Petrushka
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All you have to do is record a silent groove and look at the waveform with the vertical scale enhanced. Compare the noise level with a section of peak loudness. I’ve never done this with a recent pressing, but I’ve done it withe hundreds of older ones, say from the 70s.
I found the typical unweighted s/n to be 30-40 dB. That is after vacuum cleaning, and looking only at clean sections with no clicks or crackle. A good noise reduction algorithm can improve this by 5-10 dB without being noticeable.
I found the typical unweighted s/n to be 30-40 dB. That is after vacuum cleaning, and looking only at clean sections with no clicks or crackle. A good noise reduction algorithm can improve this by 5-10 dB without being noticeable.