DXD is Digital eXtreme Definition and was created for editing DSD music.
Since the 1bit operation of DSD is not suitable for music editing, most of them have to use PCM (Pulse-code modulation), so DXD is a PCM format for music recording and editing DSD.
The specification is 24bit/352.8kHz PCM signal, in which 24bit has 8bit more data than the 16bit sampled by CD, and the sampling rate of 352.8kHz is 8 times that of CD 44.1kHz, and the data transfer rate is 8.4672 Mb/s, which is 3 times that of DSD64 commonly used in SACD, and can provide better analysis than CD and SACD.
This provides better analysis and dynamics than CD and SACD, representing one of the highest standards of sound quality for studio production.
DXD was originally designed for Merging Pyramix’s music production workstation and was introduced in 2004 along with the Sphynx 2 AD/DA converter used in the workstation.
By using DXD to edit music, only one final conversion to DSD is required before producing SACD, which greatly reduces the high frequency noise above 20kHz generated during DSD conversion and preserves better sound quality.
The DSD format itself is prone to noise in the high frequencies, and each DSD conversion introduces more noise.
DXD can limit the conversion to one edit, which helps reduce the sound quality loss of DSD/SACD.
