CN1305272A - Wireless sound system - Google Patents
Wireless sound system Download PDFInfo
- Publication number
- CN1305272A CN1305272A CN01107232.6A CN01107232A CN1305272A CN 1305272 A CN1305272 A CN 1305272A CN 01107232 A CN01107232 A CN 01107232A CN 1305272 A CN1305272 A CN 1305272A
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- CN
- China
- Prior art keywords
- sound
- wireless
- signal
- circuit
- power amplifier
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 230000005236 sound signal Effects 0.000 abstract description 6
- 230000003321 amplification Effects 0.000 abstract description 3
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract 2
- 238000009434 installation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Circuit For Audible Band Transducer (AREA)
- Transmitters (AREA)
Abstract
A wireless sound system is composed of a front-end processor and several wireless sound boxes, each for one channel. A defined channel of sound source signals is decoded by the front-end processor, which then processes the sound effects. The process audio signals are modulated, amplified and emitted out by radio emitter and antenna. The RF signals are received by circuit in the sound boxes, where they are demodulated to obtain needed audio signal. After power amplification, the loudspeaker is driven.
Description
The present invention relates to a kind of wireless sound system.
Current, sound system all is by power amplifier power output audio signal, by the audio amplifier line signal is delivered to audio amplifier.Along with popularizing of multichannel sound effect treatment system, it is many and complicated that the line between power amplifier and the audio amplifier becomes, and makes troubles for installation and debugging.Simultaneously, influence the attractive in appearance of the reliability of system and layout.Such as, when home theater is installed, if do not lay concealed wire in advance, the installation of audio amplifier line will be very difficult, simultaneously, can influence the attractive in appearance of room inevitably, the occasion that often will move in the audio amplifier position, and complicated audio amplifier line more seems very inconvenient.
At the audio amplifier routing problem that present sound system exists, the objective of the invention is to adopt the wired connection mode between wireless mode replacement power amplifier and the audio amplifier, design a kind of wireless sound system.
Wireless sound system of the present invention, it is characterized in that forming by a preprocessor and wireless sound box, front-end processor is by selecting circuit, the sound effect treatment circuit, radio transmitter constitutes, wireless sound box is by reception antenna, wireless receiving circuit, audio frequency power amplifier electric wire and loudspeaker constitute, select circuit input end to link to each other with a plurality of sources of sound, its signal output part links to each other with sound effect treatment circuit input, sound effect treatment circuit signal output part is fed to radio transmitter through a plurality of passages, be emitted to the space through antenna, the wireless receiving circuit input of wireless sound box links to each other with reception antenna, output links to each other with audio frequency power amplifier, power amplifier output termination loudspeaker.
The operation principle of native system is: wireless sound system is made up of a front-end processor and several wireless sound boxes, the corresponding sound channel of each wireless sound box.Front-end processor is decoded to one road sound source signal of appointment and various sound effect is handled, and the audio signal after the processing delivers to that wireless launcher is modulated and radio frequency amplifies, after antenna launch.The radio frequency signal that wireless sound box receiving front-end processor sends, demodulation are exported the required audio signal of this sound channel, and power amplifier carries out power amplification to audio signal, promote sound horn.
System of the present invention adopts the wired connection mode between alternative power amplifier of wireless mode and the audio amplifier, not only make the sound system layout succinctly attractive in appearance, and greatly simplify the Installation and Debugging of sound system, and believe that in a single day product of the present invention put on market, will be subjected to extremely warm welcome of consumer surely.
Fig. 1 is a schematic block diagram of the present invention.
