Appendix Iii Optional Features; Pyramix Dsd / Sacd - Merging Pyramix 4.3 User Manual

Appendix III Optional Features

Pyramix DSD / SACD

Hardware and Settings
Interfacing
DSD transmission works well with either AES-EBU or SDIF interfaces. Most converter manufacturers
use SDIF. Only dCS does SDIF and AES-EBU.
A further issue is the existence of two different AES-EBU supported DSD formats. The so called "Sony"
and one named "P3D." Merging Technologies support both of these. If you need to interface to both
AES/EBU and SDIF two cards will be required.
Wordclock settings.
In DSD mode it is imperative Pyramix wordclock settings correspond with the requirements of the con-
verters employed. To date all the DSD compatible converters we have tested generate and expect
wordclock at the standard nominal rate. I.e. 44.1kHz.
Failure to set Pyramix to expect only 44.1kHz in DSD operation will prevent proper locking to the exter-
nal source and therefore prevent correct decoding of the DSD bitstreams, resulting in very loud noise on
its outputs. Check the setting via:
View > Mixer Settings : I/O & Sync Tab
make sure that the "Wordclock is Input at 44.1k x 2" checkbox is NOT checked when operating in DSD
mode.
To verify Pyramix is correctly locked to incoming Word clock:
Left-click on the red 'LED' in the Sync: WordClock box (bottom right of Pyramix screen in the status
bar). This will open the I/O status window The green LEDs indicate active inputs and there will be a red
LED in front of the chosen sync source if this is locked.
Right-click on the same (Sync: WordClock) red 'LED'. Select, Debug > Input Check. This window will
enable you to check that Pyramix is effectively locked at the correct frequency.
Project Types
DXD Mixing Project
The DXD Mixing Project can be used use for recording, editing, mixing, processing and mastering DSD/
SACD in DXD format (352.8 kHz - 32 bits)
Opening a DXD Mixing Project
User Manual : Appendix III Optional Features
Convert DXD Mixing Project to DSD Project mode? Dialog
341
User Manual