CN201733347U - Digital transmitter/receiver - Google Patents
Digital transmitter/receiver Download PDFInfo
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- CN201733347U CN201733347U CN2010202364866U CN201020236486U CN201733347U CN 201733347 U CN201733347 U CN 201733347U CN 2010202364866 U CN2010202364866 U CN 2010202364866U CN 201020236486 U CN201020236486 U CN 201020236486U CN 201733347 U CN201733347 U CN 201733347U
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 33
- 230000003321 amplification Effects 0.000 claims description 14
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 14
- 230000009467 reduction Effects 0.000 claims description 3
- 230000006870 function Effects 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract 1
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 230000006854 communication Effects 0.000 description 16
- 238000004891 communication Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
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- 238000001228 spectrum Methods 0.000 description 1
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Abstract
The utility model relates to a digital transmitter/receiver serving the functions of voice detection and enhancement within various complex backgrounds. The digital transmitter/receiver comprises a transmitter for acoustical-to-electrical conversion, a receiver for electrical-to-acoustical conversion and a voice signal processor for detecting and restoring voice signals, wherein the voice signal processor is respectively connected with the transmitter and the receiver. Accordingly, the digital transmitter/receiver is capable of processing duplex voice on a real-time basis, detecting arriving voice signals and enhancing the voice signals with various background noises.
Description
Technical field
The utility model relates to the voice transmitting-receiving device of radio communication equipment, particularly a kind of draw up digital electrophone of formula communication equipment (as the radio station) performance of Lifting Modules that is applicable to.
Background technology
In outdoor moving speech communication, all kinds of noise jamming is comparatively general, and speech inevitably is subjected to the influence of ambient noise.Usually can be subjected to very strong background noise as the radio station on aircraft, tank, the naval vessel disturbs; the voice signal that receives usually contains the ambient noise that transmit leg is introduced in the communication process; the intelligibility and the definition of speech have been reduced; cause the auditory fatigue of people's ear, have a strong impact on the quality and the effect of voice communication.
Secondly, there are multiple interference such as multipath, decline, time delay in wireless channel, influences effect of voice communication.Mainly undertaken by ionospheric reflection as short wave communication, factors such as day alternates with night, conversion in season make signal distortion and decline occur in communication process, and the speech that causes receiving has bigger noise jamming.
Once more, be subjected to the influence of environments for use such as temperature, humidity, the part characteristic of voice communication device has change in various degree, even also can send background noise when not having the speech transmitting-receiving, there are intrinsic noise even self-excitation noise when causing conversation, influence the messenger's auditory perception.
The utility model content
Exist the bigger shortcoming of all kinds of noise jamming with not enough at existing simulation standard communication equipment, the purpose of this utility model is to provide a kind of digital electrophone, have voice detecting, enhancement function, do not need equipment such as radio station itself are promoted transformation, and only need to replace original electrophone with the utility model, just effective detecting voice signal reduces the influence of background noise.
The purpose of this utility model is achieved through the following technical solutions: a kind of digital electrophone, comprise the transmitter that is used for the acoustic-electric conversion, the voice signal processor that is used for the receiver of electroacoustic conversion and is used for voice signal detecting and reduction, described voice signal processor is connected respectively with transmitter, receiver.
Described voice signal processor comprises audio amplification unit, AD conversion unit, digital processing element, D/A conversion unit, clock unit and memory cell, audio amplification unit, AD conversion unit, digital processing element, D/A conversion unit connect successively, memory cell is connected with digital processing element, clock unit is connected with AD conversion unit, digital processing element, D/A conversion unit respectively, and audio amplification unit also is connected with transmitter, receiver respectively.
Compared with prior art, the utlity model has following advantage and beneficial effect:
1, receiver can effectively reduce the noise in the received speech signal, makes speech have more clear, more comfortable auditory effect, has improved the effect of voice communication and the auditory perception of people's ear.
2, transmitter can effectively reduce the ambient noise that is mingled with in the transmission voice, makes the voice signal of transmission purer, helps promoting voice quality, improves communication efficiency.
3, have the voice detecting function, can when no speech is received and dispatched, keep the mute state of receiver, reduce the messenger's auditory fatigue degree.
4, reduced the upgrade cost of simulated voice communication equipment.The numeral vocoder technology can solve the noise problem of equipment on large program very, but still there are a large amount of simulation standard voice communication devices in China at present, if by installing digital modems additional and digital vocoder improves, cost is higher, and the cycle is longer.Use the utility model not need equipment itself is made any adjustment, only need external electrophone described in the utility model replace original electrophone, effective lifting means Speech Communication quality just, realization is easy, and cost is lower.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is further described, but execution mode of the present utility model is not limited thereto.
Embodiment
The utility model is the digital electrophone with voice detecting, enhancement function, as shown in Figure 1, comprises transmitter, receiver and voice signal processor, and voice signal processor is connected respectively with transmitter, receiver.Wherein:
(1) transmitter receives the voice from the messenger, acoustical signal is converted into the signal of telecommunication, and sends the signal of telecommunication to voice signal processor.