Select module, sound effect processing module, wireless transmitter module and transmitting antenna to constitute front-end processor, select to select one the tunnel in the multiple sound source signal (as VCD, DVD, CD etc.) of module with source of sound 1～n, as the processing signals of back level.This selection module can adopt electronic switch and relay to make.The sound effect processing module is carried out various processing to selecting module output signal, the signal of K sound channel of output, and this signal can be the analog or digital signal, is fed to wireless transmitter module then.The sound effect processing module can be selected M62464 for use, or CS4926 etc.Wireless transmitter module is modulated the output signal of sound effect processor, and through frequency conversion and the radiofrequency signal of amplifying the certain power of output.The wireless transmission modulation system can be a variety of, when being the multichannel analog signal as signal, can adopt AM or FM modulation, and frequency division multiplexing carries out multi-channel analog signal and transmits; When input signal is digital signal, can adopt modulation systems such as FSK, MSK, QAM.Transmitting antenna radiate the output radiofrequency signal of wireless transmitter module with form of electromagnetic wave, receive a day level and convert the radiofrequency signal that receives to the signal of telecommunication, exports to wireless receiving module.This module is demodulated into baseband signal with the radiofrequency signal of wireless receiving, selects and export the signal of specifying sound channel then.Audio frequency power amplifier module is carried out power amplification to the baseband signal of wireless receiving module output, and the power output signal promotes sound horn.
Claims (1)
1. wireless sound system, it is characterized in that forming by a preprocessor and wireless sound box, front-end processor is by selecting circuit, the sound effect treatment circuit, radio transmitter constitutes, wireless sound box is by reception antenna, wireless receiving circuit, audio power amplifier circuit and loudspeaker constitute, select circuit input end to link to each other with a plurality of sources of sound, its signal output part links to each other with sound effect treatment circuit input, sound effect treatment circuit signal output part is fed to radio transmitter through a plurality of passages, be emitted to the space through antenna, the wireless receiving circuit input of wireless sound box links to each other with reception antenna, and output links to each other with audio frequency power amplifier, power amplifier output termination loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01107232.6A CN1305272A (en) | 2001-03-02 | 2001-03-02 | Wireless sound system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01107232.6A CN1305272A (en) | 2001-03-02 | 2001-03-02 | Wireless sound system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1305272A true CN1305272A (en) | 2001-07-25 |
Family
ID=4656179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01107232.6A Pending CN1305272A (en) | 2001-03-02 | 2001-03-02 | Wireless sound system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1305272A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007003074A1 (en) * | 2005-07-01 | 2007-01-11 | Shuzhe Fang | A wireless outdoor sound equipment |
| WO2007045119A1 (en) * | 2005-10-17 | 2007-04-26 | Zhaohui Lin | A solar power wireless acoustics system |
| CN100403256C (en) * | 2005-12-20 | 2008-07-16 | 神基科技股份有限公司 | Sound effect system and radio sound source output device |
| CN100477749C (en) * | 2005-05-24 | 2009-04-08 | 深圳创维－Rgb电子有限公司 | Multiple to multiple radio transmission device |
| CN1676374B (en) * | 2004-03-31 | 2011-12-07 | 深圳市朗科科技股份有限公司 | On-board audio-visual system |
| US8126182B2 (en) | 2007-01-19 | 2012-02-28 | Getac Technology Corporation | Sound effect system and wireless audio output device |
| CN103929687A (en) * | 2014-04-04 | 2014-07-16 | 生迪光电科技股份有限公司 | LED lighting devices, wireless loudspeaker system and wireless audio playing method |
-
2001
- 2001-03-02 CN CN01107232.6A patent/CN1305272A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1676374B (en) * | 2004-03-31 | 2011-12-07 | 深圳市朗科科技股份有限公司 | On-board audio-visual system |
| CN100477749C (en) * | 2005-05-24 | 2009-04-08 | 深圳创维－Rgb电子有限公司 | Multiple to multiple radio transmission device |
| WO2007003074A1 (en) * | 2005-07-01 | 2007-01-11 | Shuzhe Fang | A wireless outdoor sound equipment |
| WO2007045119A1 (en) * | 2005-10-17 | 2007-04-26 | Zhaohui Lin | A solar power wireless acoustics system |
| CN100403256C (en) * | 2005-12-20 | 2008-07-16 | 神基科技股份有限公司 | Sound effect system and radio sound source output device |
| US8126182B2 (en) | 2007-01-19 | 2012-02-28 | Getac Technology Corporation | Sound effect system and wireless audio output device |
| CN103929687A (en) * | 2014-04-04 | 2014-07-16 | 生迪光电科技股份有限公司 | LED lighting devices, wireless loudspeaker system and wireless audio playing method |
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Legal Events
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| REG | Reference to a national code |
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