CN103269469A - High fidelity 5.1 sound track wireless sound system - Google Patents
High fidelity 5.1 sound track wireless sound system Download PDFInfo
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- CN103269469A CN103269469A CN2013102006760A CN201310200676A CN103269469A CN 103269469 A CN103269469 A CN 103269469A CN 2013102006760 A CN2013102006760 A CN 2013102006760A CN 201310200676 A CN201310200676 A CN 201310200676A CN 103269469 A CN103269469 A CN 103269469A
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Abstract
The invention relates to a high fidelity 5.1 sound track wireless sound system, and belongs to the technical field of multi-media wireless communication. The wireless sound system mainly comprises a host machine and six voice frequency receiving slaves, and the host machine is connected with the voice frequency receiving slaves in a wireless mode. Networking and volume controlling of the host machine of the system and the voice frequency receiving slaves of the system are realized through the Zigbee technology, voice frequency wireless transmission is realized through the Pure Path Wireless technology, the complementary advantage of the Zigbee technology and the Pure Path Wireless technology are combined in the system, on the premise that high fidelity remote wireless transmission of 5.1 sound track voice frequency signals is realized, system efficiency is improved and the high fidelity 5.1 sound track wireless sound system is applicable to popularization and application.
Description
Technical field
The invention belongs to the multi-media radio communication technical field, particularly relate to a kind of high-fidelity 5.1 sound channel wireless sound systems.
Background technology
Tradition 5.1 sound channel sound systems great majority adopt wired mode to transmit signal, and audio amplifier is placed dumbly in the use, needs wiring in a large number, and system works efficient is very low.Wireless technology begins to be applied in the sound equipment field in recent years, most bluetooths that adopt wherein, one of infrared or FM technology.Yet adopt the sound system narrow bandwidth of Bluetooth technology, transmission range is near, and anti-interference aspect is unsatisfactory; Adopt the sound system directive property of infrared technique too strong, can not be blocked by object in the transmission course; And the sound system poor anti jamming capability of employing FM technology, confidentiality is not good, and tonequality is general.
Summary of the invention
Goal of the invention:
The invention provides a kind of high-fidelity 5.1 sound channel wireless sound systems, its purpose is the complementary advantage in conjunction with Zigbee technology and PurePath Wireless technology, guaranteeing the non-compression of audio signal, the low delay under the transmission prerequisite, improve system works efficient, realize transmitting than remote-wireless of audio signal.
Technical scheme:
The present invention is achieved through the following technical solutions:
A kind of high-fidelity 5.1 sound channel wireless sound systems, it is characterized in that: this sound system comprises that mainly main frame and six audio frequency receive slave, these six audio frequency receive slave and are respectively: preposition L channel reception slave, preposition R channel reception slave, center channels reception slave, supper bass sound channel receive slave, rearmounted L channel receives slave, rearmounted R channel reception slave, and main frame is connected by wireless mode and six audio frequency reception slaves.
Main frame comprises audio signal sample radiating circuit and volume control and display circuit; The audio signal sample radiating circuit comprises audio clock, dual-channel audio ADC, ANTENN AUDIO transceiver, and audio clock connects ANTENN AUDIO transceiver and dual-channel audio ADC, and the ANTENN AUDIO transceiver connects dual-channel audio ADC; Volume control comprises Zigbee module, liquid crystal display screen and keyboard with display circuit, and the Zigbee module connects liquid crystal display screen and keyboard.
The ANTENN AUDIO transceiver comprises ANTENN AUDIO chip, peripheral circuit, audio network status indicator lamp and pairing button, ANTENN AUDIO built-in chip type ARM Cortex M3 processor, wireless transceiver, the audio frequency coprocessor, the pairing button is connected with the ANTENN AUDIO chip with the audio network status indicator lamp.
Audio frequency receives slave and comprises ANTENN AUDIO transceiver, audio frequency DAC, volume controller, Zigbee module, audio-frequency power amplifier and audio amplifier binding post, the ANTENN AUDIO transceiver connects audio frequency DAC, audio frequency DAC connects volume controller, volume controller connects audio-frequency power amplifier and Zigbee module, and audio-frequency power amplifier connects the audio amplifier binding post.
Advantage and effect:
Enforcement by technical solution of the present invention, can realize to 5.1 vocal tract analog audio signals that with 48KHz non-compression wireless transmission is also carried out in the sampling of 24bit precision, in receiving terminal reduction and power amplification output, drive the function of audio amplifier sounding, wireless transmission distance can reach more than 100 meters.
