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Old 10-17-2019, 10:06 AM   #13
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Join Date: Apr 2015
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I digitized a cassette for a family member a year or so ago. I used ReaFIR to build a noise profile of the tape hiss and then applied it to the music. While it did reduce the noise, I found the result had some weird "beating" effect where the noise would seem to flutter in and out at about 5hz or thereabouts. I also got unanimous, if unscientific, feedback from 3 or 4 listeners that the non-edited version sounded superior.

This tape had been recorded relatively well - semi-pro to 4 track in the 90s, and then "mastered" from that. So my experience may not translate to a more poorly recorded cassette.
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