阅读说明：本技术 一种声传播系统 (Sound propagation system ) 是由 羊箭锋 周怡 吴彬彬 严荣慧 于 2021-07-27 设计创作，主要内容包括：本发明涉及一种声传播系统,包括平面谐振电路,平面谐振电路包括平面谐振体和永磁体,平面谐振体包括金属层和柔性膜基材层,金属层压合在柔性膜基材层上；其中平面谐振体包括多个平面谐振单元,多个平面谐振单元呈阵列分布。本发明设计一体式的平面谐振体,解决了现有技术因结构独立而导致的结构占用尺寸较大以及音响振动频率被限定在固定范围内的问题,而且平面谐振体包括多个平面谐振单元,多个平面谐振单元呈阵列分布,能够实现频率精准控制,显著提高了声音品质。(The invention relates to an acoustic transmission system, which comprises a planar resonant circuit, wherein the planar resonant circuit comprises a planar resonator body and a permanent magnet, the planar resonator body comprises a metal layer and a flexible film substrate layer, and the metal layer is pressed on the flexible film substrate layer; the planar resonance body comprises a plurality of planar resonance units, and the planar resonance units are distributed in an array. The invention designs an integrated planar resonator, solves the problems that the structure occupies larger size and the sound vibration frequency is limited in a fixed range due to the independent structure in the prior art, and the planar resonator comprises a plurality of planar resonance units which are distributed in an array manner, so that the frequency can be accurately controlled, and the sound quality is obviously improved.)

1. The sound transmission system is characterized by comprising a planar resonant circuit, wherein the planar resonant circuit comprises a planar resonator body and a permanent magnet, the planar resonator body comprises a metal layer and a flexible film substrate layer, and the metal layer is pressed on the flexible film substrate layer;

the planar resonance body comprises a plurality of planar resonance units, and the planar resonance units are distributed in an array.

2. The sound propagation system of claim 1, wherein: the distributing of the planar resonant units in an array comprises distributing the planar resonant units according to a one-dimensional line array.

3. The sound propagation system of claim 2, wherein: each planar resonance unit is independently provided, and an input signal is independently inputted to each planar resonance unit.

4. The sound propagation system of claim 3, wherein: the input signal can be edited to regulate the frequency of the sound emitting structure of each planar resonant unit.

5. The sound propagation system of claim 1, wherein: the planar resonant units are distributed in an array mode, and the planar resonant units are distributed according to a two-dimensional planar array.

6. The sound propagation system of claim 1, wherein: the distributing of the plurality of planar resonant units in the array comprises distributing the plurality of planar resonant units according to a three-dimensional spherical array.

7. The sound propagation system of claim 6, wherein: the planar resonant units are symmetrically distributed on the surface of the sphere.

8. The sound propagation system of claim 7, wherein: the sounding structure of each planar resonance unit is conformal on the surface of the sphere, and the permanent magnet is positioned at the center of the sphere.

9. The sound propagation system of claim 1, wherein: and the metal layer and the flexible film substrate layer are pressed in a hot pressing mode.

10. The sound propagation system of claim 1 or 9, wherein: the metal layer includes a planar coil.

Technical Field

The present invention relates to the field of sound transmission technologies, and in particular, to a sound transmission system and a communication terminal.

Background

The traditional sound propagation process (e.g., acoustic vibration principle) is mainly the vibration sound production of the vibrator plus the sound production of the paper tympanic membrane speaker. The general principle is that weak signals of a microphone enter a power amplifier pre-stage for amplification and rendering, the signals are sent to a post-stage for amplification, then signal current is output to a loudspeaker voice coil, different vibration amplitudes are generated through the current strong and weak voice coil to start vibration, and then a cone of the loudspeaker is shaken to make sound.

The conventional sound vibration structure comprises a vibration circuit, a coil and a vibration membrane (as shown in fig. 1), wherein the vibration circuit can be regarded as a sound source, the sound source generates voltage signals with different amplitudes, the voltage signals are input into the coil to generate different alternating currents, and finally the vibration membrane is triggered to generate sound. Therefore, a general diaphragm structure needs to form a "horn cavity", so that air vibration can be more conveniently formed to perform sound transmission. Wherein the material properties of the diaphragm will affect the efficiency and quality of sound propagation.

For example, the basic principle of the loudspeaker includes a magnetic loudspeaker, a piezoelectric loudspeaker, an electrostatic field loudspeaker and the like, and the vibration is generated by utilizing the change of the current direction in a coil, and then the cone is induced to vibrate, so that sound with different frequencies is formed. From the structure, its coil and cone are independent structural design, and its structure occupies the size great, and the fixed back of size material, because the adjustable range of coil is fixed, the stereo set vibration frequency of its formation will be injectd in fixed within range, and the vibration transmission process can produce the loss of energy moreover to lead to the sound quality to reduce.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defects of large occupied size of the structure, limited fixed range of sound vibration frequency, low sound quality and the like in the prior art.

In order to solve the technical problem, the invention provides an acoustic transmission system, which comprises a planar resonant circuit, wherein the planar resonant circuit comprises a planar resonator body and a permanent magnet, the planar resonator body comprises a metal layer and a flexible film substrate layer, and the metal layer is pressed on the flexible film substrate layer;

the planar resonance body comprises a plurality of planar resonance units, and the planar resonance units are distributed in an array.

