CN101540942A - Miniature sound system - Google Patents

Abstract

A miniature sound system comprises a loudspeaker, a circuit board coupled with the loudspeaker and a sound cavity, wherein the sound cavity covers the loudspeaker and the circuit board, is provided with a resonance space and is provided with an opening corresponding to the sound production position of the loudspeaker. The miniature sound system integrates a signal processing unit, a loudspeaker unit and an audio resonance structure, and the volume of the sound cavity is less than 10 cubic centimeters, so that the volume of the loudspeaker and the listening effect can be simultaneously considered.

Description

micro sound system

technical field

The invention relates to a miniature audio system, in particular to a miniature audio system integrating a signal processing unit, a loudspeaker unit and an audio resonance structure.

Background technique

With the rapid development of electronic and institutional development and integration technologies, consumer electronic products with multimedia playback functions such as mobile phones, portable audio-visual players, personal digital assistants, notebook computers or tablet computers are becoming more and more common, and have even become part of our daily life. an integral part.

In addition to providing user electronic data processing, the above-mentioned consumer electronic devices are also equipped with multimedia application functions such as video playback, games, voice input, real-time video, and video and video capture. This has become the development direction of consumer electronic devices. Wherein, the video and audio playback function usually includes functions such as video signals for presenting images, audio signals for presenting sounds, or integration of images and sounds.

However, since the volume of consumer electronics products tends to be light, thin, and small, how to add as many functional modules as possible without increasing or even reducing the volume of the product has become an important topic for research and development in the industry.

After solving the problem of integrating multiple functional modules into a single consumer electronic product, the next problem to be faced is how to improve the quality of product function presentation. Specifically, for existing multimedia players (such as commercially available MP3 recording pens) that require external earphones or loudspeakers to play sound (audio) signals, if users want to listen to sound signals such as music, they must Wearing earphones or connecting external speakers often causes inconvenience in mobility, or requires extra space for earphones or speakers.

In order to solve this problem, a technology of integrating speakers into consumer electronic products has been proposed. For example, mobile phones or notebook computers have speakers, and users can play and listen to audio signals without external earphones or speakers. Existing consumer electronic products with loudspeakers, in order to take into account the volume of the product, must use a miniature audio system with a volume of less than 10 cubic centimeters or even 5 cubic centimeters, and the existing miniature audio system only has a speaker unit and does not have The audio signal processing unit must be driven by the consumer electronic product itself or externally before it can produce sound. In addition, the existing miniature audio system is limited by the space for consumer electronics products, and cannot combine the speaker unit with the resonant cavity and/or the reflection holes corresponding to different audio frequencies like ordinary speakers. The overall listening effect cannot be compared with external speakers of general size.

To sum up, how to provide a miniature audio system that can take both the volume of the speaker and the listening effect into account is an urgent problem to be solved by the industry in related fields.

Contents of the invention

In view of the above-mentioned shortcomings of the prior art, the present invention provides a micro-acoustic system, comprising: a speaker; a circuit board coupled to the speaker; There is an opening corresponding to the sound emitting position of the loudspeaker, wherein the volume of the sound cavity is less than 10 cubic centimeters.

Secondly, the present invention also provides a micro-acoustic system, including: a speaker; a circuit board coupled to the speaker; and a sound cavity, which has a first opening at a position corresponding to the circuit board to accommodate and connect the circuit board, The sound cavity and the circuit board cover the speaker, have a resonance space, and have a second opening corresponding to the sound emitting position of the speaker, wherein the volume of the sound cavity is less than 10 cubic centimeters.

Furthermore, the present invention also provides a miniature audio system, including: a speaker; a circuit board coupled to the speaker; The coupling position has a second opening, covers the speaker, and has a resonance space, wherein the volume of the sound cavity is less than 10 cubic centimeters.

In any one of the aforementioned forms of the present invention, the circuit board has: a signal receiving module for receiving sound signals; a signal filtering module for filtering the sound signals received by the sound signal receiving module and outputting sound signals of a specific frequency ; and a power adjustment module that amplifies or attenuates the power of the sound signal passing through the specific frequency and outputs it to the speaker.

