area and the low-tone area.
4. The grooves are arc-shaped grooves, so that the thickness of the panel can be reduced as much as possible, and the resonance and vibration of the panel are prevented from being influenced.
Drawings
Fig. 1 is a schematic structural view of a conventional dulcimer (strings not shown);
3 FIG. 3 2 3 is 3 a 3 schematic 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 3 1 3; 3
FIG. 3 is a schematic cross-sectional view taken along line B-B of FIG. 1;
fig. 4 is a schematic structural view of the lower surface of a panel of a conventional dulcimer;
fig. 5 is a schematic structural view of a bottom plate of a conventional dulcimer;
FIG. 6 is a schematic structural view of the lower surface of a panel (without upper connecting beams) according to an embodiment of the present invention;
FIG. 7 is a schematic structural view of the lower surface of a panel (having upper connecting beams) according to an embodiment of the present invention;
3 FIG. 3 8 3 is 3 a 3 schematic 3 sectional 3 view 3 taken 3 along 3 the 3 line 3 A 3- 3 A 3 in 3 FIG. 3 6 3 ( 3 without 3 the 3 upper 3 connecting 3 beam 3) 3; 3
FIG. 9 is a left side schematic view of FIG. 7 (with upper tie beam);
FIG. 10 is a schematic structural view of the upper surface of the base plate (without the lower connecting beam) according to the embodiment of the present invention;
FIG. 11 is a schematic structural view of the upper surface of a base plate (with a lower connecting beam) according to an embodiment of the present invention;
3 FIG. 3 12 3 is 3 a 3 schematic 3 sectional 3 view 3 taken 3 along 3 the 3 line 3 A 3- 3 A 3 in 3 FIG. 3 10 3 ( 3 without 3 the 3 lower 3 connecting 3 beam 3) 3; 3
FIG. 13 is a left side schematic view of FIG. 11 (with a lower tie beam);
FIG. 14 is a schematic sectional view from below of an embodiment of the present invention.
FIG. 15 is a schematic structural view of a sound beam assembly according to an embodiment of the present invention;
FIG. 16 is a left side schematic view of FIG. 15;
FIG. 17 is a schematic structural view of an upper radiation beam according to an embodiment of the present invention;
FIG. 18 is a schematic side view of an upper radiant beam according to an embodiment of the present invention;
FIG. 19 is a schematic structural view of a joist in accordance with an embodiment of the present invention;
fig. 20 is a side view of a joist according to an embodiment of the present invention.
In the above drawings: 1. a resonance box; 2. a panel; 3. a base plate; 4. carrying out bridge connection; 5. a transom beam; 6. a sound outlet hole; 7. a hole; 8. a panel; upper resonance region; 9. a base plate; 9a lower resonance region; 10. an upper sound beam assembly; 10a, a first strip-shaped sound beam member; 10b, upper connecting beams; 11. a bottom sound beam assembly; 11a, a second strip-shaped sound beam member; 11 b. a lower connecting beam; 12. a first trench; 13. a second trench; 14. a sound outlet hole; 15. a third trench; 16. a fourth trench; 17. an upper radiation beam; 18. a hole; 19. a lower radiation beam; 20. a joist; 20a, an upper supporting leg; lower support foot 20 b.
Detailed Description
The invention is further described with reference to the following figures and examples:
example (b): the present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the disclosure may be shown and described, and which, when modified and varied by the techniques taught herein, can be made by those skilled in the art without departing from the spirit and scope of the disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms "a", "an", "the" and "the", as used herein, also include the plural forms.
The terms "first," "second," and the like, as used herein, do not denote any order or importance, nor do they denote any order or importance, but rather are used to distinguish one element from another element or operation described in such technical terms.
As used herein, "connected" or "positioned" refers to two or more elements or devices being in direct physical contact with each other or in indirect physical contact with each other, and may also refer to two or more elements or devices being in operation or acting on each other.