(2) receiver receives the signal of telecommunication from voice signal processor, and the signal of telecommunication is converted into acoustical signal and output.
(3) voice signal processor has the binary channels disposal ability, and passage receives the voice signal from transmitter, and this road signal is carried out exporting to the radio station audio output interface after voice detecting and the enhancement process; Another passage receives the voice signal from the radio station audio input interface, and this road signal is carried out being sent to receiver after the voice detecting enhancement process.Voice signal processor comprises audio amplification unit, AD conversion unit (ADC/DAC), digital processing element, D/A conversion unit (DAC/ADC), clock unit, power subsystem and memory cell, audio amplification unit, AD conversion unit, digital processing element, D/A conversion unit connect successively, memory cell is connected with digital processing element, clock unit is connected with AD conversion unit, digital processing element, D/A conversion unit respectively, and audio amplification unit also is connected with transmitter, receiver respectively.Wherein:
(31) audio amplification unit can be handled two paths of signals simultaneously, improves gain, noise-reduction coefficient.Audio amplification unit receives the voice signal from transmitter on the one hand, and gives AD conversion unit the signal after amplifying; Audio amplification unit receives the voice signal from D/A conversion unit on the other hand, and gives receiver the signal after amplifying.
(32) D/A conversion unit is converted to digital signal and gives the voice signal processing unit receiving the analog signal sample quantization.D/A conversion unit has the two-way disposal ability, and one the tunnel receives the voice signal from audio amplification unit, and one the tunnel receives the voice signal from the radio station audio input interface.
(33) digital processing element is detected, is strengthened audio digital signals, and gives AD conversion unit the voice signal after handling.Digital processing element detects voice signal according to the characteristic of aspects such as voice signal frequency spectrum, energy, judges that the signal that receives is noise or the voice signal that contains noise.To the background noise real-time update, and extract pure voice signal according to the result of voice detectings, the influence of reduction background noise improves the definition and the naturalness of voice.
(34) D/A conversion unit receives the voice signal from digital processing element, and the analog voice signal after will handling is given the audio output interface in audio amplification unit and radio station respectively.
(35) clock unit provides work clock for digital processing element, AD conversion unit and D/A conversion unit.
(36) power subsystem provides each unit required voltage in the voice signal processor.Adopt the direct current supply mode, be input as direct current 15V or direct current 5V, be output as+5V ,-5V or+3.3V.Power module adopts multi-stage filter circuit, reduces the burr of level signal.
(37) memory cell.Memory cell is preserved the working procedure of digital processing element, when powering on program is sent to digital processing element.
Need to prove:
1, according to upper type, the utility model can be used distinct interface instead and directly link to each other with communication equipment, and voice signal processor is of a size of 35mm * 60mm * 25mm, and volume is little, in light weight.
2, the utility model is except that possessing voice detecting and voice enhanced function, and other indexs are all suitable with traditional electrophone, and other indexs comprise frequency response, impedance, sensitivity, maximal input, noise factor etc.
The foregoing description is the utility model preferred implementation; but execution mode of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection range of the present utility model.
Claims (2)
1. digital electrophone, it is characterized in that: comprise the transmitter that is used for the acoustic-electric conversion, the voice signal processor that is used for the receiver of electroacoustic conversion and is used for voice signal detecting and reduction, described voice signal processor is connected respectively with transmitter, receiver.
2. digital electrophone according to claim 1, it is characterized in that: described voice signal processor comprises audio amplification unit, AD conversion unit, digital processing element, D/A conversion unit, clock unit and memory cell, audio amplification unit, AD conversion unit, digital processing element, D/A conversion unit connect successively, memory cell is connected with digital processing element, clock unit is connected with AD conversion unit, digital processing element, D/A conversion unit respectively, and audio amplification unit also is connected with transmitter, receiver respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202364866U CN201733347U (en) | 2010-06-24 | 2010-06-24 | Digital transmitter/receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202364866U CN201733347U (en) | 2010-06-24 | 2010-06-24 | Digital transmitter/receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201733347U true CN201733347U (en) | 2011-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202364866U Expired - Lifetime CN201733347U (en) | 2010-06-24 | 2010-06-24 | Digital transmitter/receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201733347U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110232930A (en) * | 2019-03-20 | 2019-09-13 | 成都天奥信息科技有限公司 | A kind of Real-time voice noise reduction system applied to earth-space communication |
-
2010
- 2010-06-24 CN CN2010202364866U patent/CN201733347U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110232930A (en) * | 2019-03-20 | 2019-09-13 | 成都天奥信息科技有限公司 | A kind of Real-time voice noise reduction system applied to earth-space communication |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110202 |
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| CX01 | Expiry of patent term |