CN110232930A - A kind of Real-time voice noise reduction system applied to earth-space communication - Google Patents
A kind of Real-time voice noise reduction system applied to earth-space communication Download PDFInfo
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- CN110232930A CN110232930A CN201910213860.6A CN201910213860A CN110232930A CN 110232930 A CN110232930 A CN 110232930A CN 201910213860 A CN201910213860 A CN 201910213860A CN 110232930 A CN110232930 A CN 110232930A
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- 238000004891 communication Methods 0.000 title claims abstract description 18
- 238000012545 processing Methods 0.000 claims abstract description 15
- 230000005236 sound signal Effects 0.000 claims abstract description 14
- 238000011946 reduction process Methods 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 6
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- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- G10L21/0202—
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- Noise Elimination (AREA)
Abstract
The invention discloses a kind of Real-time voice noise reduction systems applied to earth-space communication, including power supply, speech input interface, speech output interface, audio A/D/DA and noise reduction processing unit, wherein: the power supply is used to receive the input of external power supply, and is the speech input interface, speech output interface, audio A/D/DA and noise reduction processing unit power supply；The speech input interface is for receiving audio signal；Audio A/D/the DA is used to the audio signal being converted into digital signal, and is sent to noise reduction processing unit；The noise reduction processing unit carries out noise reduction process to the digital signal, and generates noise reduction speech and be sent in audio A/D/DA and be converted into analog signal；The speech output interface is for the analog signal to be output to the outside.
Description
Technical field
The present invention relates to earth-space communication, real-time voice call and its noise reducing apparatus, and in particular to one kind is applied to air-ground logical
The Real-time voice noise reduction system of letter.
Background technique
The speech communication system of AM/FM mode is still followed in existing radio station, easily affected by environment.When meet with bad weather or
When complex electromagnetic environment, radio station output speech signal-to-noise ratio is substantially reduced, and ambient noise improves, speech quality decline.
Summary of the invention
The present invention leads to noise to solve the problems, such as that AM/FM used in existing radio station is highly prone to environment influence,
A kind of Real-time voice noise reduction system applied to earth-space communication is provided, promotes radio station under bad weather and complex electromagnetic environment
Speech signal-to-noise ratio is exported, speech quality is promoted.
The present invention is achieved through the following technical solutions:
A kind of Real-time voice noise reduction system applied to earth-space communication, including the output of power supply, speech input interface, speech connect
Mouth, audio A/D/DA and noise reduction processing unit, in which: the power supply is used to receive the input of external power supply, and is the speech
Input interface, speech output interface, audio A/D/DA and noise reduction processing unit power supply；The speech input interface is for receiving
Audio signal；Audio A/D/the DA is used to the audio signal being converted into digital signal, and is sent to noise reduction processing unit；
The noise reduction processing unit carries out noise reduction process to the digital signal, and generates noise reduction speech and be sent to audio A/D/DA transfer
Change analog signal into；The speech output interface is for the analog signal to be output to the outside.
Audio analog signals, first by audio A/D/DA conversion, are converted to number by digitlization noise reduction process by the design
It is processed again after word signal, noise reduction effect improves a lot, the mode that the prior art that compares directly handles analog signal
For, noise reduction capability is stronger, and it is not high to be delayed, and will not influence normal communication, and communication can effectively be increased by improving noise reduction effect
Efficiency.
A kind of system of the Real-time voice noise reduction system applied to earth-space communication, including radio station, speech noise reducing apparatus, reception
Equipment, in which: the radio station is for carrying out demodulation to the audio signal and generating demodulation speech when receiving audio signal；It is described
Speech noise reducing apparatus is used to carry out demodulation speech noise reduction and generates noise reduction speech, and is analog signal hair by the noise reduction voice conversion
It send to receiving device；The receiving device is for receiving the analog signal.
The system that another kind is applied to the Real-time voice noise reduction system of earth-space communication, including several radio station, switching equipment, words
Sound noise reducing apparatus, receiving device, in which: several radio station are for carrying out the audio signal when receiving audio signal
Demodulation generates respectively corresponding demodulation speech；Several radio station for connecting by the switching equipment with speech noise reducing apparatus；Institute
It states speech noise reducing apparatus and generates noise reduction speech for carrying out noise reduction to demodulation speech, and be analog signal by the noise reduction voice conversion
It is sent to receiving device；The receiving device is for receiving the analog signal.
Further, the reception mode of the receiving device is cable network reception or wireless receiving.
Further, the receiving device includes cable, loudspeaker, earphone.
Further, the speech noise reducing apparatus is arranged in the circuit in the radio station.
Compared with prior art, the present invention having the following advantages and benefits:
A kind of Real-time voice noise reduction system applied to earth-space communication of the present invention reduces noise by increasing noise reducing apparatus
Influence, promote output speech signal-to-noise ratio of the radio station under bad weather and complex electromagnetic environment, promote speech quality.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is principle schematic diagram of the present invention；
The system schematic that Fig. 2 is constituted for the present invention；
Another system schematic that Fig. 3 is constituted for the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment 1
As shown in Figure 1 comprising power supply, speech input/output interface, audio A/D/DA and noise reduction processing unit.Firstly,
It demodulates speech and speech noise reducing apparatus in radio station is sent by speech input/output interface；Then, audio A/D/DA will input speech and turn
It changes digital signal into and send noise reduction processing unit；And then, noise reduction processing unit carries out noise reduction to demodulation speech, and by treated
Speech send audio A/D/DA；Finally, noise reduction voice conversion at analog signal and is passed through speech input/output interface by audio A/D/DA
Output outward.When inputting speech signal-to-noise ratio is 0dB, through radio station speech noise reducing apparatus, treated that noise reduction speech signal-to-noise ratio can mention
5~10dB is risen, and handles delay and is not more than 16 milliseconds.
