CN1392750A - Acoustic system with radio loudspeaker - Google Patents
Acoustic system with radio loudspeaker Download PDFInfo
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- CN1392750A CN1392750A CN 02140507 CN02140507A CN1392750A CN 1392750 A CN1392750 A CN 1392750A CN 02140507 CN02140507 CN 02140507 CN 02140507 A CN02140507 A CN 02140507A CN 1392750 A CN1392750 A CN 1392750A
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Abstract
The present invention refers to a kind of sound system which uses wireless loudspeaker includes: a main frame, which can produce sound data; an amplifier, which receives the sound data and makes a signal processing to the sound data to produce an electromagnet wave carrying on the sound data; and a wireless loudspeaker combination which includes multiple wireless loudspeaker. Each wireless loudspeaker includes a sound data receiving aerial, a sound data receiver and a loudspeaker. Therewith the sound data receiving aerial receives the electromagnet wave, the sound data receive reproduces the sound data carrier on electromagnet wave to produce an analog sound data and transfer to the loudspeaker.
Description
Technical field
The present invention relates to sound system, and be particularly related to a kind of sound system that uses wireless speaker.
Background technology
Along with development of science and technology and progress, people are for also relative more and more higher of the requirement of quality of the life, and listening to the music becomes the interest of general common people's hobby gradually with one of movable.For the ease of listening to the music of oneself liking at any time, therefore, sound system has almost become the electrical appliance of each family's indispensability.Because it is more and more higher that people require for the convenience of the quality of music and music, the access mode of voice data is by early stage disc record, audiotape, slowly evolve to the most general present compact disc.In addition, the loud speaker in the sound system is through long-term development and improvement, and also becoming becomes increasingly complex, and certainly, the sound quality that it sent also has significant progress.
Please refer to Fig. 1, its illustrate is a kind of common basic acoustic structure.In this basic acoustic structure, comprise a main frame 100, comprised a broadcast receiver (Radio) 105, a player (Player) 110, a radio antenna (Radio Antenna) 115 and loud speaker (Speaker) 120 in this main frame.Wherein, the electromagnetic wave that broadcast receiver 105 utilizes radio antenna 115 will transmit frequency modulation (FM) or amplitude modulation (AM) in the space receives into broadcast receiver 105, is converted into voice data through special modulation tech again, and is sent to loud speaker 120 and sounds.Perhaps, player 110 will be deposited in the voice data of audiotape or disc record, be sent to loud speaker 120, also can sound.
Along with the progress of science and technology and the lifting of quality of the life, the general common people require also more and more higher for the sound quality of sound system, the sound quality of common as shown in Figure 1 basic announcement acoustic system can not satisfy grass-roots demand, in order to improve the sound quality of common sound system, it is complicated that speaker design more becomes, and the quantity of institute's use loud speaker and the ornaments of each loudspeaker position are also more and more paid attention to.Therefore, the evolution slowly of common as shown in Figure 1 basic announcement acoustic system is to the sound system as Fig. 2 and the wired loud speaker of use shown in Figure 3.
Please refer to Fig. 2, this uses the sound system of wired loud speaker to comprise a main frame 200, a loud speaker (Speaker) combination 220 and transmission of sound signals line (Signal Line) 225, comprise a player (Player) 210, a broadcast receiver (Radio) 205, a radio antenna (RadioAntenna) 215 and an expander (Amplifying unit) 230 in this main frame 200, this speaker combination 220 comprises several loud speakers.The electromagnetic wave that broadcast receiver 205 utilizes radio antenna 215 will transmit frequency modulation (FM) or amplitude modulation (AM) in the space receives into broadcast receiver 205, is converted into voice data through special modulation tech again and is sent to expander 230.Perhaps, player 210 voice data that will deposit in audiotape or disc record is sent to expander 230.The program that voice data is handled through distinctive signal in expander 230 again, the quality of reinforcement voice data, the voice data that will handle is sent to this speaker combination 220 by transmission of sound signals line 225 and sounds again.
Please refer to Fig. 3, this uses the sound system of wired loud speaker to comprise a main frame 300, an enlarger (Amplifier) 330, a loud speaker (Speaker) combination 320 and transmission of sound signals line (SignalLine) 325, comprise a player (Player) 310, a broadcast receiver (Radio) 305 and a radio antenna (Radio Antenna) 315 in this main frame 300, this speaker combination 220 comprises several loud speakers.The electromagnetic wave that broadcast receiver 305 utilizes radio antenna 315 will transmit frequency modulation (FM) or amplitude modulation (AM) in the space receives into broadcast receiver 305, is converted into voice data through special modulation tech again and is sent to enlarger 330.Moreover the voice data that player 310 will be deposited in audiotape or disc record is sent to enlarger 330.The program that voice data is handled through distinctive signal in enlarger 330 again, the quality of reinforcement voice data, the voice data that will handle is sent to this speaker combination 320 by transmission of sound signals line 325 and sounds again.
