数模转换过程中的频谱失真及其校正方法

Spectrum distortion in a D/A converting process and its correctiong method

建立了D/A转换器的数学模型 ,分析了D/A转换器将数字信号转换为模拟信号时产生的频谱失真 ,导出了频率补偿网络的传递函数 ,利用频率采样法设计了FIR型频率补偿数字滤波器 。

The mathematical model of a D/A converter is established.The spectrum distortion is analysed when the D/A converter transfers digital signals to analog signals.The transfer function of a frequency compensation network is presented.The FIR type frequency compensation digital filter is designed by a frequency sampling method along with a correcting example.