CN102768849A - Music playing system based on wireless audio data transmission - Google Patents
Music playing system based on wireless audio data transmission Download PDFInfo
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- CN102768849A CN102768849A CN2012102741574A CN201210274157A CN102768849A CN 102768849 A CN102768849 A CN 102768849A CN 2012102741574 A CN2012102741574 A CN 2012102741574A CN 201210274157 A CN201210274157 A CN 201210274157A CN 102768849 A CN102768849 A CN 102768849A
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Abstract
The invention discloses a music playing system based on wireless audio data transmission. The music playing system based on wireless audio data transmission comprises a sending end, a receiving end and a loudspeaker. A music player developed based on Android SDK (software development kit) and operated on a mobile terminal device serves as the sending end, an Android system supportive to the WiFi (wireless fidelity) function is installed on the mobile terminal, the music player defines a bottom decoding library to transmit decoded pulse modulation data through a WiFi network, and a smart phone or a tablet personal computer serves as the mobile terminal. The receiving end comprises a master control unit, a WiFi network unit and a digital-to-analog conversion output unit, a central control function is jointly completed by the master control unit and a peripheral storage device, and the WiFi network unit is connected to the master control unit by means of USB (universal serial bus) HOST. A WiFi network module receives audio data transmitted by the sending end by means of wireless network transmission and sends the audio data to a master control module. The digital-to-analog conversion output unit is used for digital-to-analog conversion of the audio data to complete audio receiving and playing while providing an output interface, and the loudspeaker is connected with the receiving end to directly output corresponding audio signals.
Description
Technical field
The present invention relates to a kind of audio frequency broadcast system, specifically, relate to a kind of music playing system based on the ANTENNAUDIO data transmission.
Background technology
Android be a kind of with the linux kernel be the basis open source code operating system, be mainly used in portable sets such as mobile phone terminal and panel computer, the Android system compatibility is strong; Its characteristic of increasing income is beneficial to innovation, is convenient to third party's exploitation, and its platform architecture is made up of operating system, middleware, user interface and application program; Adopt software lamination framework; Mainly be divided into three parts: the linux kernel by the C language development, basic function is provided, form hardware abstraction layer; By the virtual machine and the function library of C++ exploitation, form the middleware layer; And by mainly based on the various application software of Java technology, form the upper layer application layer.
Music is occupied critical positions in people's life, present stage, the electric terminal that loads the Android system is very common, and people can pass through various Android equipment; At any time music appreciating, the oneself loosens, but traditional Android music player; Can only put the music on through this machine sowing, export, enjoy better music effect if people want to link external sound equipment; Must link to each other through wired, there is following defective in this wired mode: acquired connecting line more, used trouble; In the time of playing back music, the terminal is mobile restricted, inconvenient operation.
Chinese patent mandate publication number is that the wireless transmission audio, video data is mentioned in the patented claim " wireless video and audio transmitting device and comprise the wireless transmitting system of this device " of CN202059445U; At first audio frequency and video are changed into Streaming Media; Through the WiFi agreement Streaming Media is transferred to the WiFi module then, decodes through the dedicated tone video decoding chip again, output at last in projector or the sound equipment; But this device has used the Streaming Media transmission mode, needs extra conversion expense.
Summary of the invention
To above deficiency; The present invention proposes a kind of music playing system of the Android of utilization platform based on the ANTENNAUDIO data transmission; It utilizes the WiFi wireless network; Must could play this machine music by the wired connection sound equipment, these technical matters of inconvenient operation to solve present portable Android terminal.
Music playing system based on the ANTENNAUDIO data transmission of the present invention comprises transmitting terminal, receiving end and audio amplifier, it is characterized in that, said transmitting terminal carries out audio decoder to audio file; And pass through the WiFi Network Transmission to receiving end; Receiving end carries out digital-to-analog conversion formation audio analog signals with the voice data that receives and also plays through the voice data of WiFi network receiving end/sending end transmission, directly exports for audio amplifier equipment; Audio amplifier connects receiving end, directly exports the corresponding audio signal.
Said transmitting terminal is the music player that runs on the mobile terminal device, and the Android system that supports the WiFi function is installed on this portable terminal, and music player is based on Android SDK exploitation, and music player carries out the audio decoder transmission to audio file.
Said portable terminal is smart mobile phone or panel computer.
