CN201118574Y - Wireless digital transmitter - Google Patents
Wireless digital transmitter Download PDFInfo
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- CN201118574Y CN201118574Y CNU2007201958653U CN200720195865U CN201118574Y CN 201118574 Y CN201118574 Y CN 201118574Y CN U2007201958653 U CNU2007201958653 U CN U2007201958653U CN 200720195865 U CN200720195865 U CN 200720195865U CN 201118574 Y CN201118574 Y CN 201118574Y
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- digital
- acceptance division
- voice
- analog
- collecting portion
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Abstract
Disclosed is a wireless digital microphone, which is used for transmitting audio signals from a sound source to a computer and comprises a voice collecting part and a voice receiving part. The voice collecting part includes a sound sensor, an analog-digital converter, an encoder, a first RF circuit which are in sequential connection; and a first processor used for controlling the analog-digital converter, the encoder and the first RF circuit. The voice collecting part is used for collecting voices from the sound source and transmitting wireless digital signals containing the voices to the voice receiving part. The voice receiving part includes a second RF circuit, a decoder, and a digital-analog converter which are in sequential connection; a digital interface drive circuit connected with the decoder; and a second processor used for controlling the second RF circuit ,the decoder, the digital-analog converter and the digital interface drive circuit. The voice receiving part is used for receiving the wireless digital signals from the voice collecting part, processing and inputting the wireless digital signals to the computer.
Description
Technical field
The present invention relates to a kind of wireless speech signal transmitting apparatus, relate in particular to a kind of wireless digital microphone.
Background technology
Under performance such as arenas, classroom, speech occasion, often needing to gather performing artist or speaker's sound and transmit it to sound source by the voice collecting portion of microphone has the voice acceptance division of this microphone of certain distance to carry out processing such as follow-up amplification, storage.Existing microphone mainly is divided into two big classes: cable microphone and wireless microphone.Wherein wireless microphone transmits by voice signal is modulated to radio signal, and the people who sounds can be comparatively freely movable near the certain limit the wireless microphone acceptance division in sounding, thereby wireless microphone is popular.
The wireless microphone that generally uses adopts analog signal transmission sound at present.In the process of analog signal transmission, can be subjected to the influence of electromagnetic interference in the environment unavoidably, and adopt the poor anti jamming capability of analog signal transmission, generally be difficult to remove these ideally again at its acceptance division disturb, thereby often have much noise in the signal that finally obtains and cause distorted signals.
On the other hand, the common volume of acceptance division in the wireless microphone is bigger at present, and operation is complicated, often needs special personnel to operate.When needs carry out stored digital to sound and handle, also must use other dedicated convert equipment usually.
Summary of the invention
The invention provides a kind of transmission of sound signals quality height, the installation of acceptance division and wireless microphone simple and easy to use.
The invention provides a kind of wireless digital microphone, be used for audio signal is transported to computer from imparts acoustic energy, it comprises voice collecting portion and voice acceptance division.Described voice collecting portion comprises sound transducer, analog-digital converter, encoder and first radio circuit that links to each other in turn, and the first processor that is used to control described analog-digital converter, encoder and first radio circuit.This voice collecting portion is used for gathering voice and comprising the wireless digital signal of these voice to described voice acceptance division emission from sound source.Described voice acceptance division comprises second radio circuit, decoder and the digital analog converter that links to each other in turn, the one digital interface drive circuit that links to each other with described decoder, and second processor that is used to control described second radio circuit, decoder, digital analog converter and digital interface drive circuit.This voice acceptance division is used to receive from the wireless digital signal of described voice collecting portion and with it handles back input computer.Wherein, described voice receiving portion further comprises USB (universal serial bus), is used for USB (universal serial bus) port to computer and sends digital signal from described digital interface drive circuit.Described computer is powered to described voice receiving portion by described USB (universal serial bus).Described voice receiving portion further comprises the circuit output interface, is used for sending analog signal from described digital analog converter here to the line input oral instructions of computer.Described voice collecting portion comprises that further first frequency reconciles device, is used to be provided with the frequency of described voice collecting portion emission wireless digital signal.Described voice collecting portion comprises that further second frequency reconciles device, is used to be provided with the frequency that described voice receiving portion is accepted wireless digital signal.Described voice collecting portion further comprises first volume adjustment device and the first pitch adjusting device, is respectively applied for to regulate described voice collecting portion volume and pitch to the represented sound of the wireless digital signal of described voice receiving portion emission after gathering sound.Described voice receiving portion further comprises second volume adjustment device and the second pitch adjusting device, is respectively applied for to regulate volume and the pitch that described voice receiving portion is transferred to the voice signal of computer.