In order to improve the quality of voice data, make the richer variation of voice data, increased the expander and the enlarger that can carry out the distinctive signal handling procedure respectively as the sound system of Fig. 2 and the wired loud speaker of use shown in Figure 3 to voice data.In addition, in order to promote the sound quality of sound system, the ornaments position of the quantity of institute's use loud speaker and each loud speaker also must take in the speaker combination.Therefore, for each loud speaker is put in certain location, the voice data of handling must pass through the transmission of sound signals line, the voice data of handling is sent to each loud speaker by expander or enlarger, will certainly use many tediously long transmission of sound signals lines, therefore also can cause use wired loud speaker sound system in carrying, in the assembling with the variety of problems of setting up with inconvenient, its employed many transmission of sound signals lines also can cause many puzzlements and unbecoming.
In above-mentioned background of invention, use the sound system of wired loud speaker will be in the face of carrying is gone up, assembling is gone up and the variety of problems of setting up and inconvenient, its employed many transmission of sound signals lines also can cause many puzzlements and unbecoming.Therefore, the present invention is directed to the demand, a kind of sound system that uses wireless speaker is provided.
Summary of the invention
The object of the present invention is to provide a kind of sound system that uses wireless speaker, can avoid using many tediously long transmission of sound signals lines effectively between enlarger and loud speaker, and effectively solve use wired loud speaker sound system in carrying, in the assembling and set up the variety of problems that often runs into, use many puzzlements that many tediously long transmission of sound signals lines are caused and unbecoming with it.
The object of the present invention is achieved like this:
The invention discloses a kind of sound system that uses wireless speaker, comprising: this main frame is in order to provide voice data, and this main frame comprises broadcast receiver or player at least; Enlarger is in order to receive voice data, and make signal processing and move, in order to produce the voice data of handling, wherein enlarger also comprises voice data emission device and voice data emission antenna, and the voice data that voice data emission device will be handled is mixed down radiofrequency signal and becomes electromagnetic wave by voice data emission antenna emitting radio frequency signal; And wireless speaker combination, comprise a plurality of wireless speakers, each wireless speaker comprises the voice data reception antenna, the voice data receiver, with loud speaker, wherein the voice data reception antenna receives electromagnetic wave, and the voice data receiver is in order to be reduced into electromagnetic wave radiofrequency signal and to produce analog voice data in order to be sent to this loud speaker.
The present invention also discloses a kind of sound system that uses wireless speaker, comprising: a main frame produces a voice data; One enlarger in order to receiving this voice data, and is done signal processing action and then is produced an electromagnetic wave that is loaded with this voice data this voice data; An and wireless speaker combination, comprise a plurality of wireless speakers, each this wireless speaker comprises a voice data reception antenna, one voice data receiver, with a loud speaker, wherein this voice data reception antenna receives this electromagnetic wave, and this voice data receiver produces an analog voice data in order to this voice data reduction that this electromagnetic wave is contained and is sent to this loud speaker, and then promotes this loud speaker sounding.
According to above-mentioned conception, the sound system of use wireless speaker of the present invention, wherein this enlarger comprises voice data emission device and voice data emission antenna, and this voice data emission device is mixed down this voice data one radiofrequency signal and launches this radiofrequency signal by this voice data emission antenna becomes the electromagnetic wave that this is loaded with this voice data.
According to above-mentioned conception, the sound system of use wireless speaker of the present invention, wherein, this voice data emission device comprises: a local oscillator, in order to produce a harmonic signal; One or nine ten degree phase shifters are in order to spend this harmonic signal phase shift 90; One first frequency mixer is in order to mixing one first fundamental frequency signal and this harmonic signal; One second frequency mixer is in order to the harmonic signal of mixing one second fundamental frequency signal and this phase shift 90 degree; One adder is in order to the output addition with this first frequency mixer and this second frequency mixer; And a power amplifier, in order to amplify the output of this adder.
According to above-mentioned conception, the sound system of use wireless speaker of the present invention, wherein, this voice data receiver comprises: a low-frequency noise amplifier, in order to amplifying by this voice data emission this radiofrequency signal that antenna received; One local oscillator is in order to produce a harmonic signal; One or nine ten degree phase shifters are in order to spend this harmonic signal phase shift 90; One first frequency mixer is in order to this radiofrequency signal of mixing and this harmonic signal; And one second frequency mixer, in order to the harmonic signal of this radiofrequency signal of mixing and this phase shift 90 degree.