In any one of the aforementioned forms of the present invention, the sound chamber and/or the circuit board may optionally have at least one reflective hole. The reflex holes are preferably treble, midrange and/or bass reflex holes.

In any one of the aforementioned forms of the present invention, the sound chamber has a volume of less than 5 cubic centimeters.

In any of the above-mentioned forms of the present invention, the micro-acoustic system of the present invention may also optionally include a spacer made of foam, silica gel or rubber, for example.

Compared with the prior art, the miniature audio system of the present invention has a volume of 10 cubic centimeters, or even less than 5 cubic centimeters, and integrates signal processing unit, speaker unit and audio resonance structure, so it can take into account both the volume of the speaker and the listening ability. Reward effect.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

1A to 1D are schematic structural views of the first embodiment of the micro-acoustic system of the present invention;

2A to 2C are three-dimensional exploded schematic diagrams of the second embodiment of the miniature audio system of the present invention;

3A to 3C are three-dimensional exploded schematic diagrams of the third embodiment of the micro-acoustic system of the present invention;

4A to 4C are three-dimensional exploded schematic diagrams of the fourth embodiment of the micro-acoustic system of the present invention;

5A to 5C are three-dimensional exploded schematic diagrams of the fifth embodiment of the micro-acoustic system of the present invention; and

6A to 6C are perspective exploded schematic diagrams of the sixth embodiment of the miniature sound system of the present invention.

Among them, reference signs

10 speakers

101 voice position

11 circuit board

Line 111

12 cavity

13 spacers

120 resonance space

121 first opening

122 second opening

22 cavity

220 resonance space

221 first opening

222 second opening

32 cavity

320 resonance space

321 first opening

322 second opening

323 reflective holes

Detailed ways

Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

First embodiment:

Please refer to FIG. 1A to FIG. 1D , which are respectively used to show a schematic structural view of the first embodiment of the miniature audio system of the present invention. As shown in the figure, the miniature audio system of the present invention includes a loudspeaker 10, a circuit board 11 and a sound cavity 12 .

The speaker 10 has a sound emitting position 101, and the speaker 10 may be, for example but not limited to, a treble speaker unit, a midrange speaker unit or a woofer unit.

The circuit board 11 is coupled with the speaker 10 . In this embodiment, the circuit board 11 may, for example, as shown in FIG. 1D, have a signal receiving module (not shown) for receiving a sound signal, filter the sound signal received by the sound signal receiving module, and output a sound signal of a specific frequency A signal filtering module (not shown), and a power adjustment module (not shown) that amplifies or attenuates the sound signal passing through the specific frequency and outputs it to the speaker, and is coupled to an external device through a line 111 . The circuit board 11 can be, for example, a rigid printed circuit board, a flexible printed circuit board or an integrated circuit board.

The signal receiving module can be, for example, a cable, a flexible circuit board or a connecting plug. The signal filtering module is a low-pass filter, a high-pass filter and/or a band-pass filter.

The sound cavity 12 covers the speaker 10 and the circuit board 11, and has a resonance space 120, and has a first opening 121 at the position corresponding to the sound of the speaker 10, and has a second opening 122 at the position corresponding to the circuit board 11, according to It is actually necessary to provide a signal receiving module, a signal filtering module of the sound signal and/or a power adjustment module to pass through the sound cavity 12, and to be coupled with an external device. The external device can, for example, provide power to the signal receiving module, signal filtering module, and power adjustment module Power supply module (not shown) with the speaker module. In this embodiment, the signal receiving module is coupled with the power supply module, that is, the signal receiving module can not only receive the sound signal, but also receive the operating power provided by the power supply module, and provide the power to the signal filter module and power adjustment module. In other embodiments, the sound chamber has a third opening (not shown), and the power supply module is coupled to the circuit board through the third opening.

Preferably, the micro-acoustic system of the present invention may optionally include a spacer 13. The spacer 13 may be, for example, made of foam, silica gel or rubber, etc., and has the functions of raising the speaker 10, insulating the speaker 10 from the circuit board 11, and The material is composed of materials that can absorb the vibration generated by the speaker 10 and the circuit board 11 and/or can block the micro-amplitude air convection effect generated when different sides of the speaker 10 produce sound.

