Sample rate of capture audio

I found I can change sampe rate capture audio into 8000Hz by using dsound://8000. But the sound is still 16bit and stereo.
Anyone know how to change it into 8bit and mono?

I think you are right. Jmf has to play with those dll files in windows. But I have already installed the performance packs. I just got the information in jmf log which says the soundtrack can't change because it has been specified to RAW type. So I think it probobly due to the way jmf play with capture audio device. Once the audio format has been defined to capture audio device.(dsound://) It can't be changed.
I am developing a audio one-to-one chat applet which is suppose to run on windows at this stage. I will consider cross platform solution later on.
Anyway, I found an alternation which is using dsound://8000 and dvi/rtp. It can generate a 8000Hz, 4BIT MONO sound for me. It fairly good. However, I am still thinking about how to cut it down. Might be 4000Hz.... Anyone konw what it sounds like? Is it still acceptable for voice transfering?

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