CN102724609A - Portable wireless combined loudspeaker box system and control method thereof - Google Patents
Portable wireless combined loudspeaker box system and control method thereof Download PDFInfo
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Abstract
The invention relates to a portable wireless combined loudspeaker box system and a control method thereof. The portable wireless combined loudspeaker box system comprises a movable terminal with a Bluetooth signal transmission function, a main loudspeaker box and at least one satellite loudspeaker box. The control method comprises following steps of starting the main loudspeaker box and the satellite loudspeaker box; enabling the main loudspeaker box to enter an independent working mode; enabling the main loudspeaker box to enter a combined working mode from the independent working mode; enabling the satellite loudspeaker box to enter the independent working mode from the combined working mode; and enabling the satellite loudspeaker box to enter the combined working mode from the independent working mode. Any unit loudspeaker box in the portable wireless combined loudspeaker box system can be used independently, so that more playing choices can be provided for users, for example the main loudspeaker box and the satellite loudspeaker box are installed in different rooms of a family, so that the corresponding loudspeaker box can be selected for playing the music in different rooms, and convenience in use can be realized.
Description
Technical field
The present invention relates to the wireless sound box technology, be specifically related to portable mobile wireless combination sound box system and control method thereof.
Background technology
Along with the development and the rise of mobile Internet and intelligent mobile terminal, the source of sound of family and personal audio amusement equipment from traditional CD/DVD/PC to the migration of smart mobile phone/panel computer portable terminal, source of sound connects from wired and becomes wireless connections.Yet present composite type wireless sound box only provides the wireless connections play-back technology, and it is stiff to use, and can not satisfy more broadcast of user and user demand.
Summary of the invention
The object of the present invention is to provide a kind of portable mobile wireless combination sound box system and control method thereof, it can solve the stiff defective of use of the composite type wireless sound box of prior art.
In order to achieve the above object, the technical scheme that the present invention adopted is following:
A kind of portable mobile wireless combination sound box system, it comprises that one has the portable terminal of Bluetooth signal sending function, a main sound box, and at least one satellite audio amplifier; Said main sound box comprises first bluetooth module, the first audio processing module, first power amplifier, first loud speaker, 2.4G transmitter module, a MCU control module and first power module; First bluetooth module, 2.4G transmitter module, the first audio processing module, first power module all electrically connect with a MCU control module; First bluetooth module, first power amplifier, 2.4G transmitter module also electrically connect with the first audio processing module respectively; First loud speaker and first power amplifier electrically connect, and a MCU control module is used to control the keying of 2.4G transmitter module; Said satellite audio amplifier comprises second bluetooth module, the second audio processing module, second power amplifier, second loud speaker, 2.4G receiver module, the 2nd MCU control module and second source module; Second bluetooth module, 2.4G receiver module, the second audio processing module, second source module all electrically connect with the 2nd MCU control module; Second bluetooth module, second power amplifier, 2.4G receiver module also electrically connect with the second audio processing module respectively; Second loud speaker and second power amplifier electrically connect, and the 2nd MCU control module is used to the keying controlling the keying of 2.4G receiver module and control second bluetooth module; Portable terminal is used for sending audio signal through Bluetooth signal to first bluetooth module or second bluetooth module; 2.4G transmitter module is used for sending audio signal to the 2.4G receiver module.
As preferred construction, in order to indicate the operating state of main sound box and satellite audio amplifier, a MCU control module also connects a status indicator lamp A; The 2nd MCU control module also connects a status indicator lamp B.
Said portable terminal is smart mobile phone or panel computer.
