It's a CD-spec so most old CD Players do it, Pat says some new ones don't. The basic answer is if that flag is present on the CD's track then it will change the sound, and a change that can be easily heard when compared to a WAV file without the emphasis applied.....the technical one.....
"Wikipedia" Wrote: > > In processing electronic audio signals preemphasis refers to a system > process designed to increase, within a band of frequencies, the > magnitude of some (usually higher) frequencies with respect to the > magnitude of other (usually lower) frequencies in order to improve the > overall signal-to-noise ratio by minimizing the adverse effects of such > phenomena as attenuation differences or saturation of recording media in > subsequent parts of the system. That is the mirror of the Deemphasis. > The whole system is called Emphasis. The frequency curve is decided by > special time constants. The Cutoff frequency can be calculated from > that value. > > Preemphasis is commonly used in telecommunications, digital audio > recording, record cutting, in FM broadcasting transmissions, and in > displaying the spectrograms of speech signals. > > An example of this is the RIAA equalization curve on 33rpm and 45rpm > vinyl records. > > See also Federal Standard 1037C and MIL-STD-188. > http://en.wikipedia.org/wiki/Preemphasis -- Jim ------------------------------------------------------------------------ Jim's Profile: http://forums.slimdevices.com/member.php?userid=213 View this thread: http://forums.slimdevices.com/showthread.php?t=18738 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
