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Strange interference caused by movement when recording to pc???

JACOB9

New Member
I have noticed a strange interference triggered by physical movement when recording vinyl to the pc, the noise is not there until I drop the needle onto the record, as soon as I do that every time I move, not walking across the room or even touching the floor or anything to cause any vibration but just by sitting in a chair and moving my arm a few inches a strange noise comes through the right channel as you can hear in the clip I have uploaded here http://www.divshare.com/download/23782915-d10 I have a technics SL1200 going into an Art DJ preII pre-amp then into the pc line in. I have tried different bitrates etc on the line in but it's always there, when I plug the pre-amp straight into the stereo (not via the pc) there is no noise caused by me moving so I know it is something to do with the pc but what I don't understand is how this noise occurs by me just moving my hand a few inches??? Why is it only when the needle is sat on the record this happens and how the hell is it picking up these small movements without me touching anything? I eliminated it being my mobile phone I switched that off and moved it to another room, checked the ground connection to the pre amp which is ok but the strange noise is still there. There is a good few feet between the turntable / pre amp and the pc. Can somebody shed any light as I want to get rid of this annoying noise as it is coming through on quiet parts of the songs and between tracks.
 
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Do you have wi-fi on that computer? (Or another one in the room?)
You could be shielding/reflecting a small amount of RF, possibly causing a change in transmit output based on measured input signal strength.
Bluetooth, too.

Maybe try using just the input cable, plugged into the computer but not the preamp, and shorting tip to ground on both channels.

After that, I'm out of wild guesses, which is what these are!

Chip
 
I'd suspect static and poor grounding, especially if you're in a cold climate in a carpeted room running a furnace. Low humidity can do all sorts of strange things.

I quieted mine down running a piece of 18 gauge wire between the receiver, phono stage, and HTPC. A spool from the auto store should do ya. If there's no grounding lug, just use a case screw and eyelet. Bonus, it's quieter all around even just spinning some tunes.

Also, waddaya doing in the room in the first place? Fire it up and exit before needle drop and that should minimize any such issue. Also helps to turn the speakers down to idle or off so you don't have any additional vibration or field effects that can dirty up the rip. A good humidifier is handy for cutting static and such before it happens too.

None of that works, maybe double check the wiring on the cartridge and arm ... might help, and couldn't hurt. Those are usually soldered at the board end, but the slip fit connectors can get loose and/or corroded. A bit of a crimp and a touch of DeOxit Gold every now and then is a good thing for getting the best out of your system even if it's not making any horrible noises. Same with the RCA connections.

Make sure you post up with what worked ... and luck wit it ...
 
If all options are exhausted and the problem persists, try using a USB-connected external soundcard (or other capture device like a Xitel inPort).
They decouple and eliminate interference issues quite effectively.
 
Ya ... that too ... most any onboard computer sound suffers severe suckage. I use a Behringer UCA202 usb DAC/ADC ...

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Nice little box - plug 'n play USB with no drivers required. You can pay a lot more for a lot less. Doesn't do high res, but who needs more than redbook anyway?

I also use a DJ PRE II - which DOES have a grounding lug on the back.
 
thanks for all the suggestions, I unplugged the modem which has wireless and just had the headphones plugged straight into the pc but the same thing......I think seeing as there is no issue when the pre-amp is plugged straight into the stereo then I do not think the problem lies with the wiring on the turntable or the grounding onto the pre-amp which is secure. The problem is probably the on board sound VIA VT1708 codec which although is high definition and actually sounds pretty good is probably the prime suspect, the Behringer usb device looks interesting I have been considering an external unit to eliminate the probable cause and everything I have seen so far does more than what I need which is just to record vinyl so thanks for this, my only concern with this device will it do an ortofon 30 stylus any justice? Also I want to record in 16bit / 44.1khz so I can burn to cd without any resampling - is this format supported by the unit and it is it good enough to show the difference between a stylus like this and the DJ-S stylus which came with the turntable? I could really do without a bunch of huge 24-bit 96khz files!
 
My sentiments exactly ... enough is ... enough.

CD Redbook is 44.1/16 and the UCA202 does up to 48/16, so no problems there. The ADC side does a nice clean rip, and it's also got a fine DAC side, so you're ready for feeding your digital rips out to the stereo. As said, it's a one stop box, and you can pay a lot more for a lot less. If I had a complaint, it's that the box is small enough it wants to skate around the cabinet. Nothing a bit of velcro couldn't cure.

