CN109802697A - Wireless audio adapter - Google Patents
Wireless audio adapter Download PDFInfo
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- CN109802697A CN109802697A CN201811639526.9A CN201811639526A CN109802697A CN 109802697 A CN109802697 A CN 109802697A CN 201811639526 A CN201811639526 A CN 201811639526A CN 109802697 A CN109802697 A CN 109802697A
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- 239000003990 capacitor Substances 0.000 claims description 49
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- 230000005540 biological transmission Effects 0.000 abstract description 26
- 230000005236 sound signal Effects 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000003321 amplification Effects 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
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- 208000015979 hopping Diseases 0.000 description 1
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Abstract
The present invention discloses a kind of wireless audio adapter, including linear voltage regulator, memory, audio processing chip, radio-frequency receiving-transmitting amplifier, antenna and USB3.0 connector, USB3.0 connector is electrically connected with the data-interface of audio processing chip, the input terminal of linear voltage regulator with external power supply for being electrically connected, the voltage output end of linear voltage regulator is electrically connected with the feeder ear of audio processing chip, memory is electrically connected with audio processing chip, the first end of radio-frequency receiving-transmitting amplifier is electrically connected with audio processing chip, and the second end of radio-frequency receiving-transmitting amplifier is electrically connected with antenna.The adapter of the application can reduce the delay of audio signal to avoid the interference of 2.4G signal, facilitate the connection and exploitation of speaker host side；Pass through setting linear voltage regulator, memory, radio-frequency receiving-transmitting amplifier and antenna, the stability of audio frequency adapter can be improved, so that improving the audio transmission quality of audio frequency adapter, also audio transmission efficiency is improved, the problem of avoiding the occurrence of transmission delay improves the transmission reliability of wireless audio adapter.
Description
Technical field
The present invention relates to audio transmission module fields, more particularly to a kind of wireless audio adapter.
Background technique
Wireless adapter exponential code product is applicable in the interface convertor of wireless device.Wireless adapter uses global general-use
Short-distance wireless interconnection technique, it is attached using 2.4GHz identical with microwave, remote controler and some civilian radio communication apparatus
Closely exempt to pay, exempt from the radio frequency band of application, for avoid this frequency range electronic device numerous and caused by interfere with each other, thus with
1600 highly difficult frequency hoppings and encryption secrecy technology.Wireless adapter is substantially USB3.0 connector, and USB3.0
Connector has the characteristics that plug and play, and if distinguishing from interface, the type of wireless adapter is also just a kind of: i.e. wireless
USB adapter.Except of course that there are also wireless headsets, wireless Mike etc. outside Wireless USB adapter.
With development of the wireless technology in audio and video technology, more and more audio and video equipments all use WIFI, BT
Equal wireless protocols carry out the transmission of wireless signal.However, interference is increasing since existing wireless signal is more and more, so that
The audio transmission quality of existing audio frequency adapter is deteriorated, and but also audio transmission efficiency is slack-off, transmission delay occurs
Situation reduces the transmission reliability of wireless audio adapter.
Summary of the invention
The purpose of the present invention is overcoming shortcoming in the prior art, a kind of wireless audio adapter is provided.
The purpose of the present invention is achieved through the following technical solutions:
A kind of wireless audio adapter, comprising: linear voltage regulator, memory, audio processing chip, radio-frequency receiving-transmitting amplification
Device, antenna and USB3.0 connector, the USB3.0 connector is electrically connected with the data-interface of the audio processing chip, described
The input terminal of linear voltage regulator with external power supply for being electrically connected, at the voltage output end of the linear voltage regulator and the audio
The feeder ear electrical connection of chip is managed, the memory is electrically connected with the audio processing chip, the radio-frequency receiving-transmitting amplifier
First end is electrically connected with the audio processing chip, and the second end of the radio-frequency receiving-transmitting amplifier is electrically connected with the antenna.
The linear voltage regulator includes that input filter unit, voltage-stablizer and output filtering are single in one of the embodiments,
One end of member, the input filter unit is electrically connected with external power supply, the other end of the input filter unit and the pressure stabilizing
The input terminal of device is electrically connected, and the output end of the voltage-stablizer is electrically connected with the output filter unit, the output filter unit
Output end be electrically connected with the audio processing chip.
The input filter unit includes capacitor C2 and capacitor C12 in one of the embodiments, and the one of the capacitor C2
End is electrically connected with the external power supply, the other end ground connection of the capacitor C2, one end of the capacitor C12 and the external power supply
Electrical connection, the other end ground connection of the capacitor C12.
The output filter unit includes capacitor C34 and capacitor C39 in one of the embodiments, the capacitor C34's
One end is electrically connected with the output end of the voltage-stablizer, the other end ground connection of the capacitor C34, one end of the capacitor C39 and institute
State the output end electrical connection of voltage-stablizer, the other end ground connection of the capacitor C39.