A kind of control method that realizes above-mentioned portable mobile wireless combination sound box system; First bluetooth module of main sound box, the first audio processing module, first power amplifier, first loud speaker, 2.4G transmitter module, a MCU control module and first power module all are in starting state; Second bluetooth module of satellite audio amplifier, the second audio processing module, second power amplifier, second loud speaker, 2.4G receiver module, the 2nd MCU control module and second source module all are in starting state, and this control method may further comprise the steps:
A, main sound box get into the pattern that works independently, and carry out following steps:
A1, portable terminal send main sound box independent working mode instruction through Bluetooth signal to first bluetooth module of main sound box;
A2, first bluetooth module are transmitted to a MCU control module with main sound box independent working mode instruction;
A3, a MCU control module are closed the 2.4G transmitter module after receiving main sound box independent working mode instruction;
A4, portable terminal send audio signal, the first audio processing module of main sound box, first power amplifier, first loud speaker collaborative work and the playing back music through Bluetooth signal to first bluetooth module of main sound box;
B, main sound box get into the work in combination pattern from the pattern that works independently, and carry out following steps:
B1, portable terminal send main sound box work in combination mode instruction through Bluetooth signal to first bluetooth module of main sound box;
B2, first bluetooth module are transmitted to a MCU control module with main sound box work in combination mode instruction;
After B3, a MCU control module receive main sound box work in combination mode instruction, open the 2.4G transmitter module;
B4, portable terminal send audio signal through Bluetooth signal to first bluetooth module of main sound box; The first audio processing module of main sound box, first power amplifier, first loud speaker collaborative work and the playing back music; And first audio processing module instruction 2.4G transmitter module sends to the 2.4G receiver module of satellite audio amplifier, the second audio processing module of satellite audio amplifier, second power amplifier, second loud speaker collaborative work and the playing back music with audio signal;
C, satellite audio amplifier get into the pattern that works independently from the work in combination pattern, carry out following steps:
C1, portable terminal send satellite audio amplifier independent working mode instruction through Bluetooth signal to second bluetooth module of satellite audio amplifier;
C2, second bluetooth module are transmitted to the 2nd MCU control module with satellite audio amplifier independent working mode instruction;
C3, the 2nd MCU control module are closed the 2.4G receiver module after receiving satellite audio amplifier independent working mode instruction;
C4, portable terminal send audio signal, the second audio processing module of satellite audio amplifier, second power amplifier, second loud speaker collaborative work and the playing back music through Bluetooth signal to second bluetooth module of satellite audio amplifier;
D, satellite audio amplifier get into the work in combination pattern from the pattern that works independently, and carry out following steps:
D1, portable terminal send satellite audio amplifier work in combination mode instruction through Bluetooth signal to second bluetooth module of satellite audio amplifier;
D2, second bluetooth module are transmitted to the 2nd MCU control module with satellite audio amplifier work in combination mode instruction;
D3, the 2nd MCU control module are opened the 2.4G receiver module after receiving satellite audio amplifier work in combination mode instruction, and the 2nd MCU control module is also controlled second bluetooth module entering closed condition;
D4, portable terminal send audio signal through Bluetooth signal to first bluetooth module of main sound box; The first audio processing module of main sound box, first power amplifier, first loud speaker collaborative work and the playing back music; And first audio processing module instruction 2.4G transmitter module sends to the 2.4G receiver module of satellite audio amplifier, the second audio processing module of satellite audio amplifier, second power amplifier, second loud speaker collaborative work and the playing back music with audio signal.
As preferably, can get back to the pattern of working independently from the work in combination pattern in order to make the satellite audio amplifier, also have step e behind the step D4: portable terminal sends satellite audio amplifier independent working mode instruction through Bluetooth signal to first bluetooth module of main sound box; First bluetooth module is transmitted to a MCU control module with satellite audio amplifier independent working mode instruction; After the one MCU control module receives satellite audio amplifier independent working mode instruction, transmit satellite audio amplifier independent working mode instruction to the 2.4G of satellite audio amplifier receiver module through the 2.4G transmitter module; 2.4G receiver module is transmitted to the 2nd MCU control module to satellite audio amplifier independent working mode instruction, the 2nd MCU control module is opened second bluetooth module and is closed the 2.4G receiver module, and get back to step C4 after receiving satellite audio amplifier independent working mode instruction.
As preferably, in order to indicate the operating state of main sound box and satellite audio amplifier, also have following steps between steps A 3 and the steps A 4: a MCU control module state of a control indicator light A shows that main sound box is in the state of working alone; Also have following steps between step B3 and the step B4: a MCU control module state of a control indicator light A shows that main sound box is in the work in combination state; Also have following steps between step C3 and the step C4: the 2nd MCU control module state of a control indicator light B shows that the satellite audio amplifier is in the state of working alone; Also have following steps between step D3 and the step D4: the 2nd MCU control module state of a control indicator light B shows that the satellite audio amplifier is in the work in combination state.
