What is DSD?
Spectrum DSD vs. PCM
DSD as Encoding Format
DSD As Encoding Format
Output of 1FS PCM Encoder
Output of 2FS PCM Encoder
Output of DSD Encoder
- Many recordings exist that were converted from original PCM recordings.
- Audiophile labels have large libraries of DSD recordings as used for SACD.
- DSD recordings increasingly available via download.
The Download Bottleneck
- File sizes for a 3 minute song and download times (assuming 5Mb/sec internet connection):
|Redbook (16/44.1kHz)||32MB||1 min.|
|DXD (24/352.8kHz)||380MB||10 min.|
DSD Playback Equipment
•Many DACs exist that use standard off the shelf chips that either do not accept DSD or convert DSD inputs to PCM before converting to analog.
•Playback Designs and few other manufacturers offer DACs that truly convert DSD to analog without any detours.
•Variety of playback software exists for Mac and PC that support DSD and PCM file formats.
DSD-over-PCM (DoP) open Standard
•Allows sending of DSD data over standard PCM interfaces (i.e. AES/EBU, SPDIF, USB etc.)
•No conversion to PCM!
•Supported by most DAC and playback software manufacturers
Link to external DAC