The USB3.0 connector includes USB2.0 interface circuit and I2S interface circuit, institute in one of the embodiments,
Four connecting pins for stating USB2.0 interface circuit are electrically connected with the audio processing chip respectively, and the five of the I2S interface circuit
A connectivity port is electrically connected with the audio processing chip respectively.
The radio-frequency receiving-transmitting amplifier includes FEM chip, filter unit and antennal interface in one of the embodiments,
The input terminal of the FEM chip is electrically connected with the output end of the filter unit, the input terminal of the filter unit and the day
Line interface electrical connection, the antennal interface are electrically connected with the antenna.
The filter unit includes capacitor C1, inductance L8 and capacitor C33, the inductance L8 in one of the embodiments,
First end be electrically connected with the antennal interface, the second end of the inductance L8 after the capacitor C33 with FEM chip electricity
Connection, one end of the capacitor C1 are electrically connected with the first end of the inductance L8, the other end ground connection of the capacitor C1.
The FEM chip uses the FEM chip of model RTC5638H in one of the embodiments,.
The audio processing chip uses the wireless audio chip of model MAFN56 in one of the embodiments,.
The antenna is onboard antenna in one of the embodiments,.
The present invention compared with the prior art the advantages of and have the beneficial effect that:
The present invention is a kind of wireless audio adapter, by audio processing chip and USB3.0 connector, can be incited somebody to action
USB2.0 interface and audio I2S interface combine, convenient that the adapter is used on audio frequency apparatus；And the application's is suitable
Orchestration can reduce the delay of audio signal to avoid the interference of 2.4G signal, facilitate the connection and exploitation of speaker host side；Together
When, by setting linear voltage regulator, memory, radio-frequency receiving-transmitting amplifier and antenna, the stability of audio frequency adapter can be improved,
So that improving the audio transmission quality of audio frequency adapter, audio transmission efficiency is also improved, asking for transmission delay is avoided the occurrence of
Topic, improves the transmission reliability of wireless audio adapter.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the functional block diagram of the wireless audio adapter of an embodiment of the present invention；
Fig. 2 is the circuit diagram of the USB3.0 connector of wireless audio adapter shown in FIG. 1；
Fig. 3 is the circuit diagram of the linear voltage regulator of wireless audio adapter shown in FIG. 1；
Fig. 4 is the circuit diagram of the radio-frequency receiving-transmitting amplifier of wireless audio adapter shown in FIG. 1；
Fig. 5 is the circuit diagram of the audio processing chip of wireless audio adapter shown in FIG. 1；.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give better embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more the disclosure
Add thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant listed item.
Referring to Fig. 1, a kind of wireless audio adapter, comprising: linear voltage regulator 100, memory 200, audio processing core
At piece 300, radio-frequency receiving-transmitting amplifier 400, antenna 500 and USB3.0 connector 600, the USB3.0 connector and the audio
The data-interface electrical connection of chip is managed, the input terminal of the linear voltage regulator is described linear steady for being electrically connected with external power supply
The voltage output end of depressor is electrically connected with the feeder ear of the audio processing chip, the memory and the audio processing chip
Electrical connection, the first end of the radio-frequency receiving-transmitting amplifier are electrically connected with the audio processing chip, the radio-frequency receiving-transmitting amplifier
Second end be electrically connected with the antenna.It it should be noted that the linear voltage regulator 100 is LDO voltage stabilizer, and is to be used for
5V voltage is converted into 3.3V output voltage into audio processing chip；The memory 200 be used for store operation firmware with
Configuration information, the firmware of the operation are the software firmware for cooperating the processing signal of chip operation；The audio processing chip 300
For carrying out transmission process to the audio signal of transmitting-receiving；The radio-frequency receiving-transmitting amplifier 400 be used for the wireless signal received into
Row LNA amplification, and PA amplification is carried out to the radiofrequency signal of transmitting；The antenna 600 is for receiving audio signal or transmission
Audio signal；The USB3.0 connector 700 is 3.0 connector of Universal USB of USB3.0, convenient for exploitation and is used.
The course of work: it firstly, this wireless audio video device is matched with external sound equipment end or same category of device, matches
The transmission of audio data is just carried out after success；Then, external wireless audio signal is received (wireless sound by PCB antenna
The signal of frequency video device is launched by PCB antenna), and then LNA amplification is carried out by FEM chip, it is input at audio
Chip is managed, while audio processing chip can call the preset firmware in EEPROM to carry out signal processing, and audio signal is converted
For I2S agreement, then host is transferred to by I2S interface in US3.0 interface and is further processed, and USB2.0 interface is in entire mistake
Doing in journey ensures to communicate and can effectively carry out.
