CN205622838U - High -fidelity bluetooth sound - Google Patents
High -fidelity bluetooth sound Download PDFInfo
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- CN205622838U CN205622838U CN201620198886.XU CN201620198886U CN205622838U CN 205622838 U CN205622838 U CN 205622838U CN 201620198886 U CN201620198886 U CN 201620198886U CN 205622838 U CN205622838 U CN 205622838U
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- module
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- dac
- frequency
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Abstract
The utility model discloses a high -fidelity bluetooth sound, including signal connection's bluetooth module and microprocessor module, still include the frequency signal distribution module with microprocessor module signal connection to reach the first branch road and the second branch road that distribute module signal connection respectively with frequency signal, first branch road includes signal connection's DAC module, high pass filter module, power amplifier module and a speaker module in proper order, the second branch road includes signal connection's DAC module, low pass filter module, frequency selective amplifier module, power amplifier module and second speakers module in proper order, a speaker module is including parallelly connected tweeter unit and intermediate frequency loudspeaker unit, the second speakers module includes low frequency loudspeaker unit. The utility model discloses the effect that has the high -fidelity.
Description
Technical field
This utility model relates to Bluetooth audio device technical field, particularly relates to a kind of high-fidelity Bluetooth audio device.
Background technology
Bluetooth is a kind of low cost jumbo short-distance wireless communication specification, the sound equipment of embedded with bluetooth chip is commonly called Bluetooth audio device, it connects with bluetooth and replaces the stereo set that tradition wire rod connects, by being connected with bluetooth playback equipments such as mobile phone, panel computer or notebooks, reach conveniently purpose.Since Bluetooth audio device is released, it is gradually paid attention to by consumer by convenient feature.
But, it is a kind of wireless connections owing to bluetooth connects, it is signal to be first compressed be converted to radio signal be subsequently sent to receiver, receiver is again by changing signal and decoding compression, so, signal compression, launch, decompress and the loss to signal all can occur during transcoding, therefore can cause the loss in tonequality.
Utility model content
In view of this, the purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that the Bluetooth audio device of a kind of high-fidelity.
In order to solve above-mentioned technical problem, this utility model uses following scheme to realize:
A kind of high-fidelity Bluetooth audio device, the bluetooth module connected including signal and microprocessor module, also include the frequency signal distribution module being connected with microprocessor module signal, and the first branch road and the second branch road that module by signal is connected is distributed respectively with frequency signal, described first branch road includes the DAC module that signal connects successively, high pass filter block, power amplifier module and the first loudspeaker module, described second branch road includes the DAC module that signal connects successively, low pass filter blocks, frequency-selective amplifier module, power amplifier module and the second loudspeaker module, described first loudspeaker module includes tweeter unit and the mid frequency ludspeaker unit of parallel connection, described second loudspeaker module includes low-frequency speaker units.
Owing to the loss of signal can be caused during Bluetooth transmission, therefore the decline of audio can be caused, in this utility model, by frequency signal distribution module, signal is divided into two-way, wherein by DAC module during the first branch road (digital-to-analogue dress die change block), digital signal is converted into analogue signal, relatively low frequency is filtered out again by high pass filter block, in conjunction with power amplifier signal repaired and amplify, it is not only high-frequency signal by the signal of high pass filter, there is also the signal of some medium-high frequencies, so the first loudspeaker module high loudspeaker unit in parallel and mid frequency ludspeaker unit process signal, signal processing by the first branch road, make to play out audio from the first branch road, reduce the stiff sense of high-frequency signal, make the softer exquisiteness of sense of hearing of people；In second branch road, signal is through the process of low pass filter blocks, then carries out processing to low frequency signal by frequency-selective amplifier module, so that the low stress of audio in the second speaker broadcasting is better outstanding.By the first branch road and the process of the second branch road, obtain the audio of more preferably fidelity, the shortcoming during Bluetooth transmission can be overcome to a certain extent.
Described DAC module is made up of two DAC in parallel, and one of them DAC is in series with phase inverter.
DAC module is divided into two-way, wherein a road is sent directly into DAC(digital to analog converter), another road becomes polarity reversing signal through phase inverter and is re-fed into DAC, then it is mutually mixed from DAC signal out and another DAC signal out, equivalence bit number so can not only be provided, conversion accuracy can also be improved, improve tonequality performance.
Also including the casing for installing each module, described casing is cube structure, and its inside sidewalls is provided with the energy-absorbing portion of uniform flattened cylinder structure, and described energy-absorbing portion is filled with hydrargyrum.
