WO2020186740A1 - Real-time voice noise reduction system applied to ground-to-air communication - Google Patents
Real-time voice noise reduction system applied to ground-to-air communication Download PDFInfo
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- the invention relates to ground-to-air communication, real-time voice calls and noise reduction equipment, and in particular to a real-time voice noise reduction system applied to ground-to-air communication.
- the present invention provides a real-time voice noise reduction system applied to ground-to-air communications, and improves the radio station's performance in severe weather and complex electromagnetic environments. Output voice signal-to-noise ratio to improve call quality.
- a real-time voice noise reduction system applied to ground-to-air communication including a power supply, a voice input interface, a voice output interface, audio AD/DA, and a noise reduction processing unit, wherein: the power supply is used to receive the input of an external power supply and is The voice input interface, the voice output interface, the audio AD/DA, and the noise reduction processing unit are powered; the voice input interface is used to receive audio signals; the audio AD/DA is used to convert the audio signals into digital signals, And send it to a noise reduction processing unit; the noise reduction processing unit performs noise reduction processing on the digital signal, and generates noise reduction voice, which is sent to the audio AD/DA and converted into an analog signal; the voice output interface is used to The analog signal is output to the outside.
- This design uses digital noise reduction processing, first through audio AD/DA conversion, the audio analog signal is converted into a digital signal and then processed, the noise reduction effect is greatly improved, compared with the direct processing method of the analog signal in the prior art In other words, the noise reduction ability is stronger, and the delay is not high, it will not affect the normal communication, and the improvement of the noise reduction effect can effectively increase the communication efficiency.
- a system of a real-time voice noise reduction system applied to ground-to-air communication including a radio station, a voice noise reduction device, and a receiving device.
- the radio station When the radio station is used to receive an audio signal, the audio signal is demodulated to generate demodulation Voice;
- the voice noise reduction device is used to reduce the noise of the demodulated voice to generate noise-reduced voice, and convert the noise-reduced voice into an analog signal to send to the receiving device; the receiving device is used to receive the analog signal.
- Another system of real-time voice noise reduction system applied to ground-to-air communication includes several radio stations, switching equipment, voice noise reduction equipment, and receiving equipment.
- the signal is demodulated to generate respective corresponding demodulated voice;
- the switching device is used to connect the several radio stations with a voice noise reduction device;
- the voice noise reduction device is used to reduce the noise of the demodulated voice to generate noise reduction voice, and
- the noise-reduced voice is converted into an analog signal and sent to a receiving device; the receiving device is used to receive the analog signal.
- the receiving mode of the receiving device is wired receiving or wireless receiving.
- the receiving device includes a network cable, a speaker, and a headset.
- the voice noise reduction equipment is arranged in the circuit of the radio station.
- the present invention has the following advantages and beneficial effects:
- a real-time voice noise reduction system applied to ground-to-air communication of the present invention reduces the influence of noise by adding noise reduction equipment, improves the output voice signal-to-noise ratio of the station in severe weather and complex electromagnetic environment, and improves the quality of the call.
- Figure 1 is a schematic diagram of the principle of the present invention
- Figure 2 is a schematic diagram of the system constructed by the present invention.
- FIG. 3 is a schematic diagram of another system constructed by the present invention.
- the demodulated voice is sent to the radio voice noise reduction equipment through the voice input/output interface; then, the audio AD/DA converts the input voice into a digital signal and sends it to the noise reduction processing unit; next, the noise reduction processing unit performs the demodulation voice Noise reduction, and send the processed voice to audio AD/DA; finally, the audio AD/DA converts the noise reduction voice into an analog signal and outputs it through the voice input/output interface.
- the noise-reduced voice signal-to-noise ratio processed by the radio voice noise reduction equipment can be increased by 5-10dB, and the processing delay is no more than 16 milliseconds.
- the radio sends the demodulated voice to the voice noise reduction device for the radio through the network cable, and the radio uses the voice noise reduction device to reduce the noise of the demodulated voice, and sends the noise reduction voice out through the network cable. It can significantly improve the output voice signal-to-noise ratio of the radio in severe weather and complex electromagnetic environment, and improve the quality of the call.