In one embodiment of the present invention, the distributing the plurality of planar resonant units in an array includes distributing the plurality of planar resonant units in a one-dimensional line array.

In one embodiment of the present invention, each planar resonant cell is independently provided, and an input signal is independently input to each planar resonant cell.

In one embodiment of the invention, the input signal can be edited to tune the frequency of the sound emitting structure of each planar resonant unit.

In one embodiment of the present invention, the distributing the plurality of planar resonant cells in an array includes distributing the plurality of planar resonant cells in a two-dimensional planar array.

In one embodiment of the present invention, the distributing the plurality of planar resonant cells in an array includes distributing the plurality of planar resonant cells in a three-dimensional spherical array.

In one embodiment of the invention, the plurality of planar resonant cells are symmetrically distributed on the surface of the sphere.

In one embodiment of the invention, the sound emitting structure of each planar resonance unit is conformal to the surface of the sphere, and the permanent magnet is located at the center of the sphere.

In an embodiment of the present invention, the metal layer and the flexible film substrate layer are laminated by hot pressing.

In one embodiment of the invention, the metal layer comprises a planar coil.

Compared with the prior art, the technical scheme of the invention has the following advantages:

the invention designs an integrated planar resonator, solves the problems that the structure occupies larger size and the sound vibration frequency is limited in a fixed range due to the independent structure in the prior art, and the planar resonator comprises a plurality of planar resonance units which are distributed in an array manner, so that the frequency can be accurately controlled, and the sound quality is obviously improved.

Drawings

In order that the present disclosure may be more readily and clearly understood, reference will now be made in detail to the present disclosure, examples of which are illustrated in the accompanying drawings.

Fig. 1 is a prior art acoustic vibration structure.

Fig. 2 is a schematic structural view of the acoustic propagation system of the present invention.

Fig. 3 is a schematic structural view of a planar resonator body of the present invention.

FIG. 4 is a schematic structural diagram of the planar resonant unit of the present invention with a one-dimensional linear array distribution.

Fig. 5 is a schematic structural diagram of the planar resonant unit of the present invention distributed in a two-dimensional planar array.

Fig. 6 is a schematic structural diagram of the planar resonant unit of the present invention distributed by using a three-dimensional ball array.

Description of reference numerals: 100. a planar resonator body; 110. a metal layer; 120. a flexible film substrate layer; 130. a planar resonance unit; 200. and a permanent magnet.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

Referring to fig. 2 to 6, the present invention provides an acoustic transmission system, which includes a planar resonant circuit, the planar resonant circuit includes a planar resonator body 100 and a permanent magnet 200, the planar resonator body 100 includes a metal layer 110 and a flexible film substrate layer 120, and the metal layer 110 is laminated on the flexible film substrate layer 120.

The sound production principle of the planar resonant circuit is as follows: when alternating current passes through the planar resonator body 100, different magnetic fields are generated, and force interaction is generated between the planar resonator body and the permanent magnet 200 at the bottom, so that vibration sound is generated.

As shown in fig. 3, the first layer is a metal layer 110, which can be processed into planar coils with various parameters according to actual requirements; the second layer is a flexible film substrate layer 120, and the flexible film substrate with better vibration characteristic is selected as the material, so that sound production is facilitated; the metal layer 110 and the flexible film substrate layer 120 may be pressed together by a hot press.

The planar resonator 100 includes a plurality of planar resonator units 130, and the planar resonator units 130 are distributed in an array.

In an embodiment of the present invention, referring to fig. 4, the distributing the planar resonant units 130 in an array according to the present invention includes distributing the planar resonant units 130 in a one-dimensional array. Each planar resonance unit 130 is independently set, an input signal is independently input to each planar resonance unit 130, and the input signal can be edited to regulate and control the frequency of the sound emission structure of each planar resonance unit 130.

In an embodiment of the present invention, please refer to fig. 5, in which the planar resonant units 130 are distributed in an array according to the present invention, the planar resonant units 130 are distributed in a two-dimensional array, and the area of the sounding structure can be increased or decreased according to the requirement, and the sounding structure can be combined into different shapes due to the flexible film substrate layer 120.

In an embodiment of the present invention, referring to fig. 6, the distributing the planar resonant units 130 in an array according to the present invention includes distributing the planar resonant units 130 in a three-dimensional spherical array. Due to the adoption of the flexible film substrate layer 120, the sounding structure of each planar resonance unit 130 is conformal on the surface of the sphere, the permanent magnet 200 is positioned at the center of the sphere, and the planar resonance units 130 are symmetrically distributed on the surface of the sphere. Each planar resonance unit 130 (conformal to the surface of the ball) can be controlled by an independent programmable current, and a multi-channel reverberation control rule can be formulated through acoustic simulation, so that functions of spatial sound mixing, stereo surround and the like can be obtained.

The voice coil cone integrated design based on the flexible film substrate is adopted, the complex three-dimensional design is eliminated in space, and the miniaturization design of a sounding structure is facilitated. The system structure adopts an array design, and sounding structures in different frequency ranges can be designed by adopting different coil scale parameters. The sounding product adopting the planar array resonant circuit can be designed into a one-dimensional line array, a two-dimensional surface array and a three-dimensional ball array, the sounding frequency can be controlled by programming and controlling the input voltage parameter, and the functions of spatial sound mixing, stereo surrounding and the like which cannot be realized by a single sound box can be realized by adjusting the spatial distribution of the array.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the spirit or scope of the invention.