The present invention has following beneficial effect:
Any unit audio amplifier in the portable mobile wireless combination sound box system can use separately; More play selection for the user; For example; Be installed in the different room of family to main sound box, satellite audio amplifier, the user can select corresponding audio amplifier to carry out music in different rooms, use convenience very.
Description of drawings
Fig. 1 is the functional-block diagram of the user mode one of the portable mobile wireless combination sound box system of preferred embodiment of the present invention;
Fig. 2 is the functional-block diagram of the user mode two of the portable mobile wireless combination sound box system of preferred embodiment of the present invention;
Fig. 3 is the functional-block diagram of the main sound box of Fig. 1;
Fig. 4 is the functional-block diagram of the satellite audio amplifier of Fig. 1;
Fig. 5 is the control method flow chart of the portable mobile wireless combination sound box system of preferred embodiment of the present invention.
Embodiment
Below, in conjunction with accompanying drawing and embodiment, the present invention done further describing, so that clearerly understand the present invention's technological thought required for protection.
Like Fig. 1 to shown in Figure 4, a kind of portable mobile wireless combination sound box system, it comprises that one has the portable terminal of Bluetooth signal sending function, a main sound box, and at least one satellite audio amplifier.For the ease of describing, the quantity of the satellite audio amplifier of present embodiment is one (in fact, can be according to user demand, quantity can be 3,4,6 etc.).
Said main sound box comprises first bluetooth module, the first audio processing module, first power amplifier, first loud speaker, 2.4G transmitter module, status indicator lamp A, a MCU control module and first power module.Status indicator lamp A, first bluetooth module, 2.4G transmitter module, the first audio processing module, first power module all electrically connect with a MCU control module; First bluetooth module, first power amplifier, 2.4G transmitter module also electrically connect with the first audio processing module respectively; First loud speaker and first power amplifier electrically connect, and a MCU control module is used to control the keying of 2.4G transmitter module.
Said satellite audio amplifier comprises second bluetooth module, the second audio processing module, second power amplifier, second loud speaker, 2.4G receiver module, status indicator lamp B, the 2nd MCU control module and second source module.Status indicator lamp B, second bluetooth module, 2.4G receiver module, the second audio processing module, second source module all electrically connect with the 2nd MCU control module; Second bluetooth module, second power amplifier, 2.4G receiver module also electrically connect with the second audio processing module respectively; Second loud speaker and second power amplifier electrically connect, and the 2nd MCU control module is used to the keying controlling the keying of 2.4G receiver module and control second bluetooth module.
Portable terminal is used for sending audio signal through Bluetooth signal to first bluetooth module or second bluetooth module; 2.4G transmitter module is used for sending audio signal to the 2.4G receiver module, promptly the 2.4G transmitter module sends audio signal through the 2.4G signal to the 2.4G receiver module.The portable terminal of present embodiment can be smart mobile phone or panel computer.
Below, in conjunction with Fig. 5, describe the control method of above-mentioned portable mobile wireless combination sound box system in detail.
S01: start main sound box and satellite audio amplifier; First bluetooth module, the first audio processing module, first power amplifier, first loud speaker, 2.4G transmitter module, a MCU control module and first power module that are main sound box all are in starting state, and second bluetooth module of satellite audio amplifier, the second audio processing module, second power amplifier, second loud speaker, 2.4G receiver module, the 2nd MCU control module and second source module all are in starting state.