The USB3.0 connector includes USB2.0 interface circuit and I2S interface circuit, the USB2.0 interface circuit
Four connecting pins are electrically connected with the audio processing chip respectively, five connectivity ports of the I2S interface circuit respectively with institute
State audio processing chip electrical connection.
Specifically, referring to Fig. 2, by 4 connecting lines (VCC, D+, D-, GND) of USB2.0 and 5 connecting lines of I2S
(I2S_MCLK, I2S_BCK, I2S_DATA, I2S_LRCK, I2S_DATA2) passes through 9 lines and audio processing chip of USB3.0
It is communicated, 4 connecting lines that the connecting line of this USB3.0 used is first used as USB2.0 work, and other 5 lines are not
The transmission that USB can be used as uses.And the 5.8G audio proprietary protocol with low delay, i.e. I2S agreement, then pass through 5 companies of I2S
Wiring is connected and communicate with host-physical.The adapter is used on audio frequency apparatus to convenient；It can also avoid 2.4G signal
Interference, reduce the delay of audio signal, facilitate the connection and exploitation of speaker host side；Meanwhile by setting linear voltage regulator,
Memory, radio-frequency receiving-transmitting amplifier and antenna, can be improved the stability of audio frequency adapter, so that improving audio frequency adapter
Audio transmission quality, also improve audio transmission efficiency, the problem of avoiding the occurrence of transmission delay, improve wireless audio adapter
Transmission reliability.
Referring to Fig. 3, the linear voltage regulator includes input filter unit, voltage-stablizer and exports filter unit, it is described defeated
The one end for entering filter unit is electrically connected with external power supply, the other end of the input filter unit and the input terminal of the voltage-stablizer
Electrical connection, the output end of the voltage-stablizer is electrically connected with the output filter unit, the output end for exporting filter unit and
The audio processing chip electrical connection.In this way, by setting input filter unit, voltage-stablizer and output filter unit, Ke Yiti
The stability of high input voltage, and then improve the stability of audio frequency adapter.
Specifically, the input filter unit includes one end and the outside of capacitor C2 and capacitor C12, the capacitor C2
Power electric connection, the other end ground connection of the capacitor C2, one end of the capacitor C12 is electrically connected with the external power supply, described
The other end of capacitor C12 is grounded.
Specifically, the output filter unit includes capacitor C34 and capacitor C39, one end of the capacitor C34 and described steady
The output end of depressor is electrically connected, the other end ground connection of the capacitor C34, and one end of the capacitor C39 is defeated with the voltage-stablizer
Outlet electrical connection, the other end ground connection of the capacitor C39.
Referring to Fig. 4, the radio-frequency receiving-transmitting amplifier includes FEM chip, filter unit and antennal interface, the FEM core
The input terminal of piece is electrically connected with the output end of the filter unit, and the input terminal of the filter unit is electrically connected with the antennal interface
It connects, the antennal interface is electrically connected with the antenna.
Specifically, the filter unit includes capacitor C1, inductance L8 and capacitor C33, the first end of the inductance L8 and institute
Antennal interface electrical connection is stated, the second end of the inductance L8 is electrically connected after the capacitor C33 with the FEM chip, the electricity
The one end for holding C1 is electrically connected with the first end of the inductance L8, the other end ground connection of the capacitor C1.
Specifically, the FEM chip uses the FEM chip of model RTC5638H.
Referring to Fig. 5, Fig. 5 is the circuit diagram of audio processing chip, the audio processing chip uses model MAFN56
Wireless audio chip.It should also be noted that, referring to Fig. 4, the antenna is onboard antenna.
The present invention compared with the prior art the advantages of and have the beneficial effect that:
The present invention is a kind of wireless audio adapter, by audio processing chip and USB3.0 connector, can be incited somebody to action
USB2.0 interface and audio I2S interface combine, convenient that the adapter is used on audio frequency apparatus；And the application's is suitable
Orchestration can reduce the delay of audio signal to avoid the interference of 2.4G signal, facilitate the connection and exploitation of speaker host side；Together
When, by setting linear voltage regulator, memory, radio-frequency receiving-transmitting amplifier and antenna, the stability of audio frequency adapter can be improved,
So that improving the audio transmission quality of audio frequency adapter, audio transmission efficiency is also improved, asking for transmission delay is avoided the occurrence of
Topic, improves the transmission reliability of wireless audio adapter.
Only several embodiments of the present invention are expressed for embodiment described above, and the description thereof is more specific and detailed, but
It cannot be construed as a limitation to the scope of the present invention.It should be pointed out that for the ordinary skill people of this field
For member, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to of the invention
Protection scope.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of wireless audio adapter characterized by comprising linear voltage regulator, memory, audio processing chip, radio frequency
Receive and dispatch amplifier, antenna and USB3.0 connector, the data-interface electricity of the USB3.0 connector and the audio processing chip
Connection, the input terminal of the linear voltage regulator for be electrically connected with external power supply, the voltage output end of the linear voltage regulator and
The feeder ear of the audio processing chip is electrically connected, and the memory is electrically connected with the audio processing chip, and the radio frequency is received
The first end of hair amplifier is electrically connected with the audio processing chip, the second end of the radio-frequency receiving-transmitting amplifier and the antenna
Electrical connection.