As used herein, the terms "comprising," "including," "having," and the like are open-ended terms that mean including, but not limited to.
As used herein, the term (terms), unless otherwise indicated, shall generally have the ordinary meaning as commonly understood by one of ordinary skill in the art, in this written description and in the claims. Certain words used to describe the disclosure are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the disclosure.
Referring to fig. 6-20, a full-band high tone quality dulcimer with a sound beam and a sound tunnel comprises a resonator, wherein the resonator comprises a panel 8 and a bottom plate 9.
The lower surface of the panel 8 is provided with a first groove 12 and a second groove 13, the first groove 12 and the second groove 13 are crossed and mutually communicated on the lower surface of the panel 8, the crossing points are located at the center of the panel 8, and the lower surface of the panel 8 is further equally divided into four upper resonance areas 8 a.
An upper sound beam assembly 10 is fixedly arranged in the middle of the lower surface of the panel 8, the upper sound beam assembly 10 comprises a plurality of first strip-shaped sound beam components 10a, and the first strip-shaped sound beam components 10a are arranged on two sides of the first groove 12 and two sides of the second groove 13 in parallel in pairs.
The first groove 12 and the second groove 13 form an upper transverse sound tunnel and an upper longitudinal sound tunnel, respectively, on the lower surface of the panel 8.
The upper surface of the bottom plate 9 is provided with a third groove 15 and a fourth groove 16, the third groove 15 and the fourth groove 16 are crossed and mutually communicated on the upper surface of the bottom plate 9, the crossed points are positioned at the center of the bottom plate 9, and the upper surface of the bottom plate 9 is further equally divided into four lower resonance areas 9 a.
The middle part of the upper surface of the bottom plate 9 is fixedly provided with a lower sound beam assembly 11, the lower sound beam assembly 11 comprises a plurality of second strip-shaped sound beam components 11a, and the second strip-shaped sound beam components 11a are arranged on two sides of the third groove 15 and two sides of the fourth groove 16 in parallel in pairs.
The third groove 15 and the fourth groove 16 form a lower transverse sound tunnel and a lower longitudinal sound tunnel on the upper surface of the bottom plate 9, respectively.
Preferably, as shown in fig. 7 and 9, an upper connection beam 10b is disposed between two adjacent first strip-shaped sound beam members 10a, and the upper connection beam 10b spans over the first groove 12 and the second groove 13 to form the upper sound beam assembly 10 in a groined shape; and each of the upper connecting beams 10b is located at a central region of the lower surface of the panel 8. Four upper connecting beams 10b form a square reinforcing structure, so that the bass zone at the center of the panel 8 can be further reinforced, and the tone quality of the bass zone of the dulcimer can be further improved.
Preferably, as shown in fig. 11 and 13, a lower connection beam 11b is disposed between two adjacent second strip-shaped sound beam members 11a, and the lower connection beam 11b spans over the third groove 15 and the fourth groove 16 to form the lower sound beam assembly 11 in a groined shape; and each of the lower connecting beams 11b is located at a central region of the upper surface of the base plate 9. A square reinforcing structure is formed by the four lower connecting beams 11b, so that a bass area in the center of the bottom plate 9 is further reinforced, and the tone quality of the dulcimer bass area is further improved.
Preferably, the upper sound beam assembly 10 and the lower sound beam assembly 11 are provided in alignment in the height direction of the resonance box. The inner end thickness of the upper sound beam assembly 10 and the inner end thickness of the lower sound beam assembly 11 are both larger than the outer end thickness. With this design, the central regions of the face plate 8 and the bottom plate 9 can be reinforced.
