说明：  在此教程中的例子对一个将音频信号数字化的DSP应用程序进行仿真，调整它的volume，且调整volume产生一个模拟输出。为达到简易性，此例中没有实际的设备被用来发送和接收模拟数据，代替它的是，例子用host-generated数字数据测试运算法则。输入/输出数据和volume控制用RTDX在host和target之间进行调
(In this tutorial example of the audio signal to a digital simulation of DSP applications, adjust its volume, and adjust the volume produces an analog output. In order to achieve simplicity, in this case there is no actual devices are used to send and receive analog data, instead it is the case with the host-generated digital data test algorithms. Input/output data, and volume control in the host and target using RTDX transfer between the)