AGC算法的matlab例程，可学习自动控制增益算法-AGC algorithm matlab routines, can learn automatic gain control algorithm

该算法实现的自动增益控制，使随输入信号电平变化而引起的输出信号电平变化少。 在工程中很常用(The algorithm of the automatic gain control, so that with the input signal level changes caused by the output signal level changes less. Very common in engineering))