阅读说明：本技术 一种利用自身声能的长距离传输获得的可变混响系统 (Variable reverberation system obtained by long-distance transmission of self-acoustic energy ) 是由 朱恒 臧鹏 于 2019-11-27 设计创作，主要内容包括：本发明公开了一种利用自身声能的长距离传输获得的可变混响系统,包括：一室内空间,所述室内空间内包括声源区域和受声区域；一条或多条传声管道,所述传声管道的一端对应所述声源区域设置,另一端对应所述受声区域设置。所述传声管道上设有控制阀。不会对所述室内空间的体型和装饰效果有明显的影响,音质和室内空间本身的音质水平保持一致,并可以实现较低的投资额。利用所述传声管道得到独立于所述室内空间的传声路径,传声管道得到声能后辐射到观众席,令观众获得较长延时的混响声能,与室内空间提供的混响声能一起构成较原有室内空间带来的更长的混响时间。(The invention discloses a variable reverberation system obtained by long-distance transmission of self sound energy, which comprises: an indoor space, wherein the indoor space comprises a sound source area and a sound receiving area; one end of each sound transmission pipeline corresponds to the sound source area, and the other end of each sound transmission pipeline corresponds to the sound receiving area. And the sound transmission pipeline is provided with a control valve. The body type and the decorative effect of the indoor space are not obviously influenced, the tone quality and the tone quality level of the indoor space are kept consistent, and lower investment amount can be realized. And obtaining a sound transmission path independent from the indoor space by using the sound transmission pipeline, and radiating the sound transmission pipeline to an auditorium after obtaining sound energy to enable the auditorium to obtain longer-delay reverberation sound energy, so that the longer-delay reverberation sound energy and the reverberation sound energy provided by the indoor space form longer reverberation time than that brought by the original indoor space.)

1. A variable reverberation system obtained by long distance transmission of own acoustic energy, comprising:

an indoor space, wherein the indoor space comprises a sound source area and a sound receiving area;

one end of each sound transmission pipeline is arranged corresponding to the sound source area, and the other end of each sound transmission pipeline is arranged corresponding to the sound receiving area; and the sound transmission pipeline is provided with a control valve, and the control valve is used for controlling the sound energy of the sound transmission pipeline.

2. The variable reverberation system as set forth in claim 1, wherein the sound transmission pipe has a length greater than a distance between the sound source region and the sound receiving region.

3. The variable reverberation system of claim 1, wherein the sound transmission pipe is disposed outside the indoor space, and both ends of the sound transmission pipe communicate with the indoor space.

4. The variable reverberation system of claim 3, wherein one end of the sound transmission pipe is installed on a wall, a floor or a ceiling of the indoor space corresponding to the sound source region; the other end of the sound transmission pipeline is arranged on the wall surface, the floor or the ceiling of the indoor space corresponding to the sound receiving area.

5. The variable reverberation system of claim 1, wherein the sound transmission pipe is sound-insulated and is formed by transmitting sound energy through a long distance.

6. The variable reverberation system of claim 5, wherein the sound insulation treatment is a soundproof cotton disposed outside the sound transmission duct.

7. The variable reverberation system of claim 1, wherein the sound transmission pipe is a metal pipe.

8. The variable reverberation system of claim 7, wherein the sound transmission pipe is made of aluminum or steel.

9. The variable reverberation system obtained by the long distance transmission of the self sound energy as claimed in claim 1, wherein the sound source area is a stage or a playing platform; the sound receiving area is an auditorium.

10. The variable reverberation system of claim 1, wherein the sound transmission pipe is flared at both ends.

Technical Field

The invention relates to the field of sound effect systems, in particular to a variable reverberation system obtained by long-distance transmission of self sound energy.