Advantage of the present invention and good effect are:
1,5.1 channel audio signal wireless transmission have been removed wiring from, and audio amplifier is put flexibly;
2, eliminate the sound equipment line and inserted loss, promoted the operating efficiency of system, low-carbon environment-friendly;
2, the ANTENN AUDIO transmission plan has AFH, and forward error correction, voice data mistake retransmit, and a series of characteristics such as healing automatically after the network loss have good compossibility with other 2.4G system;
4, audio signal quality height is supported 24bit, the non-compression wireless transmission of 48KHz signal stream.
5, transmission delay is low to moderate 15ms;
6, the audio wireless transmission range is bigger than the lifting of conventional wireless sound system, can reach more than 100 meters.
7, adopt the Zigbee technology to realize system management, conveniently be connected with Smart Home.
Description of drawings:
Fig. 1 is overall schematic of the present invention;
Fig. 2 is main machine structure schematic diagram of the present invention;
Fig. 3 receives the slave structural representation for audio frequency of the present invention;
Fig. 4 is host circuit schematic diagram of the present invention;
Fig. 5 receives the slave circuit theory diagrams for audio frequency of the present invention;
Fig. 6 is ANTENN AUDIO transceiver circuit schematic diagram of the present invention;
Fig. 7 is host work flow chart of the present invention;
Fig. 8 receives the slave workflow diagram for audio frequency of the present invention.
Description of reference numerals:
1. main frame, 2. preposition L channel receives slave, 3. preposition R channel receives slave, 4. center channels receives slave, 5. the supper bass sound channel receives slave, 6. rearmounted L channel receives slave, 7. rearmounted R channel receives slave, 8. audio clock, 9. dual-channel audio ADC(dual-channel audio analog to digital converter), 10. ANTENN AUDIO transceiver, 11. Zigbee module, 12. liquid crystal display screen, 13. keyboard, 14. audio frequency DAC(audio digital to analog converter), 15. volume controller, 16. audio-frequency power amplifier, 17. audio amplifier binding post, 18. audio network status indicator lamp, 19. pairing button.
Embodiment:
Below in conjunction with accompanying drawing the present invention is added and to be described further:
The present invention is a kind of 5.1 sound channel wireless sound systems, it is characterized in that: Fig. 1 is general structure schematic diagram of the present invention, as shown in fig. 1: this sound system comprises that main frame 1 receives slave (hardware configuration is identical) with six audio frequency, and these six audio frequency receive slave and are respectively: preposition L channel reception slave 2, preposition R channel reception slave 3, center channels reception slave 4, supper bass sound channel receive slave 5, rearmounted L channel receives slave 6, rearmounted R channel reception slave 7; Main frame 1 receives slave by wireless mode and six audio frequency and is connected.
Fig. 2 is main machine structure schematic diagram of the present invention, and as shown in Figure 2: main frame 1 comprises audio signal sample radiating circuit and volume control and display circuit; The audio signal sample radiating circuit comprises audio clock 8, dual-channel audio ADC 9, ANTENN AUDIO transceiver 10, and audio clock 8 connects ANTENN AUDIO transceiver 10 and dual-channel audio ADC 9, and ANTENN AUDIO transceiver 10 connects dual-channel audio ADC 9; Volume control comprises Zigbee module 11, liquid crystal display screen 12 and keyboard 13 with display circuit, and Zigbee module 11 connects liquid crystal display screen 12 and keyboard 13.
Fig. 3 is that audio frequency of the present invention receives the slave structural representation, as shown in Figure 3: audio frequency receives slave and comprises ANTENN AUDIO transceiver 10, audio frequency DAC14, volume controller 15, Zigbee module 11, audio-frequency power amplifier 16 and audio amplifier binding post 17, ANTENN AUDIO transceiver 10 connects audio frequency DAC14, audio frequency DAC14 connects volume controller 15, volume controller 15 connects audio-frequency power amplifier 16 and Zigbee module 11, and audio-frequency power amplifier 16 connects audio amplifier binding post 17.
Fig. 6 is ANTENN AUDIO transceiver circuit schematic diagram of the present invention, as shown in Figure 6: ANTENN AUDIO transceiver 10 comprises ANTENN AUDIO chip, peripheral circuit, audio network status indicator lamp 18 and pairing button 19, ANTENN AUDIO built-in chip type ARM Cortex M3 processor, wireless transceiver and audio frequency coprocessor, pairing button 19 is connected with the ANTENN AUDIO chip with audio network status indicator lamp 18.