In this embodiment, the volume of the sound chamber is less than 10 cubic centimeters, more preferably, the volume of the sound chamber is less than 5 cubic centimeters. The first opening 121 may be a single opening or a mesh-like opening composed of several openings.

Second embodiment:

Please refer to Figures 2A to 2C, which are respectively used to show a schematic structural view of the second embodiment of the miniature sound system of the present invention, as shown in the figure, the structure of the miniature sound system of the present invention is roughly the same as that of the first embodiment, and The difference is that this embodiment has two speakers 10 , so the circuit board 11 needs to be coupled with the two speakers 10 at the same time. On the other hand, the sound chamber 12 has two first openings 121 corresponding to the sound emitting positions of the speakers 10 .

It should be noted that in other embodiments of the present invention, the number of speakers 10 may exceed two. The circuit board 11 needs to be coupled with several speakers 10 at the same time, and the sound chamber 12 has a plurality of first openings 121 respectively corresponding to sound emitting positions of the speakers 10 .

The several speakers 10 can be connected to each other not only through the circuit board 11 , but also through flat wires, stranded wires, single-core wires, multi-core wires and/or connecting plugs.

Third embodiment:

Please refer to FIG. 3A to FIG. 3C , which are respectively used to show a schematic structural view of the third embodiment of the miniature sound system of the present invention. As shown in the figure, the structure of the miniature sound system of the present invention is roughly the same as that of the first embodiment, and It can be combined with the structure of the first embodiment, the difference is that the sound chamber 22 of this embodiment has a first opening 221 at the position corresponding to the circuit board 11 to accommodate and connect the circuit board 11, the sound chamber 22 and the circuit board 11 It covers the speaker 10 and has a resonant space 220 , and has a second opening 222 corresponding to the sound emitting position 101 of the speaker 10 .

Specifically, in this embodiment, the sound cavity 22 and the circuit board 11 jointly form the resonance space 220 , so the space and material cost occupied by the overlap of the circuit board 11 and the sound cavity 22 can be reduced.

Fourth embodiment:

Please refer to FIG. 4A to FIG. 4C , which are respectively used to show a schematic structural view of the fourth embodiment of the miniature sound system of the present invention. As shown in the figure, the structure of the miniature sound system of the present invention is roughly the same as that of the third embodiment, and Can be combined with the structure of the second embodiment, the difference is that this embodiment has two speakers 10, so the circuit board 11 needs to be coupled with the two speakers 10 at the same time, on the other hand, the sound chamber 22 has two corresponding speakers The second opening 222 at the sound emitting position of 10.

The same thing is that the sound cavity 22 has a first opening 221 at the position corresponding to the circuit board 11 to accommodate and connect the circuit board 11, the sound cavity 22 and the circuit board 11 cover the two speakers 10, and have a resonance space 220, and There is a second opening 222 at the sound emitting position 101 corresponding to the two speakers 10 .

Specifically, in this embodiment, the sound cavity 22 and the circuit board 11 jointly form the resonance space 220 , so the space and material cost occupied by the overlap of the circuit board 11 and the sound cavity 22 can be reduced.

It should be noted that in other embodiments of the present invention, the number of speakers 10 may exceed two. The circuit board 11 needs to be coupled with several speakers 10 at the same time, and the sound chamber 22 has several second openings 222 respectively corresponding to the sound emitting positions of the speakers 10 .

The several speakers 10 can be connected to each other not only through the circuit board 11 , but also through flat wires, stranded wires, single-core wires, multi-core wires and/or connecting plugs.

Fifth embodiment:

Please refer to Fig. 5A to Fig. 5C, which are respectively used to show the structure diagram of the fifth embodiment of the miniature sound system of the present invention. The same, and can be combined with the structure of the first or third embodiment, the difference is that the sound cavity 32 of this embodiment corresponds to the sound emitting position 101 of the speaker 10 with a first opening 321, and is coupled between the speaker 10 and the circuit board 11 The connected position has a second opening 322 , and covers the speaker 10 , and has a resonant space 320 . Specifically, in this embodiment, the circuit board 11 is located outside the sound chamber 32 and coupled to the speaker 10 through the second opening 322 .