Background

With the rapid development of the current industries such as culture, performance, entertainment, media and the like, the requirements for natural sound performance and recording of natural sound performance spaces (theaters, concert halls, playing halls and the like) are higher and higher. The required optimal reverberation time has clearly different requirements for different types of music programs. For example, the violin solo is expected to have a shorter reverberation time, and the large symphony band ensemble is expected to have a longer reverberation time. It is desirable in use that the reverberation time of a hall be variable. The currently common variable reverberation solutions and the respective advantages and disadvantages are shown in the following table:

obviously, none of the three current mainstream solutions has a satisfactory version, and each has obvious drawbacks.

Disclosure of Invention

In view of the above, the present invention provides a variable reverberation system obtained by long-distance transmission of self-acoustic energy, which can solve at least some of the disadvantages and shortcomings of the conventional variable reverberation system.

The technical scheme of the invention is realized as follows:

a variable reverberation system obtained by long-distance transmission of own acoustic energy, comprising: an indoor space, wherein the indoor space comprises a sound source area and a sound receiving area; one end of each sound transmission pipeline is arranged corresponding to the sound source area, and the other end of each sound transmission pipeline is arranged corresponding to the sound receiving area; and the sound transmission pipeline is provided with a control valve, and the control valve is used for controlling the sound energy of the sound transmission pipeline.

As a further alternative of the variable reverberation system obtained by the long-distance transmission of the own sound energy, the length of the sound transmission duct is greater than the distance length between the sound source region and the sound receiving region.

As a further alternative to the variable reverberation system obtained by the long-distance transmission of the own sound energy, the pipe body of the sound transmission pipe is disposed outside the indoor space.

As a further alternative of the variable reverberation system obtained by long-distance transmission of the self sound energy, one end of the sound transmission pipe is provided on a wall surface, a floor, or a ceiling of the indoor space corresponding to the sound source region; the other end of the sound transmission pipeline is arranged on the wall surface, the floor or the ceiling of the indoor space corresponding to the sound receiving area.

As a further alternative to the variable reverberation system obtained by the long-distance transmission of the own sound energy, the sound transmission duct is sound-proof treated.

As a further alternative of the variable reverberation system obtained by the long-distance transmission of the own sound energy, the sound insulation treatment is to dispose soundproof cotton outside the sound transmission duct.

As a further alternative to the variable reverberation system obtained by the long-distance transmission of own acoustic energy, the sound transmission pipe is a metal pipe.

As a further alternative to the variable reverberation system obtained by long-distance transmission of self sound energy, the sound source region is a stage or a sound stage; the sound receiving area is an auditorium.

The invention has the following beneficial effects: the body type and the decorative effect of the indoor space are not obviously influenced, the tone quality and the tone quality level of the indoor space are kept consistent, and lower investment amount can be realized. And obtaining a sound transmission path independent from the indoor space by using the sound transmission pipeline, and radiating the sound transmission pipeline to an auditorium after obtaining sound energy to enable the auditorium to obtain longer-delay reverberation sound energy, so that the longer-delay reverberation sound energy and the reverberation sound energy provided by the indoor space form longer reverberation time than that brought by the original indoor space.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a variable reverberation system obtained by long-distance transmission of self-sound energy according to the present invention;

fig. 2 is a graph of acoustic energy decay for different reverberation times.

In the figure: 100. an indoor space; 110. a sound source region; 120. a sound receiving area; 200. a sound transmission pipe;

A. an acoustic energy attenuation curve for the indoor space; B. an acoustic energy attenuation curve for the first pipe; C. an acoustic energy attenuation curve of the second pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1, there is shown a variable reverberation system obtained by long distance transmission of own acoustic energy, comprising: an indoor space 100, wherein the indoor space 100 comprises a sound source area 110 and a sound receiving area 120; one end of each of the sound transmission pipes 200 is disposed corresponding to the sound source region 110, and the other end of each of the sound transmission pipes 200 is disposed corresponding to the sound receiving region 120. A control valve is arranged on the sound transmission pipeline 200.

For convenience of description, an end of the sound transmission duct 200 corresponding to the sound source region 110 is referred to as an input end, and an end of the sound transmission duct 200 corresponding to the sound receiving region 120 is referred to as an output end.

