CN208924498U - The multimedia equipment of interchangeable active loudspeaker mould group and its composition - Google Patents
The multimedia equipment of interchangeable active loudspeaker mould group and its composition Download PDFInfo
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- CN208924498U CN208924498U CN201821842908.7U CN201821842908U CN208924498U CN 208924498 U CN208924498 U CN 208924498U CN 201821842908 U CN201821842908 U CN 201821842908U CN 208924498 U CN208924498 U CN 208924498U
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- loudspeaker
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- active loudspeaker
- audio signal
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Abstract
A kind of interchangeable active loudspeaker mould group, including interface unit, control circuit unit, loudspeaker unit, wherein, the control circuit unit includes: D class audio frequency filter, and the D class audio frequency filter obtains target audio signal after the audio signal inputted from interface unit is filtered out D class carrier signal；Bandwidth modulation device, the bandwidth modulation device modulate target audio signal to scheduled bandwidth；The signal that the bandwidth modulation device exports is amplified and pushes loudspeaker unit by power amplifier, the power amplifier；Power rectifier and control module, the power rectifier and control module provide power supply to the power amplifier.The beneficial effects of the utility model are: promoting output power under the premise of loudspeaker overall volume remains unchanged, to obtain bigger sound output, more selected to user, sound frequency range can customize.
Description
Technical field
The utility model relates to laptop structures to design applied technical field.
Background technique
Existing notebook computer loudspeaker is connected by connecting line with interface, and rated output power is fixed and by being
The CODEC of system is limited, such as 1.5W or 2W, the load that can be pushed be also relatively-stationary such as common 4 ohm or
8 ohm.Therefore design place, has set the specification of loudspeaker, then the resistance of peak power output and loudspeaker is just all solid
It is fixed.If user wants to play louder sound, there is no other method other than improving output power, but computer is raised
The rated power of sound device has been locked, in addition, the output power of loudspeaker is also limited by the power amplifier of system.If it is desired to
Bass effect is promoted, and needs replacing more low-impedance loudspeaker, such as 3 ohm or 2 ohm, and the loudspeaker of this specification is direct
Access is used to drive the power amplifier of 4 ohm or 8 ohm, frequently can lead to overcurrent protection, leads to these inconveniences
The reason is that existing loudspeaker can not remake and replace.
Summary of the invention
In view of the deficienciess of the prior art, the purpose of the utility model is to provide a kind of new design, it can be limited
Space under the premise of promoted loudspeaker rated power and promoted loudspeaker sound effect.
To achieve the above objectives, the utility model provides a kind of interchangeable active loudspeaker mould group, including interface list
Member, control circuit unit, loudspeaker unit, wherein the control circuit unit includes: D class audio frequency filter, the D
Class audio frequency filter obtains target audio signal after the audio signal inputted from interface unit is filtered out D class carrier signal；Bandwidth
Modulator, the bandwidth modulation device modulate target audio signal to scheduled bandwidth；Power amplifier, the power are put
The signal that the bandwidth modulation device exports is amplified and pushes loudspeaker unit by big device；Power rectifier and control module, it is described
Power rectifier and control module to the power amplifier provide power supply.
Preferably, the interface unit includes audio input pin, grounding pin, VCC pin, DET pin, described
Audio input pin input audio signal, the grounding pin, VCC pin input power signal, the DET pin input
For judging that is accessed is the judgement signal of active loudspeaker or passive speaker.
Preferably, the specification of the power amplifier and the specification of loudspeaker unit match.
Preferably, the interface unit is located at the front end of control circuit unit, and the loudspeaker unit is located at control
The rear end of circuit unit.
Preferably, the bandwidth modulation device by the frequency band of target audio signal be limited in 250Hz or less with export weight it is low
Audio fruit.
Preferably, the frequency band of target audio signal is limited between 10kHz to 16kHz with defeated by the bandwidth modulation device
High pitch effect out.
Another aspect according to the present utility model provides a kind of multimedia equipment, including as described above interchangeable
Active loudspeaker mould group.
Preferably, including a plurality of interchangeable active loudspeaker mould groups, each interchangeable active loudspeaker
The loudspeaker unit of mould group apparent size having the same and interface specification and different model.
Preferably, the sliding rail fixed position including active loudspeaker mould group, fixed position is arranged in, described is interchangeable
Active loudspeaker mould group is movably disposed on the sliding rail.