Sixth embodiment:

Please refer to Fig. 6A to Fig. 6C, which are respectively used to show the schematic structural diagram of the sixth embodiment of the miniature sound system of the present invention, as shown in the figure, the miniature sound system of the present invention and the first, third or fifth embodiment The structures are substantially the same, and can be combined with the structure of any one of the first to fifth embodiments. The fifth embodiment will be described below. Compared with the fifth embodiment, the difference is that the sound chamber 32 of this embodiment further includes a reflection hole 323 .

In different embodiments, the reflective hole 323 can not only be set on the sound cavity 32 , but also can be set on the circuit board 11 or both on the circuit board 11 and the sound cavity 32 .

It should be noted that those with ordinary knowledge in the technical field of this case can make equivalent changes or replacements within the scope of the patent application of the present invention after reading the descriptions of the first to sixth embodiments above.

To sum up, the miniature audio system of the present invention has a volume of 10 cubic centimeters, or even less than 5 cubic centimeters, and integrates signal processing unit, speaker unit and audio resonance structure, so it can take into account both the volume of the speaker and the listening effect .

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (45)

1. a micro sound system is characterized in that, comprising:

Loud speaker;

Circuit board couples with this loud speaker; And

The sound chamber coats this loud speaker and this circuit board, and has resonant space, and in sounding position that should loud speaker is had first perforate, and in position that should circuit board is had second perforate.

2. micro sound system according to claim 1 is characterized in that, this circuit board has: the signal receiving module that receives voice signal; The voice signal that this voice signal receiver module is received carries out filtering, and the signal filtering module of the voice signal of output characteristic frequency; And the voice signal by this characteristic frequency carried out power amplification or decay and export the power regulation module of this loud speaker to.

3. micro sound system according to claim 2 is characterized in that, this circuit board couples with the power supply module that provides power supply to give this signal receiving module, this signal filtering module, this power regulation module and this loudspeaker module.

4. micro sound system according to claim 2 is characterized in that, this sound chamber has the 3rd perforate, and this power supply module couples by the 3rd perforate and this circuit board.

5. micro sound system according to claim 2 is characterized in that, this signal receiving module is winding displacement, flexible circuit board or attachment plug.

6. micro sound system according to claim 2 is characterized in that, this signal filtering module is low pass filter, high pass filter and/or band pass filter.

7. micro sound system according to claim 1 is characterized in that, comprises several loud speakers.

8. micro sound system according to claim 7 is characterized in that, uses this circuit board, winding displacement, twisted wire, single-core line, split conductor and/or attachment plug to interconnect between these several loud speakers.

9. micro sound system according to claim 1 is characterized in that, this circuit board is hard printed circuit board, soft printed circuit board (PCB) or surface-mounted integrated circuit.

10. micro sound system according to claim 1 is characterized in that, this sound chamber and/or this circuit board have at least one reflection hole.

11. micro sound system according to claim 10 is characterized in that, this reflection hole is high pitch, middle pitch and/or bass reflex hole.

12. micro sound system according to claim 1 is characterized in that, the volume in this sound chamber is below 10 cubic centimeters.

13. micro sound system according to claim 1 is characterized in that, this first perforate is made up of several perforates.

14. micro sound system according to claim 1 is characterized in that, also comprises distance piece, is arranged between this loud speaker and this circuit board.

15. micro sound system according to claim 14 is characterized in that, this distance piece is that foam, silica gel or rubber constitute part.

16. a micro sound system is characterized in that, comprising:

Loud speaker;

Circuit board couples with this loud speaker; And

The sound chamber, in position that should circuit board being had ccontaining and connecting first perforate of this circuit board, this sound chamber and this circuit board coat this loud speaker, and have resonant space, and in sounding position that should loud speaker is had second perforate.

17. micro sound system according to claim 16 is characterized in that, this circuit board has: the signal receiving module that receives voice signal; The voice signal that this voice signal receiver module is received carries out filtering, and the signal filtering module of the voice signal of output characteristic frequency; And the voice signal by this characteristic frequency carried out power amplification or decay and export the power regulation module of this loud speaker to.