As shown in Fig. 2, radio station, which will demodulate speech, is sent into radio station in speech noise reducing apparatus by cable, radio station is dropped with speech
Equipment of making an uproar carries out noise reduction to demodulation speech, and is sent out noise reduction speech outward by cable.Radio station can be obviously improved in severe day
Output speech signal-to-noise ratio under gas and complex electromagnetic environment promotes speech quality.
Embodiment 2
As shown in figure 3, the connection type in radio station includes but is not limited to one-to-one connection type, multi-section can also be used
The many-one connection type that radio station is connected with a radio station with speech noise reducing apparatus；By one switching equipment of increase, such as
Audio exchange machine etc. is realized the function of more radio station while noise reduction by switching equipment, can effectively reduce energy consumption, installation is facilitated to set
It sets, the cost of equipment can also be reduced；Noise reduction speech output include but is not limited to cable, loudspeaker, earphone, other it is wired or
Wireless speech transmission mode all should be in the protection scope of this patent.In addition, the present invention and the type of attachment in radio station include but
It is not limited to the form of independent peripheral, can also be embedded in radio station or be integrated to radio station script circuit in the form of independent board
In.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (6)
1. a kind of Real-time voice noise reduction system applied to earth-space communication, which is characterized in that including power supply, speech input interface,
Speech output interface, audio A/D/DA and noise reduction processing unit, in which:
The power supply is used to receive the input of external power supply, and for the speech input interface, speech output interface, audio A/D/
DA and noise reduction processing unit power supply；
The speech input interface is for receiving audio signal；
Audio A/D/the DA is used to the audio signal being converted into digital signal, and is sent to noise reduction processing unit；
The noise reduction processing unit carries out noise reduction process to the digital signal, and generates noise reduction speech and be sent to audio A/D/DA
In be converted into analog signal；
The speech output interface is for the analog signal to be output to the outside.
2. according to claim 1 be applied to earth-space communication Real-time voice noise reduction system, which is characterized in that including radio station,
Speech noise reducing apparatus, receiving device, in which:
The radio station is for carrying out demodulation to the audio signal and generating demodulation speech when receiving audio signal；
The speech noise reducing apparatus is used to carry out demodulation speech noise reduction to generate noise reduction speech, and is mould by the noise reduction voice conversion
Quasi- signal is sent to receiving device；
The receiving device is for receiving the analog signal.
3. being applied to the Real-time voice noise reduction system of earth-space communication according to claim 1, which is characterized in that including several electricity
Platform, switching equipment, speech noise reducing apparatus, receiving device, in which:
Several radio station are for carrying out demodulation to the audio signal and generating respectively corresponding demodulation words when receiving audio signal
Sound；
Several radio station for connecting by the switching equipment with speech noise reducing apparatus；
The speech noise reducing apparatus is used to carry out demodulation speech noise reduction to generate noise reduction speech, and is mould by the noise reduction voice conversion
Quasi- signal is sent to receiving device；
The receiving device is for receiving the analog signal.
4. according to the Real-time voice noise reduction system for being applied to earth-space communication any in claim 2,3, which is characterized in that institute
The reception mode for stating receiving device is cable network reception or wireless receiving.
5. being applied to the Real-time voice noise reduction system of earth-space communication according to claim 4, which is characterized in that the reception
Equipment includes cable, loudspeaker, earphone.
6. according to the Real-time voice noise reduction system for being applied to earth-space communication any in claim 2,3, which is characterized in that institute
Speech noise reducing apparatus is stated to be arranged in the circuit in the radio station.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910213860.6A CN110232930A (en) | 2019-03-20 | 2019-03-20 | A kind of Real-time voice noise reduction system applied to earth-space communication |
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| CN201910213860.6A CN110232930A (en) | 2019-03-20 | 2019-03-20 | A kind of Real-time voice noise reduction system applied to earth-space communication |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020186740A1 (en) * | 2019-03-20 | 2020-09-24 | 成都天奥信息科技有限公司 | Real-time voice noise reduction system applied to ground-to-air communication |
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| CN210200320U (en) * | 2019-03-20 | 2020-03-27 | 成都天奥信息科技有限公司 | Real-time voice noise reduction equipment applied to ground-to-air communication |
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2019
- 2019-03-20 CN CN201910213860.6A patent/CN110232930A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101022485A (en) * | 2007-03-23 | 2007-08-22 | 中国电子科技集团公司第二十八研究所 | Ground-air speech coupling method and system for realizing ground-air talking |
| CN101702275A (en) * | 2009-08-20 | 2010-05-05 | 达新宇 | Short-wave digital radio station network simulated training system |
| CN201733347U (en) * | 2010-06-24 | 2011-02-02 | 广州海格通信集团股份有限公司 | Digital transmitter/receiver |
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| WO2020186740A1 (en) * | 2019-03-20 | 2020-09-24 | 成都天奥信息科技有限公司 | Real-time voice noise reduction system applied to ground-to-air communication |
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