Preferably, the multimedia equipment include mobile phone, it is laptop, desktop computer, any in tablet computer
It is a kind of.
The beneficial effects of the utility model are: output power is promoted under the premise of loudspeaker overall volume remains unchanged, so as to
Bigger sound output is obtained, is more selected to user, sound frequency range can customize.
Detailed description of the invention
Attached drawing 1 is the loudspeaker integral layout of the utility model；
Attached drawing 2 is the circuit topological structure of the utility model.
Specific embodiment
The preferred embodiment of the utility model is described in detail below, so that the advantages of the utility model and feature energy
It is easier to be readily appreciated by one skilled in the art, to be more clearly defined the protection scope of the utility model.
Attached drawing 1 is the loudspeaker integral layout of the utility model, and the layout of the interchangeable active loudspeaker mould group includes
Interface unit 1, control circuit unit 2, loudspeaker unit 3, in order to keep compatible with the shape of passive speaker, interface unit 1
Positioned at the front end of control circuit unit 2, loudspeaker unit 3 is located at the rear end of control circuit unit 2.
Attached drawing 2 is the circuit topological structure of the utility model, and control circuit unit 2 includes D class audio frequency filter 4, bandwidth
Modulator 5, power amplifier 6, power rectifier and control module 7.In order to keep the interface compatibility with passive speaker, the present invention
Input signal source still use the signal of passive speaker, input comes from interface unit 1, but carries in the signal with D class
Wave, so D class audio frequency filter obtains target audio letter after the audio signal inputted from interface unit is filtered out D class carrier signal
Number, be re-fed into bandwidth modulation device 5 and modulate target audio signal to scheduled bandwidth: need the loudspeaker of supper bass effect when
It waits, frequency band is limited in 250Hz hereinafter, when needing high pitch loudspeaker effect by bandwidth modulation circuit, bandwidth modulation circuit
Frequency band is limited between 10kHz to 16kHz.Finally the signal that bandwidth modulation device exports is sent in power amplifier 6 and is carried out
Amplification pushes loudspeaker unit 3 to make a sound, and power rectifier and control module 7 then provide power supply to power amplifier 6.In order to
It is capable of providing more high-output power and matches heavier load, the selection needs and loudspeaker unit 3 of power amplifier 6 are kept
Unanimously.
Existing speaker interface is all each two signals of left and right loudspeaker: L+/L- or R+/R- under normal circumstances.This
Scheme is related to redefining for loudspeaker output interface pin, and the appearance of welding bell group shares
Table
As it can be seen from table 1 new pin has defined more than original pin 3 signals in addition to audio input pin, connect
Ground pin, VCC pin and DET pin, new loudspeaker is on interface and conventional loudspeakers keep compatibility.Extra 3
There are two purposes for pin, first is that input power signal provides power supply to active loudspeaker, but then input judgement by DET pin
Signal come tell CODEC either system, what is be currently accessed is active or passive loudspeaker.
Therefore, the active loudspeaker mould group in this programme can be applied to various multimedia equipments, such as mobile phone, notebook
Computer, desktop computer, any one in tablet computer.It may include multiple alternatively active raise in the multimedia equipment
Sound device mould group, each alternatively active loudspeaker mould group apparent size having the same and interface specification and different model
Loudspeaker unit, apparent size same with passive speaker, the position of interface will be made into according to the active loudspeaker of this programme
It sets and is consistent, PIN foot definition keeps compatibility, interchangeable, the output that sound is bigger provided in limited dimensional space
Unit, and the respectively sound quality unit with characteristic, for example, the power of loudspeaker can be 3W, 5W, 7W, the impedance of loudspeaker can be with
Customization, for example 2 ohm or 3 ohm can be done, it needs to be matched with power amplifier.
In one embodiment, the fixed position of active loudspeaker mould group is provided on multimedia equipment, it can in fixed position
Sliding rail is arranged, and alternatively active loudspeaker mould group is movably disposed on sliding rail.When replacement, it is only necessary to by nothing
Source SPK is withdrawn from sliding rail, then active SPK is pushed into as a whole, replacement can be completed, therefore protect in loudspeaker overall volume
Hold it is constant under the premise of, promote output power, to obtain bigger sound output, more selected to user, and sound
Frequency range can customize.
