The method has advantages in convergence properties and com-putational efficiency over the standard mininum gradient algorithm. It also meets the echo can-celler requirements of the CCITT G.

• 这种方法的收敛性能和计算效率均优于标准的最小梯度算法；且满足国际电报电话咨询委员会(CCITT)建议的回波抵消器要求G.