Super Bit Mapping is Sony's patented noise shaping process, which can be used w/wo redithering. It reshapes the noise spectrum,including the roundoff noise spectrum associated with bit length reduction, so that instead of having a flat amplitude spectrum at all frequencies, the noise amplitude is lowered across most of the audio band and correspondingly raised at high frequencies, where it is supposedly less audible.
What is Super Bit Mapping
I just bought a cd on Sony, Tchaikovsky and Sibelius Violin concertos, Isaac Stern and the Philadelphia Orchestra under Eugene Ormandy. The playing is superb and the sound quality very high, at least on first hearing. A sticker was added on the front of the jewel case proclaiming SBM. What is it? What are the advantages or disadvantages of this process.