In the second chapter, the author illustrates the characteristics of driver develop kit WDM,and designs the drivers of DSP-ADPCM card in WDM from several key drivers technology.

• 然后着重描述了Windows 2000下DSP-ADPCM语音采集压缩卡驱动程序的设计与实现,作者介绍了驱动程序开发环境WDM的特性; 进行了驱动程序的总体设计;