According to above-mentioned conception, the sound system of use wireless speaker of the present invention, wherein this main frame comprise at least a broadcast receiver and a player one of them.
Preferred embodiment of the present invention will be aided with following figure and do more detailed elaboration in comment backward.
Description of drawings
Fig. 1 is common basic announcement acoustic system structure chart;
Fig. 2 is a kind of sound system structure chart that uses wired loud speaker;
Fig. 3 is the another kind of sound system structure chart that uses wired loud speaker;
Fig. 4 is a kind of sound system structure chart that uses wireless speaker;
Fig. 5 is the star Butut (Constellation) of quaternary phase shift key (Quadrature Phase Shift Keying abbreviates QPSK as);
Fig. 6 is a kind of radio frequency structure figure of voice data conveyer; And,
Fig. 7 is a kind of radio frequency structure figure of voice data receiver.
The figure number explanation:
100 main frames, 105 broadcast receivers
110 players, 115 radio antennas
120 loud speakers, 200 main frames
205 broadcast receivers, 210 players
215 radio antennas, 220 speaker combination
225 transmission of sound signals lines, 230 expanders
300 main frames, 305 broadcast receivers
310 players, 315 radio antennas
320 speaker combination, 325 transmission of sound signals lines
330 enlargers, 400 main frames
405 broadcast receivers, 410 players
The combination of 415 radio antennas, 420 wireless speakers
425 loud speakers
430 enlargers, 435 voice datas emission device
440 voice datas emission antenna, 445 voice data receivers
450 voice data reception antennas, 605 frequency mixers
610 add circuits, 615 power amplifiers
620 voice datas emission antenna, 625 local oscillators
630 90 degree phase shifters, 705 frequency mixers
715 low noise amplifiers, 720 voice data reception antennas
725 local oscillators, 730 90 degree phase shifters
Embodiment
Owing to use the sound system of wired loud speaker need are used many tediously long data transmission in network telephony lines, carrying is gone up with suffering from, assembling is gone up and the variety of problems of setting up and inconvenient, and its employed many transmission of sound signals lines also can cause many puzzlements and unbecoming.Therefore, the present invention is directed to the demand, a kind of sound system that uses wireless speaker is provided.
As shown in Figure 4 for this reason the invention an embodiment, please refer to Fig. 4, the sound system of this use wireless speaker comprises a main frame 400, one enlarger (Amplifier) 430 and a wireless speaker (Speaker) combination 420, comprise a player (Player) 410 in this main frame, one broadcast receiver (Radio) 405 and a radio antenna (Radio Antenna) 415, this enlarger more comprises voice data emission device (Transmitter) 435 and voice data emission antenna (Transmit Antenna) 440, this wireless speaker combination 420 comprises several wireless speakers, also comprises a loud speaker 425 in each wireless speaker, an one voice data receiver (Receiver) 445 and a voice data reception antenna (ReceiveAntenna) 450.
The electromagnetic wave that broadcast receiver 405 utilizes radio antenna 415 will transmit frequency modulation (FM) or amplitude modulation (AM) in the space receives into broadcast receiver 405, is converted into voice data through special modulation tech again and is sent to enlarger 430.Perhaps, player 410 voice data that will deposit in audiotape or disc record is sent to enlarger 430.The program that voice data is handled through distinctive signal in enlarger 430 again, strengthen the quality of voice data, the voice data of handling by voice data emission device 435, is radio frequency (Radio Frequency) signal with voice data modulation (Modulation) raising frequency again.
In the present embodiment, the voice data that enlarger 430 was handled is a digital signal, so the raising frequency modulation tech in voice data emission device 435 is selected quaternary phase shift key (Quadrature Phase ShiftKeying, abbreviate QPSK as) digital modulation (Digital Modulation), this modulation tech utilizes the phase place (Phase) of radiofrequency signal to transmit each byte (bite), as shown in Figure 5, when phase place is 45 degree interval scales " 00 ", when phase place is 135 degree interval scales " 01 ", when phase place is 225 degree interval scales " 11 ", when phase place is 315 degree interval scales " 10 ".
