Noise Audio Recording

Fabregas · 4th October 2011, 05:58 PM

Hello,

I'll try to explain my problem the best I can. Please know that I'm not a technician so maybe I'm not using the right words.

I am getting noise when recording vinyl to pc,too much to clean in adobe audition it comes out synchornised in quiet passages.

is it electrical? poor shielded cables? or ground loop problem?

Im posting link to noise file, please help.

https://www.yousendit.com/download/T...TStrUmxWeHNUQw

Fab

stratus46 · 4th October 2011, 07:35 PM

You have a fairly dirty LP but that was not unusual back in the day. You have no wiring or hum problems. You didn't know that LPs get like this?

I used to use the DiscWasher which was one of the better disc cleaners. It would reduce the dirt but never be totally clean.

G²

sofaspud · 4th October 2011, 08:02 PM

I use Goldwave. I took a sample from between 0:02.5 and 0:03 and ran it thru the noise reduction filter. It cleaned it up quite a bit! That scratchiness you find especially between 0:01 and 0:01.5 is the kind of noise you just have to try your best with. The right channel is particularly bad. Multiple noise reduction runs using different noise samples is sometimes helpful, though you always have to be aware of the overall effect on the file. Personally, if I have to fix it by redrawing portions of the waveform with a mouse, that's what I do.

stratus46 · 5th October 2011, 03:51 PM

I looked at your noise in Audition and there is a very strong component below 30 Hz indicating turntable rumble. (mechanical vibrations from bearings and motor balance). In the mid '70s the RIAA curve was modified to roll off below 20 Hz to reduce the rumble. What playback gear are you using?

You can use a hi-pass filter to improve the the low end noise and the run the 'click/pop eliminator' to get most of the ticks.

For hi-pass use FFT, log scale and click a point at 100% 30 Hz. Click another at 29 Hz 0% and drag the left most point down to 0%. You might want to save your filter for the next disc.

G²

4th October 2011, 05:58 PM	#1
Fabregas diyAudio Member Join Date: May 2011	Noise Audio Recording Hello, I'll try to explain my problem the best I can. Please know that I'm not a technician so maybe I'm not using the right words. I am getting noise when recording vinyl to pc,too much to clean in adobe audition it comes out synchornised in quiet passages. is it electrical? poor shielded cables? or ground loop problem? Im posting link to noise file, please help. https://www.yousendit.com/download/T...TStrUmxWeHNUQw Fab

4th October 2011, 08:02 PM	#3
sofaspud diyAudio Member Join Date: Nov 2005 Location: San Antonio TX	I use Goldwave. I took a sample from between 0:02.5 and 0:03 and ran it thru the noise reduction filter. It cleaned it up quite a bit! That scratchiness you find especially between 0:01 and 0:01.5 is the kind of noise you just have to try your best with. The right channel is particularly bad. Multiple noise reduction runs using different noise samples is sometimes helpful, though you always have to be aware of the overall effect on the file. Personally, if I have to fix it by redrawing portions of the waveform with a mouse, that's what I do. __________________ It is error only, and not truth, that shrinks from enquiry. - Thomas Paine

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4th October 2011, 07:35 PM	#2
stratus46 diyAudio Member Join Date: Nov 2009 Location: Los Angeles	You have a fairly dirty LP but that was not unusual back in the day. You have no wiring or hum problems. You didn't know that LPs get like this? I used to use the DiscWasher which was one of the better disc cleaners. It would reduce the dirt but never be totally clean. G²

5th October 2011, 03:51 PM	#4
stratus46 diyAudio Member Join Date: Nov 2009 Location: Los Angeles	I looked at your noise in Audition and there is a very strong component below 30 Hz indicating turntable rumble. (mechanical vibrations from bearings and motor balance). In the mid '70s the RIAA curve was modified to roll off below 20 Hz to reduce the rumble. What playback gear are you using? You can use a hi-pass filter to improve the the low end noise and the run the 'click/pop eliminator' to get most of the ticks. For hi-pass use FFT, log scale and click a point at 100% 30 Hz. Click another at 29 Hz 0% and drag the left most point down to 0%. You might want to save your filter for the next disc. G²

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