Preferably, a plurality of upper radiation sound beams 17 are respectively arranged in each upper resonance region 8a of the panel 8, each upper radiation sound beam 17 in the same upper resonance region 8a is arranged in parallel, and one end of at least one upper radiation sound beam 17 faces to the geometric center of the panel 8;
a plurality of lower radiation sound beams 19 are respectively arranged in each lower resonance area 9a of the bottom plate 9, the lower radiation sound beams 19 in the same lower resonance area 9a are arranged in parallel, and one end of at least one lower radiation sound beam 19 faces to the geometric center of the bottom plate 9. The inner end thickness of the upper radiation sound beam 17 and the lower radiation sound beam 19 is larger than the outer end thickness, and the central areas of the panel 8 and the bottom plate 9 can be reinforced respectively.
Preferably, the dulcimer further comprises a plurality of joists 20, wherein each joist 20 is vertically arranged and is provided with an upper supporting foot 20a and a lower supporting foot 20b for reinforcing the integral structure of the dulcimer; the upper supporting leg 20a is supported and positioned in the first groove 12 or the second groove 13 of the lower surface of the panel 8, the lower supporting leg 20b is supported and positioned in the third groove 15 or the fourth groove 16 of the upper surface of the bottom plate 9, the width of the upper supporting leg 20a is smaller than the width of the first groove 12 and the width of the second groove 13, and the width of the lower supporting leg 20b is smaller than the width of the third groove 15 and the width of the fourth groove 16.
Wherein, the joist 20 is provided with a circular hole 18 (wind eye) to lead the sound wave after resonance to be convected in the resonance box and then be transmitted out by the sound outlet 14.
The upper supporting leg 20a is in a shape of a slender strip, and the length direction thereof corresponds to the length direction of the first groove 12 or the second groove 13, so that interference to a sound tunnel can be avoided; the lower supporting leg 20b is in a shape of a long and thin strip, and the length direction of the lower supporting leg corresponds to the length direction of the third groove 15 or the fourth groove 16, so that interference to a sound tunnel can be avoided.
A plurality of sound outlet holes 14 are formed in the bottom plate 9, and each sound outlet hole 14 is located in the third groove 15, the fourth groove 16, and a junction of the third groove 15 and the fourth groove 16.
Preferably, the panel 8 and the bottom plate 9 are distinguished from each other by a sound frequency band, and each of the front plate and the bottom plate includes a peripheral high-pitched sound region, a middle-pitched sound region and a central low-pitched sound region; the wall thicknesses of the panel 8 and the bottom plate 9 are gradually increased from outside to inside, the wall thickness of a low sound area is larger than that of a middle sound area, and the wall thickness of the middle sound area is larger than that of a high sound area. By the design, the thicker bass region is arranged at a position close to the center, so that low-frequency vibration with lower frequency and larger amplitude can generate more muddy and smooth bass in the bass regions of the panel 8 and the bottom plate 9; by locating the thinner treble region at a location remote from the center, higher frequency, lower amplitude high frequency vibrations can be made to produce more transparent, brighter treble in the treble regions of the panel 8 and the bottom plate 9. The upper sound beam assembly 10 and the lower sound beam assembly 11 are both positioned in a bass region, and the load of the middle area of the panel 8 and the bottom plate 9 can be further improved.
Preferably, each groove is an arc-shaped groove, so that the thickness of the panel 8 and the bottom plate 9 is reduced as much as possible, and resonance and vibration of the panel 8 and the bottom plate 9 are prevented from being influenced.
The lengths of the first groove 12 and the second groove 13 are both smaller than the width of the panel 8; the lengths of the third groove 15 and the fourth groove 16 are both smaller than the width of the bottom plate 9; smooth transition surfaces are arranged between the outer ends of the first grooves 12 and the second grooves 13 and the lower surface of the panel 8, so that vibration is transmitted to the periphery of the panel 8 more uniformly. Smooth transition surfaces are arranged between the outer ends of the third and fourth grooves 15 and 16 and the upper surface of the bottom plate 9, so that the vibration is transmitted to the periphery of the bottom plate 9 more uniformly.