The physical circuit principle of main frame and slave such as Fig. 4, shown in Figure 5:
As shown in Figure 4: main frame 1 comprises six (5.1 sound channel) analogue audio frequency RCA receiving ports, three dual-channel audio ADC, audio clock and two ANTENN AUDIO transceivers, audio clock connects dual-channel audio ADC and ANTENN AUDIO transceiver, guarantee that the audio signal conversion is synchronous with the signal that sends, the RCA mouth receives the external analog audio signal transmission and finishes signal imitation to the conversion of numeral for dual-channel audio ADC, preposition L channel is connected the first dual-channel audio ADC with preposition R channel, center channels is connected the second dual-channel audio ADC with the supper bass sound channel, rearmounted L channel is connected the 3rd dual-channel audio ADC with rearmounted R channel, the I of first dual-channel audio ADC output
2The S digital audio stream connects the first ANTENN AUDIO transceiver, the I of second dual-channel audio ADC output
2DATA data wire in the S digital audio stream connects the first ANTENN AUDIO transceiver and the second ANTENN AUDIO transceiver, the I of the 3rd dual-channel audio ADC output
2The S digital audio stream connects the second ANTENN AUDIO transceiver.By such way six channel digital audio signals being sent into two ANTENN AUDIO transceivers sends; Volume control partly comprises Zigbee module, liquid crystal and keyboard with display module, and liquid crystal is connected with Zigbee by control bus, and button is connected the Zigbee module to have on the pin of interrupt function.
As shown in Figure 5: audio frequency receives slave and comprises ANTENN AUDIO transceiver, audio frequency DAC, volume controller, audio-frequency power amplifier and audio amplifier binding post, and the ANTENN AUDIO transceiver will be converted to I from the signal that main frame receives
2The S digital audio stream also reaches audio frequency DAC and is reduced to simulated audio signal, simulated audio signal enters audio-frequency power amplifier after by volume controller and carries out power amplification, the audio amplifier binding post connects the output of audio-frequency power amplifier so that be connected with outside audio amplifier, the Zigbee module is the control core that audio frequency receives slave, the Zigbee module is connected with volume controller by spi bus, realizes the Play Control to slave.
The ANTENN AUDIO transceiver is configured by PurePath Wireless Configurator software, finishes the download of configuration file by CC Debugger; Because the aerial speed of ANTENN AUDIO transceiver is 5M/ second, every cover transceiver can be realized the non-compression wireless transmission of three voice-grade channels at most, so used two cover ANTENN AUDIO transceivers in this system; Two ANTENN AUDIO transceivers in the main frame are configured to the Master pattern, and the ANTENN AUDIO transceiver that audio frequency receives in the slave is configured to the Slave module, realize the wireless transmission of six voice-grade channels by the configuration to inside modules audio stream and IO mapping; Need after program is downloaded and to be finished to each ANTENN AUDIO transceiver Master and with it corresponding ANTENN AUDIO transceiver Slave carry out pre-networking and match, process is as follows: ANTENN AUDIO transceiver Master and three ANTENN AUDIO transceiver Slave are powered on, can see that four audio network status indicator lamps 18 are all bright with about 0.02 second, 0.98 the rule of going out second begins flicker, at this moment press the pairing button 19 of an ANTENN AUDIO transceiver Master, press the pairing button 19 of an ANTENN AUDIO transceiver Slave then respectively, can see that four audio network status indicator lamps 18 are all bright with about 0.5 second, 0.5 the rule of going out second begins flicker, represent pre-networking success, finish pre-networking to another set of ANTENN AUDIO transceiver with identical way, so far, just can initiate network automatically after two cover ANTENN AUDIO transceivers power on, automatically add network and transmitting data in real time.
The concrete workflow of main frame and slave such as Fig. 7, shown in Figure 8:
Fig. 7 is host work flow chart of the present invention.Initialization, Zigbee module timer in the main initializes host, set interrupt priority level, the configuration input/output port, register data and liquid crystal display, after finishing, initialization from Flash, reads earlier last volume data, initiate the Zigbee network then and wait for that audio frequency receives Zigbee module in the slave and finishes network and add, after network connection is ready, the last volume data of Zigbee module broadcasting in the main frame receives slave for six audio frequency, Zigbee module in main frame wait button is pressed then, when having detected actuation of keys, Zigbee module parses control command, and control command is sent to audio frequency receive slave, after this upgrades liquid crystal display simultaneously, finishes, enter again and wait for the button down state; The transmitting-receiving of audio signal does not need the intervention of Zigbee module, and after powering on, the ANTENN AUDIO transceiver sends voice data automatically in real time and receives slave to audio frequency.