Sound equipment operationally can shake, thus cause the resonance of whole casing, the stability of this resonance meeting acoustic circuit, thus the noise of instability can be generated, therefore it is provided with the energy-absorbing district of flattened cylinder structure, and is within it filled with hydrargyrum, when resonance occurs, crumple can occur and absorb resonance energy, it is to avoid resonance produces impact to circuit and improves noise reduction.
Acoustical cotton layer it is provided with inside the base plate of described casing.The low-frequency vibration noise that the acoustical cotton layer of bottom can absorb casing and ground sends, further improves the fidelity effect of sound equipment.
Compared with prior art, this utility model has the advantages that Bluetooth audio device is improved by this utility model, reduces the shortcoming that loss of signal causes tonequality to reduce so that sound is the most three-dimensional and plentiful.
Accompanying drawing explanation
Fig. 1 is embodiment 1 structured flowchart；
Fig. 2 is DAC module structured flowchart；
Fig. 3 is wall box structural representation；
Fig. 4 is box bottom structural representation.
Detailed description of the invention
In order to allow those skilled in the art be more fully understood that the technical solution of the utility model, below in conjunction with the accompanying drawings this utility model is further elaborated.
Embodiment 1
As shown in Figure 1, a kind of high-fidelity Bluetooth audio device, the bluetooth module connected including signal and microprocessor module, also include the frequency signal distribution module being connected with microprocessor module signal, and the first branch road and the second branch road that module by signal is connected is distributed respectively with frequency signal, described first branch road includes the DAC module that signal connects successively, high pass filter block, power amplifier module and the first loudspeaker module, described second branch road includes the DAC module that signal connects successively, low pass filter blocks, frequency-selective amplifier module, power amplifier module and the second loudspeaker module, described first loudspeaker module includes tweeter unit and the mid frequency ludspeaker unit of parallel connection, described second loudspeaker module includes low-frequency speaker units.As in figure 2 it is shown, described DAC module is made up of two DAC in parallel, and one of them DAC is in series with phase inverter.
As shown in Figures 3 and 4, also including the casing for installing each module, described casing is cube structure, is provided with the energy-absorbing portion 31 of uniform flattened cylinder structure inside its sidewall 3, and described energy-absorbing portion is filled with hydrargyrum.It is provided with acoustical cotton layer 41 inside the base plate 4 of described casing.
Claims (4)
1. a high-fidelity Bluetooth audio device, the bluetooth module connected including signal and microprocessor module, it is characterized in that, also include the frequency signal distribution module being connected with microprocessor module signal, and the first branch road and the second branch road that module by signal is connected is distributed respectively with frequency signal, described first branch road includes the DAC module that signal connects successively, high pass filter block, power amplifier module and the first loudspeaker module, described second branch road includes the DAC module that signal connects successively, low pass filter blocks, frequency-selective amplifier module, power amplifier module and the second loudspeaker module, described first loudspeaker module includes tweeter unit and the mid frequency ludspeaker unit of parallel connection, described second loudspeaker module includes low-frequency speaker units.
High-fidelity Bluetooth audio device the most according to claim 1, it is characterised in that described DAC module is made up of two DAC in parallel, and one of them DAC is in series with phase inverter.
High-fidelity Bluetooth audio device the most according to claim 1, it is characterised in that also include the casing for installing each module, described casing is cube structure, and its inside sidewalls is provided with the energy-absorbing portion of uniform flattened cylinder structure, and described energy-absorbing portion is filled with hydrargyrum.
High-fidelity Bluetooth audio device the most according to claim 3, it is characterised in that be provided with acoustical cotton layer inside the base plate of described casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620198886.XU CN205622838U (en) | 2016-03-16 | 2016-03-16 | High -fidelity bluetooth sound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620198886.XU CN205622838U (en) | 2016-03-16 | 2016-03-16 | High -fidelity bluetooth sound |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205622838U true CN205622838U (en) | 2016-10-05 |
Family
ID=57031656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620198886.XU Expired - Fee Related CN205622838U (en) | 2016-03-16 | 2016-03-16 | High -fidelity bluetooth sound |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205622838U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105635901A (en) * | 2016-03-16 | 2016-06-01 | 朱丽芬 | High-fidelity bluetooth sound equipment |
| CN106535063A (en) * | 2017-01-12 | 2017-03-22 | 珠海乐港科技有限公司 | Wireless network audio high-fidelity streaming media player |
-
2016
- 2016-03-16 CN CN201620198886.XU patent/CN205622838U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105635901A (en) * | 2016-03-16 | 2016-06-01 | 朱丽芬 | High-fidelity bluetooth sound equipment |
| CN106535063A (en) * | 2017-01-12 | 2017-03-22 | 珠海乐港科技有限公司 | Wireless network audio high-fidelity streaming media player |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161005 Termination date: 20180316 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |