Short wave receiver and denoising method thereof
A receiver, short wave technology, applied in electrical components, transmission systems, etc., can solve the problems of short wave receiving personnel interference, earphone noise, etc., to ensure continuity and improve comfort.
Active Publication Date: 2016-03-23
西安烽火电子科技有限责任公司
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At present, this kind of receiver data output process is widely used, but because this kind of shortwave receiver is in the receiving state even if there is no voice signal, there will always be noise output in the earphone, which will greatly interfere with shortwave receivers
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[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0035] Such as figure 1 As shown, it is a schematic structural diagram of a short-wave receiver. The short-wave receiver includes a signal receiving module 1, a power amplifier module 2 electrically connected to the signal receiving module 1, and a radio frequency signal processor electrically connected to the power amplifier module 2. Module 3, a digital signal processing module 4 electrically connected to the radio frequency signal proc...
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The invention belongs to the wireless communication field, and discloses a short wave receiver and a denoising method thereof. Based on the voice detection technology, the short wave receiver determines whether a current received signal is a voice signal, does not receive a noise signal without a voice signals, and improves the comfort level of a receiver. The digital signal processing module of the short wave receiver comprises a signal preprocessing sub-module, a voice signal detection sub-module in electric connection with the signal preprocessing sub-module, and a denoising function control sub-module in electric connection with the voice signal detection sub-module; the voice signal detection sub-module is used for determining whether a signal processed by the signal preprocessing sub-module is a voice signal; the denoising function control sub-module is used for controlling a signal output module not to output the signal processed by the signal preprocessing sub-module when the signal processed by the signal preprocessing sub-module is not a voice signal.
Description
Technical field [0001] The present invention relates to the field of wireless communication systems, and in particular to a shortwave receiver and its denoising method. Background technique [0002] Shortwave receivers are widely used in field military communications, and the quality of the received signal directly affects the issuing of military orders and the comfort of the receiving personnel. As we all know, shortwave communication mainly relies on sky waves, and the ionospheric reflection channel is a time-varying dispersion channel, which is characterized by path loss, delay spread, noise and interference, etc., which are constantly changing with frequency, location, season, day and night. Therefore, noise in shortwave communication is an inevitable part of the receiver. Engineers have conducted a lot of research on signal noise reduction processing in the receiver according to the characteristics of shortwave communication. However, due to the complex interference of short...
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CPCH04B1/1661
Inventor 冯永乾王陈春马洪峰田杰邱利利杨鹏黄超龚磊赵亮仇妙月
Owner 西安烽火电子科技有限责任公司