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In Reply to: RE: 28KHz anomaly, different album downloads. No 28KHz blip digitizing my own L.P. posted by Ugly on July 13, 2014 at 10:24:29:
It's not uncommon to find PC power supplies switching in the 25KHz range but there's no set rule and it depends on the design. Switching power supplies can have a switching frequency upwards of 1-MHz.
I doubt that the old tape machines used switching power supplies. I was thinking it could be the tape bias frequency but I believe those were up around 400KHz.
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Follow Ups
- RE: 28KHz anomaly, different album downloads. No 28KHz blip digitizing my own L.P. - AbeCollins 11:14:02 07/13/14 (1)
- RE: 28KHz anomaly, different album downloads. No 28KHz blip digitizing my own L.P. - Ugly 11:26:46 07/13/14 (0)
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