基于GSM网络的数字音频信号控制方法  

Digital Audio Signal Control Based on GSM Network

作　　者：张毅[1] ZHANG Yi(Anhui Jianzhu University,Hefei 230000,China)

机构地区：[1]安徽建筑大学,安徽合肥230000

出　　处：《内蒙古民族大学学报（自然科学版）》2020年第4期292-297,315,共7页Journal of Inner Mongolia Minzu University：Natural Sciences

基　　金：国家重点研发计划项目(2017YFC0704100);安徽建筑大学质量工程项目(2018kf03)。

摘　　要：为提高数字音频信号的输出稳定性,及信号输出的信噪比,提出基于GSM网络的数字音频信号控制方法.构建GSM(Global System for Mobile communications)网络数字音频信号采样模型,采用高分辨的图谱特征提取方法进行GSM网络数字音频信号的谱分析,结合小波尺度分解方法进行GSM网络数字音频信号特征分解,建立GSM网络数字音频信号的信号滤波和噪声抑制模型,采用分段匹配滤波检测器进行GSM网络数字音频信号的输出抗干扰设计,在GSM网络中实现数字音频信号的输出均衡处理,提高GSM网络数字音频信号的输出均衡性和抗干扰性,采用分数间隔均衡控制方法,实现GSM网络数字音频信号的输出优化控制.仿真结果表明,采用该方法进行GSM网络数字音频信号输出控制的自适应性较好,特征分辨能力较强,提高了数字音频信号的输出稳定性.In order to improve the output stability of digital audio signal and improve the signal-to-noise ratio(SNR)of signal output,a digital audio signal control method based on Global System for Mobile communica⁃tions(GSM)network is proposed.The sampling model of digital audio signal in GSM network was constructed.The spectral analysis of digital audio signal in GSM network was carried out by using a high resolution spectrum feature extraction method.The feature decomposition of digital audio signal in GSM network was carried out with a wavelet scale decomposition method.The signal filtering and noise suppression model of digital audio sig⁃nal in GSM network was established.The output anti-interference design of digital audio signal in GSM network was carried out by using a piecewise matched filter detector.The output equalization processing of digital audio signal was realized in GSM network,and the output equalization and anti-interference of digital audio signal in GSM network were improved.The fractional interval equilibrium control method was used to realize the output optimization control of digital audio signal in GSM network.The simulation results show that the proposed meth⁃od has good adaptability and strong feature resolution ability in GSM network digital audio signal output control,which improves the output stability of digital audio signal.

关 键 词：GSM网络 数字音频信号 信号控制 特征分解 

分 类 号：TN911.23[电子电信—通信与信息系统]