Fig. 8 is that audio frequency of the present invention receives the slave workflow diagram.After powering on, the Zigbee module that audio frequency receives in the slave begins initiating hardware, search has or not network after finishing, when searching network, can carry out network validation, confirm that the back transmission joins request, enter the wait command state after adding successfully, after receiving the volume control command of Zigbee module in the main frame, the Zigbee module enters the wait command state afterwards again by the renewal of spi bus realization volume.
This high-fidelity 5.1 sound channel wireless sound systems of the present invention, its purpose is that its purpose is the complementary advantage in conjunction with Zigbee technology and PurePath Wireless technology, guaranteeing the non-compression of audio signal, the low delay under the transmission prerequisite, improve system works efficient, realize transmitting than remote-wireless of audio signal.
Claims (4)
1. high-fidelity 5.1 sound channel wireless sound systems, it is characterized in that: this sound system comprises that mainly main frame (1) and six audio frequency receive slave, these six audio frequency receive slave and are respectively: preposition L channel reception slave (2), preposition R channel reception slave (3), center channels reception slave (4), supper bass sound channel receive slave (5), rearmounted L channel receives slave (6), rearmounted R channel reception slave (7), and main frame (1) is connected by wireless mode and six audio frequency reception slaves.
2. a kind of high-fidelity 5.1 sound channel wireless sound systems according to claim 1 is characterized in that: main frame (1) comprises audio signal sample radiating circuit and volume control and display circuit; The audio signal sample radiating circuit comprises audio clock (8), dual-channel audio ADC(9), ANTENN AUDIO transceiver (10), audio clock (8) connects ANTENN AUDIO transceiver (10) and dual-channel audio ADC, and ANTENN AUDIO transceiver (10) connects dual-channel audio ADC(9); Volume control comprises Zigbee module (11), liquid crystal display screen (12) and keyboard (13) with display circuit, and Zigbee module (11) connects liquid crystal display screen (12) and keyboard (13).
3. a kind of high-fidelity 5.1 sound channel wireless sound systems according to claim 2, it is characterized in that: ANTENN AUDIO transceiver (10) comprises ANTENN AUDIO chip, peripheral circuit, audio network status indicator lamp (18) and pairing button (19), ANTENN AUDIO built-in chip type ARM Cortex M3 processor, wireless transceiver, the audio frequency coprocessor, pairing button (19) is connected with the ANTENN AUDIO chip with audio network status indicator lamp (18).
4. a kind of high-fidelity 5.1 sound channel wireless sound systems according to claim 1, it is characterized in that: audio frequency receives slave and comprises ANTENN AUDIO transceiver (10), audio frequency DAC(14), volume controller (15), Zigbee module (11), audio-frequency power amplifier (16) and audio amplifier binding post (17), ANTENN AUDIO transceiver (10) connects audio frequency DAC(14), audio frequency DAC(14) connects volume controller (15), volume controller (15) connects audio-frequency power amplifier (16) and Zigbee module (11), and audio-frequency power amplifier (16) connects audio amplifier binding post (17).
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| CN2013102006760A CN103269469A (en) | 2013-05-27 | 2013-05-27 | High fidelity 5.1 sound track wireless sound system |
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Cited By (2)
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| CN104683921A (en) * | 2013-12-03 | 2015-06-03 | 史哲群 | Wireless sound system and playing method thereof |
| CN104902424A (en) * | 2015-04-07 | 2015-09-09 | 广东欧珀移动通信有限公司 | Control method, device and system for wireless intelligent equipment |
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| CN101656854A (en) * | 2009-09-11 | 2010-02-24 | 青岛海信电器股份有限公司 | Wireless audio system of video device |
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Patent Citations (4)
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| CN2822033Y (en) * | 2005-07-29 | 2006-09-27 | 联想(北京)有限公司 | Emitting module for wireless speaker and wireless speaker including it |
| CN101038492A (en) * | 2007-04-05 | 2007-09-19 | 复旦大学 | Intelligent house control system based on telephone and ZigBee technology |
| CN101656854A (en) * | 2009-09-11 | 2010-02-24 | 青岛海信电器股份有限公司 | Wireless audio system of video device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104683921A (en) * | 2013-12-03 | 2015-06-03 | 史哲群 | Wireless sound system and playing method thereof |
| CN104902424A (en) * | 2015-04-07 | 2015-09-09 | 广东欧珀移动通信有限公司 | Control method, device and system for wireless intelligent equipment |
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Application publication date: 20130828 |