- the connection mode of the radio station includes but is not limited to a one-to-one connection mode, and a many-to-one connection mode in which multiple radio stations are connected to one radio station with voice noise reduction equipment; by adding a switching device , For example, audio switches, etc., through switching equipment to achieve the function of simultaneous noise reduction of multiple radio stations, which can effectively reduce energy consumption, facilitate installation and settings, and also reduce the cost of equipment; noise reduction voice output includes but not limited to network cables, speakers, headphones, Other wired or wireless voice transmission methods should be within the protection scope of this patent.
- the connection form of the present invention and the radio station includes but is not limited to the form of independent peripherals, and can also be embedded in the radio station in the form of an independent board card or integrated into the original circuit of the radio station.
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Abstract
Disclosed is a real-time voice noise reduction system applied to ground-to-air communication, comprising a power supply, a voice input interface, a voice output interface, an audio AD/DA converter, and a noise reduction processing unit. The power supply is used for receiving input of an external power supply, and supplies power to the voice input interface, the voice output interface, the audio AD/DA converter, and the noise reduction processing unit; the voice input interface is used for receiving an audio signal; the audio AD/ DA converter is used for converting the audio signal into a digital signal and sending same to the noise reduction processing unit; the noise reduction processing unit performs noise reduction processing on the digital signal, and generates a noise reduction voice and sends same to the audio AD/DA converter; the audio AD/DA converter converts the noise reduction voice into an analog signal; the voice output interface is used for outputting the analog signal to the outside.
Description
本发明涉及地空通信、实时语音通话及其降噪设备，具体涉及一种应用于地空通信的实时话音降噪系统。The invention relates to ground-to-air communication, real-time voice calls and noise reduction equipment, and in particular to a real-time voice noise reduction system applied to ground-to-air communication.
现有电台仍沿袭AM/FM模式的话音通信体制，极易受环境影响。当遭遇恶劣天气或复杂电磁环境时，电台输出话音信噪比明显降低，背景噪声提高，通话质量下降。Existing radio stations still follow the AM/FM mode voice communication system and are extremely vulnerable to environmental influences. When encountering severe weather or complex electromagnetic environment, the signal-to-noise ratio of the output voice of the radio station is significantly reduced, the background noise is increased, and the call quality is reduced.
发明内容Summary of the invention
本发明为了解决现有的电台所使用的AM/FM极易受到环境影响导致噪声的问题，提供一种应用于地空通信的实时话音降噪系统，提升电台在恶劣天气和复杂电磁环境下的输出话音信噪比，提升通话质量。In order to solve the problem that the AM/FM used by the existing radio stations are easily affected by the environment and cause noise, the present invention provides a real-time voice noise reduction system applied to ground-to-air communications, and improves the radio station's performance in severe weather and complex electromagnetic environments. Output voice signal-to-noise ratio to improve call quality.
本发明通过下述技术方案实现：The present invention is realized through the following technical solutions:
一种应用于地空通信的实时话音降噪系统，包括电源、话音输入接口、话音输出接口、音频AD/DA以及降噪处理单元，其中：所述电源用于接收外部电源的输入，并为所述话音输入接口、话音输出接口、音频AD/DA以及降噪处理单元供电；所述话音输入接口用于接收音频信号；所述音频AD/DA用于将所述音频信号转换成数字信号，并发送至降噪处理单元；所述降噪处理单元对所述数字信号进行降噪处理，并生成降噪话音发送至音频AD/DA中转换成模拟信号；所述话音输出接口用于将所述模拟信号向外部输出。A real-time voice noise reduction system applied to ground-to-air communication, including a power supply, a voice input interface, a voice output interface, audio AD/DA, and a noise reduction processing unit, wherein: the power supply is used to receive the input of an external power supply and is The voice input interface, the voice output interface, the audio AD/DA, and the noise reduction processing unit are powered; the voice input interface is used to receive audio signals; the audio AD/DA is used to convert the audio signals into digital signals, And send it to a noise reduction processing unit; the noise reduction processing unit performs noise reduction processing on the digital signal, and generates noise reduction voice, which is sent to the audio AD/DA and converted into an analog signal; the voice output interface is used to The analog signal is output to the outside.
