CN105635901A - High-fidelity bluetooth sound equipment - Google Patents
High-fidelity bluetooth sound equipment Download PDFInfo
- Publication number
- CN105635901A CN105635901A CN201610147211.7A CN201610147211A CN105635901A CN 105635901 A CN105635901 A CN 105635901A CN 201610147211 A CN201610147211 A CN 201610147211A CN 105635901 A CN105635901 A CN 105635901A
- Authority
- CN
- China
- Prior art keywords
- module
- dac
- sound equipment
- signal
- loudspeaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920000742 Cotton Polymers 0.000 claims description 4
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 4
- 229910052753 mercury Inorganic materials 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
- H04R1/2884—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of the enclosure structure, i.e. strengthening or shape of the enclosure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
- H04R2201/028—Structural combinations of loudspeakers with built-in power amplifiers, e.g. in the same acoustic enclosure
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention discloses high-fidelity bluetooth sound equipment, which comprises a bluetooth module and a microprocessor module, which are in signal connection. The high-fidelity bluetooth sound equipment also comprises a frequency signal distribution module in signal connection with the microprocessor module, and a first branch and a second branch, wherein the first branch and the second branch are connected with the frequency signal distribution module. The first branch comprises a DAC module, a high-pass filter module, a power amplifier module and a first loudspeaker module, which are in signal connection in sequence. The second branch comprises a DAC module, a low-pass filter module, a frequency-selecting amplifier module, a power amplifier module and a second loudspeaker module, which are in signal connection in sequence. The first loudspeaker module comprises a high-frequency loudspeaker unit and a middle-frequency loudspeaker unit, which are connected in parallel. The second loudspeaker module comprises a low-frequency loudspeaker unit. The bluetooth sound equipment has a high-fidelity effect.
Description
Technical field
The present invention relates to bluetooth sound technique field, particularly relate to a kind of high-fidelity bluetooth sound equipment.
Background technology
Bluetooth is the short-distance wireless communication specification of a kind of low cost Large Copacity, the sound equipment of embedded with bluetooth chip is called as bluetooth sound equipment usually, it connects the stereo set replacing tradition wire rod and connecting with bluetooth, by being connected with bluetooth playback equipments such as mobile phone, panel computer or notebooks, reach conveniently object. Since bluetooth sound equipment is released, it relies on feature easily to be paid attention to by human consumer gradually.
But, connect due to bluetooth is a kind of wireless connections, it is that signal first carries out compressing and converting is that then tick is sent to receiving apparatus, receiving apparatus again by carrying out conversion with decoding compressed to signal, so, in the compression of signal, transmitting, solution pressure with in turning the process of code, the loss to signal all can occur, therefore can cause the loss in tonequality.
Summary of the invention
In view of this, it is an object of the invention to overcome the deficiencies in the prior art, it is provided that the bluetooth sound equipment of a kind of high-fidelity.
In order to solve the problems of the technologies described above, the present invention adopts following scheme to realize:
A kind of high-fidelity bluetooth sound equipment, comprise bluetooth module and microprocessor module that signal connects, also comprise the frequency signal distribution module being connected with microprocessor module signal, and the first branch road being connected with frequency signal distribution module signal respectively and the 2nd branch road, described first branch road comprises the DAC module that signal connects successively, high pass filter block, power amplifier module and the first loudspeaker module, described 2nd branch road comprises the DAC module that signal connects successively, low pass filter blocks, frequency-selecting amplifier module, power amplifier module and the 2nd loudspeaker module, described first loudspeaker module comprises tweeter unit in parallel and middle speaker units, described 2nd loudspeaker module comprises woofer unit.
Owing to Bluetooth transmission process can cause the loss of signal, therefore the decline of audio can be caused, in the present invention, by frequency signal distribution module, signal is divided into two-way, wherein by DAC module during the first branch road (digital-to-analogue dress changes module), numerary signal is converted into simulating signal, lower 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 Hi-pass filter, also there is the signal of some medium-high frequencies, so the first loudspeaker module carrys out processing signals by the high loud speaker unit of parallel connection and middle speaker units, by the signal processing of 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 the sense of hearing of people, in 2nd branch road, signal is through the process of low pass filter blocks, then carries out in process by frequency-selecting amplifier module to low frequency signal, it is possible to make the audio low stress effect in the 2nd loud speaker broadcasting better outstanding. by the process of the first branch road and the 2nd branch road, obtain the audio of better fidelity, the shortcoming in Bluetooth transmission process can be overcome to a certain extent.
Described DAC module is made up of the two of parallel connection DAC, and one of them DAC is in series with phase inverter.
DAC module is divided into two-way, wherein DAC(digital to analog converter is directly sent on a road), another road becomes polarity reversing signal through phase inverter and sends into DAC again, so mutually mixing from DAC signal out and another DAC signal out, equivalence bit number can not only be provided like this, conversion accuracy can also be improved, it is to increase tonequality shows.
Also comprising the casing for installing each module, described casing is cube structure, and its inside sidewalls is provided with the suction energy portion of uniform flattened cylindrical body structure, and described suction energy portion is filled with mercury.
Sound equipment operationally can shake, thus cause the resonance of whole casing, the stability of this kind of resonance meeting sound equipment circuit, thus unstable noise can be generated, therefore the Xi Neng district being provided with flattened cylindrical body structure, and it is filled with mercury within it, when resonance occurs, crumple can be there is and absorb resonance energy, avoid resonance to be had an impact by circuit raising 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, the fidelity effect of further raising sound equipment.
