Re:Apple Music Announces Spatial Audio and Lossless Audio
by dsr_ on Monday May 17, 2021 @10:47AM
(#27184050)
That's not a definition of lossless that anyone else uses.
The definition of lossless is that either no compression algorithm was used or the compression algorithm is capable of precisely recreating the original bits in as bits out. If you feed a lossless mechanism an 8 bit 3.5KHz mono bitstream, it must reproduce the same 8 bit 3.5Khz mono bitstream at the other end. Quality out equals quality in.
In your definition, no sound is ever lossless because no microphones can ever capture the complete audio experience available from a live performance - if you move your head a quarter of a wavelength, the sound will change.
The definition of lossless is that either no compression algorithm was used or the compression algorithm is capable of precisely recreating the original bits in as bits out. If you feed a lossless mechanism an 8 bit 3.5KHz mono bitstream, it must reproduce the same 8 bit 3.5Khz mono bitstream at the other end. Quality out equals quality in.
In your definition, no sound is ever lossless because no microphones can ever capture the complete audio experience available from a live performance - if you move your head a quarter of a wavelength, the sound will change.
That's why we don't use that definition.