The radio circuit framework of voice data emission device as shown in Figure 6, select better simply direct conversion (Direct-Conversion) framework, this kind framework can directly only can be tuned as radiofrequency signal by raising frequency through a mixing (mix) with fundamental frequency (Base Band) signal.Please refer to Fig. 6, (Local Oscillator abbreviates L0 as to the local oscillator among Fig. 6.) 625 launch the harmonic signal that frequency is a radio frequency (Sinusoidal Signal), be used for transmitting the fundamental frequency I signal of phase place and the harmonic signal mixing that the fundamental frequency Q signal utilizes frequency mixer (mixer) 605 and local oscillator to send with two respectively, and one of them harmonic signal is before entering frequency mixer, must phase place be adjusted 90 degree via 90 degree phase shifters (90 Degrees Phase Shifter) 630.Then, utilize add circuit (adder) 610 to add up to a radiofrequency signal two signals by the raising frequency modulation, this radiofrequency signal must (PowerAmplifier abbreviates PA as by a power amplifier again.) 615 increase the intensity of signals.At last, transmit antenna 620 by voice data again this emission of radio frequency signals is become electromagnetic wave to the space.
Please refer to Fig. 4, in on the other hand, the voice data reception antenna 450 moments ground of each wireless speaker in this wireless speaker combination 420 is launched electromagnetic wave that antenna 440 launches with voice data and is received into that voice data receiver (Receiver) 445 becomes radiofrequency signal.This voice data receiver radio frequency circuit framework is also selected better simply direct converting structure as shown in Figure 7, and it is fundamental frequency signal that this kind framework can directly only get final product demodulation (Demodulation) frequency reducing through a mixing (mix) with radiofrequency signal.Please refer to Fig. 7, because the radiofrequency signal that voice data reception antenna 720 receives is very faint, so (Low Noise Amplifier abbreviates LNA as through a low noise amplifier in necessary elder generation.) 715 radiofrequency signal amplified, then, it is that two signals enter frequency mixer 705 respectively that the radiofrequency signal after amplifying is divided equally.Local oscillator 725 is launched the harmonic signal that frequency is a radio frequency (Sinusoidal Signal), the harmonic signal mixing that respectively radiofrequency signal after two amplifications is utilized frequency mixer (mixer) 725 and local oscillator 725 to send, and one of them harmonic signal is before entering frequency mixer, must phase place be adjusted 90 degree via 90 degree phase shifters (90 Degrees PhaseShifter), radiofrequency signal and harmonic signal be necessary same-phase (In Phase) when entering frequency mixer, thus, the harmonic signal composition in the radiofrequency signal could be removed fully and obtain fundamental frequency I signal and fundamental frequency Q signal respectively.
Please refer to Fig. 4, after obtaining original voice data by voice data receiver 445, voice data that also must numeral (Digital) form is converted to the voice data of simulation (Analog) form that can promote loud speaker 425, and is sent to loud speaker 425 and sounds.
Utilize the present invention can avoid using many tediously long transmission of sound signals lines effectively between enlarger and loud speaker, and effectively solve use wired loud speaker sound system in carrying, in the assembling and set up the variety of problems that often runs into, use many puzzlements that many tediously long transmission of sound signals lines are caused and unbecoming with it.
The above is preferred embodiment of the present invention only, is not in order to limiting claim of the present invention, and all other do not break away from the equivalence of being finished under the disclosed spirit and change or modify, and all should be included in the scope of patent protection.
Claims (10)
1. a sound system that uses wireless speaker is characterized in that, comprising:
One main frame, this main frame be in order to providing a voice data, and this main frame comprises at least, a broadcast receiver and a player one of them;
One enlarger is in order to receive this voice data, and make a signal processing and move, in order to produce a voice data of handling, wherein this enlarger also comprises voice data emission device and voice data emission antenna, and the voice data that voice data emission device will be handled is mixed down a radiofrequency signal and launches this radiofrequency signal by this voice data emission antenna becomes an electromagnetic wave; And
The combination of one wireless speaker, comprise a plurality of wireless speakers, each this wireless speaker comprises a voice data reception antenna, one voice data receiver, with a loud speaker, wherein this voice data reception antenna receives this electromagnetic wave, and this voice data receiver is in order to be reduced into this electromagnetic wave this radiofrequency signal and to produce an analog voice data in order to be sent to this loud speaker.
2. the sound system of use wireless speaker as claimed in claim 1 is characterized in that, the voice data of this processing is a digital signal.
3. the sound system of use wireless speaker as claimed in claim 2 is characterized in that, this digital signal is utilized the digital modulation of a quaternary phase shift key (QPSK), produces this radiofrequency signal.