The invention provides a kind of wireless digital microphone, be used for audio signal is transported to computer from imparts acoustic energy, it comprises voice collecting portion and voice acceptance division, it is characterized in that:
Described voice collecting portion comprises sound transducer, analog-digital converter, encoder and first radio circuit that links to each other in turn, and the first processor that is used to control described analog-digital converter, encoder and first radio circuit, this voice collecting portion is used for gathering voice and comprising the wireless digital signal of these voice to described voice acceptance division emission from sound source
Described voice acceptance division comprises second radio circuit, decoder and the digital analog converter that links to each other in turn, and second processor that is used to control described second radio circuit, decoder and digital analog converter, this voice acceptance division is used to receive from the wireless digital signal of described voice collecting portion and with it handles the form input computer of back with analog signal.
The invention provides a kind of wireless digital microphone, be used for audio signal is transported to computer from imparts acoustic energy, it comprises voice collecting portion and voice acceptance division, it is characterized in that:
Described voice collecting portion comprises sound transducer, analog-digital converter, encoder and first radio circuit that links to each other in turn, and the first processor that is used to control described analog-digital converter, encoder and first radio circuit, this voice collecting portion is used for gathering voice and comprising the wireless digital signal of these voice to described voice acceptance division emission from sound source
Described voice acceptance division comprises second radio circuit, decoder and the digital interface drive circuit that links to each other in turn, and second processor that is used to control described second radio circuit, decoder and digital interface drive circuit, this voice acceptance division is used to receive from the wireless digital signal of described voice collecting portion and with it handles the form input computer of back with digital signal.
With respect to prior art, the form of described wireless digital microphone by wireless digital signal with voice messaging from the transmission of described voice collecting portion to described voice acceptance division, improved the fidelity that voice signal transmits.Simultaneously, computer simulation port (as the line input mouth) and digital port (as USB port) by the standard of being used, described voice acceptance division can be imported voice signal in computer and by computer this signal be carried out follow-up processing, its installation and use are comparatively convenient and simple, and because computer is universal, the convenience of this wireless digital microphone and flexibility have also obtained further embodiment.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
The structural representation of the wireless digital microphone that Fig. 1 provides for the embodiment of the invention.
Fig. 2 is the user interface schematic diagram of the voice collecting portion of wireless digital microphone shown in Figure 1.
Fig. 3 is the user interface schematic diagram of the voice acceptance division of wireless digital microphone shown in Figure 1.
Embodiment
Below in conjunction with accompanying drawing wireless digital microphone provided by the invention is described in further detail.
See also Fig. 1, a kind of wireless digital microphone 100 that the embodiment of the invention provides is used for audio signal is transferred to computer 120 from sound source 105, and it comprises voice collecting portion 101 and voice acceptance division 103.Described voice collecting portion 101 comprises sound transducer 102, analog-digital converter 104, encoder 106 and first radio circuit 108 that links to each other in turn, and the first processor 110 that is used to control described analog-digital converter 104, encoder 106 and first radio circuit 108.This voice collecting portion 101 is used for gathering voice and launching the wireless digital signal that comprises these voice to described voice acceptance division 103 from sound source 105.Described voice acceptance division 103 comprises second radio circuit 112, decoder 114 and the digital analog converter 116 that links to each other in turn, the one digital interface drive circuit 117 that links to each other with described decoder 114, and second processor 118 that is used to control described second radio circuit 112, decoder 114, digital analog converter 116 and digital interface drive circuit 117.This voice acceptance division 103 is used to receive from the wireless digital signal of described voice collecting portion 101 and with it handles back input computer 120.
