kmixer is a kernel level audio mixer for Linux,like esd or aRtsd. It s works in kernel mode, so it can handle all requests to /dev/dsp, and mix all audio streams from all process, accessing to dsp and writing to real dsp.

linux 下对混音器的命令行调节程序，可以设定VOL，PCM，MIC增益,mixer under linux command line conditioning program, you can set the VOL, PCM, MIC gain