4. the sound system of use wireless speaker as claimed in claim 1 is characterized in that, this voice data emission device comprises:
One local oscillator is in order to produce a harmonic signal;
One or nine ten degree phase shifters are in order to spend this harmonic signal phase shift 90;
One first frequency mixer is in order to mixing one first fundamental frequency signal and this harmonic signal;
One second frequency mixer is in order to the harmonic signal of mixing one second fundamental frequency signal and this phase shift 90 degree;
One adder is in order to the output addition with this first frequency mixer and this second frequency mixer; And
One power amplifier is in order to amplify the output of this adder.
5. the sound system of use wireless speaker as claimed in claim 1 is characterized in that, this voice data receiver comprises:
One low-frequency noise amplifier will be in order to being amplified by this voice data emission this radiofrequency signal that antenna received;
One local oscillator is in order to produce a harmonic signal;
One or nine ten degree phase shifters are in order to spend this harmonic signal phase shift 90;
One first frequency mixer is in order to this radiofrequency signal of mixing and this harmonic signal; And
One second frequency mixer is in order to the harmonic signal of this radiofrequency signal of mixing and this phase shift 90 degree.
6. a sound system that uses wireless speaker is characterized in that, comprising:
One main frame produces a voice data;
One enlarger in order to receiving this voice data, and is done signal processing action and then is produced an electromagnetic wave that is loaded with this voice data this voice data; And
The combination of one wireless speaker, comprise a plurality of wireless speakers, each this wireless speaker comprises a voice data reception antenna, one voice data receiver, with a loud speaker, wherein this voice data reception antenna receives this electromagnetic wave, and this voice data receiver produces an analog voice data in order to this voice data reduction that this electromagnetic wave is contained and is sent to this loud speaker, and then promotes this loud speaker sounding.
7. the sound system of use wireless speaker as claimed in claim 6, it is characterized in that, this enlarger comprises voice data emission device and voice data emission antenna, and this voice data emission device is mixed down this voice data one radiofrequency signal and launches this radiofrequency signal by this voice data emission antenna becomes the electromagnetic wave that this is loaded with this voice data.
8. the sound system of use wireless speaker as claimed in claim 7 is characterized in that, this voice data emission device comprises:
One local oscillator is in order to produce a harmonic signal;
One or nine ten degree phase shifters are in order to spend this harmonic signal phase shift 90;
One first frequency mixer is in order to mixing one first fundamental frequency signal and this harmonic signal;
One second frequency mixer is in order to the harmonic signal of mixing one second fundamental frequency signal and this phase shift 90 degree;
One adder is in order to the output addition with this first frequency mixer and this second frequency mixer; And
One power amplifier is in order to amplify the output of this adder.
9. the sound system of use wireless speaker as claimed in claim 6 is characterized in that, this voice data receiver comprises:
One low-frequency noise amplifier will be in order to being amplified by this voice data emission this radiofrequency signal that antenna received;
One local oscillator is in order to produce a harmonic signal;
One or nine ten degree phase shifters are in order to spend this harmonic signal phase shift 90;
One first frequency mixer is in order to this radiofrequency signal of mixing and this harmonic signal; And
One second frequency mixer is in order to the harmonic signal of this radiofrequency signal of mixing and this phase shift 90 degree.
10. the sound system of use wireless speaker as claimed in claim 6 is characterized in that, this main frame comprise at least a broadcast receiver and a player one of them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02140507 CN1392750A (en) | 2002-07-05 | 2002-07-05 | Acoustic system with radio loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02140507 CN1392750A (en) | 2002-07-05 | 2002-07-05 | Acoustic system with radio loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1392750A true CN1392750A (en) | 2003-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02140507 Pending CN1392750A (en) | 2002-07-05 | 2002-07-05 | Acoustic system with radio loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1392750A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361500A (en) * | 2011-08-19 | 2012-02-22 | 上海华勤通讯技术有限公司 | Paste-type wireless speaker |
| CN102484459A (en) * | 2009-08-20 | 2012-05-30 | 金瑞庚 | Multi-amplifier Audio Module For A Multichannel Speaker, And Multi-amplifier Audio Module Housing Assembly For Same |
| CN102760481A (en) * | 2011-11-30 | 2012-10-31 | 三峡大学 | Wireless mp3 digital music playing device |
-
2002
- 2002-07-05 CN CN 02140507 patent/CN1392750A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102484459A (en) * | 2009-08-20 | 2012-05-30 | 金瑞庚 | Multi-amplifier Audio Module For A Multichannel Speaker, And Multi-amplifier Audio Module Housing Assembly For Same |
| CN102361500A (en) * | 2011-08-19 | 2012-02-22 | 上海华勤通讯技术有限公司 | Paste-type wireless speaker |
| CN102760481A (en) * | 2011-11-30 | 2012-10-31 | 三峡大学 | Wireless mp3 digital music playing device |
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