Transmit decoded pulsed modulation data in the self-defined bottom decoding of said music player storehouse through the WiFi network.
Said music player is provided with the network information of receiving end on software interface, through usb data line or online set-up mode network setup information is passed to receiving end.
Said receiving end comprises main control unit, WiFi NE, storage unit and digital-to-analog conversion output unit, and main control unit combines peripheral storage device to accomplish Central Control Function; The WiFi NE is connected to main control unit through USB HOST mode, and the WiFi mixed-media network modules mixed-media passes through the voice data of the mode receiving end/sending end transmission of wireless network transmissions, and the voice data that receives is sent to main control module; The digital-to-analog conversion output unit is done digital-to-analog conversion to voice data, accomplishes audio frequency and receives broadcast, and output interface to audio amplifier equipment is provided simultaneously; Peripheral storage device is used for stores audio data.
Said receiving end has also comprised button and warning light, and button directly links to each other with main control unit with warning light, as control input and prompting output.
Wireless connections mode between said transmitting terminal and the receiving end adopts route pattern or direct-connected pattern.
Beneficial effect of the present invention: the present invention is highly suitable in the household wireless LAN, through easy configuration, makes receiving end be connected to home network automatically through the WiFi network; The music player that the combined type portable terminal is supporting; Can realize the radio play of music, comfortable sharing exempted the inconvenience of wired connection; Practiced thrift the time, for people provide adventure in daily life easily; Simultaneously, do not use the Streaming Media transmission mode, practiced thrift the conversion expense, directly carry out software decode, arrive receiving end through the WiFi Network Transmission again, reduced the decoding chip section and divided cost at this machine.
Description of drawings
Fig. 1 is embodiment one a connected mode synoptic diagram of the present invention;
Fig. 2 is embodiment two connected mode synoptic diagram of the present invention;
Fig. 3 is a workflow synoptic diagram of the present invention;
Fig. 4 is a transmitting terminal functional framework synoptic diagram of the present invention;
Fig. 5 is the two buffer memory reception mechanism principle schematic of receiving end of the present invention.
Embodiment
Below in conjunction with accompanying drawing invention is further set forth.
Music playing system based on the ANTENNAUDIO data transmission of the present invention comprises transmitting terminal 1, receiving end 2 and audio amplifier 3; 1 pair of audio file of transmitting terminal carries out audio decoder, and through WiFi Network Transmission to receiving end 2, receiving end 2 is through the voice data of WiFi network receiving end/sending end 1 transmission; The voice data that receives is carried out digital-to-analog conversion form audio analog signals and broadcast; Directly export for audio amplifier 3 equipment, audio amplifier 3 connects receiving end 2, directly exports the corresponding audio signal.
Transmitting terminal 1 is for running on the music player on the mobile terminal device; The Android system (Android 2.1 above versions) that supports the WiFi function is installed on this portable terminal; Portable terminal is mobile terminal devices such as smart mobile phone or panel computer; Music player is based on Android SDK exploitation, and music player carries out audio decoder transmission, the audio decoder interface that music player does not adopt the Android system to carry to audio file; But self-defined bottom decoding storehouse, music player transmits decoded pulsed modulation (PCM) data through the WiFi network.Transmitting terminal 1 music player can be provided with the network information of receiving end 2 on software interface; Can network setup information be passed to receiving end 2 through usb data line or online set-up mode; The former inserts receiving end 2 as USB from dish with electric terminal, and is effectively reliable, and the latter is applicable to that two ends have set up wireless connections; Fast and convenient, configuration back receiving end 2 can attempt connecting the WAP of appointment automatically.