S02: main sound box gets into the pattern that works independently, and carries out following steps:
A1, portable terminal send main sound box independent working mode instruction through Bluetooth signal to first bluetooth module of main sound box;
A2, first bluetooth module are transmitted to a MCU control module with main sound box independent working mode instruction;
A3, a MCU control module are closed the 2.4G transmitter module after receiving main sound box independent working mode instruction;
A4, a MCU control module state of a control indicator light A (as: status indicator lamp A shiny red) show that main sound box is in the state of working alone;
A5, portable terminal send audio signal through Bluetooth signal to first bluetooth module of main sound box; (the first audio module is decoded to audio signal for the first audio processing module of main sound box, first power amplifier, the first loud speaker collaborative work and playing back music; Play through first power amplifier, the first loud speaker collaborative work then; Its three's the collaborative work principle of playing back music then is identical with prior art, just repeats no more here);
S03: main sound box gets into the work in combination pattern from the pattern that works independently, and carries out following steps:
B1, portable terminal send main sound box work in combination mode instruction through Bluetooth signal to first bluetooth module of main sound box;
B2, first bluetooth module are transmitted to a MCU control module with main sound box work in combination mode instruction;
After B3, a MCU control module receive main sound box work in combination mode instruction, open the 2.4G transmitter module;
B4, a MCU control module state of a control indicator light A (as: status indicator lamp A bright green) show that main sound box is in the work in combination state;
B5, portable terminal send audio signal through Bluetooth signal to first bluetooth module of main sound box; The first audio processing module of main sound box, first power amplifier, first loud speaker collaborative work and the playing back music; And first audio processing module instruction 2.4G transmitter module sends to the 2.4G receiver module of satellite audio amplifier, the second audio processing module of satellite audio amplifier, second power amplifier, second loud speaker collaborative work and the playing back music with audio signal;
S04: the satellite audio amplifier gets into the pattern that works independently from the work in combination pattern, carries out following steps:
C1, portable terminal send satellite audio amplifier independent working mode instruction through Bluetooth signal to second bluetooth module of satellite audio amplifier;
C2, second bluetooth module are transmitted to the 2nd MCU control module with satellite audio amplifier independent working mode instruction;
C3, the 2nd MCU control module are closed the 2.4G receiver module after receiving satellite audio amplifier independent working mode instruction;
C4, the 2nd MCU control module state of a control indicator light B (as: status indicator lamp B shiny red) show that the satellite audio amplifier is in the state of working alone;
C5, portable terminal send audio signal, the second audio processing module of satellite audio amplifier, second power amplifier, second loud speaker collaborative work and the playing back music through Bluetooth signal to second bluetooth module of satellite audio amplifier;
S05: the satellite audio amplifier gets into the work in combination pattern from the pattern that works independently, and carries out following steps:
D1, portable terminal send satellite audio amplifier work in combination mode instruction through Bluetooth signal to second bluetooth module of satellite audio amplifier;
D2, second bluetooth module are transmitted to the 2nd MCU control module with satellite audio amplifier work in combination mode instruction;
D3, the 2nd MCU control module are opened the 2.4G receiver module after receiving satellite audio amplifier work in combination mode instruction, and the 2nd MCU control module is also controlled second bluetooth module entering closed condition;
D4, the 2nd MCU control module state of a control indicator light B (as: status indicator lamp B bright green) show that the satellite audio amplifier is in the work in combination state;
D5, portable terminal send audio signal through Bluetooth signal to first bluetooth module of main sound box; The first audio processing module of main sound box, first power amplifier, first loud speaker collaborative work and the playing back music; And first audio processing module instruction 2.4G transmitter module sends to the 2.4G receiver module of satellite audio amplifier, the second audio processing module of satellite audio amplifier, second power amplifier, second loud speaker collaborative work and the playing back music with audio signal.
D6, portable terminal send satellite audio amplifier independent working mode instruction through Bluetooth signal to first bluetooth module of main sound box; First bluetooth module is transmitted to a MCU control module with satellite audio amplifier independent working mode instruction; After the one MCU control module receives satellite audio amplifier independent working mode instruction, transmit satellite audio amplifier independent working mode instruction to the 2.4G of satellite audio amplifier receiver module through the 2.4G transmitter module; 2.4G receiver module is transmitted to the 2nd MCU control module to satellite audio amplifier independent working mode instruction; After the 2nd MCU control module receives satellite audio amplifier independent working mode instruction; Open second bluetooth module and close the 2.4G receiver module, get back to the step C4 of step S04.
In addition, present embodiment is for the ease of explanation, just the restricted number of satellite audio amplifier at one; And in fact, the quantity of satellite audio amplifier can be a plurality of, as long as before control; A plurality of satellite audio amplifier numberings; In control satellite audio amplifier, when sending satellite audio amplifier independent working mode instruction or satellite audio amplifier work in combination mode instruction, which satellite audio amplifier the coded command of collaborative transmission reference numeral can realize accurately controlling then.
In the foregoing description, in fact, portable terminal uses as source of sound.
Present embodiment utilizes the wireless combination sound box system of bluetooth and 2.4G combination technology to mainly contain following characteristics:
1) along with the development of present mobile Internet and intelligent mobile terminal, the source of sound at audio entertain mem terminal becomes intelligent mobile terminal gradually.
