On 21-01-17 23:03, Woody wrote:

mp3 works OK provided the data rate is high enough. For most people
192K - or preferably 256K or 320K - is difficult to tell from an
original (classical or jazz) CD

Indeed. I would like to challenge anyone dismissing mp3 to a
blind listening test of well-processed mp3 at 256K. You would
have to be very well trained to spot the difference with typical
music material.

I once did a blind listening test on an audiophile forum to
see if people could hear a difference between "hi-res" and CD.
As an outlier test, I threw in a 256K mp3 file (decoded to
FLAC, so people couldn't tell from the file format what it
was). The mp3 file came out as the second most preferred of
all 9 alternatives - the "winner" was the 16/44.1 file that
I had increased the volume by 1 dB on...

Julf