See also Fig. 2, described voice collecting portion 101 is the device that can be worn with oneself by the user.Described sound transducer 102 links to each other by disassembled cable with the remainder of described voice collecting portion 101.Preferably, be provided with jack 201 on described voice collecting portion 101 surfaces, described sound transducer 102 can link to each other with described voice collecting portion 101 remainders by this jack 201.In use, the user can place sound transducer 102 position of easy reception sound, such as not on coat, and place spectators to be difficult for the position of seeing or not affecting the appearance the remainder of described voice collecting portion 101, such as being placed in the coat pocket or hanging on one's waist.The overall volume of described voice collecting portion 101 is less, generally roughly similar with the common cigarette box, thereby it is easy to carry about with one, and can not limit the freedom of action of user when transmission sound within the specific limits.
As shown in Figure 1, described analog-digital converter 104 links to each other with described sound transducer 102, and the analog signal conversion that comprises acoustic information that is used for sound transducer 102 outputs is a digital signal.This digital signal then is admitted to described encoder 106.Described encoder 106 can be by predetermined algorithm with encoding digital signals.In the present embodiment, described coding comprises the operation of compression and packing.Digital signal is carried out encoding operation can reduce redundant information in the signal, improve the efficient of transfer of data, can also encrypt the signal that will transmit where necessary simultaneously.
The data that coding produces are input to described first radio circuit 108 with the form of digital signal.This first radio circuit 108 is modulated to this digital signal on the carrier signal of certain frequency, and by the digital signal after the antenna emission modulation.Preferably, this digital signal frequency is a radiofrequency signal, and is positioned at the frequency range that allows to be used for this type of communication purposes, such as 2.4GHz.
See also Fig. 1, described analog-digital converter 104, encoder 106, and first radio circuit 108 by described first processor 110 controls.Preferably, this first processor 110 is micro controller unit (Micro Controller Unit; MCU).This MCU can programme in advance, carries out pre-set programs in when work, coordinates described analog-digital converter 104, encoder 106, and the work that cooperatively interacts of first radio circuit 108.
Described analog-digital converter 104, encoder 106, first radio circuit 108 and first processor 110 can be respectively the discrete semiconductor chip, and are installed in a printed circuit board (PCB) (PrintedCircuit Board; PCB) on.Perhaps, described analog-digital converter 104, encoder 106, first radio circuit 108 and first processor control 110 all are integrated on the same block semiconductor chip, so help to reduce the overall volume of described voice collecting portion.
See also Fig. 2, the portion of voice collecting described in the present embodiment 101 also comprises the first channel adjustment device, 203, the first volumes conciliation device, 205, the first pitch adjusting devices, 207, the first mains switches 209, a plurality of first light emitting diode lamps 211.The described first channel adjustment device 203 is used to regulate the frequency of described voice collecting portion 101 emission wireless digital signals.Described first volume adjustment device 205 and the first pitch adjusting device 207 are respectively applied for the described voice collecting of adjusting portion 101 volume and pitch to the represented sound of the wireless digital signal of described voice acceptance division 103 emissions after gathering sound.Described first mains switch 209 is used to control the power supply to described voice collecting portion 101.Described a plurality of first light emitting diode lamp 211 is used to indicate the state of described voice collecting portion 101 work.Such as, preferably, when described voice collecting portion 101 electric power startings, one of them light emitting diode lamp is set to light; When described voice collecting portion 101 collected sound, wherein another light emitting diode lamp was set to light; When described voice collecting portion 101 emission wireless digital signals, wherein another light emitting diode lamp is set to light.
Be understandable that in the present embodiment, described voice collecting portion 101 is by the battery (not shown) power supply that is placed in one.Preferably, this battery is a rechargeable battery.
See also Fig. 1, described second radio circuit 112 in the described voice acceptance division 103 is used to receive the wireless digital signal of described first radio circuit 108 emissions and with its demodulation.Signal after this demodulation is further by described decoder 114 decodings.The decoding algorithm of this decoder 114 is corresponding with the encryption algorithm of described encoder, generally comprises the process that unpacks and decompress.Decoded digital signal is reduced to analog signal by described digital analog converter 116.The circuit output interface 302 (referring to Fig. 3) that this analog signal comprises via described voice acceptance division 103 is further inputed to circuit input (Line in) port one 22 of computer 120.This computer 120 and then can do follow-up processing to the simulated audio signal of this input.Described second processor 118 is used to control described second radio circuit 112, decoder 114, reaches digital analog converter 116 and makes their cooperatings.
