Digital eXtreme Definition

Digital eXtreme Definition (DXD) is an audio encoding scheme for professional use that was developed for editing high-resolution recordings because DSD, the audio standard used on Super Audio CD is not ideally suited for editing. DXD is a PCM signal with 24-bit resolution (8 bits more than the 16 bits used for Red Book CD) sampled at 352.8 kHz – eight times 44.1 kHz, the sampling frequency of Red Book CD. The data rate is 8.4672 Mbit/s per channel – three times that of DSD64.

DXD was initially developed for Merging’s Pyramix DSD workstation.

External links

• White paper: The advantages of DXD for SACD

• DIY: Digital eXtreme Definition 24-bit/ 352.8 kHz audio work - station

• DSD, DXD & SACD - high resolution audio

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