GAD LP 073 - Poznańska Orkiestra Rozrywakowa PRiTV - Butik

[AfricPepperbird]

I'm fairly certain .opus are lossy files, so converting to .wav just upsamples them. (But I may be wrong! I know not much about opus, either)

[nidostar]

That's what I would have thought. But the spectral analysis of each track suggests there are frequencies present beyond 20kHz and no sudden cut-off as one would expect from a lossy file. I'd post some visual examples but after all these years on LMT I still haven't mastered how to add images!

[gitman1]

how to download the link does not work.Thanks

[nidostar]

how to download the link does not work.Thanks

No the link does work. Just copy from "pixeldrain" onwards ie don't include "opus //"

[oliverino]

lossless from web source
https://buzzheavier.com/f/GRE_WafyoAA=

[Nobody]

Many Thanks Oliverino! 

[sj_beat]

Thanks oliverino for lossless

[bardwell64]

It's worth remembering that Poland didn't always have the best recording equipment during Soviet days, and unfortunately some Polish recordings show quite a noticeable loss of definition. Czech recordings on the other hand have crystal clear quality in recordings going back to the 1960s. Perhaps some countries were more favoured under communism than others.