本设计通过数字化降噪处理，首先通过音频AD/DA转换，将音频模拟信号转换为数字信号后再做处理，降噪效果有很大的提高，相比较现有技术对模拟信号直接处理的方式来说，降噪能力更强，且延时不高，不会影响正常通信，提高降噪效果可以有效的增加通信效率。This design uses digital noise reduction processing, first through audio AD/DA conversion, the audio analog signal is converted into a digital signal and then processed, the noise reduction effect is greatly improved, compared with the direct processing method of the analog signal in the prior art In other words, the noise reduction ability is stronger, and the delay is not high, it will not affect the normal communication, and the improvement of the noise reduction effect can effectively increase the communication efficiency.
一种应用于地空通信的实时话音降噪系统的系统，包括电台、话音降噪设备、接收设备，其中：所述电台用于接收到音频信号时，对该音频信号进行解调生成解调话音；所述话音降噪设备用于对解调话音进行降噪生成降噪话音，并将该降噪话音转换为模拟信号发送至接收设备；所述接收设备用于接收所述模拟信号。A system of a real-time voice noise reduction system applied to ground-to-air communication, including a radio station, a voice noise reduction device, and a receiving device. When the radio station is used to receive an audio signal, the audio signal is demodulated to generate demodulation Voice; The voice noise reduction device is used to reduce the noise of the demodulated voice to generate noise-reduced voice, and convert the noise-reduced voice into an analog signal to send to the receiving device; the receiving device is used to receive the analog signal.
另一种应用于地空通信的实时话音降噪系统的系统，包括若干电台、交换设备、话音降噪设备、接收设备，其中：所述若干电台用于接收到音频信号时，对所述音频信号进行解调生成各自对应解调话音；所述交换设备用于将所述若干电台与话音降噪设备连接；所述话音降噪设备用于对解调话音进行降噪生成降噪话音，并将该降噪话音转换为模拟信号发送至接收设备；所述接收设备用于接收所述模拟信号。Another system of real-time voice noise reduction system applied to ground-to-air communication includes several radio stations, switching equipment, voice noise reduction equipment, and receiving equipment. When the several radio stations are used to receive audio signals, they The signal is demodulated to generate respective corresponding demodulated voice; the switching device is used to connect the several radio stations with a voice noise reduction device; the voice noise reduction device is used to reduce the noise of the demodulated voice to generate noise reduction voice, and The noise-reduced voice is converted into an analog signal and sent to a receiving device; the receiving device is used to receive the analog signal.
进一步的，所述接收设备的接收方式为有线接收或无线接收。Further, the receiving mode of the receiving device is wired receiving or wireless receiving.
进一步的，所述接收设备包括网线、扬声器、耳机。Further, the receiving device includes a network cable, a speaker, and a headset.
进一步的，所述话音降噪设备设置在所述电台的电路中。Further, the voice noise reduction equipment is arranged in the circuit of the radio station.
本发明与现有技术相比，具有如下的优点和有益效果：Compared with the prior art, the present invention has the following advantages and beneficial effects:
本发明一种应用于地空通信的实时话音降噪系统通过增加降噪设备来降低噪声的影响，提升电台在恶劣天气和复杂电磁环境下的输出话音信噪比，提升通话质量。A real-time voice noise reduction system applied to ground-to-air communication of the present invention reduces the influence of noise by adding noise reduction equipment, improves the output voice signal-to-noise ratio of the station in severe weather and complex electromagnetic environment, and improves the quality of the call.
此处所说明的附图用来提供对本发明实施例的进一步理解，构成本申请的一部分，并不构成对本发明实施例的限定。在附图中：The drawings described here are used to provide a further understanding of the embodiments of the present invention, constitute a part of the application, and do not constitute a limitation to the embodiments of the present invention. In the attached picture:
图1为本发明原理示意图；Figure 1 is a schematic diagram of the principle of the present invention;
图2为本发明所构成的系统示意图；Figure 2 is a schematic diagram of the system constructed by the present invention;
图3为本发明所构成的另一种系统示意图。Figure 3 is a schematic diagram of another system constructed by the present invention.