Receiving end 2 carries out digital-to-analog conversion with the voice data that receives and forms audio analog signals through the voice data of WiFi network receiving end/sending end transmission, and the while also plays, and directly exports for audio amplifier equipment.Receiving end comprises main control unit, WiFi NE, storage unit and digital-to-analog conversion output unit.Main control unit is main control chip with s3c2440, in conjunction with completion Central Control Functions such as peripheral storage devices; The WiFi NE is the center with the 88W8686 chip; Be connected to main control unit through USB HOST mode; The WiFi mixed-media network modules mixed-media is connected to transmitting terminal through the mode of wireless network transmissions; Receive the voice data that outside (transmitting terminal) wireless network transmissions is come, and the voice data that receives is sent to main control module; The digital-to-analog conversion output unit adopts the WM8728 chip as analog-digital chip (DAC), loads the Linux embedded OS, and voice data is done digital-to-analog conversion, accomplishes audio frequency and receives broadcast, and output interface to audio amplifier equipment is provided simultaneously; Peripheral storage device comprises the NAND Flash of 64Mb and the SDRAM of 64M b, and receiving end 2 has also comprised peripheral hardwares such as some buttons, usb interface unit and warning light in addition, and button directly links to each other with main control unit with warning light, as control input and prompting output.Receiving end is operating system with Linux, carries bottom layer driving and application program, and application program utilizes associated drives to realize that wireless access, monitoring are by key control and audio frequency output etc.; Receive audio data decoder and control messages through associated internet protocol simultaneously, accomplish the transmission control task.
Transmitting terminal of the present invention and receiving end work in the WiFi network, and according to the difference of wireless connections mode, the present invention can be divided into route pattern and direct-connected pattern.
WLAN as shown in Figure 1, that route pattern is constituted based on home wireless router 4, transmitting terminal 1 all need insert this network with receiving end 2, serves as that wireless telecommunications are carried out in switching with wireless router 4.This mode is fit to the family multiple terminals to be used, and effectively, under this pattern, the user can also use home network to enjoy Internet service in the radio play music in wireless router 4 coverages.
Fig. 2 is direct-connected pattern, and direct-connected pattern is AP (Access Point) with the portable terminal, and 2 needs of receiving end are that access point connects and gets final product with transmitting terminal 1.This mode requires receiving end 2 to support WiFi Hotspot service functions (Android 2.2 and more than), and is simple and convenient, uses free.
Fig. 3 has showed the functional module and the mutual basic framework of flow process of transmitting terminal 1 and receiving end 2, and transmitting terminal 1 obtains receiving end 2 information through broadcast search behind opening initialization, choose according to feedback information to connect; Begin start-up control service and transmission service then, wherein, the control service is used for the supervisory user input information; Local decode and remote playing are done handled, and the transmission service is packaged into the network packet form after played songs is decoded, and is transferred to far-end through TCP; Except these two services, in whole connection procedure, transmitting terminal 1 is safeguarding also that with receiving end 2 heartbeat is synchronous; Keep both sides' timing response, so that in time monitor connection status.
Receiving end 2 at first can carry out initial work behind electrification reset, related hardware is set, and attempts connecting WAP automatically according to configuration information; After the work, receiving end 2 can wait for that client connects with form server, can respond the search message of transmitting terminal 1 in this course on accomplish, and the feedback local information is like the audio amplifier title and the network address; After transmitting terminal 1 was selected and connected, receiving end can 2 startups receive service, broadcast service, interactive service and control service.Receive and serve thread through TCP mode buffer memory reception voice data, send to and play the service thread, broadcast service thread is transported to voice data and carries out the digital-to-analog conversion broadcast in the sound card; Control the local control information of service line range monitoring simultaneously, corresponding order is processed, the interactive service thread is as the message terminal; The receiving end/sending end control messages; Dissection process, in addition, receiving end is also being kept heartbeat mechanism; With the monitoring connection status, more than be the multithreading workflow of wireless music transmission system receiving end.
Fig. 4 has showed the basic function module of Android end wireless music player, and it supports this machine sowing of music to put and two kinds of patterns of radio play, and subscriber interface module is responsible for carrying out alternately with the user, reads user's operation, shows relevant information.Behind the software startup, at first the attribute information of reading and saving recovers on-the-spot; If be in the radio play pattern when withdrawed from from last time, then call automatic link block, the connection failure user can manually search for, and is concrete through the realization of search link block; After connecting, transmit control module is responsible for carrying out message communicating with receiving end, keeps conversation; The decoding output module is responsible for the local audio file decoding, is packaged into the network packet form and transmits; The heartbeat synchronization module is being kept with the heartbeat of receiving end synchronous, and a kind of mechanism that connects validity of monitoring is provided, and in addition, the user can carry out rename to receiving end, and quick this machine sowing of switchback mode playback.Before program withdraws from, can preserve relevant information earlier, recover so that start next time.