Other embodiments and structural variations of the present invention are described below:
1. in the above embodiments, the illustrated dulcimer is only used for illustration, and the structure is not intended to limit the protection scope of the present invention, and other dulcimers with similar structures should be covered by the protection scope of the present invention if the technical features of the present invention are adopted.
2. In the above embodiments, the number of the upper sound beam assemblies 10 and the lower sound beam assemblies 11 is not limited to one set, but may be multiple sets of parallel or other designs that help to reinforce the load in the middle of the front panel 8 and the bottom panel 9, which is easily understood and accepted by those skilled in the art.
3. In the above embodiments, the first bar-shaped sound beam member 10a or the second bar-shaped sound beam member 11a may be straight bars as shown in the figure, and two of them are combined at 90 degrees and are disposed at two sides of the groove in pairs.
Alternatively, the first strip-shaped sound beam member 10a or the second strip-shaped sound beam member 11a may have a radian and include two straight edges, and the straight edges of two adjacent strip-shaped sound beam members are arranged on two sides of the groove in pairs.
4. In the above embodiments, the first groove 12, the second groove 13, the third groove 15 and the fourth groove 16 are all arc-shaped grooves. However, the present invention is not limited thereto, and the grooves may be designed in other shapes, such as a V-shape, a U-shape, a W-shape, and other concave structures. As would be readily understood and accepted by those skilled in the art.
5. In the above embodiment, the upper sound beam assembly 10 and the lower sound beam assembly 11 are arranged in correspondence with each other in the up-down direction position as viewed from the cross section of the resonance box (see fig. 3). However, the present invention is not limited to this, and may be arranged out of alignment, specifically, may be determined depending on the tone color and tone quality of the resonance box. As would be readily understood and accepted by those skilled in the art.
6. In the above embodiment, the upper sound beam assembly 10 and the lower sound beam assembly 11 have the same shape and size. The present invention is not limited thereto, and the upper sound beam assembly 10 and the lower sound beam assembly 11 may be different in shape and size. The sound quality can be determined according to the tone color and tone quality of the resonance box. As would be readily understood and accepted by those skilled in the art.
Aiming at the problems that the high-pitched area of the traditional dulcimer cannot be brightened and the low-pitched area is not enough, the design and the sounding mechanism of the dulcimer are deeply discussed and researched, and the main reason that the tone quality of the high-pitched area and the low-pitched area of the traditional dulcimer is poor is found out because the panel is unreasonably designed. Therefore, the inventor breaks through the restriction of the composition design of the traditional dulcimer, and the invention provides an improved design scheme which changes the panel from the traditional free vibration mode to the current standard vibration mode, solves the problems that the high-pitched area of the dulcimer cannot be brightened and the low-pitched area is not enough from the angles of vibration, resonance and sound production, and practices prove that the improved design scheme has outstanding substantive characteristics and obvious technical progress and obtains obvious technical effects.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. The utility model provides a take full frequency channel high tone quality dulcimer of sound roof beam and sound tunnel which characterized in that:
comprises a resonance box, wherein the resonance box comprises a panel (8) and a bottom plate (9);
a first groove (12) and a second groove (13) are formed in the lower surface of the panel (8), the first groove (12) and the second groove (13) are crossed on the lower surface of the panel (8) and are communicated with each other, the cross points are located in the center of the panel (8), and then the lower surface of the panel (8) is divided into four upper resonance areas (8 a) in equal parts;
an upper sound beam assembly (10) is fixedly arranged in the middle of the lower surface of the panel (8), the upper sound beam assembly (10) comprises a plurality of first strip-shaped sound beam components (10 a), and the first strip-shaped sound beam components (10 a) are arranged on two sides of the first groove (12) and two sides of the second groove (13) in pairs;
the first groove (12) and the second groove (13) form an upper transverse sound tunnel and an upper longitudinal sound tunnel on the lower surface of the panel (8) respectively.