*Not saying the UCA202 will hold up on playback in a head to head with ... oh, say, a Maverick D1+ ... one of my later additions to the system. But it does put out a very nice and enjoyable earful.

Biggest advantage of an outboard box is you get away from all the rf clutter and interference inside the computer. Lots of competion for resources, so you might want to consider getting an addon USB card also. I had a bit of strangeness on playback on mine using the built in ports. Too much competition from all the other USB crap I got plugged in. A self powered card on it's own channel got rid of all that.

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Syba 3 Port USB 3.0 PCI-e Card

Do try it without the card first, but keep it in mind if you hear any clicking or some such. That usually indicates dropped bits, and that's what the card fixed for me.
 
You can eliminate the computer completely by using a portable digital recorder. It is a small device that records to a memory card. When you are done recording, put the memory card in your computer and do any further editing.
 
My sentiments exactly ... enough is ... enough.

CD Redbook is 44.1/16 and the UCA202 does up to 48/16, so no problems there. The ADC side does a nice clean rip, and it's also got a fine DAC side, so you're ready for feeding your digital rips out to the stereo. As said, it's a one stop box, and you can pay a lot more for a lot less. If I had a complaint, it's that the box is small enough it wants to skate around the cabinet. Nothing a bit of velcro couldn't cure.

*Not saying the UCA202 will hold up on playback in a head to head with ... oh, say, a Maverick D1+ ... one of my later additions to the system. But it does put out a very nice and enjoyable earful.

Biggest advantage of an outboard box is you get away from all the rf clutter and interference inside the computer. Lots of competion for resources, so you might want to consider getting an addon USB card also. I had a bit of strangeness on playback on mine using the built in ports. Too much competition from all the other USB crap I got plugged in. A self powered card on it's own channel got rid of all that.

41z0cfg6pgL._SL500_AA300_.jpg


Syba 3 Port USB 3.0 PCI-e Card

Do try it without the card first, but keep it in mind if you hear any clicking or some such. That usually indicates dropped bits, and that's what the card fixed for me.

I am close to getting one of these UCA202 units as it seems ideal for what I need, as I said before I will only record at 16/44.1 and I am not too bothered about the DAC (playback) quality I will be playing back on something else, I am more concerned if is there any noticeable difference between the ADC (recording) quality of the UCA202 and a more expensive unit like the one you mentioned when recording at the same redbook standard and playing back on a decent setup (not via the UCA202). The alternatives are so expensive in comparison I wonder if there will be any benefit, yes they can record higher than 16/44.1 but I am not interested in doing that.
 
I have been using a Behringer UFO-202 (Very similiar unit, except mine has the phono preamp, I think thats the only difference)

*Edit: yes, I should mention that I only use the line in (I skip the preamp section and instead hook my cambridge 640p to the rca line ins). My findings are in the next paragraph

From a few of the needle drops that I've done, I felt the sound quality was not near to what I would hear if I just listened directly from my turntable to my amp, no matter what device I listen to the WAV file on. The most obvious was the soundstage, which seemed smaller and more cramped, like listening through a tube. It wasn't awful but noticeable when I compared the two.

My only conclusion is that the ADC is decent but still could be better. However not having tried any other devices, I'm not sure how much more you'd have to pay to get something noticeably better.
 
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I also have a UFO-202, but don't use the built in MM cartridge preamp.
Instead I use the preamp in my Nain NAC62 and then feed the tape output to the Behringer set to line input.
This gives me excellent ( for the price ) results.
The phono / RIAA preamp in the Behringer is very basic to say the least, from memory it is a single dual channel opamp ic with cheap passive components.
If you have one of these, or similar models, try using an external cartridge preamp and feed it into the line input. The tape loop output on your existing preamp / amp / receiver will connect directly using the usual RCA stereo interconnect, or DIN to RCA in the case of older Naim kit.

Other than the phono preamp the UFO-202 seems to do a fine job for what it costs. I use mine to rip vinyl to WAV or FLAC, and to play downloaded FLAC's from Linn etc. Linn FLAC files sound excellent played with VLC media player on a laptop with the Behringer connected to the NAC62's tape loop.
I reckon you'ld have to spend a lot more money to get significantly better results.. maybe one of the 24/192 kits from Jims Audio!

I wouldn't hesitate to buy an upgraded UFO-202 that had 96 or 192k sampling at 24 bit depth instead of the current 48k 16bit version.
 