Specifically, in one aspect, the acoustic energy emitted by the acoustic source region 110 is transmitted within the indoor space 100 to the acoustic receiving region 120; on the other hand, the acoustic energy emitted from the acoustic source region 110 is received by the input end of the sound transmitting pipe 200 and then transmitted through the sound transmitting pipe 200, and the acoustic energy is radiated from the output end of the sound transmitting pipe 200 to the acoustic receiving region 120. The two aspects of acoustic energy combine to form a longer reverberation time than the original room space 100. And, the control valve can be controlled to change the cross-sectional area of the sound transmission pipe 200, so as to change the sound energy force passing through the sound transmission pipe, so as to adapt to occasions requiring different reverberation times.

Wherein, an impedance matching may be set at the output end, and the acoustic energy passing through the acoustic transmission pipe 200 is re-radiated to the sound receiving area 120 through the impedance matching. The output and input ends of the sound transmission duct 200 may be provided in the shape of a bell mouth to better receive sound and radiate sound.

Referring to fig. 2, a curve a is an acoustic energy attenuation curve of the indoor space 100; curve B is the acoustic energy attenuation curve for the first pipe; curve C is the acoustic energy attenuation curve for the second pipe. Wherein the first pipe is a sound transmission pipe 200 with a pipe length of X, the second pipe is a sound transmission pipe 200 with a pipe length of Y, and X is smaller than Y. As can be seen from fig. 2, the longer the length of the sound transmission duct 200, the longer the reverberation time. Therefore, a plurality of sound transmission pipes 200 can be provided, the sound transmission pipes 200 have different lengths, and the sound transmission pipes 200 are closed or opened through the control valve, so that the sound transmission pipes 200 with proper lengths can be selected when different reverberation times are needed. The data of the length and diameter of the pipe can be determined according to the specific situation of the indoor space, and the published materials and documents are referred to in the journal of acoustics, 1990(2), 81-90, Zhao and Ping, and in the journal of acoustics, chapter five, sound propagation in the pipe, northwest industry university, 2001.

It should be noted that, in order to obtain a delay effect of the acoustic energy passing through the sound transmission pipe 200, the length of the sound transmission pipe 200 is greater than the distance between the sound source region 110 and the sound receiving region 120.

In addition, in order to avoid the influence of the pipe body of the sound transmission pipe 200 on the sound energy transmitted in the indoor space 100 as much as possible, especially when a plurality of sound transmission pipes 200 are provided; therefore, the pipe body of the sound transmission pipe 200 may be disposed outside the indoor space 100, and only the output end and the input end of the sound transmission pipe 200 may be communicated with the indoor space 100; on this basis, the input end of the sound transmission duct 200 is disposed on the ceiling of the indoor space 100, corresponding to above the sound source area 110; and the output end of the sound transmission pipe 200 is disposed on the ceiling of the indoor space 100, corresponding to the upper side of the sound receiving area 120. Of course, the output end and the input end of the sound transmission duct 200 may be disposed on the wall surface or the bottom plate of the indoor space 100.

In order to avoid noise interference from the outside to the sound transmission duct 200, the sound transmission duct 200 is subjected to sound insulation treatment. For example, soundproof cotton is provided outside the sound transmission duct 200. In order to improve the sound transmission performance of the sound transmission pipe 200, the sound transmission pipe 200 is a metal pipe, such as aluminum or steel. Preferably, the radial cross-sectional areas of the sound transmission ducts 200 are the same, for example, if the sound transmission ducts 200 are circular pipes, the diameters of the sound transmission ducts 200 are not changed, that is, the diameters of all positions of the same sound transmission duct 200 are the same.

It should be noted that the indoor space 100 may be analogized to a space such as a concert hall, and the sound source area 110 may be regarded as a stage or a position of a performance stage in the concert hall; the sound receiving area 120 can be considered as a position of an auditorium in a concert hall.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.