2. wireless audio adapter according to claim 1, which is characterized in that the linear voltage regulator includes input filter
Unit, voltage-stablizer and output filter unit, one end of the input filter unit are electrically connected with external power supply, the input filter
The other end of unit is electrically connected with the input terminal of the voltage-stablizer, the output end of the voltage-stablizer and output filter unit electricity
The output end of connection, the output filter unit is electrically connected with the audio processing chip.
3. wireless audio adapter according to claim 2, which is characterized in that the input filter unit includes capacitor C2
It is electrically connected with one end of capacitor C12, the capacitor C2 with the external power supply, the other end ground connection of the capacitor C2, the electricity
The one end for holding C12 is electrically connected with the external power supply, the other end ground connection of the capacitor C12.
4. wireless audio adapter according to claim 2, which is characterized in that the output filter unit includes capacitor
C34 and capacitor C39, one end of the capacitor C34 are electrically connected with the output end of the voltage-stablizer, the other end of the capacitor C34
Ground connection, one end of the capacitor C39 are electrically connected with the output end of the voltage-stablizer, the other end ground connection of the capacitor C39.
5. wireless audio adapter according to claim 1, which is characterized in that the USB3.0 connector includes USB2.0
Interface circuit and I2S interface circuit, four connecting pins of the USB2.0 interface circuit are electric with the audio processing chip respectively
Connection, five connectivity ports of the I2S interface circuit are electrically connected with the audio processing chip respectively.
6. wireless audio adapter according to claim 1, which is characterized in that the radio-frequency receiving-transmitting amplifier includes FEM
The input terminal of chip, filter unit and antennal interface, the FEM chip is electrically connected with the output end of the filter unit, described
The input terminal of filter unit is electrically connected with the antennal interface, and the antennal interface is electrically connected with the antenna.
7. wireless audio adapter according to claim 6, which is characterized in that the filter unit includes capacitor C1, electricity
Sense L8 and capacitor C33, the first end of the inductance L8 are electrically connected with the antennal interface, described in the second end warp of the inductance L8
It is electrically connected after capacitor C33 with the FEM chip, one end of the capacitor C1 is electrically connected with the first end of the inductance L8, described
The other end of capacitor C1 is grounded.
8. wireless audio adapter according to claim 6, which is characterized in that the FEM chip uses model
The FEM chip of RTC5638H.
9. wireless audio adapter according to claim 1, which is characterized in that the audio processing chip uses model
The 5G wireless audio chip of MAFN56.
10. wireless audio adapter according to claim 1, which is characterized in that the antenna is onboard antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811639526.9A CN109802697A (en) | 2018-12-29 | 2018-12-29 | Wireless audio adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811639526.9A CN109802697A (en) | 2018-12-29 | 2018-12-29 | Wireless audio adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109802697A true CN109802697A (en) | 2019-05-24 |
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ID=66558302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811639526.9A Pending CN109802697A (en) | 2018-12-29 | 2018-12-29 | Wireless audio adapter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111182248A (en) * | 2019-12-24 | 2020-05-19 | 深圳市亿泉电子有限公司 | Audio playing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104640239A (en) * | 2015-03-04 | 2015-05-20 | 深圳一智信息技术有限公司 | Vehicle-mounted communication multimedia equipment with interface capable being customized by user |
| CN107637088A (en) * | 2016-07-07 | 2018-01-26 | 北京小米移动软件有限公司 | Audio frequency broadcast system, external expansion equipment, audio frequency playing method and device |
| CN109067420A (en) * | 2018-08-17 | 2018-12-21 | 惠州高盛达科技有限公司 | Wireless audio frequency transmission function USB interface mould group |
-
2018
- 2018-12-29 CN CN201811639526.9A patent/CN109802697A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104640239A (en) * | 2015-03-04 | 2015-05-20 | 深圳一智信息技术有限公司 | Vehicle-mounted communication multimedia equipment with interface capable being customized by user |
| CN107637088A (en) * | 2016-07-07 | 2018-01-26 | 北京小米移动软件有限公司 | Audio frequency broadcast system, external expansion equipment, audio frequency playing method and device |
| CN109067420A (en) * | 2018-08-17 | 2018-12-21 | 惠州高盛达科技有限公司 | Wireless audio frequency transmission function USB interface mould group |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111182248A (en) * | 2019-12-24 | 2020-05-19 | 深圳市亿泉电子有限公司 | Audio playing device |
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Application publication date: 20190524 |