I will be using an art dj pre II pre-amp so I will not be needing the UFO202 with the built in pre-amp. I will let you know how the sound of the UCA202 compares to the on board chip, which apart from the interference which can only be heard in quiet sections actually sounds very good to my ears. I am now thinking if I would have been better off getting the art usb phono plus instead of the dj pre amp which would have done both jobs albeit in the same box.
 
... not having compared the Behringer UCA202 with any high end products, can't say how much improvement you'd get, but I expect any difference would be more noticable with higher res recordings.

What I can say from personal experience - the UCA202 runs rings around a dedicated AT USB table that I tried when I first got into ripping vinyls. BIG difference using a quality table (Mitsubishi DP-EC10) with a decent cartridge (AT15s) and an adjustable pre (DJ II). And once again ... at CD Redbook (44.1/16).

If money is no object, you can pay thousands for an ADC. Then again, the UCA202 and it's siblings provide performance well above what you'd expect at the price.

If anything, I'd think the DAC side of the equation is more important anyway. There's no "flavor" added during a rip ... it's all just ones and zeros that should be good as long as your computer can handle the stream without hiccups. Playback is entirely different - I've since gone with a Maverick D1+ that allows me to play with different op amps and tubes to get the sound I want. I'm still using the UCA202 for rips and really see no need to change that ...
 
For the small cost I will have to try it out, I am also keen to try the Xitex inPort which is only $32 on amazon US but it does not look like it is available in the UK.
 
The UCA202 arrived and the annoying noise is gone! As far as the sound quality goes, I have put up a few samples below, the first clip is the on board sound (VIA chipset) where you can hear the annoying noise between the tracks, the second clip is using the UCA202 where you can hear no audible interference.

Both clips are recorded and saved at 16/44.1 using an SL-1200 with an Ortofon 30 needle into an Art DJ Pre-II using Audacity to record (via direct sound) with no eq editing at all. The tune is Speed Demon (sorry I used it as a test record!) I will put up samples of a different music style when I get a chance!

On board sound (VIA VT1708 codec):
http://www.divshare.com/download/23833996-e8f

Behringer U-Control UCA-202:
http://www.divshare.com/download/23833948-2a7

Also gotta say the headphone out on the UCA is much better than the on board ...although the PC is usually linked up to an amp which I plug the headphones into overall I am glad this small device has got rid of that noise and does not seem to have had a detrimental effect on the sound quality which apart from that noise I was already pleased with so thanks for the recommendation!
 
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Good to hear it all worked out for you ... proof positive, good things come in small packages.

Our work here is done! Up, up, and away!!! <G>

The UCA202 is handy if you ever get heavy into computer room eq too.

rta-hardware.jpg


Come on ... you know you want to ... nudge nudge. :D
 
I am resurrecting this thread as I have since noticed what seems to be a problem with the Behringer UCA-202 I got to replace the on board sound. In sections of the music where there is only bass there is some kind of interference which was the same noise I noticed when recording a 7'' with a sharp bump towards the center, as the needle almost came off the record there was a strange interference though I thought this would only occur on the odd occasion a record has this defect. Since recording more vinyl with the UCA-202 I have noticed this same noise, although to a lesser extent, occurs in bass only sections of tracks. I went back to the on board sound to see if the same thing occurred and despite other problems (the reason for this thread in the first place) the interference in bass only sections does not exist. I have tried changing settings on the art dj pre-amp but that sound is still there as long as I am going via the UCA-202. I have uploaded a short wav clip to demonstrate this issue, the first half is the on board sound followed by the UCA-202, both recorded under the same settings and no other changes in the setup.

Please take a listen:
http://www.divshare.com/download/25096955-ebf

Maybe somebody using the UCA-202 check for the same problem, I can only detect the noise in bass only sections of clean pressings but needless to say it is very annoying especially having recorded so much bass orientated music with this UCA-202.
 
the earlier track sounds like you invented the theremin
i couldnt hear the distortion on the second track over the very low frequency bass .my speakers just dance around .they aren't up to low bass .
 
The interference is definitely there on the second track I can hear it using various headphones. Can anyone shed any light or is this possibly an issue with the UCA-202 device?
 
I'm not sure what distortion you're hearing in the 2nd track? It clearly sounds much better than the first one throughout, and not just due to the absence of any chirping birdies heard in the first sample. Even the bass is much cleaner and more detailed.

I used to have an MAudio 2496 which gave me problems as well. The file was corrupted by a noise (frying bacon) that was inaudible during monitoring. This was coming in from an outboard ADC via s/pdif. Replacing it with a better soundcard (ESI Juli@) fixed the issue.
 
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