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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?
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maybe using MCISendString, i don't know how though
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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.