In order to improve receiving efficiency and to improve result of broadcast; The present invention has adopted two buffer memory reception mechanisms, controls alternately through read-write signal amount, in two shared buffer memory arrays, intersects and reads and writes; Concrete sequential is as shown in Figure 5; Receive the service thread and in buffer memory, write audio data decoder, reading of data was play during broadcast service thread was postponed and deposited, and the division of labor synchronously.Whenever write (reading) intact buffer memory, discharge readable (can a write) semaphore, need wait for that then one can be write (readable) semaphore, could continue to write (reading) toward another buffer memory.Under the proper network situation, network transfer speeds is much larger than broadcasting speed, so before a buffer memory was play end, another buffer memory was ready, slack problem when having overcome broadcast.Receive simultaneously and could continue to receive data when the service thread need have been waited for free buffer.
The above is merely preferred embodiments of the present invention; The present invention is not limited to above-mentioned embodiment; In implementation process, possibly there is local small structural modification; If various changes of the present invention or modification are not broken away from the spirit and scope of the present invention, and belong within claim of the present invention and the equivalent technologies scope, then the present invention also is intended to comprise these changes and modification.
Claims (8)
1. music playing system based on the ANTENNAUDIO data transmission, it comprises transmitting terminal, receiving end and audio amplifier, it is characterized in that; Said transmitting terminal carries out audio decoder to audio file, and passes through the WiFi Network Transmission to receiving end, and receiving end is through the voice data of WiFi network receiving end/sending end transmission; The voice data that receives is carried out digital-to-analog conversion form audio analog signals and broadcast; Directly export for audio amplifier equipment, audio amplifier connects receiving end, directly exports the corresponding audio signal.
2. the music playing system based on the ANTENNAUDIO data transmission according to claim 1; It is characterized in that; Said transmitting terminal is the music player that runs on the mobile terminal device; The Android system that supports the WiFi function is installed on this portable terminal, and music player is developed based on AndroidSDK, and music player carries out the audio decoder transmission to audio file.
3. the music playing system based on the ANTENNAUDIO data transmission according to claim 2 is characterized in that, said portable terminal is smart mobile phone or panel computer.
4. the music playing system based on the ANTENNAUDIO data transmission according to claim 2 is characterized in that, transmit decoded pulsed modulation data in the self-defined bottom decoding of said music player storehouse through the WiFi network.
5. the music playing system based on the ANTENNAUDIO data transmission according to claim 2; It is characterized in that; Said music player is provided with the network information of receiving end on software interface, through usb data line or online set-up mode network setup information is passed to receiving end.
6. the music playing system based on the ANTENNAUDIO data transmission according to claim 1; It is characterized in that; Said receiving end comprises main control unit, WiFi NE, storage unit and digital-to-analog conversion output unit, and main control unit combines peripheral storage device to accomplish Central Control Function; The WiFi NE is connected to main control unit through USB HOST mode, and the WiFi mixed-media network modules mixed-media passes through the voice data of the mode receiving end/sending end transmission of wireless network transmissions, and the voice data that receives is sent to main control module; The digital-to-analog conversion output unit is done digital-to-analog conversion to voice data, accomplishes audio frequency and receives broadcast, and output interface to audio amplifier equipment is provided simultaneously; Peripheral storage device is used for stores audio data.
7. the music playing system based on the ANTENNAUDIO data transmission according to claim 6 is characterized in that said receiving end also comprises button and warning light, and button directly links to each other with main control unit with warning light, as control input and prompting output.
8. the music playing system based on the ANTENNAUDIO data transmission according to claim 1 is characterized in that, the wireless connections mode adopts route pattern or direct-connected pattern between said transmitting terminal and the receiving end.
