zondag 17 juni 2012
Temporary stop blog 33 toeren klassiek
Gisteren kreeg ik deze reactie:
I do appreciate your uploads; but one thing MUST be acknowledged. Many, if not most, have a background buzz signature that consists of a series of discrete peaks at harmonically related frequencies, running from the lower midrange all the way to the cutoff of your digitizer lowpass filter. The buzz will register at a varying amplitude, sometimes as high as, cumulatively, about -35 dB on my digital meter. I have devised a very complex filter to remove it, but of course this cuts little narrow "holes" into the spectrum. It seems to me that possibly something in your computer is leaking RF interference into your audio system (do you use a tube preamp?) and that you are not monitoring carefully on an extremely wideband system or perhaps have a personal slight hearing loss at the high end. I find that it takes me about an hour to two hours to clean up a typical LP for saving, quite a burden but helpful if, in many instances, the item is completely out of print and has never been issued on CD. So I hate to "look a gift horse in the mouth" but would respectfully suggest that you experiment and see if wiring routing, equipment placement, common power socket connections, superfluous grounds, or other issues can be checked to see if this can be MINIMALISED in future. For example: if you run a digitizing program, leave the stylus OFF the record but examine its meter WHILE 'recording' a blank file. Play it back and greatly increase the gain: you can immediately see the buzz, which is louder than turntable rumble and typical record surface noise and intrinsic tape hiss. Yours respectfully, a retired recording engineer
Ik dank de anonieme geluidstechnicus voor zijn reactie.
Kennelijk is er dus een serieus probleem dat ik niet zo gemakkelijk kan oplossen. Dus dat betekent dat ik de blog stop tot het probleem van de buzz opgelost is. Aangezien ik bepaald geen geluidstechnicus ben neem ik aan dat het wel enige tijd kan duren voordat ik de buzz eruit heb.
Dus graag geduld, en tot later.