If I ever wrote/said "certainly audible", sorry. Don't remember doing that and too lazy to re-check. AFAIR, I only argued that you can't say "not audible" for sure.Well, I call that progress. We went from: it’s certainly audible, to: we’ll need to check. I can live with that
But I do think it’s far better than anecdotes. Logic can help you understand a problem, filter out evidence, help you understand and interpret it
And btw, this missing fundamental "debate" is just a tangent. The original Q was about the audibility of -75dB THD at 15kHz. The two questions are somewhat close/related but still, the missingF is a matter of pitch-perception and the other one is timbre-perception.
And before someone jumps, I also haven't said that -75dB THD is surely audible. Just that I do not consider it ok .. or 'safe' .. or acceptable.
Nobody can say "-75db is audible", at least not in a generic way. But same as sure, nobody can say "not audible" or "no concern".
And that's not only true about -75dB, but pretty much any SINAD number between ~50 and 1xx.
Personally, I prefer 106+dB as a sort of 'safe' number. As in: 10 dB below the 96dB range of a CD. IIRC, that 'logic' comes from an old post by amir. Or I might just have 'invented' it
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