CN2266851Y - Wired and multiplex wireless microphone expanding device for audio-video compact disk machine - Google Patents
Wired and multiplex wireless microphone expanding device for audio-video compact disk machine Download PDFInfo
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- CN2266851Y CN2266851Y CN 95222103 CN95222103U CN2266851Y CN 2266851 Y CN2266851 Y CN 2266851Y CN 95222103 CN95222103 CN 95222103 CN 95222103 U CN95222103 U CN 95222103U CN 2266851 Y CN2266851 Y CN 2266851Y
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- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000003584 silencer Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 230000003321 amplification Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model relates to a wired and multiplex wireless microphone expanding device for an audio-video compact disk machine (VIDEOCD or CD-I), which comprises a wired microphone input end, a preamplifier, a microphone magnifying and volume controller, a microphone voice detector, a digital echo controller, a digital echo knob, a microphone silencer, an audio mixer, a sound processor, a first frequency modulation reception circuit, and a second frequency modulation reception circuit. The signals delivered by the wireless microphone can be added into the microphone preamplifier by utilizing the frequency modulation reception circuits, when outputted, a part of the signals are taken out to be added in the digital echo controller, and the signals are mixed with the original microphone signals, and therefore, range constraint can be overcome, and the functions of silence, continuing sing by computer, etc. can be possessed.
Description
The utility model relates to wired and many wireless microphone expanding devices of a kind of video CD players (VIDEO CD or CD-I), utilize the FM reception circuit, the signal that wireless microphone is transmitted adds the preamplifier of microphone, output is then taken out a part and is added digital echo controller processing, mix with former microphone signal again, make singing sound loud and clear to reach, and the Karaoke effect of surround sound is arranged.
Quality of the life improves constantly now, people constantly attempt various stress-relieving activities, and like most now no more than going KTV to lustily sing a song, to alleviate physical and psychological pressure, but existing KTV consumption is too high, non-common people afford to consume, just some consumer is for saving money, save time and buy Karaoke Video Recorder (VCR or VCP) or karaoke audiovisual CD-ROM device (VIDEOCD or CD-I) and use, and when using the karaoke audiovisual CD-ROM device, main one or two of the wire microphone that uses often twines because of wire rod in use and the relation of wire rod length makes distance restricted.
Main purpose of the present utility model, be to solve the shortcoming of above-mentioned karaoke audiovisual CD-ROM device (VIDEO CD or CD-I), utilize the FM reception circuit, the signal that wireless microphone is transmitted is treated as the signal identical with wire microphone, and karaoke audiovisual CD-ROM device (VIDEO CD or CD-I) is in the past twined because of wire rod and the relation of wire rod length makes the restricted problem of distance so that solve.
Another purpose of the present utility model, be to utilize the frequency modulated carrier of FM reception circuit with the wireless microphone emission, be demodulated to voice output, and for fear of phase mutual interference and station interference between each wireless receiving circuit, especially with the frequency setting of wireless microphone outside FM radio station frequency range 88MHZ～108MHZ, its setpoint frequency is 108.5MHZ～120MHZ, and emissive porwer is limited to below the 100dbuv, disturbs and the mutual interference of minimizing itself to reduce other people equipment produced.
A purpose more of the present utility model, be this wireless microphone number, demodulator circuit group number and microphone volume adjustment number, can be expanded on demand, to enlarge the Karaoke service efficiency, and overcome wire microphone because of wire rod winding and length relation make distance restricted, make the user sing merrily heartily.
The utility model is wired and many wireless microphone expanding devices of a kind of video CD players (VIDEO CD or CD-I), it includes: the wire microphone input, and preamplifier, microphone amplifies and volume controller, the microphone voice detector, numeral echo controller, digital echo knob, mic mute device, mixer, Sound Processor Unit, the first FM reception circuit and the second FM reception circuit, wherein:
Described wire microphone input links to each other with the input of described preamplifier, described preamplifier output amplifies with described microphone and the volume controller input links to each other, described microphone amplifies and the output of volume controller links to each other with the input of described microphone voice detector and digital echo controller respectively, the output of described digital echo controller links to each other with described digital echo knob, described digital echo knob output links to each other with the input of described mic mute device and described mixer, described microphone voice detector output end links to each other with the input of described Sound Processor Unit and described mic mute device respectively, and described Sound Processor Unit output links to each other with the input of described mixer.
The signal that comes from wireless microphone is received by the described first FM reception circuit and the second FM reception circuit, and the described first FM reception circuit and the second FM reception circuit output end link to each other with the input of described preamplifier respectively.
