Since AM screening is the mainstream in current digital screening, this paper researches thoroughly on the arithmetical model of digital AM screening technique and analyzes and compares the advantages and disadvantages of every screening algorithm.

• 鉴于调幅加网仍是目前数字加网的主流，论文深入研究了数字调幅加网技术的算法模型，分析对比了各种算法的优缺点。