18. micro sound system according to claim 17 is characterized in that, this circuit board couples with the power supply module that provides power supply to give this signal receiving module, this signal filtering module, this power regulation module and this loudspeaker module.

19. micro sound system according to claim 17 is characterized in that, this sound chamber has the 3rd perforate, and this power supply module couples by the 3rd perforate and this circuit board.

20. micro sound system according to claim 17 is characterized in that, this signal receiving module is winding displacement, flexible circuit board or attachment plug.

21. micro sound system according to claim 17 is characterized in that, this signal filtering module is low pass filter, high pass filter and/or band pass filter.

22. micro sound system according to claim 16 is characterized in that, comprises several loud speakers.

23. micro sound system according to claim 22 is characterized in that, uses this circuit board, winding displacement, twisted wire, single-core line, split conductor and/or attachment plug to interconnect between these several loud speakers.

24. micro sound system according to claim 16 is characterized in that, this circuit board is hard printed circuit board, soft printed circuit board (PCB) or surface-mounted integrated circuit.

25. micro sound system according to claim 16 is characterized in that, this sound chamber and/or this circuit board have at least one reflection hole.

26. micro sound system according to claim 25 is characterized in that, this reflection hole is high pitch, middle pitch and/or bass reflex hole.

27. micro sound system according to claim 16 is characterized in that, the volume in this sound chamber is below 10 cubic centimeters.

28. micro sound system according to claim 16 is characterized in that, this first perforate is made up of several perforates.

29. micro sound system according to claim 16 is characterized in that, also comprises distance piece, is arranged between this loud speaker and this circuit board.

30. micro sound system according to claim 29 is characterized in that, this distance piece is that foam, silica gel or rubber constitute part.

31. a micro sound system is characterized in that, comprising:

Loud speaker;

Circuit board couples with this loud speaker; And

The sound chamber has first perforate to sounding position that should loud speaker, and has second perforate in the position that this loud speaker and this circuit board couple, and coats this loud speaker, and has resonant space.

32. micro sound system according to claim 31 is characterized in that, this circuit board has: the signal receiving module that receives voice signal; The voice signal that this voice signal receiver module is received carries out filtering, and the signal filtering module of the voice signal of output characteristic frequency; And the voice signal by this characteristic frequency carried out power amplification or decay and export the power regulation module of this loud speaker to.

33. micro sound system according to claim 32 is characterized in that, this circuit board couples with the power supply module that provides power supply to give this signal receiving module, this signal filtering module, this power regulation module and this loudspeaker module.

34. micro sound system according to claim 32 is characterized in that, this sound chamber has the 3rd perforate, and this power supply module couples by the 3rd perforate and this circuit board.

35. micro sound system according to claim 32 is characterized in that, this signal receiving module is winding displacement, flexible circuit board or attachment plug.

36. micro sound system according to claim 32 is characterized in that, this signal filtering module is low pass filter, high pass filter and/or band pass filter.

37. micro sound system according to claim 31 is characterized in that, comprises several loud speakers.

38. according to the described micro sound system of claim 37, it is characterized in that, use this circuit board, winding displacement, twisted wire, single-core line, split conductor and/or attachment plug to interconnect between these several loud speakers.

39., it is characterized in that this circuit board is hard printed circuit board, soft printed circuit board (PCB) or surface-mounted integrated circuit according to the described micro sound system of claim 38.

40. micro sound system according to claim 31 is characterized in that, this sound chamber and/or this circuit board have at least one reflection hole.

41., it is characterized in that this reflection hole is high pitch, middle pitch and/or bass reflex hole according to the described micro sound system of claim 40.

42. micro sound system according to claim 31 is characterized in that, the volume in this sound chamber is below 10 cubic centimeters.

43. micro sound system according to claim 31 is characterized in that, this first perforate is made up of several perforates.

44. micro sound system according to claim 31 is characterized in that, also comprises distance piece, is arranged between this loud speaker and this circuit board.

45., it is characterized in that this distance piece is that foam, silica gel or rubber constitute part according to the described micro sound system of claim 44.

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