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I want my VB program to listen to the MIC input of the soundblaster card and filter the sound with a band-pass filter or do an FFT on it, and show the results on a VB graph.
Is there VB code anywhere to drive the DSP chip in the sound-blaster card to do all the hard work?
maybe using MCISendString, i don't know how though
If you understand C, then look at the SB Developer Information Pack, free for download from Creative's site. However, it would probably be easier to open the microphone device as a recording source, and do it that way.