Compared with prior art, the present invention has following useful effect: bluetooth sound equipment is improved by the present invention, reduces the shortcoming that loss of signal causes tonequality to reduce so that sound is more three-dimensional and plentiful.
Accompanying drawing explanation
Fig. 1 is embodiment 1 structure block diagram;
Fig. 2 is DAC module structure block diagram;
Fig. 3 is wall box structural representation;
Fig. 4 is box bottom structural representation.
Embodiment
In order to allow the technician of this area understand the technical scheme of the present invention better, below in conjunction with accompanying drawing, the present invention is further elaborated.
Embodiment 1
As shown in Figure 1, a kind of high-fidelity bluetooth sound equipment, comprise bluetooth module and microprocessor module that signal connects, also comprise the frequency signal distribution module being connected with microprocessor module signal, and the first branch road being connected with frequency signal distribution module signal respectively and the 2nd branch road, described first branch road comprises the DAC module that signal connects successively, high pass filter block, power amplifier module and the first loudspeaker module, described 2nd branch road comprises the DAC module that signal connects successively, low pass filter blocks, frequency-selecting amplifier module, power amplifier module and the 2nd loudspeaker module, described first loudspeaker module comprises tweeter unit in parallel and middle speaker units, described 2nd loudspeaker module comprises woofer unit. as shown in Figure 2, described DAC module is made up of the two of parallel connection DAC, and one of them DAC is in series with phase inverter.
As shown in Figures 3 and 4, also comprising the casing for installing each module, described casing is cube structure, is provided with the suction energy portion 31 of uniform flattened cylindrical body structure inside its sidewall 3, and described suction energy portion is filled with mercury. It is provided with acoustical cotton layer 41 inside the base plate 4 of described casing.
Claims (4)
1. a high-fidelity bluetooth sound equipment, comprise bluetooth module and microprocessor module that signal connects, it is characterized in that, also comprise the frequency signal distribution module being connected with microprocessor module signal, and the first branch road being connected with frequency signal distribution module signal respectively and the 2nd branch road, described first branch road comprises the DAC module that signal connects successively, high pass filter block, power amplifier module and the first loudspeaker module, described 2nd branch road comprises the DAC module that signal connects successively, low pass filter blocks, frequency-selecting amplifier module, power amplifier module and the 2nd loudspeaker module, described first loudspeaker module comprises tweeter unit in parallel and middle speaker units, described 2nd loudspeaker module comprises woofer unit.
2. high-fidelity bluetooth sound equipment according to claim 1, it is characterised in that, described DAC module is made up of the two of parallel connection DAC, and one of them DAC is in series with phase inverter.
3. high-fidelity bluetooth sound equipment according to claim 1, it is characterized in that, also comprising the casing for installing each module, described casing is cube structure, its inside sidewalls is provided with the suction energy portion of uniform flattened cylindrical body structure, and described suction energy portion is filled with mercury.
4. height according to claim 3 ensures bluetooth sound equipment, it is characterised in that, it is provided with acoustical cotton layer inside the base plate of described casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610147211.7A CN105635901A (en) | 2016-03-16 | 2016-03-16 | High-fidelity bluetooth sound equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610147211.7A CN105635901A (en) | 2016-03-16 | 2016-03-16 | High-fidelity bluetooth sound equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105635901A true CN105635901A (en) | 2016-06-01 |
Family
ID=56050318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610147211.7A Pending CN105635901A (en) | 2016-03-16 | 2016-03-16 | High-fidelity bluetooth sound equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105635901A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017211301A1 (en) * | 2016-06-08 | 2017-12-14 | 视讯联合科技股份有限公司 | Multi-functional modular audio cabinet |
| CN108810730A (en) * | 2018-07-27 | 2018-11-13 | 广州酷狗计算机科技有限公司 | A kind of sound system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6150970A (en) * | 1999-03-01 | 2000-11-21 | Sony Corporation | Method and system for digital to analog conversion |
| CN101014209A (en) * | 2007-01-19 | 2007-08-08 | 电子科技大学 | Full band natural sound effect audio directional loudspeaker |
| CN205622838U (en) * | 2016-03-16 | 2016-10-05 | 广州坚立音响器材有限公司 | High -fidelity bluetooth sound |
-
2016
- 2016-03-16 CN CN201610147211.7A patent/CN105635901A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6150970A (en) * | 1999-03-01 | 2000-11-21 | Sony Corporation | Method and system for digital to analog conversion |
| CN101014209A (en) * | 2007-01-19 | 2007-08-08 | 电子科技大学 | Full band natural sound effect audio directional loudspeaker |
| CN205622838U (en) * | 2016-03-16 | 2016-10-05 | 广州坚立音响器材有限公司 | High -fidelity bluetooth sound |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017211301A1 (en) * | 2016-06-08 | 2017-12-14 | 视讯联合科技股份有限公司 | Multi-functional modular audio cabinet |
| CN108810730A (en) * | 2018-07-27 | 2018-11-13 | 广州酷狗计算机科技有限公司 | A kind of sound system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160601 |
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| RJ01 | Rejection of invention patent application after publication |