| 摘要: |
| 介绍了话音静噪的含义及调幅（AM）话音通信中静噪遇到的难题，论述了AM信号的中频数字
化
解调原理和话音静噪原理，提出了一种有效的AM信号调制度判别方法，最后举例说明了在实
际应用中
如何利用AM调制度判决方法来解决话音静噪问题。 |
| 关键词: 话音通信；AM调制度 话音静噪 软件无线电；信号-噪声及失真
比 |
| DOI： |
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| 基金项目: |
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| An effective integrated processing method for quieting tone and its application |
| LI Yan-bin |
| () |
| Abstract: |
| The meanings of quieting tone and the difficulty of quieting in amplitude modula
tion(AM) audi
o communication are introduced.The intermediate frequency(IF) digital
demodulation theory and quieting
tone principle are discussed. An effective method of distinguishing AM modulati
on degree i
s adopted. How to make use of the method
to solve the quieting problem in application is illustrated with an example. |
| Key words: voice communication AM modulation degree quieting tone software defined radio signal to noise and
distortion ratio(SINAD) |