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| CN2012102741574A CN102768849A (en) | 2012-08-02 | 2012-08-02 | Music playing system based on wireless audio data transmission |
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Cited By (12)
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| CN103533481A (en) * | 2013-02-07 | 2014-01-22 | 协创立科数码电子(深圳)有限公司 | WiFi wireless sound box |
| CN104240735A (en) * | 2014-05-23 | 2014-12-24 | 杭州联汇数字科技有限公司 | Intelligent loudspeaker box audio playing method and system |
| CN104427642A (en) * | 2013-08-19 | 2015-03-18 | 广州杰赛科技股份有限公司 | Music or image sharing system |
| CN104754409A (en) * | 2013-12-27 | 2015-07-01 | 联芯科技有限公司 | Multimedia video playing system applied to Android platform and multimedia video playing method applied to multimedia video playing system of Android platform |
| CN105049982A (en) * | 2015-05-30 | 2015-11-11 | 广东欧珀移动通信有限公司 | Intelligent sound box and music play method based on intelligent sound box |
| CN105072614A (en) * | 2015-08-10 | 2015-11-18 | 小米科技有限责任公司 | Method and device for controlling audio playing device |
| CN105261381A (en) * | 2015-10-19 | 2016-01-20 | 上海斐讯数据通信技术有限公司 | Audio playback method and device through router |
| CN105262793A (en) * | 2015-09-09 | 2016-01-20 | 广东欧珀移动通信有限公司 | Method and system for playing audio file in storage device by intelligent speaker |
| CN106066891A (en) * | 2016-06-17 | 2016-11-02 | 中国科学院长春光学精密机械与物理研究所 | Data capture method, device and audio player |
| CN106297225A (en) * | 2015-05-20 | 2017-01-04 | 天脉聚源（北京）科技有限公司 | The remote control thereof of a kind of home controller and system |
| CN106341910A (en) * | 2016-09-29 | 2017-01-18 | 深圳Tcl新技术有限公司 | Audio transmission device and method |
| CN106453939A (en) * | 2016-10-28 | 2017-02-22 | 努比亚技术有限公司 | Streaming media access method and apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103533481A (en) * | 2013-02-07 | 2014-01-22 | 协创立科数码电子(深圳)有限公司 | WiFi wireless sound box |
| CN104427642A (en) * | 2013-08-19 | 2015-03-18 | 广州杰赛科技股份有限公司 | Music or image sharing system |
| CN104754409A (en) * | 2013-12-27 | 2015-07-01 | 联芯科技有限公司 | Multimedia video playing system applied to Android platform and multimedia video playing method applied to multimedia video playing system of Android platform |
| CN104240735A (en) * | 2014-05-23 | 2014-12-24 | 杭州联汇数字科技有限公司 | Intelligent loudspeaker box audio playing method and system |
| CN104240735B (en) * | 2014-05-23 | 2017-05-10 | 杭州联汇数字科技有限公司 | Intelligent loudspeaker box audio playing method and system |
| CN106297225A (en) * | 2015-05-20 | 2017-01-04 | 天脉聚源（北京）科技有限公司 | The remote control thereof of a kind of home controller and system |
| CN105049982A (en) * | 2015-05-30 | 2015-11-11 | 广东欧珀移动通信有限公司 | Intelligent sound box and music play method based on intelligent sound box |
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| CN105072614A (en) * | 2015-08-10 | 2015-11-18 | 小米科技有限责任公司 | Method and device for controlling audio playing device |
| CN105262793A (en) * | 2015-09-09 | 2016-01-20 | 广东欧珀移动通信有限公司 | Method and system for playing audio file in storage device by intelligent speaker |
| CN105262793B (en) * | 2015-09-09 | 2019-04-19 | Oppo广东移动通信有限公司 | The method and system of audio file in intelligent sound box broadcasting memory |
| CN105261381A (en) * | 2015-10-19 | 2016-01-20 | 上海斐讯数据通信技术有限公司 | Audio playback method and device through router |
| CN106066891A (en) * | 2016-06-17 | 2016-11-02 | 中国科学院长春光学精密机械与物理研究所 | Data capture method, device and audio player |
| CN106341910A (en) * | 2016-09-29 | 2017-01-18 | 深圳Tcl新技术有限公司 | Audio transmission device and method |
| CN106453939A (en) * | 2016-10-28 | 2017-02-22 | 努比亚技术有限公司 | Streaming media access method and apparatus |
| CN106453939B (en) * | 2016-10-28 | 2020-06-26 | 和君纵达数据科技有限公司 | Streaming media access method and device |
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Effective date of registration: 20151215 Address after: Guangdong city in Guangzhou Province, Xinhua Street, Huadu District days Road 88 block A No. 6 Applicant after: SYSU HUADU INDUSTRIAL SCIENCE AND TECHNOLOGY INSTITUTE Address before: 510800 Guangzhou street, Xinhua Street, Huadu District, Guangdong, China, No. 8, Jinghu Applicant before: Sysung Electronics and Telecomm Research Institute |
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Application publication date: 20121107 |