Yet the first round of reviewing of the new formats have revealed nary a complaint about this. The second benefit is the improved phase performance indirectly due to the extended frequency response. C.D. This is also the problem the Digital Antidote Two fixes by another means. Theoretically it has been shown that 108 dB at approximately 3-kilohertz frequency is the limit of human hearing. A sixteen bit CD with noise shaping at the recording can achieve this.
Noise shaping at the recording level can add real information.
The information added is real, not synthesized. You have to answer that one for yourself. HDCD can get a legitimate 20-bit resolution. The Digital Antidote Two is completely compatible with HDCD as well as interpolating DAC's. The current noise floor limit of the best electronics is about 20 bits.