Above-mentioned digital signal through decoder 114 decoding gained also is admitted to described digital interface drive circuit 117 simultaneously, USB (the Universal Serial Bus that can comprise through described voice acceptance division 103 after this circuit 117 is handled; USB) interface 301 (referring to Fig. 3) is directly imported the USB port 124 of computer 120.
Be understandable that, in the present embodiment, the user can select use to insert using a computer as the transmission result from the analog signal of described digital analog converter 116 of computer 120 circuits input (Line in) port one 22 as required and 120 carry out subsequent treatment, also can select to use using a computer as the transmission result of the USB port that inserts computer 120 120 to carry out subsequent treatment, even use described analog signal and digital signal simultaneously as required from the digital signal of digital interface drive circuit 117.There is not complementary relation in the work that is appreciated that described digital interface drive circuit 117 and described digital analog converter 116 equally.If save described digital interface drive circuit 117 or described digital analog converter 116 separately, then the user can only use analog signal or digital signal to carry out subsequent treatment as the transmission result respectively, but still can reach the effect of transmitting acoustic information at sound source and intercomputer by wireless digital signal.
Described second radio circuit 112, decoder 114, second processor 118, digital analog converter 116, and digital interface drive circuit 117 can be respectively the discrete semiconductor chip, and be installed in a printed circuit board (PCB) (Printed Circuit Board; PCB) on, perhaps, can be integrated on the same block semiconductor chip, so help to reduce the overall volume of described voice acceptance division.
See also Fig. 3, the acceptance division of voice described in the present embodiment 103 also comprises USB interface 301, circuit output interface 302, the second channel adjustment device, 303, the second volumes are reconciled device 305, the second pitch adjusting devices 307, second source switch 309, a plurality of second light emitting diode lamps 311.Described USB interface 301 is used for USB port 124 to computer 120 and sends digital signal from described digital interface drive circuit 117.Described circuit output interface 302 is used for sending the analog signal from described digital analog converter 116 to circuit input (Line in) port one 22 of computer 120.The described second channel adjustment device 303 is used to regulate the frequency that described voice acceptance division 103 receives wireless digital signal.Described second volume adjustment device 305 and the second pitch adjusting device 307 are respectively applied for regulates volume and the pitch that described voice acceptance division 103 is transferred to the voice signal of computer 120.Described second source switch 309 is used to control the power supply to described voice acceptance division 103.Described a plurality of second light emitting diode lamp 311 is used to indicate the state of described voice acceptance division 103 work.Such as, preferably, when described voice acceptance division 103 electric power startings, one of them light emitting diode lamp is set to light; When described voice acceptance division 103 received wireless digital signal, wherein another light emitting diode lamp was set to light; When described voice acceptance division 103 during to computer output analog or digital signal, wherein two light emitting diode lamps are set to respectively light again.
In the present embodiment, preferably, by this second frequency adjusting device 303 signal that described voice acceptance division 103 receives the different frequency that a plurality of voice collecting portion 101 sends in the certain space scope simultaneously can be set, so can realize many-to-one real-time voice Digital Transmission.
Be understandable that, when using described USB interface 301 to connect described voice acceptance division 103 with computer 120, this computer 120 can be by described USB interface 301 to described voice acceptance division 103 power supplies, can in described voice acceptance division 103, battery be set like this, both help simplifying the structure of described voice acceptance division 103, and made things convenient for the user to use again.
In above embodiment, the form of described wireless digital microphone 100 by wireless digital signal with voice messaging from 101 transmission of described voice collecting portion to described voice acceptance division 103, improved the fidelity that voice signal transmits.Simultaneously, computer simulation port (line input mouth 122) and digital port (USB port 124) by the standard of being used, described voice acceptance division 103 can be imported voice signal computer 120 and carry out follow-up processing by 120 pairs of these signals of computer, its installation and use are comparatively convenient and simple, and because computer is universal, the convenience of this wireless digital microphone 100 and flexibility have also obtained further embodiment.