2. The dulcimer of claim 1, wherein: a third groove (15) and a fourth groove (16) are formed in the upper surface of the bottom plate (9), the third groove (15) and the fourth groove (16) are crossed and communicated with each other on the upper surface of the bottom plate (9), the crossed points are located in the center of the bottom plate (9), and the upper surface of the bottom plate (9) is further divided into four lower resonance areas (9 a) in equal parts;
a lower sound beam assembly (11) is fixedly arranged in the middle of the upper surface of the bottom plate (9), the lower sound beam assembly (11) comprises a plurality of second strip-shaped sound beam components (11 a), and the second strip-shaped sound beam components (11 a) are arranged on two sides of the third groove (15) and two sides of the fourth groove (16) in pairs;
the third groove (15) and the fourth groove (16) form a lower transverse sound tunnel and a lower longitudinal sound tunnel on the upper surface of the bottom plate (9) respectively.
3. The dulcimer of claim 1, wherein: an upper connecting beam (10 b) is arranged between every two adjacent first strip-shaped sound beam components (10 a), and the upper connecting beam (10 b) stretches across the upper parts of the first groove (12) and the second groove (13) to form a well-shaped upper sound beam assembly (10); and each upper connecting beam (10 b) is positioned in the central area of the lower surface of the panel (8).
4. The dulcimer of claim 2, wherein: a lower connecting beam (11 b) is arranged between every two adjacent second strip-shaped sound beam components (11 a), and the lower connecting beam (11 b) spans over the third groove (15) and the fourth groove (16) to form a lower sound beam assembly (11) in a groined shape; and each of the lower connecting beams (11 b) is located in a central region of the upper surface of the bottom plate (9).
5. The dulcimer of claim 1, wherein: the panel (8) is divided into a peripheral high-pitch area, a middle-pitch area and a central low-pitch area from the pronunciation frequency band;
the wall thickness of the panel (8) is gradually increased from outside to inside, the wall thickness of a low-sound area is larger than that of a middle-sound area, and the wall thickness of the middle-sound area is larger than that of a high-sound area;
the upper sound beam assembly (10) is located in a bass region of the panel (8).
6. The dulcimer of claim 2, wherein: the bottom plate (9) is divided into a peripheral high-pitch area, a middle-pitch area and a central low-pitch area from the pronunciation frequency band;
the wall thickness of the bottom plate (9) is gradually increased from outside to inside, the wall thickness of a low-sound area is larger than that of a middle-sound area, and the wall thickness of the middle-sound area is larger than that of a high-sound area;
the bass beam assembly (11) is located in a bass region of the bottom plate (9).
7. The dulcimer of claim 2, wherein: the upper sound beam assembly (10) and the lower sound beam assembly (11) are arranged in a contraposition mode in the height direction of the resonance box.
8. The dulcimer of claim 2, wherein: the device also comprises a plurality of joists (20), wherein each joist (20) is vertically arranged and is provided with an upper supporting foot (20 a) and a lower supporting foot (20 b);
the upper supporting feet (20 a) are supported and positioned in a first groove (12) or a second groove (13) on the lower surface of the panel (8), the lower supporting feet (20 b) are supported and positioned in a third groove (15) or a fourth groove (16) on the upper surface of the bottom plate (9), the width of the upper supporting feet (20 a) is smaller than that of the first groove (12) and the second groove (13), and the width of the lower supporting feet (20 b) is smaller than that of the third groove (15) and the fourth groove (16).
9. The dulcimer of claim 8, wherein: the upper supporting leg (20 a) is in a slender strip shape, and the length direction of the upper supporting leg corresponds to the length direction of the first groove (12) or the second groove (13);
the lower supporting leg (20 b) is in a shape of a long and thin strip, and the length direction of the lower supporting leg corresponds to the length direction of the third groove (15) or the fourth groove (16).
