I have been scanning the guides and forums and can't seem to find an answer to my simple question. It seems that I am getting sporadic buzzing. The buzz appears with the normal sound of the movie. This does not happen when I capture from my Hi8 camcorder so it probably is the source.
OK, I am trying to backup an VHS tape using my ATI AIW Radeon 32MB. I am using composite inputs (Red/White/Black cables) and a decent Sanyo 4 head vcr. I am capturing with MMC8.7 with Lordsmurfs guide and optimizations. I am capturing as an MPEG-2 using a max bit rate of 5MB/s with 352x480. My audio is 48khz, 16 bit, stereo (The vhs tape is stereo!!).
My question is what is likely to cause this and is there an easy way to clean it up after capturing with MMC? I know that virtualdub has a noise reduction but I really like the ease of MMC.
Thanks!
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Buzzing on a 'source' VHS tape can be a lot of things: creasing in the tape itself, motor noise, dried rubber rollers in the transport. Do you have the means to try the same tape in another VCR? That would eliminate one or the other.
Editing out certain frequencies in audio streams can be done, but it's time-consuming, generally affects the overall quality, and is not foolproof. Unless you have something like SoundForge, you may find it to be more problems than its worth. -
What you have sounds to me like a ground loop problem that i had and thats been discussed plenty in the forum.The trick i did to get rid of the noise was to get 2 fm adapters,the type you screw onto old tv sets and i strip the two leads on each end and join them together and then wrapped foil around the taped connections and put that in circuit from the cable in to cable out to vcr in.i got this method from an earlier post just to give credit.Make sure the fm adaptors aren`t shorted.Hope this cures your problem.
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Originally Posted by mastersmurfie
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Could be one of the 3 faults discussed ,just gotta narrow it down.
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i've also had buzzing/distortion due to onboard sound on an iwill motherboard
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I have an on-board sound card on my ECS MB. It seems like it works fine for my Hi8 captures so I never thought about the sound card being the problem.
I do have a different 4 head vcr but it is much less quality (bought at walmart for the kids bedroom). I will give it a try just in case.
I do have a old ISA sound card but don't have an ISA slot on my fairly new MB. I would have to do alot of re-arranging of my wifes computer to try it on hers but I cringe just thinking about it.
It seems to be at its worst when the sound levels peak. If there was simply a filter that would normalize the tape I think that would clean most of it up.
Finally, I want to thank everyone for their quick responses and suggestions. It is cool having resources like this!!!
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