2) along with intelligent mobile terminal is popularized bluetooth applications, the audio frequency connection becomes possibility from wired to wireless, gradually people are freed from wired constraint, and it is infinitely free to return people.
3) the multicast technology with 2.4G fully combines with Bluetooth technology, creates portable mobile wireless combination sound box system, lets people any corner can easily enjoy wireless music at home
4) utilize the open application development platform of Android, can be on intelligent mobile terminal Application and Development Apps, reach this wireless combination sound box system of random control, bring unlimited enjoyment of people and unprecedented experience
5) any unit can use separately in this system, and people can freely be selected.
For a person skilled in the art, can make other various corresponding changes and distortion, and these all changes and distortion should belong within the protection range of claim of the present invention all according to the technical scheme and the design of above description.
Claims (6)
1. portable mobile wireless combination sound box system is characterized in that, comprises that one has the portable terminal of Bluetooth signal sending function, a main sound box, and at least one satellite audio amplifier; Said main sound box comprises first bluetooth module, the first audio processing module, first power amplifier, first loud speaker, 2.4G transmitter module, a MCU control module and first power module; First bluetooth module, 2.4G transmitter module, the first audio processing module, first power module all electrically connect with a MCU control module; First bluetooth module, first power amplifier, 2.4G transmitter module also electrically connect with the first audio processing module respectively; First loud speaker and first power amplifier electrically connect, and a MCU control module is used to control the keying of 2.4G transmitter module; Said satellite audio amplifier comprises second bluetooth module, the second audio processing module, second power amplifier, second loud speaker, 2.4G receiver module, the 2nd MCU control module and second source module; Second bluetooth module, 2.4G receiver module, the second audio processing module, second source module all electrically connect with the 2nd MCU control module; Second bluetooth module, second power amplifier, 2.4G receiver module also electrically connect with the second audio processing module respectively; Second loud speaker and second power amplifier electrically connect, and the 2nd MCU control module is used to the keying controlling the keying of 2.4G receiver module and control second bluetooth module; Portable terminal is used for sending audio signal through Bluetooth signal to first bluetooth module or second bluetooth module; 2.4G transmitter module is used for sending audio signal to the 2.4G receiver module.
2. portable mobile wireless combination sound box as claimed in claim 1 system is characterized in that a MCU control module also connects a status indicator lamp A; The 2nd MCU control module also connects a status indicator lamp B.
3. portable mobile wireless combination sound box as claimed in claim 1 system is characterized in that said portable terminal is smart mobile phone or panel computer.
4. the control method of a portable mobile wireless combination sound box as claimed in claim 1 system; It is characterized in that; First bluetooth module of main sound box, the first audio processing module, first power amplifier, first loud speaker, 2.4G transmitter module, a MCU control module and first power module all are in starting state; Second bluetooth module of satellite audio amplifier, the second audio processing module, second power amplifier, second loud speaker, 2.4G receiver module, the 2nd MCU control module and second source module all are in starting state, and this control method may further comprise the steps:
A, main sound box get into the pattern that works independently, and carry out following steps:
A1, portable terminal send main sound box independent working mode instruction through Bluetooth signal to first bluetooth module of main sound box;
A2, first bluetooth module are transmitted to a MCU control module with main sound box independent working mode instruction;
A3, a MCU control module are closed the 2.4G transmitter module after receiving main sound box independent working mode instruction;
A4, portable terminal send audio signal, the first audio processing module of main sound box, first power amplifier, first loud speaker collaborative work and the playing back music through Bluetooth signal to first bluetooth module of main sound box;
B, main sound box get into the work in combination pattern from the pattern that works independently, and carry out following steps:
B1, portable terminal send main sound box work in combination mode instruction through Bluetooth signal to first bluetooth module of main sound box;
B2, first bluetooth module are transmitted to a MCU control module with main sound box work in combination mode instruction;
After B3, a MCU control module receive main sound box work in combination mode instruction, open the 2.4G transmitter module;