10. The dulcimer of claim 2, wherein: a plurality of sound emitting holes (14) are formed in the bottom plate (9), and each sound emitting hole (14) is located in the third groove (15), the fourth groove (16) and the junction of the third groove (15) and the fourth groove (16).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010839077.3A CN111951766B (en) | 2020-08-19 | 2020-08-19 | Full-band high-tone-quality dulcimer with sound beam and sound tunnel |
| PCT/CN2020/136860 WO2022036965A1 (en) | 2020-08-19 | 2020-12-16 | Full-band high-quality dulcimer provided with sound beams and sound tunnels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010839077.3A CN111951766B (en) | 2020-08-19 | 2020-08-19 | Full-band high-tone-quality dulcimer with sound beam and sound tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111951766A true CN111951766A (en) | 2020-11-17 |
| CN111951766B CN111951766B (en) | 2024-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010839077.3A Active CN111951766B (en) | 2020-08-19 | 2020-08-19 | Full-band high-tone-quality dulcimer with sound beam and sound tunnel |
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| Country | Link |
|---|---|
| CN (1) | CN111951766B (en) |
| WO (1) | WO2022036965A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022036965A1 (en) * | 2020-08-19 | 2022-02-24 | 苏州礼乐乐器股份有限公司 | Full-band high-quality dulcimer provided with sound beams and sound tunnels |
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| CN85104017A (en) * | 1985-05-20 | 1986-11-19 | 四川音乐学院 | A kind of dulcimer that includes the groined type brace summer |
| CN1062229A (en) * | 1990-12-03 | 1992-06-24 | 杨竞明 | Right angle dulcimer |
| CN201142207Y (en) * | 2008-01-18 | 2008-10-29 | 吴汉军 | Improved dulcimer structure |
| RU2364954C1 (en) * | 2008-02-04 | 2009-08-20 | Александр Евгеньевич Хромов | Clamp of system of drum-type mechanism of string musical instrument tremolo |
| CN207337911U (en) * | 2017-10-31 | 2018-05-08 | 舟山市大众胶带有限公司 | The exhausting and denoising device of driving belt vulcanizing boiler |
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| GB268041A (en) * | 1925-12-24 | 1927-03-24 | William Shepherd Watts | Improvements in pianos |
| US8378191B2 (en) * | 2009-06-25 | 2013-02-19 | Joseph Barillaro | Soundboard bracing structure system for musical stringed instruments |
| US8450587B2 (en) * | 2011-08-16 | 2013-05-28 | Mcp Ip, Llc | Bracing system for stringed instrument |
| CN111951766B (en) * | 2020-08-19 | 2024-11-01 | 苏州礼乐乐器股份有限公司 | Full-band high-tone-quality dulcimer with sound beam and sound tunnel |
| CN212434227U (en) * | 2020-08-19 | 2021-01-29 | 苏州礼乐乐器股份有限公司 | Full-frequency-band high-tone-quality dulcimer with sound beam and sound tunnel |
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2020
- 2020-08-19 CN CN202010839077.3A patent/CN111951766B/en active Active
- 2020-12-16 WO PCT/CN2020/136860 patent/WO2022036965A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85104017A (en) * | 1985-05-20 | 1986-11-19 | 四川音乐学院 | A kind of dulcimer that includes the groined type brace summer |
| CN1062229A (en) * | 1990-12-03 | 1992-06-24 | 杨竞明 | Right angle dulcimer |
| CN201142207Y (en) * | 2008-01-18 | 2008-10-29 | 吴汉军 | Improved dulcimer structure |
| RU2364954C1 (en) * | 2008-02-04 | 2009-08-20 | Александр Евгеньевич Хромов | Clamp of system of drum-type mechanism of string musical instrument tremolo |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022036965A1 (en) * | 2020-08-19 | 2022-02-24 | 苏州礼乐乐器股份有限公司 | Full-band high-quality dulcimer provided with sound beams and sound tunnels |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022036965A1 (en) | 2022-02-24 |
| CN111951766B (en) | 2024-11-01 |
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