Embodiment of above is only to illustrate the technical ideas and features of the present invention, and its object is to allow be familiar with this skill
The people of art understands the content of the utility model and is implemented, and does not limit the protection scope of the present invention, and all
It is encompassed by the protection scope of the utility model according to the equivalent change or modification that the spirit of the present invention is substantially done.
Claims (10)
1. a kind of interchangeable active loudspeaker mould group, it is characterised in that: including interface unit, control circuit unit, loudspeaker
Unit, wherein the control circuit unit includes:
D class audio frequency filter, the audio signal inputted from interface unit is filtered out D class carrier wave by the D class audio frequency filter to be believed
Target audio signal is obtained after number；
Bandwidth modulation device, the bandwidth modulation device modulate target audio signal to scheduled bandwidth；
The signal that the bandwidth modulation device exports is amplified and pushes loudspeaker list by power amplifier, the power amplifier
Member；
Power rectifier and control module, the power rectifier and control module provide power supply to the power amplifier.
2. interchangeable active loudspeaker mould group according to claim 1, it is characterised in that: the interface unit includes
Audio input pin, grounding pin, VCC pin, DET pin, the audio input pin input audio signal, described connects
Ground pin, VCC pin input power signal, the DET pin input are active loudspeaker or nothing for judge access
The judgement signal of source loudspeaker.
3. interchangeable active loudspeaker mould group according to claim 1, it is characterised in that: the power amplifier
Specification and the specification of loudspeaker unit match.
4. interchangeable active loudspeaker mould group according to claim 1, it is characterised in that: the interface unit is located at
The front end of control circuit unit, the loudspeaker unit are located at the rear end of control circuit unit.
5. interchangeable active loudspeaker mould group according to claim 1, it is characterised in that: the bandwidth modulation device will
The frequency band of target audio signal is limited in 250Hz or less to export supper bass effect.
6. interchangeable active loudspeaker mould group according to claim 1, it is characterised in that: the bandwidth modulation device will
The frequency band of target audio signal is limited between 10kHz to 16kHz to export high pitch effect.
7. a kind of multimedia equipment, it is characterised in that: including such as described in any one of claims 1 to 6 alternatively active
Loudspeaker mould group.
8. multimedia equipment according to claim 7, it is characterised in that: including a plurality of as any in claim 1 to 6
Interchangeable active loudspeaker mould group described in, each interchangeable active loudspeaker mould group appearance having the same
The loudspeaker unit of size and interface specification and different model.
9. multimedia equipment according to claim 8, it is characterised in that: including the fixed position of active loudspeaker mould group, set
The sliding rail in fixed position is set, the interchangeable active loudspeaker mould group is movably disposed on the sliding rail.
10. multimedia equipment according to claim 7, it is characterised in that: the multimedia equipment includes mobile phone, notes
This computer, desktop computer, any one in tablet computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821842908.7U CN208924498U (en) | 2018-11-09 | 2018-11-09 | The multimedia equipment of interchangeable active loudspeaker mould group and its composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821842908.7U CN208924498U (en) | 2018-11-09 | 2018-11-09 | The multimedia equipment of interchangeable active loudspeaker mould group and its composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208924498U true CN208924498U (en) | 2019-05-31 |
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ID=66711855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821842908.7U Active CN208924498U (en) | 2018-11-09 | 2018-11-09 | The multimedia equipment of interchangeable active loudspeaker mould group and its composition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208924498U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111510803A (en) * | 2020-04-22 | 2020-08-07 | 歌尔科技有限公司 | Sound box and sound box system |
| US20230059333A1 (en) * | 2021-08-18 | 2023-02-23 | Cirrus Logic International Semiconductor Ltd. | Haptics signal generation |
| WO2023169721A1 (en) | 2022-03-09 | 2023-09-14 | Seidler Juergen | Active loudspeaker with acoustically decoupled and/or thermally coupled modules |
-
2018
- 2018-11-09 CN CN201821842908.7U patent/CN208924498U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111510803A (en) * | 2020-04-22 | 2020-08-07 | 歌尔科技有限公司 | Sound box and sound box system |
| US20230059333A1 (en) * | 2021-08-18 | 2023-02-23 | Cirrus Logic International Semiconductor Ltd. | Haptics signal generation |
| WO2023169721A1 (en) | 2022-03-09 | 2023-09-14 | Seidler Juergen | Active loudspeaker with acoustically decoupled and/or thermally coupled modules |
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