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RE: Rip from a physical CD.

Posted by PAR (A) on April 23, 2021 at 15:16:41

In Reply to: RE: Rip from a physical CD. posted by tketcham on April 23, 2021 at 05:14:00:

" I can see why Qobuz would want some way of marking their streamed files so that they have some control over use. "

It isn't Qobuz that would add watermarking ( if indeed there is watermarking) but the record company. To understand why you need to appreciate the paranoia that exists in regard to piracy and ( from my now dated experience) the often limited technical knowledge that is typically possessed by the executives that make the decisions on such matters.

I was very involved in watermarking systems for audio when I was working in the UK record industry in the late 1990s to early 2000s. At the time none of the competing systems I was looking at provided watermarks continuously as seems to be the impression commonly held in the audiophile world. The incoming signal to the watermark processor was analysed to find appropriate points to insert the watermark.These would be those points where audible detection was anticipated to be the least likely so that points like the decay of notes would be the least likely place to contain any watermark. Of course things may well have changed since then but the potential for audibility would IMO still be a major criterion.

I still have a blind test CD from one of the proponents of the watermarking systems ( each musical excerpt repeated three times where each of them may or may not have been watermark encoded). I have never been able to confidently judge which was which. At least I am not guessing as to whether or not any have been encoded.

I wonder how much that is attributed by audiophiles to watermarking without objective evidence to support it is caused by other factors?

"We need less, but better" - Dieter Rams

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