【摘要】 本文提出了一种用于语音信号处理器的数字式自动增益控制(AGC)方案,着重介绍了衰减量“快速增大/缓慢减小”的控制器算法和采用AD7520作为数控音频信号衰减器的硬件结构。该方法已成功地应用于LPC声码器。更多还原

【Abstract】 A scheme of digital automatic gain control (AGC) for speech signal processor is presented in this paper. "Fast attenuation/slow release" algorithm and hardware based on AD7520 as digitally controlled audio attenuator are described in detail. This technique has been used in LPC vocoders effectivelly.更多还原