为使本发明的目的、技术方案和优点更加清楚明白，下面结合实施例和附图，对本发明作进一步的详细说明，本发明的示意性实施方式及其说明仅用于解释本发明，并不作为对本发明的限定。In order to make the objectives, technical solutions, and advantages of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the embodiments and drawings. The exemplary embodiments of the present invention and the description thereof are only used to explain the present invention, not As a limitation of the present invention.
实施例1Example 1
如图1所示，其包括电源、话音输入/输出接口、音频AD/DA和降噪处理单元。首先，解调话音通过话音输入/输出接口送入电台话音降噪设备；然后，音频AD/DA将输入话音转换成数字信号送降噪处理单元；紧接着，降噪处理单元对解调话音进行降噪，并将处理后的话音送音频AD/DA；最后，音频AD/DA将降噪话音转换成模拟信号并通过话音输入/输出接口向外输出。当输入话音信噪比为0dB时，经电台话音降噪设备处理后的降噪话音信噪比能提升5～10dB，且处理延时不大于16毫秒。As shown in Figure 1, it includes a power supply, voice input/output interface, audio AD/DA and noise reduction processing unit. First, the demodulated voice is sent to the radio voice noise reduction equipment through the voice input/output interface; then, the audio AD/DA converts the input voice into a digital signal and sends it to the noise reduction processing unit; next, the noise reduction processing unit performs the demodulation voice Noise reduction, and send the processed voice to audio AD/DA; finally, the audio AD/DA converts the noise reduction voice into an analog signal and outputs it through the voice input/output interface. When the input voice signal-to-noise ratio is 0dB, the noise-reduced voice signal-to-noise ratio processed by the radio voice noise reduction equipment can be increased by 5-10dB, and the processing delay is no more than 16 milliseconds.
如图2所示，电台将解调话音通过网线送入电台用话音降噪设备中，电台用话音降噪设备对解调话音进行降噪，并通过网线将降噪话音向外送出。能明显提升电台在恶劣天气和复杂电磁环境下的输出话音信噪比，提升通话质量。As shown in Figure 2, the radio sends the demodulated voice to the voice noise reduction device for the radio through the network cable, and the radio uses the voice noise reduction device to reduce the noise of the demodulated voice, and sends the noise reduction voice out through the network cable. It can significantly improve the output voice signal-to-noise ratio of the radio in severe weather and complex electromagnetic environment, and improve the quality of the call.
实施例2Example 2
如图3所示，电台的连接方式包括但不局限于一对一的连接方式，也可以采用多部电台与一个电台用话音降噪设备相连接的多对一连接方式；通过增加一个交换设备，例如音频交换机等，通过交换设备实现多电台同时降噪的功能，可以有效减少能耗，方便安装设置，也可降低设备的成本；降噪话音输出包括但不局限于网线，扬声器、耳机、其他有线的或无线 的话音传输方式都应在本专利的保护范围内。此外，本发明与电台的连接形式包括但不局限于独立外设的形式，也可以以独立板卡的形式嵌入电台中或集成至电台原本电路中。As shown in Figure 3, the connection mode of the radio station includes but is not limited to a one-to-one connection mode, and a many-to-one connection mode in which multiple radio stations are connected to one radio station with voice noise reduction equipment; by adding a switching device , For example, audio switches, etc., through switching equipment to achieve the function of simultaneous noise reduction of multiple radio stations, which can effectively reduce energy consumption, facilitate installation and settings, and also reduce the cost of equipment; noise reduction voice output includes but not limited to network cables, speakers, headphones, Other wired or wireless voice transmission methods should be within the protection scope of this patent. In addition, the connection form of the present invention and the radio station includes but is not limited to the form of independent peripherals, and can also be embedded in the radio station in the form of an independent board card or integrated into the original circuit of the radio station.
以上所述的具体实施方式，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present invention in further detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the scope of the present invention. The scope of protection, any modification, equivalent replacement, improvement, etc., made within the spirit and principle of the present invention should be included in the scope of protection of the present invention.