B4, portable terminal send audio signal through Bluetooth signal to first bluetooth module of main sound box; The first audio processing module of main sound box, first power amplifier, first loud speaker collaborative work and the playing back music; And first audio processing module instruction 2.4G transmitter module sends to the 2.4G receiver module of satellite audio amplifier, the second audio processing module of satellite audio amplifier, second power amplifier, second loud speaker collaborative work and the playing back music with audio signal;
C, satellite audio amplifier get into the pattern that works independently from the work in combination pattern, carry out following steps:
C1, portable terminal send satellite audio amplifier independent working mode instruction through Bluetooth signal to second bluetooth module of satellite audio amplifier;
C2, second bluetooth module are transmitted to the 2nd MCU control module with satellite audio amplifier independent working mode instruction;
C3, the 2nd MCU control module are closed the 2.4G receiver module after receiving satellite audio amplifier independent working mode instruction;
C4, portable terminal send audio signal, the second audio processing module of satellite audio amplifier, second power amplifier, second loud speaker collaborative work and the playing back music through Bluetooth signal to second bluetooth module of satellite audio amplifier;
D, satellite audio amplifier get into the work in combination pattern from the pattern that works independently, and carry out following steps:
D1, portable terminal send satellite audio amplifier work in combination mode instruction through Bluetooth signal to second bluetooth module of satellite audio amplifier;
D2, second bluetooth module are transmitted to the 2nd MCU control module with satellite audio amplifier work in combination mode instruction;
D3, the 2nd MCU control module are opened the 2.4G receiver module after receiving satellite audio amplifier work in combination mode instruction, and the 2nd MCU control module is also controlled second bluetooth module entering closed condition;
D4, portable terminal send audio signal through Bluetooth signal to first bluetooth module of main sound box; The first audio processing module of main sound box, first power amplifier, first loud speaker collaborative work and the playing back music; And first audio processing module instruction 2.4G transmitter module sends to the 2.4G receiver module of satellite audio amplifier, the second audio processing module of satellite audio amplifier, second power amplifier, second loud speaker collaborative work and the playing back music with audio signal.
5. control method as claimed in claim 4 is characterized in that, also has step e behind the step D4: portable terminal sends satellite audio amplifier independent working mode instruction through Bluetooth signal to first bluetooth module of main sound box; First bluetooth module is transmitted to a MCU control module with satellite audio amplifier independent working mode instruction; After the one MCU control module receives satellite audio amplifier independent working mode instruction, transmit satellite audio amplifier independent working mode instruction to the 2.4G of satellite audio amplifier receiver module through the 2.4G transmitter module; 2.4G receiver module is transmitted to the 2nd MCU control module to satellite audio amplifier independent working mode instruction, the 2nd MCU control module is opened second bluetooth module and is closed the 2.4G receiver module, and get back to step C4 after receiving satellite audio amplifier independent working mode instruction.
6. control method as claimed in claim 4 is characterized in that, also has following steps between steps A 3 and the steps A 4: a MCU control module state of a control indicator light A shows that main sound box is in the state of working alone; Also have following steps between step B3 and the step B4: a MCU control module state of a control indicator light A shows that main sound box is in the work in combination state; Also have following steps between step C3 and the step C4: the 2nd MCU control module state of a control indicator light B shows that the satellite audio amplifier is in the state of working alone; Also have following steps between step D3 and the step D4: the 2nd MCU control module state of a control indicator light B shows that the satellite audio amplifier is in the work in combination state.
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| CN103607228A (en) * | 2013-11-29 | 2014-02-26 | 深圳市禹欣鑫电子有限公司 | Audio system based on Bluetooth transmission technology |
| WO2014107933A1 (en) * | 2013-01-14 | 2014-07-17 | 浙江生辉照明有限公司 | Multi-functional led device and multi-functional loudspeaker box system |
| WO2014117425A1 (en) * | 2013-02-01 | 2014-08-07 | 浙江生辉照明有限公司 | Multifunctional led device and multifunctional wireless conference system |
| WO2015149678A1 (en) * | 2014-04-04 | 2015-10-08 | Sengled Optoelectronics Co., Ltd | Wireless speaker system and wireless data transmission method |
| CN105025390A (en) * | 2015-07-09 | 2015-11-04 | 广东欧珀移动通信有限公司 | Play scene storage method and system, play terminal and control terminal |
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| CN107018469A (en) * | 2015-10-30 | 2017-08-04 | 创科（澳门离岸商业服务）有限公司 | Wireless loudspeaker system |
| CN113163302A (en) * | 2020-01-22 | 2021-07-23 | 原相科技股份有限公司 | True wireless multi-sound channel loudspeaking device and multi-sound source sounding method thereof |
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