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SB Extigy weirdness
Hi, I'm trying to use an SB Extigy (from around 2001 or 2002) to tune
my car audio. I have windows XP. I have some software that will generate a signal and measure the response. However, there are two problems which I'm not sure how to fix: 1. When I plug a microphone into either mic in or line in (I have a preamp), it is amplified and comes out the output. I want to separate the microphone input from the output so it doesn't feedback. 2. Even when I have the microphone unplugged, it seems to read the speaker outputs anyway. Even when I have *both* speakers and mic unplugged, it still is reading the output! For example, there is a white noise generator. When I play it I can see the white noise on the screen. If I unplug the mic, it still appears. If I unpleg the speakers, it still appears. When the mic is plugged in it influences the waveform as it should, but it's definitely not ZERO when it's not plugged in. So in other words, the sound card seems to be feeding itself internally. How can I fix it so the input and output are completely separated? thanks ms |
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