The purpose of this utility model, structure, technological means and effect thereof can be obtained further to understand by the detailed description of following conjunction with figs. to embodiment.
Brief Description Of Drawings:
Fig. 1 is a circuit box schematic diagram of the present utility model.
Fig. 2 A and Fig. 2 B are circuit diagram of the present utility model (one).
Fig. 3 is circuit diagram of the present utility model (two).
Fig. 4 is circuit diagram of the present utility model (three).
Fig. 5 is circuit diagram of the present utility model (four).
Fig. 6 is circuit diagram of the present utility model (five).
Fig. 7 is circuit diagram of the present utility model (six).
Fig. 1～Fig. 7 is circuit box of the present utility model and circuit diagram.As shown in the figure: wired and many wireless microphone expanding devices of video CD players of the present utility model (VIDEO CD or CD-I), it mainly was two most compositions, at first be connected to the input of preamplifier 20 by wire microphone input 10, be connected to the input of microphone amplification and volume controller 30 again by the output of preamplifier 20, be connected to the input of microphone voice detector 40 and digital echo controller 50 respectively with the output of microphone amplification and volume controller 30, output with digital echo controller 50 connects a digital echo knob 51 again, be connected to the input of mic mute device 52 and mixer 60 again by digital echo knob 51 outputs, be connected to the input of Sound Processor Unit 70 and mic mute device 52 in addition with microphone voice detector 40 outputs respectively, be connected to the input of mixer 60 again with Sound Processor Unit 70 outputs.A part of in addition, the signal that is transmitted by wireless microphone is connected to the input of preamplifier 20 respectively through the output of the first FM reception circuit 80 and the second FM reception circuit 90, and the aforementioned flow process that continues is to constitute wired and many wireless microphone extension circuits of video CD players (VIDEO CD or CD-I).
As Fig. 5, shown in Figure 6, when wireless microphone is launched frequency, after this frequency is received by the first FM reception circuit 80 or the second FM reception circuit 90, by the local oscillator 85 in this first FM reception circuit 80 or the second FM reception circuit 90,95 (LocalOscillator) and frequency mixer 86,96 take out an intermediate-freuqncy signal, amplify 87 via intermediate frequency again, 97 and demodulation circuit 88,98, to take out a wireless microphone voice signal, the coupling gain 89 again, 99 (Fig. 2) back is by 10 inputs of wire microphone input, amplify via wired preamplifier 20, amplify and volume controller 30 processing via microphone, deliver in digital echo controller 50 and the microphone voice detector 40, be sent in mixer 60 and the Sound Processor Unit 70 by digital echo controller 50 and microphone voice detector 40 again, promptly have the Karaoke effect to occur.
As Fig. 5, shown in Figure 6, the quiet processing of the first FM reception circuit 80 and the second FM reception circuit 90, utilize intermediate frequency to amplify 87, the detection current potential output 81 of 97 demodulation, 91, when a little less than the received signal to certain below the degree, detection current potential output 81 then, 91 voltage descends, make the first transistor 82,92 end, inverter 83,93 conductings, collector electrode is exported a high level and is made transistor seconds 84,94 conductings, noise is removed, with after reaching client wireless microphone being turned off, the effect of its first FM reception circuit 80 and the second FM reception circuit, 90 automatic mutes is in order to avoid hear noisy noise.
As shown in Figure 7, computer connects to sing handles 101, when microphone voice input preamplifier 20 amplifies, amplify via microphone again and volume controller 30 processing, deliver to microphone voice detector 40, microphone voice detector 40 will be exported a high level to microprocessor 102 guide sound audio processor 70 again, when stereophonic effect, the output source of sound of its L channel and R channel will be L channel=left side, R channel=left side, i.e. two sound channel outputs are left source of sound, to reach the former sound of singing that singing sound replaces laser disc, connect the effect of singing automatically and have.
The utility model can carry out mic mute to be handled, as shown in Figure 1, when wired or the equal voiceless sound of wireless microphone are imported, detect low level of back output via microphone voice detector 40, control mic mute device 52 again, the small noise that digital echo controller 50 is produced also can eliminate, to reach the signal output of high s/n ratio.
Moreover, above-mentioned wireless microphone number, demodulator circuit group number and microphone volume are adjusted number, can be expanded according to performance requirement, to enlarge the Karaoke service efficiency, and not twined by wire microphone and length relation makes distance restricted, make the user sing merrily heartily because of wire rod.
