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  1. I have XP, AIW Radeon with the newest drivers and MMC 7.7, SOYO Dragon plus MB with onboard C-media audio with the new drivers and PCI latency patch installed, AMD XP 1700+, 512 MB DDR. I tried capturing with VirtualDub, MMC, Ulead Video studio the audio is clear when you preview it but it sounds noisy on the captured file. I tried both line-in and CD Audio connections no difference, I tried all kinds of audio and video compression settings also did not make any difference. For some reason the audio captured from my DV camcorder is very clear.

    Any help will be highly appreciated
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  2. What is different when you cap from camera? Are you using the firewire port? If so, then you are not capturing and the onboard sound is not being used. If using conventional cable, there should be no difference in capture assuming original audio is of roughly equal quality. Quality cable with secure connections may help.

    I had problems w/C-Media onboard sound, honestly did not spend much time on it as I had acquired an SBLive. One tip that helps with feedback hum is to increase source volume and lower line-in recording level, which in MMC 7.6 at least is controlled with the preview window volume slider.

    Try capping a CD-audio test to see if clean source solves the problem. Also try removing all other boards and disabling any and all unused drives, clean unshared power source on all audio equip, Flourescent lights, electric motors can cause interference.

    Odds are its a crappy onboard audio, possibly even a bad solder joint. If all else fails try physically flexing (gently) the connection where the audio cable hits the MOBO and see if you can change the cap result. Like finding the bad spot on an old headphone cable, or a bad jack.
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  3. What is different when you cap from camera? Are you using the firewire port? If so, then you are not capturing and the onboard sound is not being used. If using conventional cable, there should be no difference in capture assuming original audio is of roughly equal quality. Quality cable with secure connections may help.

    I had problems w/C-Media onboard sound, honestly did not spend much time on it as I had acquired an SBLive. One tip that helps with feedback hum is to increase source volume and lower line-in recording level, which in MMC 7.6 at least is controlled with the preview window volume slider.

    Try capping a CD-audio test to see if clean source solves the problem. Also try removing all other boards and disabling any and all unused drives, clean unshared power source on all audio equip, Flourescent lights, electric motors can cause interference.

    Odds are its a crappy onboard audio, possibly even a bad solder joint. If all else fails try physically flexing (gently) the connection where the audio cable hits the MOBO and see if you can change the cap result. Like finding the bad spot on an old headphone cable, or a bad jack.
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  4. Interesting - I have a similar problem when capturing from TV. THe problem does not appear when watching the TV or during capture. However, when replaying the captured mpg file there is a low level hiss in the background - loud enough to be annoying.

    I'm using the Iwill K266 motherboard with onboard cmedia on a winXP system. Latest Cmedia drivers.

    I fiddled around quite a bit making sure everything else was diabled in the mixer (sounded like what you may get from an open mike line) but have not been able to resolve the issue either.
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  5. Member
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    Originally Posted by jonhildrum
    Interesting - I have a similar problem when capturing from TV. THe problem does not appear when watching the TV or during capture. However, when replaying the captured mpg file there is a low level hiss in the background - loud enough to be annoying.
    I'll bet that what you're hearing when capturing is not what goes through the A->D converter. There's probably a hardware mixer that directly passing the input to your speakers.

    I have two different Motherboards with builtin sound cards. Both suck at capturing. Both have about a noise floor of only -30DB. THe only solution was to buy a sperate sound card. My hercules fortissimo has a sound floor of -70DB. Problem solved.
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  6. I've been having the same problem! The common factor here is the combination of AIW Radeon and built-in C-media audio. I wonder if anyone has had success with the C-media chipset on a separate PCI sound card, or is it just as bad???

    The problem is only with audio from RF channels though. I think the level that reaches the line-in or cd-in connectors from the AIW is too low, and the hiss gets added in as the C-media chip tries to compensate. An in-line amplifier should help I reckon. What I tried - very recklessly after getting totally fed up with the problem - was to put a splitter on my audio out (loudspeaker) line, and run this into the line-in. I made sure the recording volume slider was way down, then edged it up to get a decent recording level. The results were good at last - no more hiss anyway. But then after a big voltage spike during a thunderstorm I lost the left channel. End of that great idea...

    Stilll, if you run a composite cable from your video or digi-box the audio should be fine. That's what I do now, and the video quality is so much better!!!

    But the real answer must be to get a proper sound card... any suggestions???

    Good luck,
    Alan
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