Claims (6)
- 一种应用于地空通信的实时话音降噪系统，其特征在于，包括电源、话音输入接口、话音输出接口、音频AD/DA以及降噪处理单元，其中：A real-time voice noise reduction system applied to ground-to-air communication, which is characterized by comprising a power supply, a voice input interface, a voice output interface, audio AD/DA, and a noise reduction processing unit, wherein:所述电源用于接收外部电源的输入，并为所述话音输入接口、话音输出接口、音频AD/DA以及降噪处理单元供电；The power supply is used to receive the input of an external power supply, and supply power to the voice input interface, voice output interface, audio AD/DA, and noise reduction processing unit;所述话音输入接口用于接收音频信号；The voice input interface is used to receive audio signals;所述音频AD/DA用于将所述音频信号转换成数字信号，并发送至降噪处理单元；The audio AD/DA is used to convert the audio signal into a digital signal and send it to a noise reduction processing unit;所述降噪处理单元对所述数字信号进行降噪处理，并生成降噪话音发送至音频AD/DA中转换成模拟信号；The noise reduction processing unit performs noise reduction processing on the digital signal, generates noise reduction speech, sends it to the audio AD/DA, and converts it into an analog signal;所述话音输出接口用于将所述模拟信号向外部输出。The voice output interface is used to output the analog signal to the outside.
- 根据权利要求1所述应用于地空通信的实时话音降噪系统，其特征在于，包括电台、话音降噪设备、接收设备，其中：The real-time voice noise reduction system applied to ground-to-air communications according to claim 1, characterized in that it comprises a radio station, voice noise reduction equipment, and receiving equipment, wherein:所述电台用于接收到音频信号时，对该音频信号进行解调生成解调话音；When the radio station receives an audio signal, demodulate the audio signal to generate demodulated voice;所述话音降噪设备用于对解调话音进行降噪生成降噪话音，并将该降噪话音转换为模拟信号发送至接收设备；The voice noise reduction device is used to reduce the noise of the demodulated voice to generate a noise reduction voice, and convert the noise reduction voice into an analog signal to send to the receiving device;所述接收设备用于接收所述模拟信号。The receiving device is used to receive the analog signal.
- 根据权利要求1所述应用于地空通信的实时话音降噪系统，其特征在于，包括若干电台、交换设备、话音降噪设备、接收设备，其中：The real-time voice noise reduction system applied to ground-to-air communications according to claim 1, characterized in that it comprises several radio stations, switching equipment, voice noise reduction equipment, and receiving equipment, among which:所述若干电台用于接收到音频信号时，对所述音频信号进行解调生成各自对应解调话音；The several radio stations are used to demodulate the audio signal to generate the corresponding demodulated voice when the audio signal is received;所述交换设备用于将所述若干电台与话音降噪设备连接；The switching device is used to connect the several radio stations with a voice noise reduction device;所述话音降噪设备用于对解调话音进行降噪生成降噪话音，并将该降噪话音转换为模拟信号发送至接收设备；The voice noise reduction device is used to reduce the noise of the demodulated voice to generate a noise reduction voice, and convert the noise reduction voice into an analog signal to send to the receiving device;所述接收设备用于接收所述模拟信号。The receiving device is used to receive the analog signal.
- 根据权利要求2、3中任意所述应用于地空通信的实时话音降噪系统，其特征在于，所述接收设备的接收方式为有线接收或无线接收。The real-time voice noise reduction system applied to ground-to-air communications according to any of claims 2 and 3, wherein the receiving method of the receiving device is wired or wireless.
- 根据权利要求4中所述应用于地空通信的实时话音降噪系统，其特征在于，所述接收设备包括网线、扬声器、耳机。The real-time voice noise reduction system applied to ground-to-air communication according to claim 4, wherein the receiving device includes a network cable, a speaker, and a headset.
- 根据权利要求2、3中任意所述应用于地空通信的实时话音降噪系统，其特征在于，所述话音降噪设备设置在所述电台的电路中。The real-time voice noise reduction system applied to ground-to-air communication according to any of claims 2 and 3, wherein the voice noise reduction device is arranged in the circuit of the radio station.
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