Hi.
Can someone please advise if the following WAV has been upscaled please?
TIA
I bought a CD, which was supposed to be tracks from the original DAT Tapes. I ripped it to WAV, to see if the tracks on the CD’s were from DAT Tapes, or they were bootleg copies.
You can’t always be sure and it’s not hard to “fake” if you try but Lossless Audio Checker says it’s upsampled
…It looks like Lossless Audio Checker has disappeared from the Internet. 
The spectrum cuts-off at 16kHz (maybe what Lossless Audio Checker is finding) and that’s typical of MP3. But it doesn’t prove anything except that there’s no audio over 16kHz.
Wikipedia says:
The audio is limited to half the sample rate so the original could have been 32kHz DAT.
And I assume you don’t have much choice or you would have bought an “original” CD.
FYI - Even if you can hear “loud” 20kHz test tones in a hearing test, in the context of music the highest frequencies are usually weak harmonics (the only instrument that can play 16kHz “notes” is a synthesizer). And these weak harmonics are usually masked (drowned-out) by not-as-high frequencies. That’s one of “tricks” used by MP3.
So typically you can low-pass filter at 16kHz and you won’t hear a difference in a proper blind listening test. Of course you’d like to have “full audible range” but it’s not as important as it’s made-out to be. 
P.S.
There is a plug-in called Harmonic Enhancer that can generate “missing harmonics”.
The album was never commercially released on CD. The artist released this CD in 2007, from the original DAT Tapes. The tracks were recorded between 1989 and 1992.
I paid a lot of money for this CD, so if it’s fake I’ll ask for a refund.
There’s no way to know for sure. My GUESS that it’s from a legitimate 32kHz DAT.
Some people are still using analog tape in the studio… A lot of music is “destroyed” by “loudness war” mastering… We have no control over the production process.
And if you like the music and there is no other choice, why complain and why return it? Keep it and enjoy it!
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