Be understandable that, for the person of ordinary skill of the art, can make other various corresponding changes by technical conceive according to the present invention, and all these change the protection range that all should belong to claim of the present invention.
Claims (10)
1. a wireless digital microphone is used for audio signal is transported to computer from imparts acoustic energy, and it comprises voice collecting portion and voice acceptance division, it is characterized in that:
Described voice collecting portion comprises sound transducer, analog-digital converter, encoder and first radio circuit that links to each other in turn, and the first processor that is used to control described analog-digital converter, encoder and first radio circuit.，
Described voice acceptance division comprises second radio circuit, decoder and the digital analog converter that links to each other in turn, the one digital interface drive circuit that links to each other with described decoder, and second processor that is used to control described second radio circuit, decoder, digital analog converter and digital interface drive circuit.
2. wireless digital microphone as claimed in claim 1 is characterized in that described voice acceptance division further comprises USB (universal serial bus).
3. wireless digital microphone as claimed in claim 2 is characterized in that described computer powers to described voice acceptance division by described USB (universal serial bus).
4. wireless digital microphone as claimed in claim 1 is characterized in that described voice acceptance division further comprises the circuit output interface.
5. wireless digital microphone as claimed in claim 1 is characterized in that described voice collecting portion further comprises the first frequency adjusting device.
6. wireless digital microphone as claimed in claim 1 is characterized in that described voice acceptance division further comprises the second frequency adjusting device.
7. wireless digital microphone as claimed in claim 1 is characterized in that described voice collecting portion further comprises first volume adjustment device and the first pitch adjusting device.
8. wireless digital microphone as claimed in claim 1 is characterized in that described voice acceptance division further comprises second volume adjustment device and the second pitch adjusting device.
9. wireless digital microphone, be used for audio signal is transported to computer from imparts acoustic energy, it comprises voice collecting portion and voice acceptance division, it is characterized in that: described voice collecting portion comprises sound transducer, analog-digital converter, encoder and first radio circuit that links to each other in turn, and the first processor that is used to control described analog-digital converter, encoder and first radio circuit.
Described voice acceptance division comprises second radio circuit, decoder and the digital analog converter that links to each other in turn, and second processor that is used to control described second radio circuit, decoder and digital analog converter.
10. a wireless digital microphone is used for audio signal is transported to computer from imparts acoustic energy, and it comprises voice collecting portion and voice acceptance division, it is characterized in that:
Described voice collecting portion comprises sound transducer, analog-digital converter, encoder and first radio circuit that links to each other in turn, and the first processor that is used to control described analog-digital converter, encoder and first radio circuit.
Described voice acceptance division comprises second radio circuit, decoder and the digital interface drive circuit that links to each other in turn, and second processor that is used to control described second radio circuit, decoder and digital interface drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201958653U CN201118574Y (en) | 2007-10-31 | 2007-10-31 | Wireless digital transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201958653U CN201118574Y (en) | 2007-10-31 | 2007-10-31 | Wireless digital transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201118574Y true CN201118574Y (en) | 2008-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201958653U Expired - Fee Related CN201118574Y (en) | 2007-10-31 | 2007-10-31 | Wireless digital transmitter |
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| Country | Link |
|---|---|
| CN (1) | CN201118574Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102195725A (en) * | 2011-05-03 | 2011-09-21 | 牛刚 | Detection module for radio station |
| CN102711018A (en) * | 2012-06-06 | 2012-10-03 | 国光电器股份有限公司 | Wireless microphone |
-
2007
- 2007-10-31 CN CNU2007201958653U patent/CN201118574Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102195725A (en) * | 2011-05-03 | 2011-09-21 | 牛刚 | Detection module for radio station |
| CN102711018A (en) * | 2012-06-06 | 2012-10-03 | 国光电器股份有限公司 | Wireless microphone |
| CN102711018B (en) * | 2012-06-06 | 2016-05-11 | 国光电器股份有限公司 | A kind of wireless microphone |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080917 Termination date: 20131031 |