The above only is a preferable possible embodiments of the present utility model, is not to limit claim of the present utility model with this, so the equivalent structure that all utilization the utility model specifications and accompanying drawing content are done changes, all is contained in the scope of the present utility model.
Claims (6)
1, wired and many wireless microphone expanding devices of a kind of video CD players (VIDEO CD or CD-I), it is characterized in that including: the wire microphone input, preamplifier, microphone amplifies and volume controller, the microphone voice detector, numeral echo controller, digital echo knob, mic mute device, mixer, Sound Processor Unit, the first FM reception circuit and the second FM reception circuit, wherein:
Described wire microphone input links to each other with the input of described preamplifier, described preamplifier output amplifies with described microphone and the volume controller input links to each other, described microphone amplifies and the output of volume controller links to each other with the input of described microphone voice detector and digital echo controller respectively, the output of described digital echo controller links to each other with described digital echo knob, described digital echo knob output links to each other with the input of described mic mute device and described mixer, described microphone voice detector output end links to each other with the input of described Sound Processor Unit and described mic mute device respectively, and described Sound Processor Unit output links to each other with the input of described mixer.
The signal that comes from wireless microphone is received by the described first FM reception circuit and the second FM reception circuit, and the described first FM reception circuit and the second FM reception circuit output end link to each other with the input of described preamplifier respectively.
2, wired and many wireless microphone expanding devices of video CD players as claimed in claim 1, it is characterized in that, the described first FM reception circuit or the second FM reception circuit receive the signal that wireless microphone transmits, the intermediate-freuqncy signal of its mixer output is connected to intermediate frequency and amplifies and demodulation circuit, the output of described demodulation circuit is the voice signal of wireless microphone, described voice signal is connected to the input of coupling gain circuitry, and the output of described coupling gain circuitry links to each other with described wire microphone input.
3, wired and many wireless microphone expanding devices of video CD players as claimed in claim 1, it is characterized in that, when a little less than the received signal to certain degree when following, the voltage of the described detection current potential output of described first FM reception circuit and the described second FM reception circuit descends, the first transistor is carried to be ended, inverter conducting, collector electrode are exported a high level and are made the transistor seconds conducting, and noise is removed.
4, wired and many wireless microphone expanding devices of video CD players as claimed in claim 1, it is characterized in that, after microphone voice input preamplifier amplifies, the output of described microphone voice detector is a high level, this high level is connected to microprocessor, guide sound audio processor again, when stereophonic effect, two sound channels outputs are left source of sound.
5, wired and many wireless microphone expanding devices of video CD players as claimed in claim 1, it is characterized in that, when wired or the equal voiceless sound of wireless microphone are imported, described microphone voice detector output end is a low level, this low level is connected to described mic mute device, eliminates the small noise that described digital echo controller is produced.
6, wired and many wireless microphone expanding devices of video CD players as claimed in claim 1 is characterized in that, wireless microphone number, demodulator circuit group number and microphone volume are adjusted number, can be expanded according to performance requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95222103 CN2266851Y (en) | 1995-09-05 | 1995-09-05 | Wired and multiplex wireless microphone expanding device for audio-video compact disk machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95222103 CN2266851Y (en) | 1995-09-05 | 1995-09-05 | Wired and multiplex wireless microphone expanding device for audio-video compact disk machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2266851Y true CN2266851Y (en) | 1997-11-05 |
Family
ID=33869532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95222103 Expired - Fee Related CN2266851Y (en) | 1995-09-05 | 1995-09-05 | Wired and multiplex wireless microphone expanding device for audio-video compact disk machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2266851Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103813237A (en) * | 2014-02-18 | 2014-05-21 | 厦门亿联网络技术股份有限公司 | Extensible pick-up with mute function and implementing method thereof |
| CN105244012A (en) * | 2015-09-29 | 2016-01-13 | 明基电通有限公司 | Digital audio-video equipment |
-
1995
- 1995-09-05 CN CN 95222103 patent/CN2266851Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103813237A (en) * | 2014-02-18 | 2014-05-21 | 厦门亿联网络技术股份有限公司 | Extensible pick-up with mute function and implementing method thereof |
| CN103813237B (en) * | 2014-02-18 | 2017-05-03 | 厦门亿联网络技术股份有限公司 | Extensible pick-up with mute function and implementing method thereof |
| CN105244012A (en) * | 2015-09-29 | 2016-01-13 | 明基电通有限公司 | Digital audio-video equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |