this post was submitted on 23 Oct 2023
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Yeah, this isn’t how that works.
“Lossless” refers to a mathematical property of the type of compression. If the data can be decompressed to exactly the same bits that went into the compressor then it’s lossless.
You can’t “synthetically upscale” to lossless. You can make a fake lossless file (lossy data converted into a lossless file format) but that serves zero purpose and is more of an issue with shady pirate uploaders.
Lossless means it sounds exactly like the CD copy, should it exist. That’s really all. And you want lossless for any situation where you’ll be converting again before playback. Like, for example, Bluetooth transmission.
You're bang on with everything but this, if you're getting FLACs from the source, you may be getting higher quality than CD which is 16-bit 44.1khz. I've got many 24-bit 96khz FLACs in my collection
Your last point about Bluetooth is such a great one though. Recompression of already compressed audio is a much worse end result than compressing uncompressed audio one time (and before anyone says it, basically no one is listening to lossless Bluetooth audio)
Fair point with the higher bit depths and sampling rates, I just figured there was no point in overcomplicating it when it seemed there was already some form of misunderstanding.