HDCD v. 'normal' CD - there is no case! Normal CD without HDCD filter reads only 8 bit information chunk. CD player with HDCD filter reads all 11 bits giving better sound quality. Thats all. If somebody hears something special on HDCD if it listens on normal CD player it means only, that it is 'normal' sound of this CD. It can't be more sharp or whatever performance because of HDCD coding.
Otherwords, HDCD contains both information: standard CD for standard CD players and extended HDCD what is visible only if CD player has HDCD filter. Please, no ignorance!
Otherwords, HDCD contains both information: standard CD for standard CD players and extended HDCD what is visible only if CD player has HDCD filter. Please, no ignorance!